Build your own Voltage Controlled Relay (VCR)

 

Input select 0-5VDC, 0-10VDC or 0-XVDC (OEM), 4-20mA, 0-20mA; Where XVC custom input voltage see example B for 0-30VDC.

 

 

   

 

Input level trip set point multi-turn trimmer adjustment (via P1).

Differential set point multi-turn trimmer adjustment (Via P2). 

Set Input select to 0-10V

LED, relay on indicator.

 

 

 

 

1. Input level set point multi-turn trimmer adjustment (via P1).

2. Differential set point multi-turn trimmer adjustment (Via P2).

3. Input select: 0-5VDC, 0-10VDC, 4-20mA

4. LED, relay on indicator.

 

Example A:

 

Control electric motor via the relay with input voltage greater then 4VDC. When the input voltage drop below 2VDC (equal to 50% of 4VDC trip point) turn off the relay therefore the motor.

 

* Set Input select to 0-10V

 

* Set Input trip level: Adjust the trip set point multi-turn trimmer adjustment (via P1) to 4VDC. Measured between ground to test point 1 (TP1).

 

* Set Input Cut out level: Adjust the differential set point multi-turn trimmer adjustment (Via P2) to 2VDC. Measured between ground to test point 2 (TP2).

 

Mount, connect wires and you done.

 

 

 

 


Example B:

 

Monitor 24V battery 

 

 

1. Input level set point multi-turn trimmer adjustment (via P1).

2. Differential set point multi-turn trimmer adjustment (Via P2).

3. Input select: 0-5VDC, 0-30VDC (OEM custom board), 4-20mA

4. LED, relay on indicator.

 

 

* Set Input select to 0-30V (As shown with OEM board modify to input of 0 to 30VDC). 

Please be advised that Enclosure, Din-Rail mount and mounting screws and  Multi-turn trimmers options are sold separately.

 

* Set Input trip level: Adjust the trip set point multi-turn trimmer adjustment (via P1)

 

* Set Input Cut out level: Adjust the differential set point multi-turn trimmer adjustment (Via P2)

 

Mount via DIN-RAIL (option), connect wires, and you done.