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Connection
6.2 Signaling contact
SCALANCE X204RNA SCALANCE X204RNA EEC (PRP)
40
Operating Instructions, , C79000-G8976-C294-03
6.2
Signaling contact
Signaling contact
The signaling contact (relay contact) is a floating switch with which error/fault states can be
signaled by breaking the contact.
The signaling contact is connected to a 2- or 3-pin plug-in terminal block. Usable cable
cross-section 0.25 to 2.5 mm
2
. Tightening torque 0.57 - 0.79 Nm (5 - 7 in.lb.).
Table 6- 2
Pin assignment
Pin number
Pin assignment of the SCALANCE X 204RNA
Pin assignment of the SCALANCE X 204RNA EEC
Pin 1
F1 (NO contact / NC contact if a fault occurs)
F1 (NC contact / NO contact if a fault occurs)
Pin 2
F2
F2 (pole terminal)
Pin 3
-
F3 (NO contact / NC contact if a fault occurs)
The following errors/faults can be signaled by the signaling contact:
●
The loss of a link on a monitored port (see section "Setting the fault mask" (Page 27)).
●
The failure of one of the two redundant power supplies (X204RNA only).
●
The loss of the entire power supply
●
Internal error
●
Incompatible C-PLUG was inserted.
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 applied as the new desired status using the button.