24 V Dc Signaling Contact - Siemens SCALANCE XR-300M Operating Instructions Manual

● The connection or disconnection of a communication node on an unmonitored port does
not lead to an error message.
● The signaling contact remains activated until the error/fault is eliminated or until the
current status is entered in the fault mask as the new desired status.
5.4.2

24 V DC signaling contact

24 V DC signaling contact
Note
Supply voltage at signaling contact for XR-300M and XR-300M-PoE
At the signaling contact, there is always a voltage of 24 VDC even if the device can be
operated with 100 to 240 VAC.
● The signaling contact is connected to a 2-pin plug-in terminal block.
The signaling contact can be subjected to a maximum load of 100 mA (safety extra-low
voltage SELV, 24 V DC).
Table 5- 1
Pin number
Pin 1
Pin 2
To wire up the signaling contact, use a copper cable of category 18-12 AWG or cable with a
cross-section of 0.75 to 2.5 mm².
SCALANCE XR-300M
Compact Operating Instructions, 05/2016, A5E02661171-11
Pin assignment of the 24 VDC signaling contact
Assignment
F1
F2
Connecting
5.4 Signaling contact
43