IP3112-Bxxx, IE3112 Signal Connection
4 Channel Analog Input 0 to 20 mA
The signal is measured using a differential signal. If two lines are not available for differential measurement at your sensor (e.g. 24 V GND and signal), then GND must be short-circuited to Input.
Pin 5 (shield) is capacitatively coupled to the chassis of your Fieldbus Box.
Supply voltage
US - supplies the electronics for the fieldbus and for the sensor. It is electrically isolated from UP.
UP - Is not required for the function of the module, and does not have to be fed in.
If you use UP to pass the power on, and you connect a module in which US and UP are not electrically isolated (e.g. any digital module) then the electrical isolation is removed by the downstream connection.
LED indicators - meanings
There is a green Run LED and a red Error LED for each channel.
The Run LED illuminates when data is being transferred to the D/A
converter. The red Error LED indicates that there is an error
(broken conductor, measured value outside the range).
The device is functioning correctly if the Run LED is lit and the
Error LED is unlit.
