MEAN WELL LCM-40TW series: DALI-2 tunable-white LED driver - LCM-40TW

Description

LCM-40TW tunable-white LED driver

MEAN WELL LCM-40TW is a two-channel, 40 W maximum-total-output LED driver for tunable-white lighting, with DALI-2 DT8 control, selectable DT6 modes and PUSH dimming. CH1 is cool white and CH2 is warm white; both channels share the 40 W power limit. The factory current setting is 700 mA.

Download MEAN WELL LCM-40TW Datasheet (PDF)Download MEAN WELL LCM-40TW Installation Manual

LCM catalog, PDF pages 83–89. Match the current-setting voltage window and total power across both channels.

Output and current settings

Output configuration Two constant-current channels within a constant-power output envelope. Overall CH1/CH2 range 20–50 V; maximum no-load voltage 53 V. Maximum combined output 40 W, not 40 W per channel.
Current selection 500–1050 mA by physical DIP switches. Below, positions 1/2/3 select current; positions 4/5 select the operating mode. Do not exceed the LED module’s rated current or the 40 W combined limit.
500 mA setting 27–50 V; DIP 1/2/3 = OFF/ON/ON or ON/ON/ON.
600 mA setting 25–50 V; DIP 1/2/3 = OFF/OFF/ON or ON/OFF/ON.
700 mA setting — default 20–50 V; DIP 1/2/3 = ON/ON/OFF.
800 mA setting 20–50 V; DIP 1/2/3 = OFF/ON/OFF.
900 mA setting 20–44 V; DIP 1/2/3 = ON/OFF/OFF.
1050 mA setting 20–38 V; DIP 1/2/3 = OFF/OFF/OFF.
Dimming and ripple 0–100% output, including off; minimum dimming level 0.2%. The available color-temperature adjustment window narrows at very low brightness: use the catalog CCT/output-current chart rather than assuming full color range at every low level. Ripple <2%, measured at 50–100% of maximum output voltage and under rated power.
Standby power <0.5 W in dimming-off state, measured at 180–230 VAC input.

Input and electrical performance

Input voltage and frequency 180–277 VAC, 47–63 Hz; normal DC input 260–390 VDC. The separate emergency-lighting DC scope is stated below.
Power factor and harmonics Built-in active PFC. Power factor ≥0.98 at 230 VAC and ≥0.95 at 277 VAC, full load. THD <10% at the catalog’s stated load conditions: 50% at 230 VAC and 75% at 277 VAC.
Typical efficiency 87% at 800 mA / 50 V.
Typical input current 0.23 A at 230 VAC.
Setup time 500 ms at 230 VAC, measured at first cold start; repeated ON/OFF operation can increase setup time. A DALI controller supporting the DALI power-on function is needed for the 0.5-second setup; otherwise startup may exceed 0.5 second under IEC 62386-101/102.
Inrush current Cold-start inrush 20 A at 230 VAC; width 310 µs at 50% Ipeak, per NEMA 410.
Leakage current <0.75 mA at 277 VAC.
Input/load derating At 60 Hz: 80% load at 180 VAC, rising to 100% at 200 VAC; operate within the specified 277 VAC maximum input.

DALI modes and PUSH control

DIP 4/5 — DT6 single address OFF/ON: one DALI address, CH1 active.
DIP 4/5 — DT6 dual address ON/ON: two DALI addresses, CH1 and CH2 active.
DIP 4/5 — DT8 default OFF/OFF or ON/OFF: one DALI address with tunable-white control, CH1 and CH2 active. Factory mode is DT8.
DALI interface DALI-2 with DT6 and DT8. Standards: IEC 62386-101, -102, -207 (DT6), -209 (DT8), -251.
PUSH wiring For PUSH mode, connect a button between DA+/PUSH and AC/L, and connect DA−/N to AC/N. For DALI mode, connect the DALI bus to DA+ and DA− instead; do not connect the bus to the mains-wired PUSH arrangement.
PUSH timing and limits Short push 0.1–1 s: on/off. Double click: two clicks within 1.5 s. Long push: 1.5–10 s. Pushes shorter than 0.05 s cause no change. Factory dimming level 100%. Maximum 10 drivers per button; button-to-last-driver cable length ≤20 m.
DT6 PUSH behavior Single-address DT6: double click returns to maximum brightness; long push changes brightness. Dual-address DT6: double click returns to maximum brightness; long push makes the output brighter and cooler, or dimmer and warmer.
DT8 PUSH behavior Double click alternates brightness and color-temperature control; long push adjusts the selected function. Long-push dimming stops at its minimum rather than switching off, reverses direction at the next long push, and can increase brightness from standby.

Protection and operating conditions

Overload protection 105–135% of rated power; hiccup mode with automatic recovery after the fault is removed.
Short-circuit protection Constant-current limiting; automatic recovery after the fault is removed.
Overtemperature protection Stage 1 reduces output to 70% load; stage 2 shuts down output. Automatic recovery follows removal of the overtemperature condition.
Case temperature Working Tcase −30 to +85°C; maximum case temperature +85°C.
Cooling/load derating Free-air convection, horizontal mounting. The ambient curve allows full load from −30 to +45°C and ends there. The Tcase curve allows full load through +85°C and ends there. Do not extrapolate either curve into a higher-temperature operating region.
Altitude Catalog operating altitude 2,000 m. Its derating note requires a 3.5°C reduction in allowable ambient temperature for every additional 1,000 m above 2,000 m in fanless use.
Humidity and storage Operating humidity: 20–90% RH, non-condensing. Storage: −40 to +80°C, 10–95% RH.
Temperature coefficient ±0.03%/°C from 0 to +50°C.
Vibration 10–500 Hz, 2 G, 10 minutes per cycle, 60 minutes each along X, Y and Z axes.

Safety and installation

Construction and safety Class II plastic enclosure with no FG connection; SELV; flicker-free design complying with IEEE 1789. ENEC BS EN/EN 61347-1 and 61347-2-13, including EL Appendix J; BS EN/EN 62384 independent controlgear; GB/T 19510.1 and GB/T 19510.213; EAC TP TC 004; BIS IS 15885 (Part 2/Sec 13).
Emergency-lighting scope The catalog’s EL scope is AC input 200–240 VAC and DC input 180–260 VDC. This emergency-lighting condition is separate from the normal 260–390 VDC input range.
Insulation tests I/P–O/P withstand 3.75 kVAC. Insulation resistance >100 MΩ at 500 VDC, 25°C / 70% RH.
EMC and system integration BS EN/EN 55015; BS EN/EN 61000-3-2 Class C at the stated 50% load condition; BS EN/EN 61000-3-3; GB/T 17743, GB/T 17625.1; EAC TP TC 020. Immunity: BS EN/EN 61000-4-2/-3/-4/-5/-6/-8/-11 and BS EN/EN 61547, light-industry level, line-to-line surge 2 kV. Reconfirm EMC in final equipment.
Dimensions and mounting 123.5 × 81.5 × 23 mm (L × W × H), tolerance ±1 mm. Case LCM-60A. Top-view Ø4.2 mm fixing holes on 110 × 68 mm centers; side-view tabs marked 2 × Ø4 mm. Follow the drawing and horizontal cooling orientation.
Terminal assignment TB1: 1 AC/L, 2 AC/N, 3 DA+/PUSH, 4 DA−/N. TB2: 1 +V, 2 +V, 3 −V1 (CH1 cool white), 4 −V2 (CH2 warm white).
Installation Disconnect power before wiring or changing DIP settings. Connect both LED strings with the indicated shared-positive polarity, and keep combined channel power within 40 W. Use the exact DALI or PUSH wiring diagram and the linked installation manual.
Per-unit weight reference 240 g (0.24 kg), the catalog PACKING reference per unit; not a shipment weight.
Reliability and warranty MTBF 2111.7K hours under Telcordia SR-332; 177.4K hours under MIL-HDBK-217F at 25°C. Manufacturer catalog warranty: 5 years, subject to its terms.
Specification conditions Unless otherwise stated, parameters are measured at 230 VAC input, rated current and 25°C ambient. Performance plots use Tcase 85°C. AUX, NTC and synchronization terminals are not provided on this model.

Manufacturer installation instructions

Installation and clearance Install indoors by a qualified electrician. Keep at least 50 mm of ventilation clearance around the driver. Follow the dedicated installation manual and the model-specific load and temperature derating limits.
LED load connection Do not connect a DC/DC converter or constant-current driver between this driver and the LED load. The selected output voltage and total output power must remain within the rated limits.
Ambient installation limit The dedicated installation manual limits ambient temperature to 60°C. This is separate from the case-temperature rating; also obey the current model-specific load derating curve.
PUSH button specification Use only a normally open pushbutton without an indicator light. Follow the model-specific PUSH-to-line diagram; never wire the PUSH button to neutral.
Push-terminal wiring For AC input, LED output and the applicable PUSH/DALI push terminals, the manual specifies 14–18 AWG stranded wire, 0.823–2.08 mm², or solid-wire diameter 1.024–1.628 mm. Strip 10 mm. Suggested push-down force 3–4 kp (6.61–8.81 lbf); no screw-tightening torque is specified for these push terminals.
Cover and tools The manual specifies a 6 mm Phillips screwdriver and 4.6 kgf·cm (4 lbf·in) for the cover screws. Its terminal-tool table specifies a 3 mm Phillips screwdriver; the connection drawing shows pressing the release button with a slotted screwdriver to insert/remove the wire. Use a suitable tool for the actual release mechanism.
DALI wiring length Maximum DALI cable length 300 m, based on the manual’s stated 1.5 mm² or 14 AWG cable reference. This is separate from the 20 m PUSH-cable limit.
Circuit-breaker reference Maximum units on a 230 VAC breaker according to the installation manual: B10: 15; B16: 26; C10: 27; C16: 44. These are calculated references for ABB S201 miniature circuit breakers; select protection for the actual installation.

MEAN WELL LCM-40TW series: DALI-2 tunable-white LED driver - LCM-40TW

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LCM-40TW tunable-white LED driver MEAN WELL LCM-40TW is a two-channel, 40 W maximum-total-output LED driver for tunable-white lighting, with DALI-2... Read more

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    Description

    LCM-40TW tunable-white LED driver

    MEAN WELL LCM-40TW is a two-channel, 40 W maximum-total-output LED driver for tunable-white lighting, with DALI-2 DT8 control, selectable DT6 modes and PUSH dimming. CH1 is cool white and CH2 is warm white; both channels share the 40 W power limit. The factory current setting is 700 mA.

    Download MEAN WELL LCM-40TW Datasheet (PDF)Download MEAN WELL LCM-40TW Installation Manual

    LCM catalog, PDF pages 83–89. Match the current-setting voltage window and total power across both channels.

    Output and current settings

    Output configuration Two constant-current channels within a constant-power output envelope. Overall CH1/CH2 range 20–50 V; maximum no-load voltage 53 V. Maximum combined output 40 W, not 40 W per channel.
    Current selection 500–1050 mA by physical DIP switches. Below, positions 1/2/3 select current; positions 4/5 select the operating mode. Do not exceed the LED module’s rated current or the 40 W combined limit.
    500 mA setting 27–50 V; DIP 1/2/3 = OFF/ON/ON or ON/ON/ON.
    600 mA setting 25–50 V; DIP 1/2/3 = OFF/OFF/ON or ON/OFF/ON.
    700 mA setting — default 20–50 V; DIP 1/2/3 = ON/ON/OFF.
    800 mA setting 20–50 V; DIP 1/2/3 = OFF/ON/OFF.
    900 mA setting 20–44 V; DIP 1/2/3 = ON/OFF/OFF.
    1050 mA setting 20–38 V; DIP 1/2/3 = OFF/OFF/OFF.
    Dimming and ripple 0–100% output, including off; minimum dimming level 0.2%. The available color-temperature adjustment window narrows at very low brightness: use the catalog CCT/output-current chart rather than assuming full color range at every low level. Ripple <2%, measured at 50–100% of maximum output voltage and under rated power.
    Standby power <0.5 W in dimming-off state, measured at 180–230 VAC input.

    Input and electrical performance

    Input voltage and frequency 180–277 VAC, 47–63 Hz; normal DC input 260–390 VDC. The separate emergency-lighting DC scope is stated below.
    Power factor and harmonics Built-in active PFC. Power factor ≥0.98 at 230 VAC and ≥0.95 at 277 VAC, full load. THD <10% at the catalog’s stated load conditions: 50% at 230 VAC and 75% at 277 VAC.
    Typical efficiency 87% at 800 mA / 50 V.
    Typical input current 0.23 A at 230 VAC.
    Setup time 500 ms at 230 VAC, measured at first cold start; repeated ON/OFF operation can increase setup time. A DALI controller supporting the DALI power-on function is needed for the 0.5-second setup; otherwise startup may exceed 0.5 second under IEC 62386-101/102.
    Inrush current Cold-start inrush 20 A at 230 VAC; width 310 µs at 50% Ipeak, per NEMA 410.
    Leakage current <0.75 mA at 277 VAC.
    Input/load derating At 60 Hz: 80% load at 180 VAC, rising to 100% at 200 VAC; operate within the specified 277 VAC maximum input.

    DALI modes and PUSH control

    DIP 4/5 — DT6 single address OFF/ON: one DALI address, CH1 active.
    DIP 4/5 — DT6 dual address ON/ON: two DALI addresses, CH1 and CH2 active.
    DIP 4/5 — DT8 default OFF/OFF or ON/OFF: one DALI address with tunable-white control, CH1 and CH2 active. Factory mode is DT8.
    DALI interface DALI-2 with DT6 and DT8. Standards: IEC 62386-101, -102, -207 (DT6), -209 (DT8), -251.
    PUSH wiring For PUSH mode, connect a button between DA+/PUSH and AC/L, and connect DA−/N to AC/N. For DALI mode, connect the DALI bus to DA+ and DA− instead; do not connect the bus to the mains-wired PUSH arrangement.
    PUSH timing and limits Short push 0.1–1 s: on/off. Double click: two clicks within 1.5 s. Long push: 1.5–10 s. Pushes shorter than 0.05 s cause no change. Factory dimming level 100%. Maximum 10 drivers per button; button-to-last-driver cable length ≤20 m.
    DT6 PUSH behavior Single-address DT6: double click returns to maximum brightness; long push changes brightness. Dual-address DT6: double click returns to maximum brightness; long push makes the output brighter and cooler, or dimmer and warmer.
    DT8 PUSH behavior Double click alternates brightness and color-temperature control; long push adjusts the selected function. Long-push dimming stops at its minimum rather than switching off, reverses direction at the next long push, and can increase brightness from standby.

    Protection and operating conditions

    Overload protection 105–135% of rated power; hiccup mode with automatic recovery after the fault is removed.
    Short-circuit protection Constant-current limiting; automatic recovery after the fault is removed.
    Overtemperature protection Stage 1 reduces output to 70% load; stage 2 shuts down output. Automatic recovery follows removal of the overtemperature condition.
    Case temperature Working Tcase −30 to +85°C; maximum case temperature +85°C.
    Cooling/load derating Free-air convection, horizontal mounting. The ambient curve allows full load from −30 to +45°C and ends there. The Tcase curve allows full load through +85°C and ends there. Do not extrapolate either curve into a higher-temperature operating region.
    Altitude Catalog operating altitude 2,000 m. Its derating note requires a 3.5°C reduction in allowable ambient temperature for every additional 1,000 m above 2,000 m in fanless use.
    Humidity and storage Operating humidity: 20–90% RH, non-condensing. Storage: −40 to +80°C, 10–95% RH.
    Temperature coefficient ±0.03%/°C from 0 to +50°C.
    Vibration 10–500 Hz, 2 G, 10 minutes per cycle, 60 minutes each along X, Y and Z axes.

    Safety and installation

    Construction and safety Class II plastic enclosure with no FG connection; SELV; flicker-free design complying with IEEE 1789. ENEC BS EN/EN 61347-1 and 61347-2-13, including EL Appendix J; BS EN/EN 62384 independent controlgear; GB/T 19510.1 and GB/T 19510.213; EAC TP TC 004; BIS IS 15885 (Part 2/Sec 13).
    Emergency-lighting scope The catalog’s EL scope is AC input 200–240 VAC and DC input 180–260 VDC. This emergency-lighting condition is separate from the normal 260–390 VDC input range.
    Insulation tests I/P–O/P withstand 3.75 kVAC. Insulation resistance >100 MΩ at 500 VDC, 25°C / 70% RH.
    EMC and system integration BS EN/EN 55015; BS EN/EN 61000-3-2 Class C at the stated 50% load condition; BS EN/EN 61000-3-3; GB/T 17743, GB/T 17625.1; EAC TP TC 020. Immunity: BS EN/EN 61000-4-2/-3/-4/-5/-6/-8/-11 and BS EN/EN 61547, light-industry level, line-to-line surge 2 kV. Reconfirm EMC in final equipment.
    Dimensions and mounting 123.5 × 81.5 × 23 mm (L × W × H), tolerance ±1 mm. Case LCM-60A. Top-view Ø4.2 mm fixing holes on 110 × 68 mm centers; side-view tabs marked 2 × Ø4 mm. Follow the drawing and horizontal cooling orientation.
    Terminal assignment TB1: 1 AC/L, 2 AC/N, 3 DA+/PUSH, 4 DA−/N. TB2: 1 +V, 2 +V, 3 −V1 (CH1 cool white), 4 −V2 (CH2 warm white).
    Installation Disconnect power before wiring or changing DIP settings. Connect both LED strings with the indicated shared-positive polarity, and keep combined channel power within 40 W. Use the exact DALI or PUSH wiring diagram and the linked installation manual.
    Per-unit weight reference 240 g (0.24 kg), the catalog PACKING reference per unit; not a shipment weight.
    Reliability and warranty MTBF 2111.7K hours under Telcordia SR-332; 177.4K hours under MIL-HDBK-217F at 25°C. Manufacturer catalog warranty: 5 years, subject to its terms.
    Specification conditions Unless otherwise stated, parameters are measured at 230 VAC input, rated current and 25°C ambient. Performance plots use Tcase 85°C. AUX, NTC and synchronization terminals are not provided on this model.

    Manufacturer installation instructions

    Installation and clearance Install indoors by a qualified electrician. Keep at least 50 mm of ventilation clearance around the driver. Follow the dedicated installation manual and the model-specific load and temperature derating limits.
    LED load connection Do not connect a DC/DC converter or constant-current driver between this driver and the LED load. The selected output voltage and total output power must remain within the rated limits.
    Ambient installation limit The dedicated installation manual limits ambient temperature to 60°C. This is separate from the case-temperature rating; also obey the current model-specific load derating curve.
    PUSH button specification Use only a normally open pushbutton without an indicator light. Follow the model-specific PUSH-to-line diagram; never wire the PUSH button to neutral.
    Push-terminal wiring For AC input, LED output and the applicable PUSH/DALI push terminals, the manual specifies 14–18 AWG stranded wire, 0.823–2.08 mm², or solid-wire diameter 1.024–1.628 mm. Strip 10 mm. Suggested push-down force 3–4 kp (6.61–8.81 lbf); no screw-tightening torque is specified for these push terminals.
    Cover and tools The manual specifies a 6 mm Phillips screwdriver and 4.6 kgf·cm (4 lbf·in) for the cover screws. Its terminal-tool table specifies a 3 mm Phillips screwdriver; the connection drawing shows pressing the release button with a slotted screwdriver to insert/remove the wire. Use a suitable tool for the actual release mechanism.
    DALI wiring length Maximum DALI cable length 300 m, based on the manual’s stated 1.5 mm² or 14 AWG cable reference. This is separate from the 20 m PUSH-cable limit.
    Circuit-breaker reference Maximum units on a 230 VAC breaker according to the installation manual: B10: 15; B16: 26; C10: 27; C16: 44. These are calculated references for ABB S201 miniature circuit breakers; select protection for the actual installation.

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