Connecting
6.4 Signaling contact
SCALANCE SC-600
56 Operating Instructions, 10/2021, C79000-G8976-C453-04
6.4 Signaling contact
Information on the signaling contact
• The signaling contact is a floating switch that signals error states by interrupting the
contact.
• The signaling contact must be operated within the range of the operating voltage.
• If an error occurs, the signaling contact opens. In normal operation, the signaling
contact is closed.
• When you switch on the device, the signaling contact is closed for about 30 ms and is
then opened again.
• The signaling contact is connected using a 2-pin plug-in terminal block (spring-
loaded terminal). The terminal block ships with the device and can also be ordered as
a spare part.
• Note the wiring rules.
Damage due to voltage being too high
The signaling contact can be subjected to a maximum load of 100 mA (safety extra-low
voltage SELV, 24 VDC).
Higher voltages or currents can damage the device.
Configuring signaling contact as digital output
The signaling contact can be configured as digital output via the WBM/CLI. In this case,
the signaling contact is closed.
The digital output is opened as soon as you enable one of the following events for the
digital output in the WBM under "Events > Configuration":
• Fault State Change
• Digital Input
• VPN Tunnel
To open the signaling contact again, you must disable all events.
You will find information on configuration in the WBM or CLI configuration manual.