NOTICE!
Risk of damaging the PLC modules!
Overvoltages and short circuits might damage the PLC modules.
– Make sure that all voltage sources (supply voltage and process supply
voltage) are switched off before you begin with operations on the system.
– Never connect any voltages or signals to reserved terminals (marked with
---). Reserved terminals may carry internal voltages.
The following figure shows the connection of the module:
1 I/O bus
2 Switchgear cabinet earth
NOTICE!
– If the relay outputs have to switch inductive DC loads, free-wheeling diodes
must be circuited in parallel to these loads.
– If the relay outputs have to switch inductive AC loads, spark suppressors
are required.
I/O modules > Digital I/O modules
2022/01/31 3ADR010278, 3, en_US 343
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