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Functional Block Diagram

With the LDC-120 “B” model, the output current level can be adjusted (Dimmed) by three different methods; Resistive, Analog or

Digital. Adjustments are made using the +DIM and -DIM inputs.

Resistive: Connect a 0.1 to 10 k

resistor between the DIM+ (Blue) and DIM- (White) wires

Input Frequency

10 k

20 k

30 k

40 k

50 k

60 k

70 k

80 k

90 k

100 k

Open

Percentage of Rated Current

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

95~105%

Analog: Apply 1 VDC to 10 VDC level between the DIM+ (Blue) and DIM- (White) wires

Adjust Voltage

1 VDC

2 VDC

3 VDC

4 VDC

5 VDC

6 VDC

7 VDC

8 VDC

9 VDC

10 VDC

Open

Percentage of Rated Current

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

95~105%

Digital: Apply a PWM signal (100 Hz - 3 kHz) between the DIM+ (Blue) and DIM- (White) wires

Duty Cycle

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Open

Percentage of Rated Current

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

95~105%

Notes:

1

2. The Dimming function will not turn the lighting fixture totally off. For more info on how to do this, please contact the factory