Connection of the digital inputs
The digital inputs can be used as source inputs or as sink inputs.
NOTICE!
Risk of malfunctions in the plant!
A ground closure, e. g. caused by a damaged cable insulation, can bridge
switches accidentally.
Use sink inputs when possible or make sure that, in case of error, there will be
no risks to persons or plant.
The following figure shows the electrical connection of the digital inputs to the PM50xx pro-
cessor modules:
Electrical connection of digital inputs (sink
inputs)
Electrical connection digital inputs (source
inputs)
Processor modules > PM50xx
2021/06/29 3ADR010635, 2, en_US 83
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