For internal reference voltage mode:
REF OPTION setting: J2 - IN shorted and J1 –EX disconnect.
Terminal block VCC connect power supply +12V DC.
Terminal block GND connect power supply ground(neutral, 0V) and input signal ground.
Terminal block REF not connect any circuit and wires.
Terminal block TRIG connect input signal.
Reference voltage adjust: adjust the VR1 potentiometer, and use voltage-meter test terminal block
REF OPTION J1 pin position voltage, you can got 0 ~ 10V reference voltage.
When the input voltage > reference voltage, relay switch Cto NC disconnected and Cto NO
connected. when the input voltage < reference voltage, relay switch Cto NC connected and Cto NO
disconnected.
For external reference voltage mode:
REF OPTION setting: J2 - IN disconnect and J1 –EX shorted.
Terminal block VCC connect power supply +12V DC.
Terminal block GND connect power supply ground(neutral, 0V) and input signal ground.
Terminal block REF connect external reference voltage.
Terminal block TRIG connect input signal.
