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LWN1140-6EM1G
BATTERY ACCESSORIES
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: BEL / PARTNER STOCK
- Product type:
- SVHC: To Be Advised
- Charge Current: 14A
- Output Voltage: 12VDC
- No. of Cells Charged: -
| Delivery and price | |
|---|---|
| Units per pack | 3 |
| Price | 553.74 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
## W Series
125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Convert Select
## **Features**
- RoHS lead-free-solder and lead-solder-exempted products are available
- Rugged 35 mm DIN-rail snap-fit design
- Class I equipment
- Universal AC-input or DC-input (66 – 150 or 90 – 350 VDC) with single stage conversion
- Power factor correction, harmonics IEC/EN 61000-3-2
- Virtually no inrush current
- Compliant with EMC standards EN IEC 61204-3, EN 50121-3-2
- Emissions according to EN 55011 / 55032
- Very high efficiency; up to 89%
- Short-term output peak power capability, rectangular current limiting characteristic
- Single or two independently regulated outputs with 12, 24, 36, or 48 V
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138<br>5.43"<br>ig 103 114<br>4.05" 4.49"<br>**----- End of picture text -----**<br>
- Outputs no-load, overload, and short-circuit proof
- PCBs coated by protective lacquer
- Very high reliability
Safety-approved to IEC/EN 62368-1 3rd edition and UL/CSA 60950-1 2nd edition, UL 508 listed components
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1<br>@. eUt)ususre 1 not EW ®)<br>**----- End of picture text -----**<br>
## **Table of Contents**
Description............................................................................2 Model Selection ....................................................................2 Functional Description ..........................................................4 Electrical Input Data .............................................................6 Electrical Output Data...........................................................9 Electromagnetic Compatibility (EMC) .................................14
Immunity to Environmental Conditions ...............................17 Mechanical Data .................................................................19 Safety and Installation Instructions .....................................20 Description of Options ........................................................23 Accessories ........................................................................28 Battery Charging /Temperature Sensor ..............................29
## **belfuse.com/power-solutions**
BCD20020-G_AH 9 January 2023
W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Description**
The MELCHER Convert Select series represents a family of DIN-rail mountable DC-DC and AC-DC converters with power factor correction. The converters have been designed according to the latest industry requirements and standards.
The converters are ideal for use in outdoor and other demanding applications to power building control systems, factory automation, industrial controls, instrumentation, electromagnetic drives, fans, and other DC loads.
Different models are available with a single output or two independently regulated, electrically isolated outputs with 12, 24, 36, or 48 V. Special models for battery charging are available. The EW models are particularly suitable for 110 V railway applications; they have been designed in accordance with the railway standards EN 50155 and EN 50121.
Key features of the Convert Select line include power factor correction with low harmonic distortion, negligibly low inrush current, high immunity to transients and surges, and low electromagnetic emissions. Internal protection circuits such as input over- and undervoltage lockout, thermal protection, as well as output overvoltage protection by a second control loop ensure safe operation of the final system. The outputs deliver an electrically-isolated Safety Extra Low Voltage (ES1) and low output noise. They are no-load, overload, and shortcircuit proof. The electronically controlled short-term peak power capability of up to 150% of the rated output power enables the front end converters to deliver additional power to start-up motors or to safely operate subsequent circuit breakers. Built-in large sized output capacitors absorb possible reverse energy, which may be caused by quick deceleration of electromagnetic drives connected directly to the output. A green LED at the front cover displays the status of the output(s).
The Convert Select Series was designed according to all relevant international safety standards. The converters are approved by Nemko and CSA and are UL 508 listed. Adequate clearances and creepage distances allow operation in pollution degree 3 environment (with AC input). All board assemblies are coated with a protective lacquer.
The thermal concept allows operation at full load up to an ambient temperature of 60 °C (LW models) or 70 °C (EW models) in free air without forced cooling. A rugged DIN snap-fit device allows easy and reliable fixing onto the various 35 mm DIN rail models. The converters are fitted with cage clamp terminals which are easily accessible from the front. System connectors with screw terminals for use with preassembled harnesses, external adjustment of the output voltage as well as various auxiliary functions are available as options. The letter E stands for improved EMC performance of LW models. Models without E are obsolete.
## **Model Selection**
_Table 1: Standard models_
|**Output 1**<br>**_V_o1 nom**<br>**[VDC]**<br>**_I_o1 nom**<br>**[A]**|**Output 1**<br>**_V_o1 nom**<br>**[VDC]**<br>**_I_o1 nom**<br>**[A]**|**Output 2**<br>**_V_o2 nom**<br>**1**<br>**[VDC]**<br>**_I_o2 nom**<br>**[A]**|**Output 2**<br>**_V_o2 nom**<br>**1**<br>**[VDC]**<br>**_I_o2 nom**<br>**[A]**|**Output**<br>**Power**<br>**_P_o nom**<br>**[W]**|**Operating Input**<br>**Voltage**<br>**_V_i min– ****_V_i max**|**Type**<br>**Designation6**|**Efciency**<br>**η min**<br>**8**<br>**[%]**|**Options3, 5**|
|---|---|---|---|---|---|---|---|---|
|12.35|7.5*|-|-|93*|852– 264 VAC,<br>47 – 63 Hz4,<br>902– 350 VDC7|LWR1301-6EG3|83*|R<br>D1,~~D2, D5~~<br>M1, M2<br>F<br>~~K2~~<br>~~non-G~~|
|12.35|14*|-|-|173*||LWN1301-6EG3|83*||
|24.7|5|-|-|124||LWR1601-6EG|87||
|24.7|10|-|-|247||LWN1601-6EG|87||
|37.05|3.3|-|-|123||LWR1701-6EG3|88||
|37.05|6.6|-|-|245||LWN1701-6EG3|88||
|49.4|2.5|-|-|124||LWR1801-6EG|88||
|49.4|5|-|-|247||LWN1801-6EG|88||
|12.35|7*|12.35|7*|173*||LWN2320-6EG3|83*||
|24.7|5|24.7|5|247||LWN2660-6EG|87||
|37.05|3.3|37.05|3.3|245||LWN2770-6EG3|89||
|49.4|2.5|49.4|2.5|247||LWN2880-6EG|89||
|24.7|5|-|-|120|66 – 150 VDC|EWR1601-0G9|87|R, M1, M2, Q,<br>~~K2 , non-G~~|
|24.7|5|24.7|5|240||EWN2660-0G9|87||
* Version 106 or higher 1 R-input not connected.
> 2 For derating at low input voltage see section _Output Power Derating._
3 For minimum quantity and lead times contact the Company.
4 The converters have been tested up to 440 Hz; operation at 16 2/3 Hz is also possible, but the output ripple is slightly higher. For questions when operating at frequencies <47 Hz or >63 Hz, consult the Company.
5 On double-output models the options R, M2, D1, D2, D5 are related to the second output only.
6 Improved EMC performance for LWN/LWR models.
> 7 _V_ i ≤ 250 VDC for models with option F
> 8 Min. efficiency at _V_ i nom, _I_ o nom, and _T_ A = 25 °C. Typical values are approx. 2% better.
9 EWN and EWR models are designed for railway applications according to EN 50155 and EN 50121.
> [Not for new designs (NFND) or End of Life (EOL).]
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125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## W Series
_Table 2: Battery charger models (M1 included)_
|**Output Voltage**<br>**_V_Bat**<br>**[VDC]**<br>**_V_o safe**<br>**1**<br>**[VDC]**<br>**_V_o max**<br>**[VDC]**|**Output Voltage**<br>**_V_Bat**<br>**[VDC]**<br>**_V_o safe**<br>**1**<br>**[VDC]**<br>**_V_o max**<br>**[VDC]**|**Output Voltage**<br>**_V_Bat**<br>**[VDC]**<br>**_V_o safe**<br>**1**<br>**[VDC]**<br>**_V_o max**<br>**[VDC]**|**Nominal Output Values**<br>**_V_o nom**<br>**5**<br>**[VDC]**<br>**_I_o nom**<br>5<br>**[A]**<br>**_P_o nom**<br>5<br>**[W]**|**Nominal Output Values**<br>**_V_o nom**<br>**5**<br>**[VDC]**<br>**_I_o nom**<br>5<br>**[A]**<br>**_P_o nom**<br>5<br>**[W]**|**Nominal Output Values**<br>**_V_o nom**<br>**5**<br>**[VDC]**<br>**_I_o nom**<br>5<br>**[A]**<br>**_P_o nom**<br>5<br>**[W]**|**Operating Input**<br>**Voltage**<br>**_V_i min– ****_V_i max**|**Type**<br>**Designation 6**|**Efciency**<br>**η min**<br>**8**<br>**[%]**|**Options 3**|
|---|---|---|---|---|---|---|---|---|---|
|12|12.841|14.65|13.8|7.5*|104*|852– 264 VAC,<br>47 – 63 Hz4,<br>902– 350 VDC7|LWR1140-6EM1G3|83*|F<br>~~K2~~<br>~~non-G~~|
|||||14*|194*||LWN1140-6EM1G3|85*||
|24|25.681|29.3|27.3|4.2|115||LWR1240-6EM1G|86||
|||||8.4|230||LWN1240-6EM1G|85||
|36|38.521|43.95|40.88|2.8|115||LWR1840-6EM1G3|86||
|||||5.6|230||LWN1840-6EM1G3|86||
|48|51.361|58.6|54.5|2.1|115||LWR1740-6EM1G|86||
|||||4.2|230||LWN1740-6EM1G|87||
1 Setting voltage (typ.) with open R-input
> 2 For derating at low input voltage, see section _Output Power Derating_ .
3 For minimum quantity and lead times, contact the Company.
4 The converters have been tested up to 440 Hz; for operating frequency <47 Hz or >63 Hz consult the Company.
5 Nominal output figures, calculated with a cell voltage of 2.27 V at 20 °C.
6 Improved EMC performance.
> 7 _V_ i ≤ 250 VDC for models with option F.
> 8 Min. efficiency at _V_ i nom, _V_ o nom, _I_ o nom, and _T_ A = 25 °C. Typical values are approx. 2% better.
> [Not for new designs (NFND) or End of Life (EOL).]
## **Part Number Description**
|Input voltage range ............................................................E, L<br>Series ...................................................................................W<br>Nominal output power<br>125 W ............................................................... R<br>250 W ............................................................... N<br>Number of outputs .............................................................1, 2<br>Type specifcation ....................................................000 – 999<br>Operational ambient temperature range_T_A<br>–40 to 60 °C .....................................................-6<br>EW or customer-specifc .............................-0, -5<br>Improved EMC performance .................................................E<br>Options<br>Output voltage control input1........................... R<br>Save data signal1............................. D1,~~D2, D5~~<br>Multiple functions viaD-SUBconnector1.M1, M2<br>Built-in second fuse, input diode .................. F, Q<br>System connector ...........................................~~K2~~<br>RoHS compliant for all six substances2.......... G|L W N 2 6 60 -6 E D1 F K2 G|
|---|---|
- 1 Only one of these options is possible.
- 2 Models without the suffix G (non-G option) do not use lead-free solder.
**Note:** The sequence of options must follow the order above.
> [Not for new designs (NFND) or End of Life (EOL).]
Example: LWN2660-6ED1FG: Power factor corrected AC-DC converter, operating input voltage range 85 – 264 VAC, 2 electrically isolated and individually regulated outputs, each providing 24.7 V, 5 A, improved EMC performance, options D1, F and RoHS compatible for all 6 substances.
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W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Product Marking**
Basic type designation, applicable safety approval and recognition marks, CE mark, warnings, pin designation, company logo. Specific type designation, input voltage range, nominal output voltages and currents, degree of protection, batch number, serial number and data code including production site, version, and date of production.
## **Functional Description**
The W Series converters are primary controlled AC-DC or DC-DC flyback converters with a constant switching frequency of 130 kHz. The power-factor-corrected single-step con version of the input voltage to a low output voltage results in extremely high efficiency. Depending upon the output power, the converters are fitted with one (125 W) or two (250 W) powertrains. Models with two powertrains have one or two outputs. Double-output models exhibit individually regulated power trains.
The input voltage is fed via fuse, filter, and rectifier to the main transformer, designed in planar technique. The input filter with very small input capacitance generates virtually no inrush current. An input transient suppressor protects the converter against high voltage peaks and surges. Input over- and undervoltage lockout as well as input current limitation protect the converter from operation outside of its specification. The input voltage waveform is sensed by the primary control logic to allow active power factor correction, forcing the input current to follow the input voltage waveform.
The secondary side of the main transformer supplies via the rectifier diode a large electrolytic output storage capacitor providing for the hold-up time. Double-output models exhibit an individual control logic each. The output voltage and the output current are measured and fed back to the primary control logic via an optocoupler. A second control loop monitors the output voltage. It disables the output in the case of a failure in the control logic and limits the output voltage.
Built-in temperature sensors monitor the internal temperature of each powertrain. If the temperature exceeds the limit, the converter reduces the output power continuously to keep the temperature below its limit. A green LED on the front cover confirms the presence of the output voltage(s).
The R input (option R, M1, or M2) allows for external adjustment of the output voltage by means of a resistor or an external voltage source. An external sensor can be connected to the R input and allows for temperature-controlled battery charging (see _Accessories_ ).
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03103b<br>Fuse<br>L<br>3 2 Vo+<br>Vi+ C<br>y 3<br>+ 6<br>CY 7<br>N Shunt Shunt<br>2 4 Vo–<br>Vi– 2 [nd] fuse Cy Cy 5<br>(option F)<br>8<br>1 EW models CY 9<br>1 have a link or a Control circuit Vo/Io control<br>decoupling diode including 1<br>(opt. Q) in the PFC and 11<br>Vi+ line. input OVP/UVP 2 [nd ] control loop (ES1)<br>10 AUX<br>1<br>Input filter Input filter Output filter<br>Rectifier<br>**----- End of picture text -----**<br>
_Fig. 1 Single-output converters (125 W)._
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125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## W Series
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03104b<br>Fuse<br>L<br>3 2<br>Vi+ C Cy Vo1+<br>y 3<br>+<br>N Shunt Shunt<br>2 4 Vo1–<br>Vi– 2 [nd] fuse Cy Cy Cy 5<br>(option F)<br>1<br>Control circuitincluding Vo/Io control<br>PFC and<br>input OVP/UVP 2 [nd ] control loop<br>6<br>Cy Vo2+<br>7<br>1 EW models +<br>have a link or a<br>Shunt Shunt<br>decoupling diode 8<br>(opt. Q) in the C Cy Vo2–<br>Vi+ line. y 9<br>Control circuitincluding Vo/Io control 1<br>PFC and 11<br>input OVP/UVP 2 [nd] control loop<br>10 AUX<br>1<br>Input filter Input filter<br>Output filter<br>Rectifier<br>Input filter Output filter<br>**----- End of picture text -----**<br>
_Fig. 2 250 W converters. The figure shows a double-output model. For the pinout of 250 W single-output models, see fig. 1 or table 13._
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W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Electrical Input Data**
General conditions: _T_ A = 25 °C, unless _T_ C is specified.
## _Table 4a: Input data of LW models_
|**Input**|**Input**||**LWR**|**LWR**|**LWN**|**LWN**|**Unit**|
|---|---|---|---|---|---|---|---|
||||**AC Input**|**DC Input**|**AC Input**|**DC Input**||
|**Characteristics**||**Conditions**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**||
|_V_i|Operating input voltage<br>range|_I_o= 0 –_I_o nom<br>_T_c–_T_c max|85 2<br>264|902<br>3504|85 2<br>264|902<br>3504|V|
|_V_i nom|Rated input voltage<br>range||100<br>(230)<br>240|220|100<br>(230)<br>240|220||
|_f_i|Rated input frequency1||50 – 60|-|50 – 60|-|Hz|
|_I_i|Input current|_I_o nom, _V_i=_V_i nom|0.63|0.65|1.25|1.3|A|
|||_I_o nom, _V_i=_V_i min|1.75|1.67|3.5|3.3||
|_P_i0|No-load input power|_V_i min –_V_i max|1.2|0.9|1.3|1|W|
|_I_inrush|Inrush current|_V_i max_, t_> 0.1 ms|3|3|5|5|A|
|_C_i|Input capacitance||5|5|6|6|µF|
|_PF_|Power factor|_V_i nom= 230 V,_I_o nom|0.86 5|-|0.86 5|-||
|_V_i RFI|Conducted input RFI|EN 55011 / 55032<br>_V_i nom,_I_o nom|A, B3|A, B3|A, B3|A, B3||
||Radiated input RFI||A|A|A|A||
|_f_switch|Switching frequency||130|130|130|130|kHz|
> 1 For operating frequencies <47 Hz and >63 Hz consult the Company. The converters have been tested up to 440 Hz.
> 2 Output power derating at low input voltage and/or high case temperature _T_ C (see _Output power derating_ ).
- 3 Models with feature E (type test with LWN1701-6EG) - peak only.
> 4 _V_ i ≤ 250 VDC for models with option F.
5 Models with 12 V output: ≥0.70 for LWR, ≥0.75 for LWN
_Table 4b: Input data of EW models_
|**Input**|**Input**||**EWR**|**EWN**|**Unit**|
|---|---|---|---|---|---|
||||**DC Input**|**DC Input**||
|**Characteristics**||**Conditions**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**||
|_V_i|Operating input voltage<br>range|_I_o= 0 –_I_o nom<br>_T_c–_T_c max|66<br>1501|66<br>1501|V|
|_V_i nom|Rated input voltage<br>range||110|110||
|_V_UVT|Undervoltage trigger||54<br>60|54<br>60||
|_I_i|Input current|_I_o nom, _V_i=_V_i nom|1.25|2.5|A|
|||_I_o nom, _V_i= 66 V|2.2|4.4||
|_P_i0|No-load input power|_V_i min –_V_i max|0.8|1.3|W|
|_I_inrush|Inrush current|_V_i max_, t_> 0.1 ms|6|12|A|
|_C_i|Input capacitance||2.5|4.5|µF|
|_V_i RFI|Conducted input RFI|EN 55011 / 55032<br>_V_i nom,_I_o nom|A|A||
||Radiated input RFI||A|A||
|_f_switch|Switching frequency||130|130|kHz|
> 1 _V_ i ≤ 168 VDC for 3 s. Overvoltage trigger adjusted to 170 – 182 V.
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W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Output Power Derating**
The output power of LW models must be decreased at low input voltage and/or powertrain temperature above 125 °C.
The powertrain temperature depends on the output power, the input voltage, and the cooling method. At low input voltage the losses increase. At the maximum specified environment temperature _T_ A free air convection cooling might be insufficient approaching maximum ambient conditions. As a result, the output power has to be reduced according to the tables below.
**Note:** The measurements have been made by the approval boards with free air convection cooling according to 62368-1 3rd edition specified ambient temperature _T_ A and with the converter built in a cardboard box according to UL 508 and a specified temperature outside the box _T_ out. The tables give a correlation between specified, please contact the Company. _T_ A or _T_ out and the case temperature _T_ C (measuring point _T_ C see _Mechanical Data_ ). For models not
EW models need no derating.
_Table 5a: P_ o _derating according to UL 60950-1 2nd edition at T_ A _= 60 °C, or according to UL 508 at T_ out _= 50 °C_
|**Model**|**_P_o nom**|**_T_C max**|**Derate below**|**Derate below**|**derate by**|
|---|---|---|---|---|---|
||**[W]**|**[°C]**|**_V_i [VAC]**|**_V_i [VDC]**|**[W/V]**|
|LWR1601-6E|124|80|108|98|-0.67|
|LWN1601/2660-6E|247|89|125|115|-1.25|
|LWR1701-6E|123|80|125|115|-1.25|
|LWN1701-6E|245|90|125|115|-1.25|
|LWR1801-6E|124|80|98|93|-0.67|
|LWN1801/2880-6E|247|89|125|115|-1.25|
_Table 5b: P_ o _derating according to UL 60950-1 2nd edition at T_ A _= 50 °C, or according to UL 508 at T_ out _= 40 °C_
|**Model**|**_P_o nom**|**_T_C max**|**Derate below**|**Derate below**|**derate by**|
|---|---|---|---|---|---|
||**[W]**|**[°C]**|**_V_i [VAC]**|**_V_i [VDC]**|**[W/V]**|
|LWR1601-6E|124|76|98|no derating|-0.67|
|LWN1601/2660-6E|247|86|115|105|-1.25|
|LWR1801-6E|124|76|93|no derating|-0.67|
|LWN1801/2880-6E|247|86|105|95|-1.25|
## **Input Fuse and Protection**
A fast-blow fuse (Schurter F 6.3A, 5 × 20 mm), protected by a sleeve, is connected to the input L or Vi+. EW models have a smaller fuse (250 V, 4 × 9 mm, SOC NT3 6.3A V009, UL-recognized E-39265). For DC input voltages above 250 V consult the _Installation Instructions_ .
Converters with option F have large fuses (F6.3A, 5 × 20 mm). The DC input voltage for converters with option F is limited to 250 V.
A VDR and a symmetrical input filter form an effective protection against input transients.
An under- and an overvoltage lockout protect the converter, which is disabled below _V_ i min and above _V_ i max by an internally generated inhibit signal.
The built-in bridge rectifier (LW models) provides reverse polarity protection at the input if operated from DC.
EW models are protected by the (blowing) input fuse in connection with the body diode of the main transistor. Option Q offers a serial diode, but this reduces the efficiency by approx. 1%.
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W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Efficiency**
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**----- Start of picture text -----**<br>
04071<br>90<br>80<br>70<br>60<br>50<br>40<br>30<br>20<br>10<br>0 Io<br>0 0.2 0.4 0.6 0.8 1 Io nom<br>Vi = 125 VAC Vi = 230 VAC<br>**----- End of picture text -----**<br>
_Fig. 3 Efficiency versus load (LWN2660-6)_
## **Power Factor, Harmonics**
All converters feature active power factor correction.
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**----- Start of picture text -----**<br>
mA/W LWN1701-6E 04070b<br>4<br>3 Limit class D according<br>to IEC/EN 61000-3-2<br>2<br>1<br>0<br>3 5 7 9 11 13 Harm.<br>**----- End of picture text -----**<br>
_Fig. 4 Harmonic currents at input current, measured at V_ i _= 230_ VAC _, I_ o _= I_ o nom _(LWN1701-6E)._
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**----- Start of picture text -----**<br>
PF<br>1 04069a<br>0.9<br>0.8<br>0.7<br>0.6<br>0.5<br>0.4<br>0.3<br>0.2<br>0.1<br>0 I o<br>0 0.2 0.4 0.6 0.8 1 I o nom<br>V i = 125 VAC<br>V i = 230 VAC<br>**----- End of picture text -----**<br>
_Fig. 5 Power factor versus load (LWN2660-6)_
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Page 8 of 29
W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Electrical Output Data**
_Table 6a: Output data of 125 Watt standard models. General conditions: T_ A _= 25 °C, unless T_ A _is specified; R input open-circuit_
|**Model**|**Model**|**Model**|**Model**||**LWR1301**|**EWR / LWR1601**|**EWR / LWR1601**|**LWR1701**|**LWR1801**|**Unit**|
|---|---|---|---|---|---|---|---|---|---|---|
|**Characteristics**|||**Conditions**||**min**<br>**typ**<br>**max**|**min**<br>**typ**|**max**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**||
|_V_o nom|Output voltage nominal 1||_V_i nom,_I_o nom||–|24.25<br>24.7|25.2|36.37<br>37.05<br>37.8|48.5<br>49.4<br>50.4|V|
|||||*|12.27<br>12.35<br>12.43|24.55<br>24.7|24.85|36.82<br>37.05<br>37.28|49.1<br>49.4<br>49.7||
|_V_o worst|Output voltage range of<br>tolerance||_V_i min–_V_i max,<br>_I_o= (0.1 – 1)_I_o n|om|12.0<br>12.9|24.0|25.8|36.0<br>38.7|48.0<br>51.6||
|_V_o L|Overvoltage protection||||14.25*<br>15*|28.5|30|42.75<br>45|57<br>60||
|_P_o nom|Nominal output power||_V_i= 100 V –_V_i|max|93*|124<br>5.0<br>5.1||123|124|W|
|_I_o nom|Output current nominal||||7.5*|||3.3|2.5|A|
|_I_o L|Output current limit3||_V_i min–_V_i max||7.58<br>8.6||5.7|3.37<br>3.8|2.53<br>2.9||
|_I_op|Output current boost4||typ. 1 s||11.3|7.5||5.0|3.75||
|_v_o|Ripple & noise|EWR|_V_i= 110 VDC, _I_o nom||–|500||–|–|mVpp|
|||LWR|_V_i= 230 VAC,<br>_f_i<br> = 50 Hz,_I_o nom||100|100||100|100||
||||||11002|11002||12002|12002||
|∆_V_o u|Static line regulation||100 V –_V_i max,_I_o nom||±0.08|±0.1||±0.15|±0.15|V|
|∆_V_o I|Static load regulation<br>(droop)||_Vi nom_<br>_I_o= (0.1 – 1)_I_o nom||–0.2|–0.4||–0.6|–0.8||
|_v_od|Dynamic load regulation<br>Voltage deviation<br>Recovery time||_Vi nom ,_<br>_I_o= (0.5↔1)_I_o nom||±1|±1.2||±1.5|±1.8||
||||||40|40||80|80|ms|
|αvo|Temperature coefcient||_TC min– TC max_||±0.02|±0.02||±0.02|±0.02|%/K|
|_t_or|Start-up time||_V_i= 0→ _V_i nom,_I_o nom||700|700||700|700|ms|
|_t_oh min|Hold-up time||_I_o nom,<br>_V_o nom→ 0.8_V_o nom||10|6 / 15||20|25||
- Converters with feature E and version ≥ 106
- 1 Setting voltage with open R-input
> 2 Superimposed low frequency ripple at 2 • _f_ i
3 Rectangular current limit characteristic (continuous operation)
- 4 Short-term peak power capability 150% of _P_ o nom for approx. 1 s
**==> picture [70 x 37] intentionally omitted <==**
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Page 9 of 29
## W Series
## 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
_Table 6b: Output data of 250 Watt single-output standard models. General conditions as in table 6a_
|_Table 6b: Output data of 250 Watt single-output standard models. General conditions as in table 6a_|_Table 6b: Output data of 250 Watt single-output standard models. General conditions as in table 6a_|_Table 6b: Output data of 250 Watt single-output standard models. General conditions as in table 6a_|_Table 6b: Output data of 250 Watt single-output standard models. General conditions as in table 6a_|_Table 6b: Output data of 250 Watt single-output standard models. General conditions as in table 6a_|_Table 6b: Output data of 250 Watt single-output standard models. General conditions as in table 6a_|_Table 6b: Output data of 250 Watt single-output standard models. General conditions as in table 6a_|
|---|---|---|---|---|---|---|
|**Model**<br>**LWN1301**<br>**LWN1601**<br>**LWN1701**<br>**LWN1801**<br>**Unit**<br>**Characteristics**<br>**Conditions**<br>**min**<br>**typ**<br>**max**<br>**min**<br>**typ**<br>**max**<br>**min**<br>**typ**<br>**max**<br>**min**<br>**typ**<br>**max**<br>_V_o nom<br>Output voltage nominal 1<br>_V_i nom,_I_o nom<br>–<br>24.25<br>24.7<br>25.2<br>36.37<br>37.05<br>37.8<br>48.5<br>49.4<br>50.4<br>V<br>*<br>12.27<br>12.35<br>12.43<br>24.55<br>24.7<br>24.85<br>36.82<br>37.05<br>37.28<br>49.1<br>49.4<br>49.7<br>~~rs~~<br>~~Gen) rs(~~<br>~~Re~~<br>~~es es ee~~<br>~~eses~~|||||||
|_V_o worst<br>Output voltage range of|_V_i min–_V_i max,|12.0<br>12.9<br>24.0<br>25.8<br>36.0<br>38.7|48.0||51.6||
|tolerance|_I_o= (0.1 – 1)_I_o nom||||||
|_V_o L<br>Overvoltage protection<br>14.25*<br>15*<br>28.5<br>30<br>42.75<br>45<br>_P_o nom<br>Nominal output power<br>_V_i= 100 V –_V_i max<br>173*<br>247<br>245<br>_I_o nom<br>Output current nominal<br>14*<br>10<br>6.6<br>_I_o L<br>Output current limit3<br>_V_i min–_V_i max<br>14.1*<br>16*<br>10.1<br>11.4<br>6.7<br>7.6<br>_I_op<br>Output current boost4<br>typ. 1 s<br>21<br>15<br>10<br>_v_o<br>Ripple & noise<br>_V_i= 230 VAC,<br>_f_i<br> = 50 Hz,_I_o nom<br>100<br>100<br>100<br>11002<br>11002<br>12002<br>∆_V_o u<br>Static line regulation<br>100 V –_V_i max,_I_o nom<br>±0.08<br>±0.1<br>±0.15<br>~~a~~<br>~~ee~~<br>~~| |~~<br>~~eseses~~<br>~~| |~~<br>~~ee~~<br>~~es~~<br>~~a~~<br>~~rs~~<br>~~a~~<br>~~ee ssGQ~~<br>~~es es ee~~<br>~~ee~~<br>~~ee~~|||57<br>5.1|247<br>5.0<br>7.5<br>100<br>12002<br>±0.15|60<br>5.7|W<br>A<br>mVpp<br>V|
|∆_V_o I<br>Static load regulation<br>(droop)|_Vi nom,_<br>_I_o= (0.1 – 1)_I_o nom|–0.2<br>–0.4<br>–0.6||–0.8|||
|_v_od<br>Dynamic load regulation|_Vi nom ,_|±1<br>±1.2<br>±1.5||±1.8|||
|Voltage deviation|_I_o= (0.5↔1)_I_o nom||||||
|Recovery time||40<br>40<br>80||80||ms|
|αvo<br>Temperature coefficient<br>_TC min– TC max_<br>±0.02<br>±0.02<br>±0.02<br>±0.02<br>%/K<br>_t_or<br>Start-up time<br>_V_i= 0→ _V_i nom,_I_o nom<br>700<br>700<br>700<br>700<br>ms<br>_t_oh min<br>Hold-up time<br>_I_o nom,<br>_V_o nom→ 0.8_V_o nom<br>10<br>15<br>20<br>25<br>_Table 6c: Output data of 250 Watt double-output standard models. General conditions as in table 6a_<br>**Model**<br>**LWN2320**<br>**EWN/LWN2660**<br>**LWN2770**<br>**LWN2880**<br>**Unit**<br>**Characteristics**<br>**Conditions**<br>**min**<br>**typ**<br>**max**<br>**min**<br>**typ**<br>**max**<br>**min**<br>**typ**<br>**max**<br>**min**<br>**typ**<br>**max**<br>~~a ee ee~~<br>~~rs~~<br>~~Qe~~<br>~~Cees~~<br>~~es(OG~~|||||||
|_V_o nom<br>Output voltage nominal 1|_V_i nom,_I_o nom<br>*|–<br>24.25<br>24.7<br>25.2<br>36.37<br>37.05<br>37.8<br>48.5<br>49.4<br>50.4<br>12.27<br>12.35<br>12.43<br>24.55<br>24.7<br>24.85<br>36.82<br>37.05<br>37.28<br>49.1<br>49.4<br>49.7<br>~~ee eses~~<br>~~es~~<br>~~es es~~||||V|
|_V_o worst<br>Output voltage range of|_V_i min–_V_i max,|12.0<br>12.9<br>24.0<br>25.8<br>36.0<br>38.7|48.0||51.6||
|tolerance|_I_o= (0.1 – 1)_I_o nom||||||
|_V_o L<br>Overvoltage protection<br>14.25*<br>15*<br>28.5<br>30<br>42.75<br>45<br>57<br>60<br>_P_o nom<br>Nominal output power<br>_V_i= 100 V –_V_i max<br>173*<br>247<br>245<br>247<br>_I_o nom<br>Output current nominal<br>2 x 7*<br>2 x 5<br>2 x 3.3<br>2 x 2.5<br>_I_o L<br>Output current limit3<br>_V_i min–_V_i max<br>7.1*<br>8.0*<br>5.1<br>5.7<br>3.37<br>3.8<br>2.53<br>2.9<br>_I_op<br>Output current boost4<br>typ. 1 s<br>2 x 10.5*<br>2 x 7.5<br>2 x 5.0<br>2 x 3.75<br>_v_o<br>Ripple & noise<br>_V_i= 230 VAC,<br>_f_i<br> = 50 Hz,_I_o nom<br>100<br>1005<br>100<br>100<br>11002<br>11002<br>12002<br>12002<br>∆_V_o u<br>Static line regulation<br>100 V –_V_i max,_I_o nom<br>±0.08<br>±0.1<br>±0.15<br>±0.15<br>~~a~~<br>~~eeeeGers~~<br>~~a~~<br>~~a~~<br>~~Pf~~<br>~~ee~~<br>~~a~~<br>~~eeeeGe~~<br>~~a es~~<br>~~rs(~~<br>~~es ee~~<br>~~ee ee~~<br>~~i~~||||||W<br>A<br>mVpp<br>V|
|∆_V_o I<br>Static load regulation<br>(droop)|_Vi nom,_<br>_I_o= (0.1 – 1)_I_o nom|–0.2<br>–0.4<br>–0.6||–0.8|||
|_v_od<br>Dynamic load regulation|_Vi nom ,_|±1<br>±1.2<br>±1.5||±1.8|||
|Voltage deviation|_I_o= (0.5↔1)_I_o nom||||||
|Recovery time||40<br>40<br>80||80||ms|
|αvo<br>Temperature coefficient<br>~~Pe~~|_TC min– TC max_|±0.02<br>±0.02<br>±0.02||±0.02||%/K|
|_t_or<br>Start-up time<br>~~ee~~|_V_i= 0→ _V_i nom,_I_o nom|700<br>700<br>700||700||ms|
|_t_oh min<br>Hold-up time|_I_o nom,|10<br>6 / 15<br>20||25|||
||_V_o nom→ 0.8_V_o nom||||||
- Converters with feature E and version ≥ 106
- 1 Setting voltage with open R-input
- 2 Superimposed low frequency ripple at 2 • _f_ i
- 3 Rectangular current limit characteristic (continuous operation)
- 4 Short-term peak power capability 150% of _P_ o nom for approx. 1 s
- 5 EWN2660: 500 mV @ _V_ i = 110 VDC
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Page 10 of 29
## W Series
## 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
|**Model**<br>~~ss~~|**Model**<br>~~ss~~|**Model**<br>~~ss~~|**LWR1140-6EM1**<br>~~ss~~|**LWR1240-6EM1**<br>~~ss~~<br>~~(Of~~|**LWR1840-6EM1**<br>~~ss~~<br>~~(Of~~|**LWR1740-6EM1**<br>~~ss~~|**Unit**<br>~~ss~~|
|---|---|---|---|---|---|---|---|
|**Characteristics**<br>~~ss~~||**Conditions**<br>~~ss~~|**min**<br>**typ**<br>**max**<br>~~ss~~|**min**<br>**typ**<br>**max**<br>~~ss~~<br>~~(Of~~|**min**<br>**typ**<br>**max**<br>~~ss~~<br>~~(Of~~|**min**<br>**typ**<br>**max**<br>~~ss~~|~~ss~~|
|_V_o safe<br>~~a~~|Output setting voltage1|_V_i nom,_I_o nom|12.25<br>12.84<br>13.15|24.5<br>25.68<br>26.3|36.75<br>38.52<br>39.45|49<br>51.36<br>52.6|V<br>~~7~~|
|_V_Bat<br>~~a~~|Output voltage (max)<br>controlled by R input<br>~~ee es~~|_V_i min–_V_i max,<br>_I_o= (0.1 – 1)_I_o nom<br>~~es~~|14.65<br>~~rs~~|29.3|43.95|58.6||
|_V_o L<br>~~a~~<br>~~P|~~|Overvoltage protection<br>~~ee es~~<br>~~P|~~|~~es~~|15.45*<br>16.25*<br>~~rs~~<br>~~ee~~|30.9<br>32.5<br>~~es es~~|46.35<br>48.75<br>~~es~~|61.8<br>65||
|_P_o nom<br>~~a~~<br>~~P|~~<br>~~| |~~<br>~~a~~|Nominal output power<br>~~ee es~~<br>~~P|~~<br>~~|~~|_V_i= 100 V –_V_i max<br>~~es~~<br>~~ee~~|104*<br>~~rs~~<br>~~ee~~<br>~~ee~~|115<br>4.2<br>4.24<br>4.8<br> ~~es es~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|115<br>~~es~~<br>~~ee~~|115<br>~~ee~~|W<br>~~7~~<br>~~ee~~|
|_I_o nom<br>~~P|~~<br>~~| |~~<br>~~a~~<br>~~I~~|Output current nominal<br>~~P|~~<br>~~|~~<br>~~ee~~||7.5*<br>~~ee ~~<br>~~ee~~<br>~~es~~||2.8<br>~~es~~<br>~~ee~~|2.1<br>~~ee~~|A<br>~~ee~~<br>~~ee~~|
|_I_o L<br>~~| |~~<br>~~a~~<br>~~I~~|Output current limit3<br>~~|~~<br>~~ee~~<br>~~ee~~|_V_i min–_V_i max<br>~~ee~~<br>~~rs~~|7.58*<br>8.6*<br>~~ee~~<br>~~es~~<br>~~ee~~||2.9<br>3.3<br>~~ee~~<br>~~ee~~|2.2<br>2.5<br>~~ee~~<br>~~ee~~||
|_I_op<br>~~a~~<br>~~I~~|Output current boost4<br>~~ee~~<br>~~ee~~|typ. 1 s<br>~~ee ~~<br>~~rs~~|11.3*<br> ~~es~~<br>~~ee~~|6.3<br>~~ee~~<br>~~ee~~<br>~~es~~|4.2<br>~~ee~~<br>~~es~~|3.2<br>~~ee~~||
|_v_o|Ripple & noise<br>~~ee~~|_V_i= 230 VAC,<br>_f_i<br> = 50 Hz,_I_o nom<br>~~rs~~|100<br>~~ee~~|100<br>~~ee~~<br>~~es~~<br>~~es es~~|100<br>~~ee~~<br>~~es~~<br>~~es~~|100<br>~~ee~~|mVpp<br>~~ee~~<br>~~ee~~<br>~~-~~|
||||11002<br>~~ee~~<br>~~ee~~|11002<br>~~ee~~<br>~~es~~<br>~~ee~~<br>~~es es~~|12002<br>~~ee~~<br>~~es~~<br>~~ee~~<br>~~es~~|12002<br>~~ee~~<br>~~ee~~||
|∆_V_o u|Static line regulation|100 V –_V_i max,_I_o nom|±0.08<br>~~ee~~|±0.1<br>~~ee~~<br>~~es es~~|±0.15<br>~~ee~~<br>~~es~~|±0.15<br>~~ee~~|V<br>~~ee~~<br>~~-~~|
|∆_V_o I|Static load regulation<br>(droop)|_Vi nom,_<br>_I_o= (0.1 – 1)_I_o nom|–0.2|–0.4<br>~~es es~~|–0.6<br>~~es~~|–0.8||
|_v_od<br>~~a~~|Dynamic load regulation<br>Voltage deviation<br>Recovery time<br>~~es~~|_Vi nom ,_<br>_I_o= (0.5↔1)_I_o nom<br>~~es~~|±1.2|±1.2<br>~~es es~~|±1.6<br>~~es~~|±1.9||
||||40<br>~~rs~~|40<br>~~es es~~<br>~~Ge~~<br>~~QO~~|80<br>~~es~~<br>~~QO~~|80|ms<br>~~-~~|
|αvo<br>~~a~~<br>~~a~~|Temperature coefficient<br>~~es~~<br>~~ee~~|_TC min– TC max_<br>~~es~~<br>~~es~~|±0.02<br>~~rs~~|±0.02<br>~~Ge~~<br>~~QO~~|±0.02<br>~~QO~~|±0.02|%/K|
|_t_or<br>~~a~~<br>~~a~~|Start-up time<br>~~es~~<br>~~ee~~|_V_i= 0→ _V_i nom,_I_o nom<br>~~es~~<br>~~es~~|700<br>~~rs~~|700<br>~~Ge~~<br>~~QO~~|700<br>~~QO~~|700|ms|
_Table 7b: Output data of 250 Watt battery charger models. General conditions as in table 7a_
|~~Ce~~|~~Ce~~|~~Ce~~||||||
|---|---|---|---|---|---|---|---|
|**Model**<br>~~Ce~~|||**LWN1140-6EM1**|**LWN1240-6EM1**|**LWN1840-6EM1**|**LWN1740-6EM1**|**Unit**|
|**Characteristics**<br>~~Ce~~||**Conditions**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**|**min**<br>**typ**<br>**max**||
|_V_o safe<br>~~a~~|Output setting voltage1<br>|_V_i nom,_I_o nom<br>|12.25<br>12.84<br>13.15<br>|24.5<br>25.68<br>26.3|36.75<br>38.52<br>39.45|49<br>51.36<br>52.6<br>~~-~~|V<br>~~-~~|
|_V_Bat<br>~~a~~|Output voltage (max)<br>controlled by R input<br>~~es ees~~|_V_i min–_V_i max,<br>_I_o= (0.1 – 1)_I_o nom<br>~~ees es~~|14.65<br>~~es~~|29.3<br>~~sO~~|43.95<br>~~sO~~|58.6<br>~~-~~||
|_V_o L<br>~~a ~~|Overvoltage protection<br> ~~es ees~~|~~ees es~~|15.45*<br>16.25*<br>~~es~~|30.9<br>32.5<br>~~sO~~|46.35<br>48.75<br>~~sO~~|61.8<br>65<br>~~-~~||
|_P_o nom<br> <br>~~|~~<br>~~|~~<br>~~es~~|Nominal output power<br> ~~es ees~~<br>~~|~~|_V_i= 100 V –_V_i max<br>~~ees es~~<br>~~rs~~|194*<br>~~es~~<br>~~ee~~|230<br>8.4<br>8.48<br>9.6<br>~~sO~~<br>~~ee~~<br>~~es~~<br>~~Gs~~|230<br>~~sO~~<br>~~ee~~|230<br>~~ee~~|W|
|_I_o nom<br>~~|~~<br>~~|~~<br>~~es~~<br>~~a~~|Output current nominal<br>~~|~~<br>~~es~~||14*<br>~~ee~~||5.6<br>~~ee~~|4.2<br>~~ee~~|A|
|_I_o L<br>~~|~~<br>~~|~~<br>~~es~~<br>~~a~~|Output current limit3<br>~~|~~<br>~~es~~<br>~~ee~~|_V_i min–_V_i max<br>~~rs~~<br>~~es~~|14.1*<br>16.0*<br>~~ee~~<br>~~rs~~||5.69<br>6.4<br>~~ee~~<br>~~Gs~~|4.3<br>5.0<br>~~ee~~||
|_I_op<br>~~es~~<br>~~a~~|Output current boost4<br>~~es~~<br>~~ee~~|typ. 1 s<br>~~rs~~<br>~~es~~|21*<br>~~rs~~|12.6<br>~~es~~<br>~~Gs~~<br>~~es ee~~|8.4<br>~~Gs~~<br>~~ee~~|6.3||
|_v_o|Ripple & noise<br>~~ee~~|_V_i= 230 VAC,<br>_f_i<br> = 50 Hz,_I_o nom<br>~~es ~~|100<br> ~~rs~~<br>~~ee~~|100<br>~~Gs~~<br>~~ee~~<br>~~es ee~~<br>~~es~~|100<br>~~Gs~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|100<br>~~ee~~<br>~~-~~|mVpp<br>~~-~~|
||||11002<br>~~ee~~|11002<br>~~es ee~~<br>~~ee~~<br>~~es~~|12002<br>~~ee~~<br>~~ee~~<br>~~ee~~|12002<br>~~ee~~<br>~~-~~||
|∆_V_o u|Static line regulation|100 V –_V_i max,_I_o nom|±0.08|±0.1<br>~~es~~|±0.15<br>~~ee~~|±0.15<br>~~-~~|V<br>~~-~~|
|∆_V_o I|Static load regulation<br>(droop)|_Vi nom,_<br>_I_o= (0.1 – 1)_I_o nom|–0.2|–0.4<br>~~es~~|–0.6<br>~~ee~~|–0.8<br>~~-~~||
|_v_od|Dynamic load regulation<br>Voltage deviation<br>Recovery time|_Vi nom ,_<br>_I_o= (0.5↔1)_I_o nom|±1.2|±1.2<br>~~es~~|±1.6<br>~~ee~~|±1.9<br>~~-~~||
||||40|40|80|80|ms|
|αvo<br>~~Pe~~<br>~~a~~|Temperature coefficient<br>~~Pe~~<br>~~ee~~|_TC min– TC max_<br>~~Pe~~<br>~~es~~|±0.02<br>~~Pe~~|±0.02<br>~~Pe~~|±0.02<br>~~Pe~~|±0.02<br>~~Pe~~|%/K<br>~~Pe~~|
|_t_or<br>~~a~~|Start-up time<br>~~ee~~|_V_i= 0→ _V_i nom,_I_o nom<br>~~es~~|700|700|700|700|ms|
- Converters with feature E and version ≥ 106
- 1 Setting voltage with open R-input = _V_ o safe
- 2 Superimposed low frequency ripple at 2 • _f_ i
- 3 Rectangular current limit characteristic (continuous operation)
- 4 Short-term peak power capability 150% of _P_ o nom for approx. 1 s
tech.support@psbel.com **belfuse.com/power-solutions**
© 2023 Bel Fuse Inc. BCD20020-G_AH 9 January 2023
Page 11 of 29
## W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Parallel Operation**
Double-output models exhibit an independent control logic each. Both outputs can be con nected in parallel, provided that options S (included in M1) and R are not used, since they influence only the 2[nd] output. The two power trains share the current due to their output voltage droop characteristic.
Up to 3 converters with the same output voltage may be operated in parallel. It is possible to parallel W Series with X Series converters.
Reasonable current sharing is achieved by the droop characteristic. Correct mode of operation is highly dependent upon the wiring of the converters and the impedance of these wires. Use wires with equal length and equal cross sections of min. 1.5 mm[2] . The best results for parallel operation can be achieved with the wiring shown in fig. 6.
Parallel operation of single-output models using the option R (output voltage adjust) is possible, but not recommended. Refer to fig. 6; the connections between the pins 8 and 9 (both Vo–) should be as short as possible.
**Note** : Parallel operation is not possible, if a temperature sensor is connected, as the sensor eliminates the output voltage droop.
**Note** : For ORing diodes, we recommend to use Schottky diodes, mounted on a common heatsink to avoid thermal run away (or the use of double diodes).
**==> picture [261 x 383] intentionally omitted <==**
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11054b<br>AUX 10<br>VR<br>Vo- 9<br>Vo- 8<br>Vi Vo+ 7<br>Vo+ 6<br>Vo- 5<br>Vo- 4<br>Vo+ 3<br>Vo+ 2<br>AUX 10<br>Vo- 9<br>Vo- 8<br>Vi Vo+ 7<br>+<br>Vo+ 6 Load<br>Vo- 5 _<br>Vo- 4<br>Vo+ 3<br>Vo+ 2<br>AUX 10<br>Vo- 9<br>Vo- 8<br>Vi Vo+ 7<br>Vo+ 6<br>Vo- 5<br>Vo- 4<br>Vo+ 3<br>Vo+ 2 Additional wiring for output currents Io ≥ 10 A<br>Additional wiring, if using the R-input<br>**----- End of picture text -----**<br>
_Fig. 6_
_Wiring for single-output converters connected in parallel. Additional wiring for higher output currents and with the use of option R is shown._
## **Series Connection**
Series connection of several outputs up to 150 V is possible. Exceeding an output voltage of 60 V, the output is not ES1.
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W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Output Characteristic and Protection**
The output characteristic, individual for each powertrain, is rectangular with a droop to ease parallel operation; see fig. 7.
However, a 50% higher output current is possible for a short time, such allowing start-up of loads or charging of capacitors; see fig. 8. Each output is independently protected against internal overvoltage by means of a second control loop. When the output voltage exceeds _V_ o L, the respective output is disabled.
**==> picture [464 x 102] intentionally omitted <==**
**----- Start of picture text -----**<br>
Vo /Vo nom 05181a Io / Io nom<br>1.6 05194b<br>1.0<br>1.4<br>0.8 ET 0 ee<br>1.2<br>0.6<br>1.0<br>0.4 ee es |<br>0.2 FT 0.8 | | | |ff<br>0 0 es 0.2 0.4 0.6 0.8 1.0 1.2Io /Io nom 0.6 - 0.5 ee 0 0.5 1 1.5 2 2.5 s<br>**----- End of picture text -----**<br>
_Fig. 7_
_V_ o _versus I_ o _(single-output model, typical values)._
_Fig. 8_
_Short term peak power characteristic: overcurrent versus time (typical values)._
## **Overtemperature Protection**
A built-in temperature sensor protects each powertrain is independently protected against over temperature. When a certain temperature is reached, the concerned powertrain reduces its output power continuously.
## **Thermal Considerations**
The thermal conditions are influenced by input voltage, output current, airflow, and temperature of surrounding components. _T_ A max is therefore, contrary to _T_ C max, an indicative value only.
**Caution:** The installer must ensure that under all operating conditions _T_ C remains within the limits stated in the table _Temperature specifications_ .
**Note:** Sufficient forced cooling allows _T_ A to be higher than _T_ A max provided that _T_ C max is not exceeded. It is recommended that continuous operation under worst case conditions of the following 3 parameters be avoided: Minimum input voltage, maximum output power, and maximum temperature.
## **Battery Charging and Temperature Sensor**
The battery charger models exhibit the option M1 and have been designed to charge lead-acid batteries. The R-input allows for connecting a battery-specific temperature sensor, which provides temperature controlled adjust of the trickle charge voltage. This optimizes charging as well as battery life time. Depending upon the cell voltage and the temperature coefficient of the battery, different sensor types are available; see _Accessories_ .
**Note** : Parallel operation is not possible, if the temperature sensor is connected to the paralleled outputs Vo+, as the sensor eliminates the output voltage droop.
However, it is possible to insert bleeding resistors in the Vo+ output lines of each converter in order to create a droop of approx. 0.6 V @ _I_ o nom for 24 V outputs (1.2 V @ _I_ o nom for 48V outputs), but this creates considerable power losses.
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**----- Start of picture text -----**<br>
Cell voltage [V]2.45 06139b Vo+ 03099d<br>2.40 Input Power Vo– Load<br>TTT 4 supply =<br>2.35 R<br>SS EE =<br>2.30<br>“Sol I Lt] pS<br>2.25<br>2.20 i ! aL |<br>SSS qt | +<br>2.15 Vo safe<br>| Et | | PSs ! h es<br>2.10<br>–20 –10 0 10 20 30 40 50 °C<br>Temperature sensor Battery<br>VC = 2.27 V, –3 mV/K VC = 2.27 V, –3.5 mV/K<br>VC = 2.23 V, –3 mV/K VC = 2.23 V, –3.5 mV/K<br>–<br>+<br>**----- End of picture text -----**<br>
_Fig. 9 Trickle charge voltage versus temperature for different temperature coefficients (V_ o safe _with disconnected sensor)_
_Fig. 10_
_Schematic circuit diagram of a system with battery backup and temperature-controlled charging._
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W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Electromagnetic Compatibility (EMC)**
Compliant with EMC standards EN IEC 61204-3 / EN 50121-3-2.
## **Electromagnetic Immunity**
The W Series has been successfully tested to the following specifications:
_Table 8: Electromagnetic immunity (type tests)_
|**Phenomenon**|**Standard**|**Level**|**Coupling mode**1|**Value**<br>**applied**|**Waveform**|**Source**<br>**imped.**|**Test procedure**|**In**<br>**oper.**|**Perf.**<br>**crit.** 2|
|---|---|---|---|---|---|---|---|---|---|
|Electrostatic<br>discharge<br>(to case)|IEC/EN<br>61000-4-2|43|contact discharge|8000 Vp|1/50 ns|330 Ω|10 positive and<br>10 negative<br>discharges|yes|A|
||||air discharge|15000 Vp||||||
|Electromagnetic<br>feld RF|IEC/EN<br>61000-4-3|34|antenna|10 V/m4|AM 80%,<br>1 kHz sinusoidal|N/A|80 – 1000 MHz|yes|A|
||ENV 50204|3|antenna|10 V/m|50% duty cycle,<br>200 Hz repet. frequ.|N/A|900 ± 5 Mhz|yes|A|
||IEC/EN<br>61000-4-3<br>(EW models)|5|antenna|20 V/m|AM 80%,<br>1 kHz sinusoidal|N/A|80 – 1000 MHz|yes|A|
|||||10 V/m|||1400 – 2100 MHz|||
|||||5 V/m|||2100 – 2500 MHz|||
|Electrical fast<br>transients/burst|IEC/EN<br>61000-4-4|3|capacitive, o/c|±2000 Vp|bursts of 5/50 ns<br>5 kHz over 15 ms;<br>burst period: 300 ms|50 Ω|60 s positive<br>60 s negative<br>transients per<br>coupling mode|yes|A|
|||36|±i/c, +i/–i<br>direct coupling|±2000 Vp<br>6||||||
|Surges|IEC/EN<br>61000-4-5|37|+i/c, –i/c|±2000 Vp|1.2 / 50 µs|12 Ω|5 pos. & 5 neg.<br>surges per<br>coupling mode|yes|B|
||||+i/–i|±1000 Vp|1.2 / 50 µs|2 Ω||||
|Conducted<br>disturbances|IEC/EN<br>61000-4-6|38|i, o, signal wires|10 VAC<br>(140 dBµV)|AM 80%<br>1 kHz|150 Ω|0.15 – 80 MHz|yes|A|
|Power frequency<br>magnetic feld|IEC/EN<br>61000-4-8|–|–|100 A/m|50 and 60 Hz|–|x, y, and z axis|yes|A|
|Surges<br>(EW models)|IEC/EN<br>50155:2001|wave<br>A9|+i/c, –i/c|1800 Vp|5/50 µs|5 Ω|5 pos. and 5<br>neg. pulses|yes|A|
> 1 i = input, o = output, c = case.
2 A = Normal operation, no deviation from specifications, B = Normal operation, temporary loss of function or deviation from specs. possible. 3 Exceeds EN 50121-3-2:2006 table 9.3 and EN 50121-4:2006 table 1.4.
> 4 EW models: 20 V/m, which corresponds to EN 50121-3-2:2006 table 9.1 and exceeds EN 50121-4:2006 table 1.1.
5 EW models only. Corresponds to EN 50121-3-2:2006 table 9.2 and EN 50121-4:2006 table 1.2 (compliance with digital mobile phones). 6 Corresponds to EN 50121-3-2:2006 table 7.2 and EN 50121-4:2006 table 2.2.
> 7 Complies with EN 50121-3-2:2006 table 7.3 and EN 50121-4:2006 table 2.3.
> 8 Corresponds to EN 50121-3-2:2006 table 8.1 and EN 50121-4:2006 table 3.1 (radio frequency common mode).
9 Corresponds to EN 50121-3-2:2000. Covers EN 50155:1995, RIA12, direct transients, waveform D (EW models only).
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125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## W Series
## **Emissions**
_Table 9: Electromagnetic emissions for LW models with feature E: (type tests with LWN1701-6EG)_
|**Phenomenon**<br>**Standards**|**Standards**|**Conditions**|**Results**|
|---|---|---|---|
|Harmonics<br>EN 61000-3-2:2006|EN 61000-3-2:2006|_V_i= 230 V,_V_o nom,_I_o nom|Class A, D|
|Voltage fluctuation and flicker<br>EN 61000-3-3 + A2:2005|EN 61000-3-3 + A2:2005|_V_i= 230 V,_V_o nom,_I_o nom|Complied|
**Note:** An external toroid ferrite core across the input lines reduces the emissions considerably.
_Fig. 11a Conducted emissions of LW models with feature E: Disturbances at the phase input according to EN 55032, measured at V_ i nom _and I_ o nom _. (LWN1701-6EG)_
_Fig. 11b Radiated emissions measured according to EN 55032 for LW models with feature E (LWN1701-6EG), antenna 3 m distance, horizontal polarized)_
**==> picture [232 x 114] intentionally omitted <==**
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PMM 8000 PLUS Limit: 61204bqp Detector: Peak, conducted Vi+, 6.6.06<br>dBµV EWN2660-0 U i =110VDC, Io =10A, outputs in parallel configuration<br>60 peep EN 55011 B<br>pe<br>40<br>Pa tl | (a ve<br>eesemee nme eRe i i<br>20<br>nt Eee LM .<br>Mane<br> 0 po Wl SAAN Poni]<br>PeeteEt ES<br>0.2 0.5 1 2 5 10 20 MHz<br>JM008<br>**----- End of picture text -----**<br>
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**----- Start of picture text -----**<br>
TÜV-Divina, ESVS 30:R&S, BBA 9106/UHALP 9107:Schwarzb., QP, 2006-05-29<br>dBµV/m Testdistance 10 m, EWN2660-0 Ui =110 V, Uo =24 V Io = 2 x 5 A<br>50<br>EN 55011 A<br>40 PUT I<br>30<br>, <25 dbµV/m<br>tf<br>20<br>10<br>0<br>30 50 100 200 500 1000 MHz<br>JM038a<br>**----- End of picture text -----**<br>
_Fig. 12a Conducted emissions of EW models: Disturbances (peak) at the phase input according to EN 55011, measured at V_ i nom _and I_ o nom _. (EWN2660-0)_
_Fig. 12b Radiated emissions of EW models, measured at V_ i nom _, I_ o nom _, accord. to EN 55011, antenna 10 m distance, (EWN2660-0)_
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W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **External EMC Filter for Models with Feature E**
An external EMC filter can be connected to the inputs lines of the converter. However, a small choke has to be included in the phase line to avoid interferences between the internal and external filter, which would cause dramatically increased low harmonics.
The figure below shows the used external filter configuration consisting of the inlet filter KMF1.1241.11 (4 A, Schurter www.schurter.com) and the decoupling choke EPCOS B82111B0000C018, 11 µH, 4 A, 6 × 20 mm.
**Note:** This filter allows for connection of an IEC inlet and is available with 1 or 2 incorporated fuses. A similar filter with AMP terminals (6.3 × 20 mm) is also available (Schurter FMLB 5500.2028).
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PE<br>**----- End of picture text -----**<br>
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JM007<br>L' Choke L x<br>PE' — PE<br>N' N Converter<br>**----- End of picture text -----**<br>
_Fig. 13a External filter to reduce conducted emissions of LW models with feature E (L1 = L2 = 1.6 mH, Cx = 47 nF, Cy = 2.2 nF)_
_Fig. 13b External inlet filter_
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W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Immunity to Environmental Conditions**
_Table 10: Mechanical stress and climatic_
|**Test method**|**Test method**|**Standard**|**Test Conditions**|**Status**|
|---|---|---|---|---|
|Cab|Damp heat steady<br>state|IEC/EN 60068-2-78<br>MIL-STD-810D section 507.2|Temperature:<br>40±2°C<br>Relative humidity:<br>93+2/-3%<br>Duration:<br>56 days|Converter<br>not operating|
|Kb|Salt mist, cyclic<br>(sodium chloride<br>NaCl solution)|IEC/EN 60068-2-52|Concentration:<br>5% (30 °C)<br>Duration:<br>2 h per cycle<br>Conditions:<br>40°C, 93% rel. humidity<br>Storage Duration:<br>3 cycles of 22 h|Converter<br>not operating|
|E b|Bump<br>(half-sinusoidal)|IEC/EN 60068-2-29<br>MIL-STD-810D sect. 516.3|Acceleration amplitude:<br>25 gn= 245 m/s2<br>Bump duration:<br>11 ms<br>6000 bumps:<br>1000 in each direction|Converter<br>not operating,<br>wall mounted1|
||||Acceleration amplitude:<br>10 gn= 98.1 m/s2<br>Bump duration:<br>11 ms<br>6000 bumps:<br>1000 in each direction|Converter<br>not operating,<br>on DIN-rail2|
|Fc|Vibration<br>(sinusoidal)|IEC/EN 60068-2-6<br>MIL-STD-810D sect. 514.3|Acceleration amplitude:<br>0.35 mm (10 – 60 Hz)<br>Frequency (1 Oct/min):<br>5 gn= 49 m/s2(60 – 2000 Hz)<br>Test duration:<br>7.5 h (2.5 h each axis)|Converter<br>operating,<br>wall mounted1|
||||Acceleration amplitude:<br>0.25 mm (10 – 60 Hz)<br>Frequency (1 Oct/min):<br>2 gn= 19 m/s2(60 – 2000 Hz)<br>Test duration:<br>7.5 h (2.5 h each axis)|Converter<br>operating,<br>on DIN-rail2|
|Ea|Shock<br>(half-sinusoidal)|IEC/EN 60068-2-27<br>MIL-STD-810D sect. 516.3|Acceleration amplitude:<br>50 gn= 490 m/s2<br>Bump duration:<br>11 ms<br>Number of bumps:<br>18 (3 in each direction)|Converter<br>not operating,<br>wall mounted1|
||Shock|EN 50155/EN 61373 3<br>sect. 10, class A and B<br>body mounted 4|Acceleration amplitude:<br>5.1 gn<br>Bump duration:<br>30 ms<br>Number of bumps:<br>18 (3 in each direction)|Converter<br>operating,<br>on DIN-rail2|
|Fh|Random vibration<br>broad band, digital<br>control & guidance|IEC/EN 60068-2-64|Acceleration spectral density:<br>0.05 gn<br>2/Hz<br>Frequency band:<br>8 – 500 Hz<br>Acceleration magnitude:<br>4.9 gn rms<br>Test duration:<br>3 h (1 h each axis)|Converter<br>operating,<br>wall mounted1|
|Fda|Random vibration<br>wide band, high<br>reproducibility|IEC/EN 60068-2-35|Acceleration spectral density:<br>0.01 gn<br>2/Hz<br>Frequency band:<br>20 – 500 Hz<br>Acceleration magnitude:<br>2.2 gn rms<br>Test duration:<br>1.5 h (0.5 h each axis)|Converter<br>operating,<br>mounted on<br>DIN-rail2|
||Simulated long<br>life time testing at<br>increased random<br>vibration levels|EN 50155/EN 61373 3<br>sect. 8 and 9, class B<br>body mounted 3|Acceleration spectral density:<br>0.01 gn<br>2/Hz<br>Frequency band:<br>5 – 150 Hz<br>Acceleration magnitude:<br>0.8 gn rms<br>Test duration:<br>1.5 h (0.5 h each axis)|Converter<br>operating,<br>mounted on<br>DIN-rail2|
- 1 Wall-mounted with brackets UMB-W [HZZ00618]; see _Accessories_
> 2 Fastened on a DIN-rail with 2 additional DIN-rail fixing brackets DMB-EWG, see _Accessories._ This covers also wall-mounting with brackets, because wall mounting performs better in vibration test.
- 3 EW models (railway standards)
- 4 Body mounted = chassis of a railway coach
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## W Series
## 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Temperatures**
_Table 11: Temperature specifications, valid for an air pressure of 800 - 1200 hPa (800 - 1200 mbar)_
|**Model**|**Model**||**LW models -6**|**EW models -0**|**Unit**|
|---|---|---|---|---|---|
|**Characteristics**||**Conditions**|**min**<br>**max**|**min**<br>**max**||
|_T_A|Ambient temperature|Converter operating1|–40<br>60|–40<br>703|° C|
|_T_C|Case temperature 2||–40<br>902|–40<br>903||
|_T_S|Storage temperature|Non operational|–40<br>100|–40<br>100||
- 1 See _Thermal Considerations_
- 2 See table 5 _P_ o _derating_
3 Mounted in vertical position
## **Failure Rates**
_Table 12: MTBF_
|**Failure Rates**<br>_Table 12: MTBF_|||||||
|---|---|---|---|---|---|---|
|**Values at specifed**<br>**case temperature**|**Module types**|**Ground benign**<br>40 °C|**Ground fxed**||**Ground mobile**<br>50 °C|**Unit**|
||||40 °C|70 °C|||
|MTBF1|LWR1xxx|892 000|180 000|197 000|68 000|h|
||LWN1xxx|644 000|131 000|72 000|51 000||
||LWN2xxx|522 000|101 000|55 000|38 000||
- 1 Calculated in accordance with MIL-HDBK-217E, notice 2.
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## W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Mechanical Data**
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Dimensions in mm.<br>122.8 (4.84")<br>113.6 (4.47") 108 (4.25") ProjectionEuropean<br>40 (1.6") 106.6 (4.2") 103 (4.05")<br>29.4 (1.16")<br>09107c<br>TC Wall mounting<br>brackets<br>(accessories)<br>D-SUB Male<br>connector<br>31 (1.22")<br>Option M Option M LED<br>(female connector) (female connector)<br>Measuring point for<br>case temperature TC<br>15 (0.59")<br>)(1.3"<br>138 (5.43") 33 49 (1.93") z axis (vertical)<br>13 (0.51")<br>43 (1.69")<br>x axis<br>**----- End of picture text -----**<br>
_Fig. 14 Case W01 EWN/LWN: weight approx. 1400 g EWR/LWR: weight approx. 1200 g Case designed by ATP, Munich._
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W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Safety and Installation Instructions**
## **Terminal Allocation**
The terminal allocation tables define the electrical potential of the converters.
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10066 10067<br>1 2 3<br>1 2 3 4 5 6 7 8 9 10 11<br>**----- End of picture text -----**<br>
_Fig. 15a View of the input terminals (cage clamp style)_
_Fig. 15b View of the output terminals (cage clamp style)_
## _Table 13a: Input terminals of LW models_
|**Pin no.**|**Pin designation**|**Pin designation**|**Electrical determination**|
|---|---|---|---|
|1|||Protective earth PE|
|2|N|~~~~~|Input neutral, DC negative|
|3|L|~~~~~|Input phase, DC positive|
_Table 13b: Input terminals of EW models_
|**Pin no.**|**Pin designation**|**Electrical determination**|
|---|---|---|
|1||Protective earth PE|
|2|Vi-|Input negative|
|3|Vi+|Input positive|
## _Table 13c: Terminal allocation output side_
|**Pin no.**|**Pin des.**|**Single output**|**Double output**|
|---|---|---|---|
|1||Functional earth<br>to load|Functional earth<br>to load|
|2|+|Output positive|Output 1 positive|
|3|+|Output positive|Output 1 positive|
|4|–|Output negative|Output 1 negative|
|5|–|Output negative|Output 1 negative|
|6|+|Output positive|Output 2 positive|
|7|+|Output positive|Output 2 positive|
|8|–|Output negative|Output 2 negative|
|9|–|Output negative|Output 2 negative|
|10|AUX|Option|Option|
|11||Functional earth<br>to load|Functional earth<br>to load|
## **Installation Instructions**
The converters of the W Series are components, intended exclusively for inclusion within other equipment by professional installers. Installation must strictly follow the national safety regulations in compliance with the enclosure, mounting, creepage, clearance, casualty, markings and segregation requirements of the end-use application.
**DIN-rail mounting** is possible with the built-in snap-fit device on a DIN-rail. This fulfills the mechanical transport re quirements as per ETSI 300019-1-2, class 2 (vertical).
To fulfill the requirements of IEC 721-3-2, class 2.1 (vertical), 2 additional fixing brackets HZZ00624-G (see _Accessories)_ must be fitted on the bottom side of the DIN-rail. For heavy duty railway applications, we recommend installing all 4 fixing brackets HZZ00624-G.
**Chassis or wall mounting** is possible using the universal chassis-mounting brackets HZZ00618-G (see _Accessories_ ) _._ Such installa tion complies with IEC 721-3-2, class 2.2 (vertical and horizontal).
**Caution** : Install the converters vertically, and make sure that there is sufficient airflow available for convection cooling. The minimum space to the next device should be: top/bottom: 30 mm, left/right: 20 mm.
The converters of the W Series are class I equipment: Input terminal 1[(] ) and the output terminals 1 and 11 ( ) are reliably connected to the case. For safety reasons it is essential to connect the input terminal 1[(] ) with protective earth. Output terminals 1 and 11 can be used to connect the output voltage(s) or the load to functional earth.
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125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## W Series
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_Fig. 16a Snap-fit mounting to DIN-Rail._
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10073<br>**----- End of picture text -----**<br>
_Fig. 16b Dismounting from DIN-rail. Use proper tool (min. 3 mm screwdriver) and adequate force._
**==> picture [149 x 142] intentionally omitted <==**
**----- Start of picture text -----**<br>
10074<br>1<br>3<br>2<br>**----- End of picture text -----**<br>
_Fig. 17_
_Cage clamp terminals. Use 0.5 to 2.5 mm[2 ] (AWG 20 to 12) solid or stranded wires depending on local requirements._
~~~~~ The phase input (L or Vi+) is internally fused; see _Input Fuse_ . This fuse is de signed to break an overcurrent in case of a malfunction of the converter and is not customer-accessible.
> External fuses in the wiring to one or both input lines (L ~~~~~ and/or N ~~~~~ ) may be necessary to ensure compliance with local requirements. A built-in second fuse in the neutral path is available as option F.
~~~~~ A second fuse in the wiring to the neutral terminal N or option F is needed if:
- Local requirements demand an individual fuse in each source line
- Neutral and earth impedance is high or undefined
- ~~~ ~~~
- • Phase and neutral of the mains are not defined or cannot be assigned to the corresponding terminals (L to phase and N to neutral). Models with Option F: Caution! Double-pole/neutral fusing.
If the converters operate at source voltages above 250 VDC, an external fuse or a circuit breaker at system level should be installed.
## **Caution:**
- Installation must strictly follow the national safety regulations.
- Do not open this apparatus!
## **Protection Degree and Cleaning Liquids**
The protection degree of the converters is IP 20. Protective covers over input and output terminals are available on request; see _Accessories_ .
Any penetration of liquid or foreign solid objects is to be prevented, since the converters are not hermetically sealed.
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125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## W Series
## **Standards and Approvals**
The converters of the LW Series with feature E were safety-approved to IEC/EN 62368-1 3rd edition and UL/CSA 60950-1 2nd edition (models without E: IEC/EN 62368-1 3rd edition), IEC 61010-1:C11:2002 (models without E: IEC 61010-1), and EN 50178:1997 (with and without E).
The converters are UL508-listed components.
The EW models are safety-approved to IEC/EN 62368-1 3rd edition and UL/CSA 60950-1 2nd edition
The converters have been designed in accordance with said standards for:
- Class I equipment
- Power supply for building-in, vertical mounting on 35 mm DIN-rail or on a wall
- Overvoltage category II (III for 110 VAC supply)
- Basic insulation between input and case, based on 250 VAC
- Double or reinforced insulation between input and output, based on 250 VAC and 350 VDC.
- Functional insulation between outputs and case.
- Functional insulation between outputs.
- Pollution degree 2 environment.
The converters are subject to manufacturing surveillance in accordance with the above mentioned standards and with ISO9001:2015.
## **Operation at Frequencies Greater 60 Hz**
The LW Series converters have been tested for operation up to 440 Hz. However, the Y and X caps are not approved to such frequency. The leakage currents are higher than at 60 Hz, whereas the output ripple voltage is lower.
## **Leakage Currents with AC Supply**
Leakage currents flow due to internal leakage capacitance and RFI suppression Y-capacitors. The current values are proportional to the mains voltage and nearly proportional to the mains frequency. They are specified at maximum operating input voltage where phase, neutral, and protective earth are correctly connected as required for class I equipment.
Leakage current may exceed 5 mA, if _f_ i > 63 Hz.
## **Railway Applications**
The W Series converters have been designed observing the railway standards EN 50155 and EN 50121. All boards are coated with a protective lacquer.
The EW Series is particularly suitable for connection to 110 V railway batteries.
## **Isolation**
The electric strength test is performed in the factory as routine test in accordance with EN 62911 and IEC/EN 62368-1 3rd edition and should not be repeated in the field. The Company will not honor warranty claims resulting from incorrectly executed electric strength field tests.
## _Table 14: Isolation_
|_Table 14: Isolation_||||||
|---|---|---|---|---|---|
|**Characteristics**||**Input to Case**<br>**and Output(s)**|**Output(s) to Case**|**Output 1 to Output 2**<br>**and AUX**|**Unit**|
|Electric strength test|Factory test ≥1 s|2.81|1.4|0.5|kVDC|
||AC test voltage equivalent<br>to factory test|2.0|1.0|0.35|kVAC|
|Insulation resistance||>3002|>3002|>100|MΩ|
- 1 In accordance with IEC/EN 62368-1 3rd edition, subassemblies are pretested with 4.2 kVDC.
2 Tested at 500 VDC.
## **LED Indicator**
A green LED is activated, when the output voltage _V_ o is within the normal operating tolerance band.
**Note:** This LED is also activated, when the converter is not powered by the input, but a loaded battery is connected to the output.
**==> picture [70 x 37] intentionally omitted <==**
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Page 22 of 29
## W Series
## 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Safety of Operator-Accessible Output Circuits**
If the output circuit of a converter is operator accessible, it shall be a ES1 circuit according to 62368-1 3rd edition related safety standards.
The converters have ES1 output circuits up to an output voltage of 57.5 V. However, if the isolated outputs are connected to another voltage source or connected in series with a total of >57.5 V the outputs are hazardous.
It is the sole responsibility of the installer to ensure the compliance with the relevant and applicable safety regulations.
## **Description of Options**
**E** designates LW models with improved EMC per formance. Refer to the EC Declaration of Conformity. Feature E is standard for new designs.
**Single options D1, D2, D5, R** are available (as single choice options) on the AUX terminal (10), referenced to Vo–.
**Option M1** and **M2** designate a combination of several options accessible via a D-SUB connector. Option M1 includes the function SD (shutdown).
**Note:** In double-output models, the options D1, D5, R, and SD concern only output 2.
## **Single Options Using the AUX Pin**
The connection is shown in the figure below. For the description refer to _Adjustment of V_ o _or V_ o2 _(_ next section).
**==> picture [223 x 128] intentionally omitted <==**
**----- Start of picture text -----**<br>
Adjustment with Rext Adjustment with Vext<br>11 11<br>AUX 10 AUX 10 +<br>Vo2– 9 Vo2– 9 Vext<br>or Vo– 8 or Vo– 8<br>Vo2+ 7 7<br>or Vo+ 6 6<br>5 5<br>4 4<br>3 3<br>2 2<br>1 1<br>ext1 06142b<br>R<br>ext2<br>R<br>**----- End of picture text -----**<br>
_Fig. 18_
_Connection of adjust resistors or an external voltage source to adjust the output voltage V_ o _or V_ o2 _(option M1 or M2 not fitted)_
## **Multiple Options M1 or M2 via D-SUB Connector**
The option board is suitable for applications, where several options are needed. Option M1 is standard for battery charger models, option M2 is suitable for applications without battery or for simple applications with battery.
_Table 15: Pin allocation of the 9 pin D-SUB connector_
|**Pin**|**Designation**|**Description**|
|---|---|---|
|1|GND11|System ground / common signal return|
|2|R|R input 3|
|3|VCC2|Positive supply voltage (≈output 2)|
|4|D1|Output voltage monitor_V_o low D1<br>3|
|5|D5|Output 2 voltage monitor_V_o low D5<br>3|
|6|SD|Shutdown3|
|7|D-adj|Adjustment of threshold values of D1 or D5|
|8|D2|Input voltage monitor_V_i low|
|9|Sys-OK|System okay (all outputs are okay)|
1 Do not connect GND1 (pin 1) with the neg. output (–)
2 Do not connect VCC (pin 3) with the positive output (+)
- 3 In double-output models, R, D1, D5, SD concern output 2 only.
**==> picture [70 x 37] intentionally omitted <==**
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## W Series
## 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
_Table 16a: Option board M1_
|**Function**|**Description**|
|---|---|
|R|Output voltage adjust 1|
|D1|Output voltage monitor_V_o low D1<br>1|
|D2|Input voltage monitor_V_i low|
|D5|Output 2 voltage monitor 1<br>(battery deep discharged):_V_o low D5|
|Sys-OK|System okay|
|SD|Shutdown1|
|D-adj|Adjustment of trigger values D1 and D5|
_Table 16b: Option board M2_
|**Function**|**Description**|
|---|---|
|R|Output voltage adjust 1|
|D2|Input voltage monitor_V_i low|
|D5|Output voltage monitor 1<br>(battery deep discharged):_V_o low D5|
|D-adj|Adjustment of trigger values D1 and D5|
> 1 In double-output models, only output 2 is concerned.
> 1 In double-output models, only output 2 is concerned.
## **D2: Input Voltage Monitor (Power Fail)**
D2 monitors the input voltage _V_ i. When _V_ i drops below 65±3 VAC or 92 VDC, the D2 signal output is high impedance (opencollector, max. 50 V).
When _V_ i is greater then said level, the signal output D2 is conducting: _V_ D2 < 1.5 V, _I_ D2 max < 50 mA. D1: Output Voltage Monitor.
**==> picture [489 x 228] intentionally omitted <==**
**----- Start of picture text -----**<br>
D-SUB (female) D-SUB (female)<br>5 4 3 2 1 5 4 3 2 1<br>9 8 7 6 9 8 7 6<br>11 11<br>AUX 10 10<br>9 9 +<br>8 8<br>Vo2+ 7 + Vo2+ 7 +<br>or Vo+ 6 or Vo+ 6<br>5 5<br>4 4<br>3 3<br>2 2<br>1 1<br>06141b 06140b<br>D2 VCC<br>Power-Fail<br>Power-Fail D2<br>**----- End of picture text -----**<br>
_Fig. 19 Option D2: Examples of relay control to monitor a power failure._
## **D1: Output Voltage Monitor**
D1 is intended for monitoring the bus voltage of a battery-buffered system. It indicates that the system is powered from the battery and can for instance be used as a warning signal or to switch off a part of the load. When the output voltage _V_ o (or _V_ o2) is greater than _V_ o low D1 specified in table 17, the D1 signal output is conducting: _V_ D1 < 1.5 V, _I_ D1 max < 50 mA.
When _V_ o is lower, the D1 signal output is high impedance (open-collector, max. 58.6 V). In double-output models, D1 monitors only output 2 ( _V_ o2).
In applications without battery-buffering the D1 signal may not be suitable, since smaller dynamic load changes may cause D1 to trigger. For such applications, D5 with a trigger level of approx. 85% of _V_ o nom should be chosen (e.g., for a bus voltage of 24.7 V: trigger level at 21 V).
**==> picture [70 x 37] intentionally omitted <==**
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W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **D5: System Voltage Monitor (Battery Low)**
D5 monitors the output voltage _V_ o ( _V_ o2 in double-output models) or the lowest admissible voltage of a connected battery (battery deep discharge). The definition of D5 is similar to D1, but the trigger level is lower. When specified in table 17, the D2 signal output is conducting: _V_ o (or _V_ o2) is greater than _V_ o low D5
_V_ D5 < 1.5 V, _I_ D5 max < 50 mA.
When _V_ o is lower, the D5 signal output is high impedance (open-collector, max. 58.6 V). In double-output models, D5 monitors only output 2 ( _V_ o2).
In systems without battery support, D5 signals that _V_ o (or _V_ o2 ) is going to drop below a safe value.
In battery-buffered systems, D5 indicates that the battery has reached its deepest discharge level prior to getting damaged.
The D5 signal can be used for instance to disable loads, save data, or to start a controlled switch-off of running processes.
_Table 17: Options D1 and D5: Trigger and switch-on levels_
|_Table 17: Options D1_|_and D5: Trigger and_|_switch-on levels_|_switch-on levels_|||
|---|---|---|---|---|---|
|**Model**|**Battery****_V_Bat**<br>**[V]**|**_V_o low D1**||**_V_o low D5**||
|||**trigger [V]**|**switch on [V]**|**trigger [V]**|**switch on [V]**|
|LWR/LWN1140|12|11.5|12.1|10.5|12.1|
|LWR/LWN1240|24|23|24.2|21|24.2|
|LWR/LWN1840|36|34.4|36.3|31.5|36.3|
|LWR/LWN1740|48|46|48.4|42|48.4|
## **Adjustment of Threshold Levels (D1/D5)**
Pin 7 of the D-SUB connector allows for adjustment of the threshold levels of D1 and D5. Both levels are influenced by the voltage divider _R_ x / _R_ y. Resistor _R_ x to pin 3 (VCC) lowers the levels, whereas _R_ y to pin 1 (GND1) increases them (see fig. 20).
**==> picture [101 x 130] intentionally omitted <==**
**----- Start of picture text -----**<br>
D-SUB (female)<br>5 4 3 2 1<br>9 8 7 6<br>VCC GND1<br>Rx Ry<br>Change threshold<br>06148b<br>D-adj<br>**----- End of picture text -----**<br>
_Fig. 20_
_Wiring to adjust both threshold levels of option D1 or D5_
## **SD: Shutdown**
Reduces the output power to approx. 1 W, but the converter is not fully disabled. In a no-load condition, fig. 21. In double-output models, only output 2 is influenced. _V_ o drops below 6.2 V; see
**==> picture [193 x 105] intentionally omitted <==**
**----- Start of picture text -----**<br>
05175b<br>V<br>5<br>3<br>1<br>0 0.2 0.4 0.6 0.8 1 1.2 A<br>Output voltage<br>Output current<br>**----- End of picture text -----**<br>
_Table 18: Shutdown conditions_
|**Voltage****_V_SD on**<br>**shutdown pin**|**Result**|
|---|---|
|<0.7 V|Converter disabled (_P_oapprox. 1 W)|
|≥2.0 V or open|Converter enabled|
_Fig. 21_
_Output voltage versus output current, while the shutdown is activated (V_ i _= V_ i nom _)._
**==> picture [70 x 37] intentionally omitted <==**
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125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## W Series
## **Sys-OK: Status**
This function allows in a battery charger application for checking, whether the output is correctly following the external control signal at the R-input (coming for instance from the temperature sensor). The logic is shown in table 19.
_Table 19: System OK (M1 with external battery sensor)_
|**System Status**|**Input**|**_V_control**<br>**sensor signal**|**_V_Bat**<br>**theoretical**|**_V_Bat**<br>**measured**|**Sys-OK**<br>**Output**|
|---|---|---|---|---|---|
|System OK|OK|2.7 V|27 V|27 V|Low ohmic|
|Battery overcharged / temp. sensor defect / control voltage to high|OK|2.7 V|27 V|28 V|High ohmic|
|Overload, converter cannot follow the control signal|OK|2.7 V|27 V|24 V|High ohmic|
|Output does not follow control signal, since battery would be overcharged|OK|3.0 V|30 V|27 V|High ohmic|
|System OK|OK|2.5 V|25 V|25 V|Low ohmic|
## **R: Adjustment of** _**V**_ **o or** _**V**_ **o2**
The R input allows external adjustment of the output voltage in the range of 50% to 110% adjustment of output 2 (connected to the terminals 6, 7, 8 and 9). This enables asymmetric output voltage configuration. _V_ o nom. Double-output models allow only
Adjustment can be achieved via a resistor or an external voltage source (in the range of 1.25 – 2.75 V).
**Note** : If the R input is not connected: _V_ o or _V_ o2 ≈ _V_ o nom.
a) Adjustment by an external resistor:
Resistor _R_ ext1, connected between R (pin 2) and GND1 (pin 1) of the D-SUB connector or according to fig. 20.
**==> picture [429 x 40] intentionally omitted <==**
**==> picture [68 x 9] intentionally omitted <==**
**==> picture [346 x 32] intentionally omitted <==**
b) Adjustment by an external control voltage connector or according to fig. 20. _V_ ext (1.25 – 2.75 V), connected between R (pin 2) and GND (pin 1) of the D-SUB
**==> picture [188 x 28] intentionally omitted <==**
**Caution:** To prevent damage, _V_ ext should not exceed 3 V, nor be negative.
**Note:** If longer wires are used to connect the R input at the D-SUB connector, the wiring to pin 1 (GND1) should be done as star point connection. If wired differently, the output voltage setting may be adversely affected.
In battery charging systems, an external battery temperature sensor (see _Accessories_ ) can be connected to optimize _V_ o. However, adjustment using the R input (pin 2 of D-SUB) is possible as well. The above shown formulas are valid, but _V_ o nom stands for the voltage with open R input ( _= V_ o safe).
## **F: Built-in Second Fuse**
A built-in second fuse in the neutral line provides safe phase-to-phase connection at low mains voltages (e.g., USA 120 V/208 V / 60 Hz systems).
The built-in second fuse also enables safe connection to the mains, where phase and neutral are not defined or cannot be identified, as e.g., in the case of plug and socket connection to the mains via German Schuko-plugs; see also _Safety and Installation Instructions_ .
Option F limits the DC input voltage to ≤ 250 V.
## **Q: Reverse Polarity Protection**
EW models have no bridge rectifier at the input. To provide reverse polarity protection, an additional diode can be fitted. However this lowers the efficiency by approximately 1%.
**==> picture [70 x 37] intentionally omitted <==**
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## W Series
## 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **K2: System Connectors**
For installation in systems using pre-assembled harnesses the converters are available with system connectors. They are UL-listed, approved for currents up to 15 A at –40 to 105 °C.
The mating system connectors with screw terminals and retainers are delivered together with every converter with option K2. Use max. 2.5 mm[2] (AWG 12) solid or stranded wires, or max. 1.5 mm[2] (AWG 14) stranded wires with crimp termination, stripped length 6 mm. Tightening torque of input/output terminals: max. 0.79 Nm (7 lbs.in.).
_Fig. 22 System connectors Option K2_
## **G: RoHS**
RoHS compliant for all six substances.
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125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## W Series
## **Accessories**
## **Shock-Resistant Wall Mounting**
Set of wall mounting brackets HZZ00618-G (UMB-W)
**Content:** 2 clamps, 4 countersunk screws M4, washers, and spring washers
## **DIN-Rail Fixing Brackets HZZ00624-G**
For DIN-Rail vibration-proof fastening, use a set of brackets HZZ00624-G (DMB-EWG). For heavy-duty application 2 sets ( = 4 brackets) are pre ferable.
**==> picture [220 x 133] intentionally omitted <==**
**----- Start of picture text -----**<br>
10068<br>{OUPLE ys<br>mee<br>I:<br>|b<br>a LGD _ Lec -- q =<br>8<br>18<br>12055<br>4.2<br>49<br>33 ±0.5<br>3<br>**----- End of picture text -----**<br>
_Fig. 23 Wall mounting with mounting brackets HZZ00618-G_
_Fig. 24 DIN-rail fixing bracket HZZ00624-G (DMB-EWG)_
## **Protective Covers over Terminals**
Protective covers are available to avoid touching of the terminals. HZZ01219-G and HZZ01219A-G (protective cover with cut-outs) contains in a bag a plastic cover with length A = 26.5 mm for the primary terminals and a second one with length A = 59 mm for the secondary terminals; see figures below.
**Content:** 2 covers to protect the input and output terminals.
_Fig. 25a Protective cover HZZ01219-G_
_Fig. 25b Protective cover with cut-outs HZZ01219A-G_
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W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
## **Battery Temperature Sensor**
To charge lead-acid batteries according to their temperature different types of temperature sensors are available, (see _Battery Charging and Temperature Sensor_ in this data sheet and the _Temperature Sensor data sheet_ at **belfuse.com/power-solutions.**
**==> picture [234 x 70] intentionally omitted <==**
**----- Start of picture text -----**<br>
26 (1.02") European<br>Projection<br>09125a<br>L 56 (2.2")<br>o t adhesive tape<br>L = 2 m (standard length)<br> other cable lengths on request<br>9.8 (0.04")<br>**----- End of picture text -----**<br>
**==> picture [81 x 20] intentionally omitted <==**
**----- Start of picture text -----**<br>
Fig. 26<br>Temperature sensor<br>**----- End of picture text -----**<br>
**==> picture [213 x 143] intentionally omitted <==**
**----- Start of picture text -----**<br>
05191a + –<br>D-SUB<br>2<br>R<br>3<br>VCC<br>1<br>GND<br>Fuse<br>Vo+ + –<br>Temperature<br>Vo– Battery sensor<br>Load<br>white<br>brown<br>green<br>Converter<br>**----- End of picture text -----**<br>
_Fig. 27 Connection of temperature sensor_
_Table 20: Sensors for converters with standard R-input_
|**Battery**<br>**voltage**<br>**nom. [V]**<br>~~ee~~|**Sensor type**<br>~~ee~~|**Cell**<br>**volt-**<br>**age**<br>**[V]**<br>~~ee~~|**Cell temp.**<br>**coefficient**<br>**[mV/K]**<br>~~ee~~|**Cable**<br>**length**<br>**[m]**<br>~~ee~~|
|---|---|---|---|---|
|12<br>~~ee~~<br>~~ee~~|S-KSMH12-2.27-30-2<br>~~ee~~<br>~~ee~~|2.27<br>~~ee~~<br>~~ee~~|–3.0<br>~~ee~~<br>~~ee~~|2<br>~~ee~~<br>~~ee~~|
|12<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH12-2.27-35-2<br>~~ee ~~<br>~~ee~~<br>~~ee~~|2.27<br> ~~ee~~<br>~~ee~~<br>~~ee~~|–3.5<br>~~ee ~~<br>~~ee~~<br>~~ee~~|2<br> ~~ee~~<br>~~ee~~<br>~~ee~~|
|24<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH24-2.27-30-2<br>~~ee ~~<br>~~ee~~<br>~~ee~~|2.27<br> ~~ee~~<br>~~ee~~<br>~~ee~~|–3.0<br>~~ee ~~<br>~~ee~~<br>~~ee~~|2<br> ~~ee~~<br>~~ee~~|
|24<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH24-2.27-35-2<br>~~ee ~~<br>~~ee~~<br>~~es~~|2.27<br> ~~ee~~<br>~~ee~~<br>~~es~~|–3.5<br>~~ee ~~<br>~~ee~~<br>~~ee~~|2<br> ~~ee~~|
|24<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH24-2.31-35-0<br>~~ee~~<br>~~es~~<br>~~ee~~|2.31<br>~~ee~~<br>~~es~~<br>~~ee~~|–3.5<br>~~ee~~<br>~~ee~~<br>~~ee~~|4.5<br>~~ee~~|
|24<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH24-2.31-35-2<br>~~es ~~<br>~~ee~~<br>~~ee~~|2.31<br> ~~es ~~<br>~~ee~~<br>~~ee~~|–3.5<br> ~~ee~~<br>~~ee~~<br>~~ee~~|2<br>~~ee~~<br>~~ee~~|
|24<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH24-2.35-35-2<br>~~ee ~~<br>~~ee~~<br>~~ee~~|2.35<br> ~~ee~~<br>~~ee~~<br>~~ee~~|–3.5<br>~~ee ~~<br>~~ee~~<br>~~ee~~|2<br> ~~ee~~<br>~~ee~~<br>~~ee~~|
|48<br>~~ee~~<br>~~ee~~<br>~~ee~~|S-KSMH48-2.27-30-2<br>~~ee ~~<br>~~ee~~<br>~~ee~~|2.27<br> ~~ee~~<br>~~ee~~<br>~~ee~~|–3.0<br>~~ee ~~<br>~~ee~~<br>~~ee~~|2<br> ~~ee~~<br>~~ee~~<br>~~ee~~|
|48<br>~~ee~~<br>~~ee~~|S-KSMH48-2-27-35-2<br>~~ee ~~<br>~~ee~~|2.27<br> ~~ee~~<br>~~ee~~|–3.5<br>~~ee ~~<br>~~ee~~|2<br> ~~ee~~<br>~~ee~~|
**For additional accessory product information, see the accessory data sheets listed with each product series or individual model at our website.**
**NUCLEAR AND MEDICAL APPLICATIONS** - These products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems.
**TECHNICAL REVISIONS** - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice.
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Updated at April 28, 2026
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