LCM-40KN

LED Driver, LED Lighting, 42 W, 40 VDC, 1.05 A, Constant Current, 180 V

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Manufacturer: MEAN WELL
Product type: AC / DC LED Power Supplies
SVHC: No SVHC (25-Jun-2025)
Product Range: LCM-40KN
Output Current: 1.05A
LED Driver Mode: Constant Current
Output Power Max: 42W
Input Voltage Max: 295V
Input Voltage Min: 180V
Output Voltage Max: 40VDC
Power Supply Applications: LED Lighting
Delivery and price
Units per pack	50
Price	38.1 €
Current stock	10+
Lead time	30 days
Datasheet
40W Multiple-Stage Constant Current Mode LED Driver 

## **LCM - 40KN  series** 

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||||
|---|---|---|
||||
|AUX|||
||_File Name:LCM-40KN-SPEC   2022-11-28_||



**LCM - 40KN  series** 

40W Multiple-Stage Constant Current Mode LED Driver 

## **SPECIFICATION** 

|**MODEL**<br>**LCM-40KN-**<br>**DC VOLTAGE RANGE**<br>**RATED POWER**<br>**OUTPUT**<br>**SETUP TIMENote.3**<br>**VOLTAGE RANGENote.2**<br>**FREQUENCY RANGE**<br>**POWER FACTOR (Typ.)**<br>**EFFICIENCY (Typ.)Note.4**<br>**AC CURRENT (Typ.)**<br>**INPUT**<br>**INRUSH CURRENT (Typ.)**<br>**LEAKAGE CURRENT**<br>**SAFETY STANDARDS**<br>**WORKING HUMIDITY**<br>**STORAGE TEMP., HUMIDITY**<br>**TEMP. COEFFICIENT**<br>**VIBRATION**<br>**MTBF**<br>**DIMENSION**<br>**OTHERS**<br>**NOTE**<br>**PACKING**<br>42W<br>110V<br>65V<br>500ms / 230VAC<br>180 ~ 295VAC          220 ~ 392VDC<br>47 ~ 63Hz<br>90%<br>20 ~ 90% RH non-condensing<br>-40 ~ +80℃, 10 ~ 95% RH<br>10 ~ 500Hz, 2G 10min./1cycle, period for  60min. each along X, Y, Z axes<br>℃<br><br><br><br><br>~<br><br><br><br><br><br>℃<br>℃<br><br><br>※  ：  ,  https://www.meanwell.com/serviceDisclaimer.aspx<br>**OPEN CIRCUIT VOLTAGE (max.)**<br>**ENVIRONMENT**<br>**SAFETY &**<br>**FUNCTION**<br>**EMC**<br>**PROTECTION**<br>**WITHSTAND VOLTAGE**<br>**ISOLATION RESISTANCE**<br>I/P-O/P:3.75KVAC<br>I/P-O/P:>100M Ohms / 500VDC / 25℃/ 70% RH<br>**CURRENT LEVEL**<br>350mA<br>600mA<br>500mA<br>700mA(default)<br>900mA<br>1050mA<br>**CURRENT TOLERANCE**<br>**SHORT CIRCUIT**<br>**OVER VOLTAGE**<br>**OVER TEMPERATURE**<br>**TEMP. COMPENSATION**<br>**SYNCHRONIZATION**<br>Constant current limiting, recovers automatically after fault condition is removed<br>Shutdown o/p voltage,re-power on to recover<br>Please refer to "SYNCHRONIZATION OPERATION” section<br>**DIMMING**<br>Please refer to "DIMMING OPERATION" section<br>Shutdown o/p voltage, re-power on to recover<br>110 ~ 130V<br>By external NTC, please refer to “TEMPERATURE COMPENSATION OPERATION”section<br>**TOTAL HARMONIC DISTORTION**<br><0.5mA / 240VAC<br>PF≧0.975/230VAC, PF≧0.95/277VAC@full load<br>(Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)<br>COLD START 20A(twidth=310μs measured at 50% Ipeak) at 230VAC<br>;Per NEMA 410<br>±5%<br>±0.03%/℃(0 ~ 50℃)<br>**MAX. No. of PSUs on 16A**<br>**CIRCUIT BREAKER**<br>21 units (circuit breaker of type B) / 35 units  (circuit breaker of type C) at 230VAC<br>(Please refer to "STATIC CHARACTERISTIC" section)<br>**WORKING TEMP.**<br>**MAX. CASE TEMP.**<br>Tcase=+90℃<br>Tcase=-30 ~ +90℃(Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)<br>**AUXILIARY DC OUTPUT**<br>Nominal 12V(deviation 11.4~12.6V)@50mA for AUX-Type only<br>**CURRENT RIPPLENote.5**<br>5.0% max. @rated current<br>Current level selectable via DIP switch, please refer to”DIP SWITCH TABLE” section<br>THD< 20%(@load≧75%)<br>(Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)<br>2 ~ 100V<br>2 ~ 67V<br>2 ~ 80V<br>2 ~ 57V<br>2 ~ 45V<br>2 ~ 40V<br>0.23A/230VAC<br>ENEC BS EN/EN61347-1, BS EN/EN61347-2-13, BS EN/EN62384 independent, BIS IS15885(Part2/Sec13),  EAC TP TC 004<br>approved, GB19510.14 and GB19510.1(by request) ; According to BS EN/EN50172, BS EN/EN 60598-2-22,<br>BS EN/EN61347-2-13 appendix J suitable for emergency installations(EL)(AC Input: 200-240Vac)<br>Compliance to BS EN/EN55015, BS EN/EN61000-3-2 Class C(@load≧40%) ; BS EN/EN61000-3-3; GB17625.1,GB17743,<br>EAC TP TC 020<br>**EMC IMMUNITY**<br>1764.6K hrs min.      Telcordia SR-332 (Bellcore) ;  190.4K hrs min.      MIL-HDBK-217F (25℃)<br>123.5*81.5*23mm (L*W*H)<br>0.24Kg ; 54pcs/15Kg/1.12CUFT<br><0.5W for Blank-Type, <1.2W for AUX-Type<br>**STANDBY POWER**<br>**CONSUMPTIONNote.6**<br>**EMC EMISSION  Note.7**<br>Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN61547, light industry level(surge immunity Line-Line 2KV),<br>EAC TP TC 020<br>**KNX STANDARDS**<br>Certified protocol|**MODEL**<br>**LCM-40KN-**<br>**DC VOLTAGE RANGE**<br>**RATED POWER**<br>**OUTPUT**<br>**SETUP TIMENote.3**<br>**VOLTAGE RANGENote.2**<br>**FREQUENCY RANGE**<br>**POWER FACTOR (Typ.)**<br>**EFFICIENCY (Typ.)Note.4**<br>**AC CURRENT (Typ.)**<br>**INPUT**<br>**INRUSH CURRENT (Typ.)**<br>**LEAKAGE CURRENT**<br>**SAFETY STANDARDS**<br>**WORKING HUMIDITY**<br>**STORAGE TEMP., HUMIDITY**<br>**TEMP. COEFFICIENT**<br>**VIBRATION**<br>**MTBF**<br>**DIMENSION**<br>**OTHERS**<br>**NOTE**<br>**PACKING**<br>42W<br>110V<br>65V<br>500ms / 230VAC<br>180 ~ 295VAC          220 ~ 392VDC<br>47 ~ 63Hz<br>90%<br>20 ~ 90% RH non-condensing<br>-40 ~ +80℃, 10 ~ 95% RH<br>10 ~ 500Hz, 2G 10min./1cycle, period for  60min. each along X, Y, Z axes<br>℃<br><br><br><br><br>~<br><br><br><br><br><br>℃<br>℃<br><br><br>※  ：  ,  https://www.meanwell.com/serviceDisclaimer.aspx<br>**OPEN CIRCUIT VOLTAGE (max.)**<br>**ENVIRONMENT**<br>**SAFETY &**<br>**FUNCTION**<br>**EMC**<br>**PROTECTION**<br>**WITHSTAND VOLTAGE**<br>**ISOLATION RESISTANCE**<br>I/P-O/P:3.75KVAC<br>I/P-O/P:>100M Ohms / 500VDC / 25℃/ 70% RH<br>**CURRENT LEVEL**<br>350mA<br>600mA<br>500mA<br>700mA(default)<br>900mA<br>1050mA<br>**CURRENT TOLERANCE**<br>**SHORT CIRCUIT**<br>**OVER VOLTAGE**<br>**OVER TEMPERATURE**<br>**TEMP. COMPENSATION**<br>**SYNCHRONIZATION**<br>Constant current limiting, recovers automatically after fault condition is removed<br>Shutdown o/p voltage,re-power on to recover<br>Please refer to "SYNCHRONIZATION OPERATION” section<br>**DIMMING**<br>Please refer to "DIMMING OPERATION" section<br>Shutdown o/p voltage, re-power on to recover<br>110 ~ 130V<br>By external NTC, please refer to “TEMPERATURE COMPENSATION OPERATION”section<br>**TOTAL HARMONIC DISTORTION**<br><0.5mA / 240VAC<br>PF≧0.975/230VAC, PF≧0.95/277VAC@full load<br>(Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)<br>COLD START 20A(twidth=310μs measured at 50% Ipeak) at 230VAC<br>;Per NEMA 410<br>±5%<br>±0.03%/℃(0 ~ 50℃)<br>**MAX. No. of PSUs on 16A**<br>**CIRCUIT BREAKER**<br>21 units (circuit breaker of type B) / 35 units  (circuit breaker of type C) at 230VAC<br>(Please refer to "STATIC CHARACTERISTIC" section)<br>**WORKING TEMP.**<br>**MAX. CASE TEMP.**<br>Tcase=+90℃<br>Tcase=-30 ~ +90℃(Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)<br>**AUXILIARY DC OUTPUT**<br>Nominal 12V(deviation 11.4~12.6V)@50mA for AUX-Type only<br>**CURRENT RIPPLENote.5**<br>5.0% max. @rated current<br>Current level selectable via DIP switch, please refer to”DIP SWITCH TABLE” section<br>THD< 20%(@load≧75%)<br>(Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)<br>2 ~ 100V<br>2 ~ 67V<br>2 ~ 80V<br>2 ~ 57V<br>2 ~ 45V<br>2 ~ 40V<br>0.23A/230VAC<br>ENEC BS EN/EN61347-1, BS EN/EN61347-2-13, BS EN/EN62384 independent, BIS IS15885(Part2/Sec13),  EAC TP TC 004<br>approved, GB19510.14 and GB19510.1(by request) ; According to BS EN/EN50172, BS EN/EN 60598-2-22,<br>BS EN/EN61347-2-13 appendix J suitable for emergency installations(EL)(AC Input: 200-240Vac)<br>Compliance to BS EN/EN55015, BS EN/EN61000-3-2 Class C(@load≧40%) ; BS EN/EN61000-3-3; GB17625.1,GB17743,<br>EAC TP TC 020<br>**EMC IMMUNITY**<br>1764.6K hrs min.      Telcordia SR-332 (Bellcore) ;  190.4K hrs min.      MIL-HDBK-217F (25℃)<br>123.5*81.5*23mm (L*W*H)<br>0.24Kg ; 54pcs/15Kg/1.12CUFT<br><0.5W for Blank-Type, <1.2W for AUX-Type<br>**STANDBY POWER**<br>**CONSUMPTIONNote.6**<br>**EMC EMISSION  Note.7**<br>Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN61547, light industry level(surge immunity Line-Line 2KV),<br>EAC TP TC 020<br>**KNX STANDARDS**<br>Certified protocol|**LCM-40KN-**|**LCM-40KN-**|**LCM-40KN-**|**LCM-40KN-**|**LCM-40KN-**|**LCM-40KN-**|
|---|---|---|---|---|---|---|---|
||**CURRENT LEVEL**|350mA<br>600mA<br>500mA<br>700mA(default)<br>900mA<br>1050mA<br>Current level selectable via DIP switch, please refer to”DIP SWITCH TABLE” section||||||
||**RATED POWER**|42W||||||
||**DC VOLTAGE RANGE**|2 ~ 100V|2 ~ 80V|2 ~ 67V|2 ~ 57V|2 ~ 45V|2 ~ 40V|
||**OPEN CIRCUIT VOLTAGE (max.)**|110V|||65V|||
||**CURRENT RIPPLENote.5**|5.0% max. @rated current||||||
||**CURRENT TOLERANCE**|±5%||||||
||**AUXILIARY DC OUTPUT**|Nominal 12V(deviation 11.4~12.6V)@50mA for AUX-Type only||||||
||**SETUP TIMENote.3**|500ms / 230VAC||||||
||**VOLTAGE RANGENote.2**|180 ~ 295VAC          220 ~ 392VDC<br>(Please refer to "STATIC CHARACTERISTIC" section)||||||
||**FREQUENCY RANGE**|47 ~ 63Hz||||||
||**POWER FACTOR (Typ.)**|PF≧0.975/230VAC, PF≧0.95/277VAC@full load<br>(Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)||||||
||**TOTAL HARMONIC DISTORTION**|THD< 20%(@load≧75%)<br>(Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)||||||
||**EFFICIENCY (Typ.)Note.4**|90%||||||
||**AC CURRENT (Typ.)**|0.23A/230VAC||||||
||**INRUSH CURRENT (Typ.)**|COLD START 20A(twidth=310μs measured at 50% Ipeak) at 230VAC<br>;Per NEMA 410||||||
||**MAX. No. of PSUs on 16A**<br>**CIRCUIT BREAKER**|21 units (circuit breaker of type B) / 35 units  (circuit breaker of type C) at 230VAC||||||
||**LEAKAGE CURRENT**|<0.5mA / 240VAC||||||
||**STANDBY POWER**<br>**CONSUMPTIONNote.6**|<0.5W for Blank-Type, <1.2W for AUX-Type||||||
||**SHORT CIRCUIT**|Constant current limiting, recovers automatically after fault condition is removed||||||
||**OVER VOLTAGE**|Shutdown o/p voltage, re-power on to recover<br>110 ~ 130V||||||
||**OVER TEMPERATURE**|Shutdown o/p voltage,re-power on to recover||||||
||**DIMMING**|Please refer to "DIMMING OPERATION" section||||||
||**SYNCHRONIZATION**|Please refer to "SYNCHRONIZATION OPERATION” section||||||
||**TEMP. COMPENSATION**|By external NTC, please refer to “TEMPERATURE COMPENSATION OPERATION”section||||||
||**WORKING TEMP.**|Tcase=-30 ~ +90℃(Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)||||||
||**MAX. CASE TEMP.**|Tcase=+90℃||||||
||**WORKING HUMIDITY**|20 ~ 90% RH non-condensing||||||
||**STORAGE TEMP., HUMIDITY**|-40 ~ +80℃, 10 ~ 95% RH||||||
||**TEMP. COEFFICIENT**|±0.03%/℃(0 ~ 50℃)||||||
||**VIBRATION**|10 ~ 500Hz, 2G 10min./1cycle, period for  60min. each along X, Y, Z axes||||||
||**SAFETY STANDARDS**|ENEC BS EN/EN61347-1, BS EN/EN61347-2-13, BS EN/EN62384 independent, BIS IS15885(Part2/Sec13),  EAC TP TC 004<br>approved, GB19510.14 and GB19510.1(by request) ; According to BS EN/EN50172, BS EN/EN 60598-2-22,<br>BS EN/EN61347-2-13 appendix J suitable for emergency installations(EL)(AC Input: 200-240Vac)||||||
||**KNX STANDARDS**|Certified protocol||||||
||**WITHSTAND VOLTAGE**|I/P-O/P:3.75KVAC||||||
||**ISOLATION RESISTANCE**|I/P-O/P:>100M Ohms / 500VDC / 25℃/ 70% RH||||||
||**EMC EMISSION  Note.7**|Compliance to BS EN/EN55015, BS EN/EN61000-3-2 Class C(@load≧40%) ; BS EN/EN61000-3-3; GB17625.1,GB17743,<br>EAC TP TC 020||||||
||**EMC IMMUNITY**|Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN61547, light industry level(surge immunity Line-Line 2KV),<br>EAC TP TC 020||||||
||**MTBF**|1764.6K hrs min.      Telcordia SR-332 (Bellcore) ;  190.4K hrs min.      MIL-HDBK-217F (25℃)||||||
||**DIMENSION**|123.5*81.5*23mm (L*W*H)||||||
||**PACKING**|0.24Kg ; 54pcs/15Kg/1.12CUFT||||||
||℃<br><br><br><br><br>~<br><br><br><br><br><br>℃<br>℃<br><br><br>※  ：  ,  https://www.meanwell.com/serviceDisclaimer.aspx|||||||



_File Name:LCM-40KN-SPEC   2022-11-28_ 

**LCM - 40KN  series** 

## 40W Multiple-Stage Constant Current Mode LED Driver 

## **BLOCK DIAGRAM** 

PFC fosc : 60KHz PWM fosc : 80KHz 

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**----- Start of picture text -----**<br>
RECTIFIERS +12Vaux<br>(optional)<br>EMI FILTER PFC POWER RECTIFIERS +V<br>I/P & CIRCUIT SWITCHING & -V<br>RECTIFIERS FILTER<br>CURRENT  MCU KNX+<br>LIMIT KNX-<br>O.L.P. DETECTION<br>PFC PWM CIRCUIT<br>CONTROL CONTROL<br>O.T.P.<br>O.V.P.<br>**----- End of picture text -----**<br>


## **DIP SWITCH TABLE** 

LCM-40KN is a multiple-stage constant current driver, selection of output current through DIP switch is exhibited below. 

|Io<br>DIP S.W.|1|2|3|4|5|6|Max. LED voltage|
|---|---|---|---|---|---|---|---|
|350mA|----|----|----|----|----|----|100V|
|500mA|ON|----|----|----|----|----|80V|
|600mA|ON|ON|----|----|----|----|67V|
|700mA(factory default)|ON|ON|ON|----|----|ON|57V|
|900mA|ON|ON|ON|ON|----|ON|45V|
|1050mA|ON|ON|ON|ON|ON|ON|40V|



More current options through DIP switch are exhibited below. 

|Io<br>DIP S.W.|1|2|3|4|5|6|Max. LED voltage|
|---|---|---|---|---|---|---|---|
|450mA|----|ON|----|----|----|----|78V|
|550mA|----|----|----|ON|----|----|73V|
|650mA|ON|----|----|----|ON|----|62V|
|750mA|ON|ON|----|----|ON|ON|53V|
|800mA|ON|ON|----|ON|----|ON|50V|
|850mA|ON|ON|ON|----|ON|ON|47V|
|950mA|ON|ON|----|ON|ON|ON|42V|



Note: The max. LED voltage connected at the output should be always less than the table above. 

_File Name:LCM-40KN-SPEC   2022-11-28_ 

**LCM - 40KN  series** 

40W Multiple-Stage Constant Current Mode LED Driver 

## **DIMMING OPERATION** 

## ※ **KNX interface** 

- ‧ Apply KNX Bus cable between KNX+ and KNX- 

‧The application program(database) can be downloaded via Online Catalogs from ETS or via http://www.meanwell.com/productCatalog.aspx 

|**Parametrization options**|**Description**|
|---|---|
|Switch functions|‧Turn on brightness<br>‧Dimming speed for turn on/off<br>‧Switch telegram and status<br>‧Switch on/off delay|
|Dimming|‧Dimming speed for 0~100%<br>‧Allow switch on via relative dimming<br>‧Push dimming with AC inut port<br>‧Block object for push dimming|
|Brightness value|‧Dimming speed for transition brightness values<br>‧Permit set switch on and off brightness via value<br>‧Brightness value and status|
|Fault message|‧Lamp fault<br>‧AC/DC input monitor fault messages|
|Other functions|‧Reaction on KNX voltage failure/recovery<br>‧Power-On level<br>‧Dimming curve select(linear/log)<br>‧Synchronous dimming output<br>‧Block function(Block1&Block2)<br>‧Staircase lighting function(multi-stage switch-off)|
|General function|‧Cyclic monitoring telegram(In operation)|
|8 Scenes|‧Recall and save via KNX with 8-bit telegram|
|Operating hours & CLO|‧Operating hours counter<br>‧Constant light out(5 scheduled divisions)|
|Power consumption feedback|‧Power consumption report|



## ※ **CONSTANT LIGHT OUTPUT** 

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**----- Start of picture text -----**<br>
100%<br>Energy saving with CLO<br>80%<br>60%<br>10000 20000 30000 40000 50000<br>Time/hrs<br>Power with CLO Power without CLO<br>Lumen with CLO Lumen without CLO<br>Power input relative to lumen output<br>**----- End of picture text -----**<br>


_File Name:LCM-40KN-SPEC   2022-11-28_ 

**LCM - 40KN  series** 

40W Multiple-Stage Constant Current Mode LED Driver 

**==> picture [463 x 196] intentionally omitted <==**

**----- Start of picture text -----**<br>
※ PUSH dimming or AC/DC input monitor(Primary side)<br>◎  PUSH dimming<br>LCM-40KN<br>PUSH Push Button<br>AC/N AC/N (or Backup DC- input)<br>AC/L AC/L (or Backup DC+ input)<br>‧KNX bus need to be connected when using PUSH Dimming<br>‧The detailed function of PUSH dimming, please refer to the database.<br>‧The maximum length of the cable between the push button and driver is 20 meters.<br>‧The mechanical push button can be connected only between the PUSH terminal, as displayed in the diagram,<br> and AC/L (in brown or black); it will lead to short circuit if it is connected to AC/N.<br>‧In case the PUSH dimming is set locally, up to 10 drivers can perform the PUSH dimming at the same time when utilizing one common push button.<br>‧In case the PUSH dimming is set independently via ETS, the number of drivers is done through group address and determined by the ETS project designer.<br>**----- End of picture text -----**<br>


- **AC/DC input monitor** 

LCM-40KN PUSH AC/N AC/N (or Backup DC- input) AC/L AC/L (or Backup DC+ input) 

- ‧KNX bus need to be connected when using AC/DC input monitor 

- ‧The detailed function of AC/DC input monitor(emergency lighting), please refer to the database and instruction manual. 

## **SYNCHRONIZATION OPERATION** 

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**----- Start of picture text -----**<br>
‧Synchronization up to 10 drivers (1 master + 9 slaves)<br>‧Dimming operating range : 6%~100%<br>‧Sync cable length : < 5m<br>‧Sync cable type : Flat cable<br>‧Sync cable cross section area : 22 – 24 AWG (0.2~0.3mm )2<br>SYN. SYN. SYN.<br>LCM-40 LCM-40KN LCM-40<br>(Slave 2) - (Master) - (Slave 1) -<br>5m 5m<br>NOTE: Min. Dimming operating range depends on database setting.<br>+ + +<br>**----- End of picture text -----**<br>


_File Name:LCM-40KN-SPEC   2022-11-28_ 

**LCM - 40KN series** 

40W Multiple-Stage Constant Current Mode LED Driver 

## **TEMPERATURE COMPENSATION OPERATION** 

LCM-40KN have the built-in temperature compensation function ; by connecting a temperature sensor (NTC resistor) between the _+NTC / -NTC_ terminal of LCM-40KN and the detecting point on the lighting system or the surrounding environment, output current of LCM-40KN could be correspondingly changed, based on the sensed temperature, to ensure the long life of LED. 

**==> picture [470 x 264] intentionally omitted <==**

**----- Start of picture text -----**<br>
NTC  derating curve<br>105<br>100<br>220K220KOΩ<br>95<br>330K330KOΩ<br>470K470KOΩ<br>90<br>85<br>80<br>75<br>70<br>65<br>55 60 65 70 75 80 85 90 95<br>Sensed Temperature( ℃ )<br>◎ LCM-40KN can still be operated normally when the NTC resistor is not connected and the value of output current will be the current level selected<br>through the DIP switch.<br>◎ NTC reference:<br>Output Current (%)<br>**----- End of picture text -----**<br>


|NTC resistance|Output Current|
|---|---|
|220K|< 60<br>, 100% of the rated current (corresponds to the setting current level)<br>℃<br>> 60<br>, output current begins to reduce, please refer to the curve for details.<br>℃|
|330K|< 70<br>, 100% of the rated current (corresponds to the setting current level)<br>℃<br>> 70<br>, output current begins to reduce, please refer to the curve for details.<br>℃|
|470K|< 80<br>, 100% of the rated current (corresponds to the setting current level)<br>℃<br>> 80<br>, output current begins to reduce, please refer to the curve for details.<br>℃|



Notes: 1. MEAN WELL does not offer the NTC resistor and all the data above are measured by using THINKING TTC03 series. 

   2. If other brands of NTC resistor is applied,please check the temperature curve first. 

- KNX control, dimming and synchronization function of the driver will be invalid when the "temperature compensation" function is in use. 

_File Name:LCM-40KN-SPEC   2022-11-28_ 

**LCM - 40KN  series** 

40W Multiple-Stage Constant Current Mode LED Driver 

## **OUTPUT LOAD vs TEMPERATURE** 

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**----- Start of picture text -----**<br>
100 100<br>Others<br>80 80<br>60 60<br>40 1050mA 40<br>20 20<br>-30 -15 0 15 30 40 50 60 70 (HORIZONTAL) -30 -25 0 20 45 55 65 75 90 (HORIZONTAL)<br>AMBIENT TEMPERATURE,Ta ( ℃ ) Tcase ( ℃ )<br>LOAD (%) LOAD (%)<br>**----- End of picture text -----**<br>


## **STATIC CHARACTERISTIC** 

**==> picture [210 x 146] intentionally omitted <==**

**----- Start of picture text -----**<br>
100<br>90<br>80<br>70<br>60<br>50<br>40<br>180 190 200 210 220 230 240 250 260 270 280 295<br>INPUT VOLTAGE (V) 60Hz<br>LOAD (%)<br>**----- End of picture text -----**<br>


※De-rating is needed under low input voltage. 

_File Name:LCM-40KN-SPEC   2022-11-28_ 

**LCM - 40KN series** 

MEAN WELL 40W Multiple-Stage Constant Current Mode LED Driver **- series** ~~ee~~ 

## **TOTAL HARMONIC DISTORTION (THD)** 

**==> picture [496 x 623] intentionally omitted <==**

**----- Start of picture text -----**<br>
※ Tcase at 80℃<br>70%<br>50%<br>45% 60%<br>40%<br>50%<br>35%30% a 350mA 40% —-_ 350mA<br>25% aa 500mA — 500mA<br>20% ~— 600mA 30% oe 600mA<br>15% -o— 700mA 20% —— 700mA<br>10% 900mA 900mA<br>10%<br>5% —— 1050mA ~— 1050mA<br>0% 0%<br>10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>LOAD LOAD<br>(230Vac Input) (277Vac Input)<br>| POWER FACTOR (PF) CHARACTERISTIC<br>※ Tcase at 80℃<br>1.00<br>0.98<br>0.97 0.95 ee<br>0.92<br>0.94 0.89 a<br>0.91 350 0.86 350<br>~~ 0.83 | ~—<br>0.88 _— 500 0.80 a 7, — 500<br>0.77<br>0.85 — 600 0.74 | \fA —- 600<br>0.82 700 0.71 700<br>ne 0.68 /, _<br>0.790.76 —oe 9001050 0.650.620.59 fqdy a— 9001050<br>0.73 0.56<br>0.53<br>0.70 0.50<br>10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>(40W) (40W)<br>LOAD LOAD<br>(230Vac Input) (277Vac Input)<br>| EFFICIENCY vs LOAD<br>LCM-40KN series possess superior working efficiency that up to 90% can be reached in field applications.<br>※ Tcase at 80℃<br>95.0% 95.0%<br>90.0% 90.0%<br>85.0% 85.0%<br>80.0% 350 80.0% 350<br>75.0% |e r ~~ 500 75.0% 7 2 a ~ 500<br>70.0% | Y 600 70.0% lYTCa a 600<br>65.0% | LA ~~ 700 65.0% | M f _ 700<br>60.0% V/7 _ 900 60.0% | 7 a 900<br>55.0% 1050 55.0% 1050<br>ij _~_ {V / _=<br>50.0% 50.0%<br>45.0% 45.0%<br>10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>LOAD LOAD<br>(230Vac Input) (277Vac Input)<br>THD THD<br>PF PF<br>EFFICIENCY (%) EFFICIENCY (%)<br>**----- End of picture text -----**<br>


_File Name:LCM-40KN-SPEC   2022-11-28_ 

**LCM - 40KN  series** 

40W Multiple-Stage Constant Current Mode LED Driver 

**==> picture [480 x 405] intentionally omitted <==**

**----- Start of picture text -----**<br>
MECHANICAL SPECIFICATION Case No.LCM-60B          Unit:mm<br>123.5<br>6.75 110<br>1<br>6.75 23 TB1<br>1<br>2<br>34 TB3<br>56<br>1<br>TB4<br>2<br>1<br>2TB5<br>ON<br>1 2 3 4 5 6<br>KNX programming button Programming LED(RED)<br>39.3 65.5<br>7.8 7.8<br>2-ψ4<br>Bottom View<br>※Terminal Pin No. Assignment( TB1)<br>Pin No. Assignment<br>1 AC/L<br>2 AC/N<br>3 PUSH<br>※Terminal Pin No. Assignment(TB3)<br>Pin No. Assignment Pin No. Assignment Pin No. Assignment<br>1 +FAN(optional) 3 +NTC 5 +SYN<br>2 -FAN(optional) 4 -NTC 6 -SYN<br>4.2<br>ψ<br>2-<br>6.75<br>6.75<br>81.5 68<br>4<br>23<br>**----- End of picture text -----**<br>


|※Terminal Pin No. Assignment(<br>)<br>TB5<br>Pin No.<br>1<br>2<br>Assignment<br>+V<br>-V<br>◎Pin1_(+FAN) /_Pin2_(-FAN)_is the Auxiliary DC output for the optional model LCM-40KN-AUX; it can be used to d<br>※Terminal Pin No. Assignment(<br>)<br>TB4<br>Pin No.<br>1<br>2<br>Assignment<br>KNX-<br>KNX+|※Terminal Pin No. Assignment(<br>)<br>TB5<br>Pin No.<br>1<br>2<br>Assignment<br>+V<br>-V<br>◎Pin1_(+FAN) /_Pin2_(-FAN)_is the Auxiliary DC output for the optional model LCM-40KN-AUX; it can be used to d<br>※Terminal Pin No. Assignment(<br>)<br>TB4<br>Pin No.<br>1<br>2<br>Assignment<br>KNX-<br>KNX+|
|---|---|
|Pin No.|Assignment|
|1|+V|
|2|-V|



## **Installation Manual** 

Please refer to : http://www.meanwell.com/manual.html 

_File Name:LCM-40KN-SPEC   2022-11-28_
Updated at April 17, 2026
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