Mean Well Ldc-55 55w Constant Power Mode Linear Led Driver User Manual

LDC-55 55W Constant Power MODE Linear LED Driver
User Manual http://www.meanwell.com.cn/Upload/PDF/LED_EN.pdf

Features

• Constant Power mode output
• Metal housing design
• Full Power at 70~100% max Current
• Built-in active PFC function
• Flicker Free design
• Class 2 power supply
• No load / Standby power consumption <0.5W
• Output current level pre-settable
• Function options: 3 in 1 dimming (dim-to-off); DALI interface, push dimming
• Typical lifetime>50000 hours
• SELV and Isolated
• 5 years warranty

Applications

• LED panel lighting
• Indoor LED lighting
• Linear LED lighting

GTIN CODE
MW Search: https://vww.meanwell.com/serviceGTIN.aspx 

Description

LDC-55 series is a55W AC/DC LED driver featuring the Constant Power mode output. LDC-55 operates from 180~295VAC and the output current can be adjusted between 500mA  to 1600mA.
Thanks to the efficiency of up to 90%, with the fanless design, the entire series is able to operate for -25C~+80C case temperature under free air convection.LDC-55 is equipped with various function options, such as dimming methodologies, so as to provide the optimal design flexibility for LED lighting systems.

Mi Model Encoding

SPECIFICATION

BLOCK DIAGRAM

OUTPUT CURRENT SETTING

• I-V Operating Area.
  Output rated current level can be adjusted by an additive resistance.
• Rated current setting table
  

  18K

  20K

  24K

  27K

  30K

  33K

  36K

  39K

  43K

  47K

  56K

  68K

  91K

  150K

  200K

  NC

  1.6A

  1.52A

  1.45A

  1.32A

  1.26A

  1.2A

  1.15A

  1.11A

  1.06A

  1.03A

  0.95A

  0.88A

  0.8A

  0.7A

  0.65A

  0.5A

DIMMING OPERATION

3 in 1 dimming function(for B-Type)

• Output constant current level can be adjusted by applying one of the three methodologies between DIM+ and DIM-: 0 ~ 10VDC, or 10V PWM signal or resistance.
• Direct connecting to LEDs is suggested. It is not suitable to be used with additional drivers.
• Dimming source current from power supply: 100 A (typ.)

Applying additive 0 ~ 10VDC

Applying additive 10V PWM signal (frequency range 100Hz ~ 3KHz):

Applying additive resistance:

Note :

1. Min. dimming level is about 8% and the output current is not defined when 0%< out<8%.
2. The output current could drop down to 0% when dimming input is about 0Vdc or 10V PWM signal with a 0% duty cycle.
3. To ensure the dimming performance at a low dimming level, the output current must be over 75mA.

DALI interface

PUSH dimming(primary side)

• The factory default dimming level is at 100%.
• If the push action lasts less than 0.05 sec., it will not lead to a change for the status of the driver.
• Up to 10 drivers can perform the PUSH dimming at the same time when utilizing one common push button.
• The maximum length of the cable from the push button to the last driver is 20 meters.
• The additive push button can be connected only between the LS terminal, as displayed in the diagram, and AC/L (in brown or black); it will lead to short circuit if it is connected to AC/N.

DALI interface(primary side)

• Apply DALI signal between DA+ and DA-
• DALI protocol comprises 16 groups and 64 addresses.
• First step is fixed at 8% of rated output power.

NOTE: DALI, Push dimming can not be used in the same time!(The factory setting defaults to DA)

TEMPERATURE COMPENSATION OPERATION

LDC-55 have the built-in temperature compensation function ; by connecting a temperature sensor (NTC terminal) between the +NTC / -NTC terminal of LDC-55 and the  detecting point on the lighting system or the surrounding environment, output current of LDC-55 could be correspondingly changed, based on the sensed temperature, to ensure the long life of LED.

• LDC-55 can still be operated normally when the NTC resistor is not connected and the value of output current will be the current level selected through the IADJ. pin
• NTC reference:

Notes:

1. MEAN WELL does not offer the NTC resistor and all the data above are measured by using a resistor.
2. If the new brand of NTC resistor is applied, please check the temperature curve first.
   Dimming function of the driver will be invalid when the “temperature compensation” function is in use.

OUTPUT LOAD vs TEMPERATURE

STATIC CHARACTERISTIC

POWER FACTOR (PF) CHARACTERISTIC

TOTAL HARMONIC DISTORTION (THD)

EFFICIENCY vs LOAD
LDC-55 series possess superior working efficiency up to 90%.

EFFICIENCY vs LOAD
LDC-55 series possess superior working efficiency up to 90%.
1100mA Model, Tcase at 75℃

LIFETIME

MECHANICAL SPECIFICATION

Terminal Pin No. Assignment (TB1) :

Terminal Pin No. Assignment (TB2) :

Installation Manual

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

References

• Installation Manual-MEAN WELL Switching Power Supply Manufacturer