3 wire 0-20mA sensor input on MC4x

Kevin Arscott 2 years ago in Master modules / MC4x updated by Ulrik Zakariasson (Software development) 2 years ago 3

The installation manual states an example for a 2 wire 0-20mA input into the controller, but there is no reference to a 3 wire input. Are these supported? I'm assuming it will be the same connections just the sensor ground (which does not include the signal) will go to chassis or vref -ve? Can anyone confirm?

Can anyone advise whether it is possible to connect 3 wire to MC4x controllers please?


Most of the current sensors have 3 wires

Just connect the power to the + and gnd connection and the signal wire to the iqan input

You do not need the vref- because the sensor normally has a controlled current output

Used it with pressure sensors.....works fine