Example: Dual-Channel Input Devices, Unchecked - Pilz PSS Series Installation Manual

Connecting the Inputs and Outputs

Example: Dual-channel input devices, unchecked

Features:
• This type of connection is mainly used for signal inputs with frequent
operation.
• The functionality of both input device channels should be monitored in
the user program via feasibility checks (see example in the Programming
Manual).
• The possibility of short circuits occurring between adjacent connector
terminals cannot be eliminated. For this reason, the two identical
(homogenous) channels on an input device must not be connected to
adjacent inputs.
• If you are using input devices with different (diverse) channels, adjacent
inputs may be used. Short circuits will be detected in the application
program via the feasibility check (see example in the Programming Ma-
nual).
CAUTION!
It will not be possible to detect short circuits in the cable between the input
device/input and the L+ line, nor short circuits between several input
devices. Depending on the type of input device connected, this could
create a risk to both personnel and machinery (e.g. emergency stop). You
should always ensure that the unit is suitably wired to eliminate the risk of
short circuits.
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Installation Manual: PSS 3056 Series