Connections
The connection of the I/O channels is carried out using the 40 terminals of the I/O terminal unit.
I/O modules can be replaced without re-wiring the terminal units.
The terminals 1.8 to 4.8 and 1.9 to 4.9 are electrically interconnected within the I/O terminal unit
and always have the same assignment, irrespective of the inserted module:
Terminals 1.8 to 4.8: process voltage UP = +24 V DC
Terminals 1.9 to 4.9: process voltage ZP = 0 V DC
1
I/O bus
2
4.0 - 4.7: Connected with UP (switch) -> Input;
Connected with ZP (load) -> Output
3
switchgear cabinet earth
The assignment of the other terminals:
Device specifications
I/O modules > Digital I/O modules
2022/01/31
3ADR010278, 3, en_US
293