PMS-24V1K2W1BTD

**TECHNICAL DATASHEET** 

## **PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

## **PMS** 

## **Highlights & Features** 

- Universal AC input voltage 

- Up to 1,200 Watt in 8.03" x 5" x 1.59" package 

- Peak power supported 

- Full power up to 50°C ambient 

- Option for constant current 

- Up to 500 KHrs MTBF 

- 5 V / 2 A standby output 

- Active current sharing 

- Conformal coating 

- Class B Conducted and Radiated EMI 

- Remote On/Off and Power Good Signal 

- PMBus Ver 1.3 supported 

- Intelligent fan speed control 

- Optional USB/RS232/RS485 adapter for communication 

- • Compliance to SEMI F47 @ 200Vac 

## **Safety Standards** 

## ef 

CB Certified for worldwide use 

**Model Number:** PMS- `☐` V1K2W1BTD **Unit Weight:** 1.5 kg (3.3 lb) **Dimensions (L x W x H):** 204 x 127.0 x 40.5 mm (8.03 x 5 x 1.59 inch) 

## **General Description** 

PMS Series 1,200 W power supply offers the nominal output voltage of 24 V/48 V across a wide operating temperature range from -20°C to +70°C and obtains shock and vibration certification IEC 60068-2. The product is designed with 1U low profile and comes with a universal AC input voltage ranging from 85 Vac to 264 Vac. The PMS series is made for installation in limited spaces. Its built-in active PFC circuit provides high power factor values and conforms to harmonic current emission standards IEC/EN 61000-3-2, Class A. 

## **Model Information** 

PMS Panel Mount Power Supply 

|**ModelNumber**|**Input Voltage Range**|**Rated OutputVoltage**|**Rated OutputCurrent**|
|---|---|---|---|
|PMS-24V1K2W1BTD|85 Vac ~ 264 Vac|24 Vdc|50.00 A|
|PMS-48V1K2W1BTD||48 Vdc|25.00 A|



## **Model Numbering** 

|**PM**|**S –**|□**V**|**1K2W**|**1**|**B**|**T**|**D**|
|---|---|---|---|---|---|---|---|
|Panel|Product Type|Output Voltage|Output Power|Single|Family Code: B|T –Terminal block,|D – Remote On/Off|
|Mount|S – SMART|24 – 24 V||Phase||without protective|(default on) &|
||Series|48 – 48 V||||mesh cover|Constant Current|
||||||||Mode Protection|



All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

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**TECHNICAL DATASHEET** 

**PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

## **Specifications** 

**Model Number** PMS-24V1K2W1BTD PMS-48V1K2W1BTD 

Input Ratings / Characteristics 

**==> picture [392 x 156] intentionally omitted <==**

**----- Start of picture text -----**<br>
||||
|---|---|---|
|Nominal Input Voltage|100-240 Vac|
|Input Voltage Range|85-264 Vac|
|Nominal Input Frequency|50-60 Hz|
|Input Frequency Range|47-63 Hz|
|Input Current (max)|15 A|
|Input Surge Voltage (max)|300 Vac for 100 ms|
|Efficiency at 100% Load @ 230Vac|93% typ.|94% typ.|
|No Load Power Consumption|6 W typ. @ remote off status|
|Max Inrush Current (Cold Start)|40 A @ 264 Vac, cold/hot start|
|Power Factor at 100% Load|0.95 @ 115 V/50 Hz, 230 V/50 Hz|
|Leakage Current|< 0.3 mA @ 240Vac|

**----- End of picture text -----**<br>


Output Ratings / Characteristics*[1] 

**==> picture [526 x 345] intentionally omitted <==**

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|||||
|---|---|---|---|
|Nominal Output Voltage|24 Vdc|48 Vdc|
|Total Regulation|± 3%|± 3%|
|Output Voltage Adjustment Range|24-28 Vdc|48-56 Vdc|
|Output Current|0-50.0 A|0-25.0 A|
|56 A|28 A|
|Constant Current (CV mode)|
|(voltage range 19-26.4 V with 1,200 W max)|(voltage range 38-52.8 V with 1,200 W max)|
|Output Power|1,200 W Max.|
|24 V: 1,500 W peak for 3 sec, @ 180~264 Vac|
|Peak Power (max)|
|48 V: 1,500 W peak for 3 sec, @ 180~264 Vac|
|Line Regulation|±|0.5%|
|Load Regulation|±|1%|
|PARD|[*2]|(20MHz)|< 1% Vrated pk-pk @ rated load|
|Rise Time|< 50 ms|
|Start-up Time|2,000 ms with AC turn on|
|16 ms @ 1000 W load, with nominal input range|
|Hold-up Time|
|20 ms @ 800 W load, with nominal input range|
|Dynamic Response|± 5% @ 115 & 230 Vac input with 0-50% or 50-100% load change|
|(Overshoot & Undershoot O/P Voltage)|± 10% @ 115 & 230 Vac input with 5-100% load change|
|Start-up with Capacitive Loads|6,000 uF|
|Nominal Standby Voltage Output|[*3]|5 V|
|Nominal Standby Current Output|2 A|
|Total Regulation of Standby Output|± 3%|
|Ripple & Noise of Standby Output|100 mV max|
|Up to 500 mV compensation for voltage drop across external wire connections to load.|
|Remote Sense|
|Short and reverse connection protected.|

**----- End of picture text -----**<br>


- *1 For power de-rating from > 50°C to 70°C, see power de-rating on page 8. 

*2 PARD is measured with an AC coupling mode, and in parallel to end terminal with 0.1µF ceramic capacitor & 47µF electrolytic capacitor. PSU need to burn in > 5 minutes when AMB ≤ 0°C 

*3 5V standby output is always on when AC is present 

All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

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**TECHNICAL DATASHEET** 

**PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

|**Model Number**|PMS-24V1K2W1BTD|PMS-48V1K2W1BTD|
|---|---|---|
|Mechanical|||
|Case Chassis|SGCC||
|Case Cover|SGCC||
|Dimensions(L x W x H)|204 x 127 x 40.5 mm(8.03 x 5 x 1.59 inch)||
|Unit Weight|1.5 kg (3.3 lb)||
|CoolingSystem|Force Cooling||
|Terminal|M3.5 x 3 Pins, CN1 / AC Input<br>M5 x 2 Pins, CN101, 102 / DC Output||



## Mechanical 

## Environment 

|Environment|||
|---|---|---|
|Surrounding Air<br>Temperature|Operating|-20°C to +70°C|
||Storage|-40°C to +85°C|
|Power De-rating|Temperature|> 50°C de-ratepower by2.5% / °C, Note: seepower de-ratingcurves following page|
||Input|< 90 Vac, de-ratepower by3.33% / Vac from 1,200 W|
|OperatingHumidity||5-95% RH(Non-Condensing)|
|OperatingAltitude||0 to 5,000 Meters(0 to 16,400 ft)|
|Shock Test|Non-Operating|IEC 60068-2-27, Half Sine Wave: 50 G for duration of 11 ms; 3 timesper direction|
|Vibration|Operating|IEC 60068-2-6, Sine Wave: 5 Hz to 500 Hz @ 2G; 20 min per cycle, 60min for X, Y, Z<br>direction|
|Pollution Degree||2|
|Acoustic Noise|Tolerance: ±2dB|< 45dB @ 80% load @ 25°C|



*4 Acoustic Noise test set up according to ISO-7779 

**Fig 1. Acoustic Noise Testing Set Up** 

All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

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**TECHNICAL DATASHEET** 

**PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

||**Model Number**||**PMS-24V1K2W1BTD**<br>**PMS-48V1K2W1BTD**|
|---|---|---|---|
|Protections||||
||Overvoltage||Main output 145% max of rated normal voltage, Latch Mode<br>Standby 125% max of rated voltage, Latch Mode|
||Overload / Overcurrent||Main output 130% max of rated load current, Hiccup Mode, Non-Latching (Auto-Recovery)<br>Standby 3.2A max with Hiccup Mode (Auto-Recovery)|
||Over Temperature||Latch Mode for Main output|
||Short Circuit||Hiccup Mode to Main output / Standby<br>(Auto-Recovery when the fault is removed)|
||Protection Against Shock||Class I with PE*4connection|
|*4 PE: Protection Earth||||
|Reliability Data||||
||MTBF|500K hrs based on Telcordia SR-332|500K hrs based on Telcordia SR-332(@ 115 Vac, 100% Load, 35°C)|
||Expected CapLife Time|26,280 hrs,|26,280 hrs,(@115 Vac, 100% load @ 25°C)|



Safety Standards / Directives 

|Safety Standards / Directives|Safety Standards / Directives||
|---|---|---|
|SafetyEntryLow Voltage||SELV|
|Electrical Safety|TUV Bauart<br>UL/cUL<br>CB scheme<br>CQC|EN 62368-1<br>UL 62368-1 and CAN/CSA C22.2 No. 62368-1<br>IEC 62368-1<br>GB 4943.1|
|CE||In conformance with EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU|
|UKCA||In conformance with Electromagnetic Compatibility Regulations 2016 and Electrical<br>Equipment (Safety) Regulations 2016|
|Galvanic Isolation|Input to Output|4.0 KVac|
||Input to Ground|1.5 KVac|
||Output to Ground|1.5 KVac|



All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

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**TECHNICAL DATASHEET** 

**PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

|EMC|EMC||
|---|---|---|
|Emissions(CE & RE)||EN 55032,KS C 9832, ComplytoFCC Title 47: Class B|
|Electrostatic<br>Discharge|IEC 61000-4-2|Level 4 Criteria A1)<br>Air Discharge: 15 kV<br>Contact Discharge: 8 kV|
|Radiated Field|IEC 61000-4-3|Criteria A1)<br>80MHz-2700MHz, 10V/m AM modulation<br>Level 2 Criteria A1)<br>385MHz-5785MHz, 28V/m Pulse mode and other modulation|
|Electrical Fast<br>Transient / Burst|IEC 61000-4-4|Level 3 Criteria A1): 2kV|
|Surge|IEC 61000-4-5|Level 3 Criteria A1)<br>Common Mode4): 2kV<br>Differential Mode5): 1kV|
|Conducted|IEC 61000-4-6|Level 2 Criteria A1)<br>150kHz-80MHz, 3Vrms, 6Vrms at ISM bands and Amateur radio bands|
|Power Frequency<br>Magnetic Fields|IEC 61000-4-8|Criteria A1)<br>Magnetic field strength 30A/m|
|Voltage Dips and<br>Interruptions|IEC 61000-4-11|30% 10ms Criteria A1)<br>60% 100ms Criteria B2)<br>100% 5000ms Criteria B2)|
|Harmonic Current<br>Emission|IEC/EN 61000-3-2|Meet Class A limit|
|Voltage Fluctuation and Flicker||EN 61000-3-3|
|Voltage Sag Immunity<br>SEMI F47 – 0706||24V:<br>80% of 200 Vac, 160 Vac, 1000 ms, Criteria A1)<br>70% of 200 Vac, 140 Vac, 500 ms, Criteria A1)<br>50% of 200 Vac, 100 Vac, 200 ms, Criteria A1)<br>48V:<br>80% of 200 Vac, 160 Vac, 1000 ms, Criteria A1)<br>70% of 200 Vac, 140 Vac, 500 ms, Criteria A1)<br>50% of 200 Vac, 100 Vac, 200 ms, Criteria A1)|



- 1) Criteria A: Normal performance within the specification limits 

- 2) Criteria B: Output out of regulation, or shuts down during test. Automatically restored to normal operation after test. 

- 3) Criteria C: Output out of regulation, shuts down during test (Need to recycle AC power cord to normal operation after test) 

- 4) Asymmetrical: Common mode (Line to earth) 

- 5) Symmetrical: Differential mode (Line to line) 

All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

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**TECHNICAL DATASHEET** 

## **PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

## **Block Diagram** 

## **Device Descriptions** 

- 1) Input terminal block connector 

- 2) Output terminal block connector 

- 3) Communication block connector 

All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

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**TECHNICAL DATASHEET** 

## **PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

## **Dimensions** 

**L x W x H:** 204 x 127.0 x 40.5 mm (8.03 x 5 x 1.59 inch) 

## **Notes:** 

1. Base plate mounting, M4 thread holes, maximum penetration 3.0 mm (0.12 inch) from outside face of chassis, torque 9~10 kgf.cm (7.8~8.7 inch.Ibs). 

2. Side mounting, M4 thread holes, maximum penetration 3.0 mm (0.12 inch) from outside face of chassis, torque 9~10 kgf.cm (7.8~8.7 inch.Ibs). 

3. CN101/CN102, M5 screw in two positions, maximum torque 21.0 kgf.cm (18.2 inch.Ibs). 

4. CN1, M3.5 screw in two positions, torque 6~7 kgf.cm (5.2~6.1 inch.Ibs). 

5. VR:  clockwise is to increase the output voltage, anti-clockwise is to reduce the output voltage. 

6. Built-in cooling fan. Must prevent dust suction into power supply, or use natural convection power supply if any concerns. 

7. All dimensions are in millimeters and inches 

All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

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**TECHNICAL DATASHEET** 

## **PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

## **Connector Definition and Pin Assignment** 

|**Connector Definition and Pin Assignment**|**Connector Definition and Pin Assignment**|
|---|---|
|**Input Connector CN1(ANYTEK: YK50A)**<br>~~[~~||
|Pin 1<br>~~a~~|Earth<br>~~a~~|
|Pin 2<br>~~a~~|Line<br>~~a~~|
|Pin 3<br>~~a~~|Neutral<br>~~a~~|
|**Output Connector**<br>~~PO~~<br>~~——__~~||
|CN101<br>~~——__~~|DC RTN<br>~~[~~<br>~~——__~~|
||Vo<br>~~——__~~|
|**Control Connector CN603(Molex:87833-1051)**<br>**Mating With Molex:51110-1051  Terminal:0503948052**<br>~~——__~~||
|Pin 1<br>~~ee~~|5V bus for I2C <br>~~ee~~|
|Pin 2<br>~~a~~|DC RTN of 5V bus for I2C|
|Pin 3<br>~~a~~|Serial data signal(SDA)|
|Pin 4<br>~~a~~|Serial clock signal(SCL)|
|Pin 5<br>~~a~~|NC<br>|
|Pin 6<br>~~fo~~|NC<br>~~fo~~|
|Pin 7|Address bit 0(A0)|
|Pin 8<br>~~a~~|Address bit 1(A1)|
|Pin 9<br>~~a~~|Address bit 2(A2)<br>|
|Pin 10<br>|NC<br>|
|**Control Connector CN602(Molex:87833-7420)**<br>**Mating With Molex:51110-1451  Terminal:0503948052**<br>~~ee~~||
|Pin 1<br>~~a~~|Remote On_Off/Inhibit +|
|Pin 2<br>~~a~~|Remote On_Off/Inhibit -|
|Pin 3<br>~~a~~|Power Good-|
|Pin 4|Power Good+|
|Pin 5<br>~~a~~|NC|
|Pin 6<br>~~a~~|NC|
|Pin 7|5V StandbyOutput +|
|Pin 8<br>~~a~~|5V StandbyOutput +|
|Pin 9<br>~~a~~|DC RTN|
|Pin 10<br>~~a~~|DC RTN|
|Pin 11<br>~~a~~|Remote Sense +|
|Pin 12<br>~~a~~|Remote Sense -|
|Pin 13<br>~~a~~|Current Share|
|Pin 14<br>~~a~~|DC RTN|



All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

8 

**TECHNICAL DATASHEET** 

## **PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

## **Engineering Data** 

Output Load De-rating VS Surrounding Air Temperature 

**==> picture [297 x 442] intentionally omitted <==**

**----- Start of picture text -----**<br>
110<br>100<br>90<br>80<br>70<br>60<br>50<br>40<br>30<br>20<br>10<br>0<br>-20 -15 -10 0 10 20 30 40 50 60 70<br>Surrounding Air Temperature (°C)<br>Fig. 2  De-rating for Horizontal Mounting Orientation<br>> 50°C de-rate power by 2.5% / °C<br>Output Load De-rating VS Input Voltage<br>110<br>100<br>90<br>80<br>70<br>60<br>50<br>40<br>30<br>20<br>10<br>0<br>85 90 264<br>Input Voltage (Vac)<br>Percentage of Max Load (%)<br>Load (%)<br>**----- End of picture text -----**<br>


Output Load De-rating VS Input Voltage 

## **Note** 

1. Power supply components may degrade, or be damaged, when the power supply is continuously used outside the shaded region, refer to the graph shown in Fig. 2 & Fig. 3. 

2. The PSU will be bouncing and start up time will not exceed 5s when ambient temperature at ‐ 20°C. 

3. If the output capacity is not reduced when the surrounding air temperature >50°C, the device will run into Over Temperature Protection. When activated, power supply will latch off, until the surrounding air temperature is lowered or the load is reduced as far as necessary to keep the device in working condition, and require removal/reapplication of input AC voltage in order to restart. 

4. In order for the device to function in the manner intended, it is also necessary to keep a safety distance as recommended in the safety instructions while the device is in operation. 

5. Depending on the surrounding air temperature and output load delivered by the power supply, the device can be very hot! 

- No output power de-rating for the input voltage from 90 Vac to 264 Vac 

**Fig. 3 De-rating for AC Input Voltage** < 90 Vac de-rate power by 3.33% / V (100% load @ 90 Vac) 

All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

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**TECHNICAL DATASHEET** 

## **PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

## **Assembly & Installation** 

- Ⓐ   Base Mounting: Fig. 3 shows the mounting hole locations for power supply assembly onto a metal mounting surface. 

- Ⓑ   This surface belongs to customer’s end system or panel where the power supply is mounted. 

- Ⓒ   Connector 

**==> picture [118 x 10] intentionally omitted <==**

**----- Start of picture text -----**<br>
Base Mounting (Horizontal)<br>**----- End of picture text -----**<br>


- If the device has to be mounted in any other orientation, please leave a message via the Contact Us form. 

- Use flexible cable (stranded or solid) of AWG No.6. User should calculate and select the suitable wire specification (type/quantity/diameter) according to actual output current. The torque at the Connector shall not exceed 12.4 kgf.cm. (10.54 inch.lbs). The insulation stripping length should not exceed 0.275” or 7 mm. (Refer to Fig. 3). 

Installation of Mounting Accessories 

**==> picture [125 x 9] intentionally omitted <==**

**----- Start of picture text -----**<br>
Fig. 4  Assembly Reference<br>**----- End of picture text -----**<br>


All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

10 

**TECHNICAL DATASHEET** 

## **PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

- Only use M4 screw ≤ 3 mm (0.12 inch) through the base mounting holes. This is to keep a safe distance between the screw and internal components. 

- Recommended mounting tightening torque: 4~5 kgf.cm (3.47~4.33 inch.lbs). 

## **Fig. 5 Mounting Screw** 

## Safety Instructions 

- If user’s mounting orientation is not according to the recommended mounting orientations, please consult Delta for further information. 

- To ensure sufficient convection cooling, always maintain a safety distance of ≥ 50 mm (1.97 inch) from all ventilated surfaces while the device is in operation. 

- The device is not recommended to be placed on low thermal conductive surface. For example, plastics. 

- The enclosure of the device can become very hot depending on the ambient temperature and load of the power supply. Do not touch the device while it is in operation or immediately after power is turned OFF. Risk of burning! 

- Do not touch the terminals while power is being supplied. Risk of electric shock. 

- Prevent any foreign metal, particles or conductors from entering the device through the openings during installation. It may cause: Electric shock; Safety Hazard; Fire; Product failure 

- The power supply must be mounted by metal screws onto a grounded metal surface. It is highly recommended that the Earth terminal on the connector be connected to the grounded surface. 

All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

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**TECHNICAL DATASHEET** 

## **PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

## **Functions** 

## Start-up Time 

The time required for the output voltage to reach 90% of its final steady state value, after the input voltage is applied. 

## Rise Time 

The time required for the output voltage to change from 10% to 90% of its final steady state value. 

## Hold-up Time 

Time between the collapse of the AC input voltage, and the output falling to 90% of its steady state value. 

## Overvoltage Protection 

The power supply’s overvoltage circuit will be activated when its internal feedback circuit fails. The output voltage shall not exceed its specifications defined on Page 3 under “Protections”. Power supply will latch off, and require removal/re-application of input AC voltage in order to restart. 

## Overload & Over current Protections 

The power supply’s Overload (OLP) and Over current (OCP) Main output Overload (OLP) and Over current (OCP) Protections is achieved by constant output current control. If the output current increases higher than rated current, the current will be clamped to be constant (<130% rated current), output voltage will then drop if output impedance keeps decreasing in the constant current control. Finally output under voltage protection will be triggered if the output voltage falls below 75% rated value and enters “Hiccup mode” (Auto-Recovery). The power supply will recover once the fault condition causing the OLP and OCP is removed and IO is back within the specified limit. 

**Fig. 6 Time Sequence** 

## Dynamic Response (Main Output) 

The power supply output voltage will remain within ± 5% of its steady state value, when subjected to a dynamic load 50 to 100% of its rated current. 

## ◼ **50 to 100% Load** 

**Fig. 9 Hiccup at OLP/OCP** 

Additionally, if the Iout is >100% for a prolong period of time (depending on the load), the Over Temperature Protection (OTP) may be activated due to high temperature on critical components. The power supply will then go into latch mode. 

## Short Circuit Protection 

**==> picture [101 x 10] intentionally omitted <==**

**----- Start of picture text -----**<br>
Fig. 7  Dynamic Load<br>**----- End of picture text -----**<br>


## Inrush Current 

Inrush current is the input current that occurs when the input voltage is first applied. For AC input voltages, the maximum peak value of inrush current will occur during the first half cycle of the applied AC voltage. This peak value decreases exponentially during subsequent cycles of AC voltage. 

Output OLP/OCP function also provides protection against short circuits. When a short circuit is applied, the output current will operate in “Hiccup mode”. The power supply will return to normal operation after the short circuit is removed. 

## Over Temperature Protection 

As mentioned above, the power supply also has Over Temperature Protection (OTP). This is activated when the overload condition persists for an extended duration and the output current is below the overload trigger point but >100% load. In the event of a higher operating temperature condition at 100% load, the power supply will run into OTP when the surrounding air temperature is higher than the operating temperature. When activated, the output voltage will go into latch mode until the input voltage is removed; then, reapplied, and the surrounding air temperature drops to its normal operating temperature. 

**==> picture [99 x 9] intentionally omitted <==**

**----- Start of picture text -----**<br>
Fig. 8  Inrush Current<br>**----- End of picture text -----**<br>


All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

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**TECHNICAL DATASHEET** 

**PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

## Power Good 

Power Good+/- pin is an isolated open collector transistor (80V/50mA rating). A resistor (suggested value 10 Kohm, 1/8 W) can be added between Power Good- pin and DC RTN, Power Good+ pin can be connected to 5 V standby (or, other available pull-up voltage that is no greater than the transistor rating). Value of resistor may have to be adjusted, depending on voltage used, and other end-use conditions of the Power Good+ pin connection to the product.  When AC input is on, Power Good Signal (Shown in below figure) generated will be high. When AC input is off, Power Good Signal generated will be low. There will be a minimum of 5 milliseconds (at 1000 W load) between the time the Power Good Signal goes to low level, and the time when the output reaches 90% of its rated value. 

**==> picture [199 x 134] intentionally omitted <==**

**----- Start of picture text -----**<br>
Power supply System<br>side 5V standby side<br>Power Good +<br>Power Good -<br>Power Good<br>Signal<br>DC RTN<br>**----- End of picture text -----**<br>


**Fig. 10 Power Good Connection** 

## Remote On_Off/Inhibit 

Remote ON_OFF/INHIBIT uses an isolated diode located within the power supply. This signal can be used to enable or disable only the main output. When the main output is disabled, the +5 V Standby output will continue to operate. System can use a switch to conduct through this diode (suggested pull up resistor to 5 V standby with 500~1 Kohm resistor) to disable the main out. 

**==> picture [178 x 140] intentionally omitted <==**

**----- Start of picture text -----**<br>
System Power supply<br>side 5V standby side<br>Remote On_Off +<br>Remote On_Off -<br>Switch Signal<br>DC RTN<br>**----- End of picture text -----**<br>


**Fig. 12 Remote On_Off Connection** 

## Remote Sense 

Remote sense feature can be used to compensate for the extra voltage drop on output wires that are connected from the main output terminals, to the load. With wires connected from the remote sense pins, at the same locations as the wires from the main output, the remote sense function can compensate up to 500mV voltage drop. The power supply will not be damaged if the remote sense pins are shorted, or if a reverse/inverted polarity connection is made to the load 

## Voltage Adjustment 

**Fig. 11 Power Good Time Sequence** 

The power supply provides a potentiometer for user to adjust the output voltage. The output voltage is designed to be able to adjust up to ± 10% of rated voltage, when the output is adjusted below nominal value, the maximum output current is the same as the nominal output, when the output is adjusted above nominal value, the output power cannot exceed the nominal maximum power (the maximum output current will be reduced accordingly). 

## PMBus 

The power supply can communicate with the host product, using PMBus version 1.3 protocols. Multiple functions can be realized, such as monitoring the power supply operation status, and editing the power supply operating set-points. See user instruction for detailed control information. 

All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

13 

**TECHNICAL DATASHEET PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

## Current Sharing 

The power supply supports parallel current sharing function. Two power supply main outputs are connected in parallel and connected The Current Share port can enable this function (Pin13 of CN602, refer to the power structure diagram and lead Foot definition), up to six power supplies can be connected in parallel. 

When the power supply is connected in parallel, adjust the voltage difference between different power supplies to within ± 150 mV, and ensure that the maximum output current does not exceed 80% of the rated current. 

**Parallel Connection without Remote Sense Parallel Connection with Remote Sense** 

**Fig. 13 Parallel Connection** 

All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

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**TECHNICAL DATASHEET** 

## **PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

## Peak Power 

Peak Power (Ppk) is the reserve power available constantly that allows reliable startup to support sudden and short spike of loads with high inrush current typically during turn on to remove the need of more expensive higher rated power supply unit. 

After the output has reached its steady state set value, the power supply can support surge loads with a higher short-term power demand up to Ppk, for a maximum duration of 3 seconds. 

During peak power, limit the average power within 8 seconds to no more than the rated output power (Prated). 

**==> picture [274 x 118] intentionally omitted <==**

**----- Start of picture text -----**<br>
𝑇<br>𝐷𝑢𝑡𝑦 𝑐𝑦𝑐𝑙𝑒 (%) =  𝑇𝑜𝑡𝑎𝑙 𝑇𝑖𝑚𝑒 𝑝   ; (𝑇𝑝 ≤3 sec)<br>[(][𝑃][𝑛][𝑝][𝑘] [× 𝑇][𝑛][)]<br>𝐴𝑣𝑒𝑟𝑎𝑔𝑒 𝑂𝑢𝑡𝑝𝑢𝑡 𝑃𝑜𝑤𝑒𝑟 (𝑃𝑎𝑣𝑔) =  [(𝑃][𝑝][𝑘] [× 𝑇] 𝑇𝑜𝑡𝑎𝑙 𝑇𝑖𝑚𝑒 [𝑝][) +]<br>OR<br>𝑁𝑜𝑛-𝑃𝑒𝑎𝑘 𝑃𝑜𝑤𝑒𝑟 (𝑃𝑛𝑝𝑘) =  [(][𝑃][𝑎𝑣][𝑔] [× 𝑇𝑜𝑡𝑎𝑙 𝑇𝑖𝑚𝑒] 𝑇𝑛 [)][ −] [(][𝑃][𝑝][𝑘] [× 𝑇][𝑝][)]<br>**----- End of picture text -----**<br>


|**Peak Power**<br>**(%)**<br>125%|**Peak Power**<br>**(Ppk)**<br>1,500W|**Peak Power**<br>**Duration (Tp)**<br>3 sec|**Duty Cycle**<br>37.5%|**Non-Peak**<br>**Power (Pnpk)**<br>1,020W|**Non-Peak Power**<br>**Duration (Tn)**<br>5 sec|**Total Time**<br>**(T)**<br>8 sec|
|---|---|---|---|---|---|---|



**Fig. 14 Duty Cycle Calculation** 

All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

15 

**TECHNICAL DATASHEET** 

## **PMS Panel Mount Power Supply** PMS 1,200 W series / PMS- `□` V1K2W1BTD 

## **Attention** 

Delta provides all information in the datasheets on an “AS IS” basis and does not offer any kind of warranty through the information for using the product. In the event of any discrepancy between the information in the catalog and datasheets, the datasheets shall prevail (please refer to www.DeltaPSU.com for the latest datasheets information). Delta shall have no liability of indemnification for any claim or action arising from any error for the provided information in the datasheets. Customer shall take its responsibility for evaluation of using the product before placing an order with Delta. 

Delta reserves the right to make changes to the information described in the datasheets without notice. 

## **Manufacturer and Authorized Representatives Information** 

## Manufacturer 

## Thailand 

Delta Electronics (Thailand) PCL. 909 Pattana 1 Rd., Muang, Samutprakarn, 10280 Thailand 

## Taiwan 

Delta Electronics, Inc. 

3 Tungyuan Road, Chungli Industrial Zone, Taoyuan County 32063, Taiwan 

## Authorized Representatives 

## The Netherlands 

Delta Greentech (Netherlands) B.V. Zandsteen 15, 2132 MZ Hoofddorp, The Netherlands 

## United Kingdom 

Delta Electronics Europe Limited 1 Redwood Court, Peel Park Campus, East Kilbride, Glasgow, G74 5PF, United Kingdom 

All parameters are specified at 25°C ambient and nominal AC input unless otherwise indicated. **www.DeltaPSU.com (December 2025, Rev. 03)** 

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