wiring the analog inputs and analog outputs of ABB DA501 expansion module
Is the AI- , the AO- and the ZP internally connected so its the same no matter where i put the wires?
Thank you in advance
The manual 3ADR010121 clearly describes how to use analogue channels of DA501.
The right connection when these channels are used for current signals:
- AI current: AIx+ (+) and ZP (-)
- AO current AOx+ (+) and ZP (-)
The terminals AI- and AO- should be used as (-) for voltage signals. AI/O- and ZP are not connected internally.
ZP is process 0V (-24VDC):