Thomas Research Products • 1225 Bowes Rd • Elgin, IL 60123 • T 847-515-3057 • F 847-515-3047 • www.trpssl.com

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Dimming Control Details

Notes:

1. For the driver to operate properly, the load voltage must be maintained above the minimum voltage threshold

(approx. 33% of the max. output voltage for any given model).

2. If the dimming voltage is varied from 10V down to 0V, the output current can be varied from 100% Io down to 20-30% Io.

3. Do not connect the GND of dimming to V(-) or earth ground; otherwise the LED driver will not work properly.

4. If dimming is not required, connect yellow and purple leads together to get full current output (100%).

5. It is permissible to parallel driver outputs to achieve higher output currents. However, when doing so, it is not permissible to connect

dimming control leads in parallel.

6. It is permissible to connect dimming control leads of multiple drivers in parallel to allow them to operate from a single 0-10V control.

However, when doing so, it is not permissible to interconnect output leads (red and black) across drivers.

Parameters

Minimum

Typical

Maximum

10V output voltage

9.8 V

10 V

10.2 V

10V output source current

-10 mA

—

2 mA

Absolute maximum voltage on the 0-10V input pin

-2 V

—

15 V

Source current on 0-10V input pin

0 mA

—

1 mA

The dimmer control is operated from either a potentiometer or from an input signal of 1 – 10 Vdc.

Recommended implementations are provided below.

Option 1 - Potentiometer Control

20K

1-10V Input (Purple)

GND (Green)

10V Output (Yellow)

1-10V Input (Purple)

GND (Green)

1-10Vdc V

Option 2 - DC Input

TRC-040SxxxDS

TRC-040SxxxDS

Output Current / Potentiometer

0%

20%

40%

60%

80%

100%

0

1

2

3

4

5

6

7

9

8

10

Output Current / Dimming Voltage

0%

20%

40%

60%

80%

100%

0

1

2

3

4

5

6

7

9

8

10

TRC-040 Series