ABB AI523 - AI531 Process Supply Voltage Connection; AI531 Analog Inputs Wiring

3.4.1 Process Supply Voltage
CAUTION!
The process supply voltage must be included in the earthing concept (e. g.
earthing of the minus pole).
3.4.2 Inputs
AI531
Connection > Inputs
2019/11/15 3ADR024117M02xx, 11, en_US 29