Siemens FS720 Mounting & Installation page 139

6.15.6.2 'FAULT' connector strip
Building Technologies
Fire Safety
The fault output is a potential-free relay contact which, depending on the
configuration, can be used to report fault conditions by interrupting the contact. If
the FN2012 is switched off, the relay contact is deactivated (opened).
The following error messages can be configured by the web interface:
● 'Fatal fault': Ethernet Switch (modular) malfunction
● 'Ring fault': Ring faults are only indicated if the Ethernet switch (modular) has
assumed the 'Redundancy Manager' function
● 'Ring port fault': 'Link down' state on a ring port
Pin Designation
F1 OUT
F2 OUT
F3 IN
F4 IN
Admissible cable cross-section: 0.2...2.5 mm²
F4 F3 F2 F1
IN OUT
Connector
Terminal Plug
Cover cap
(open)
Installing, exchanging and connecting modules
Installing an Ethernet switch (modular) FN2012
Description
Potential-free relay contact 1 (common, normally
open)
Potential-free relay contact 2 (common, normally
open)
Not connected
Not connected
F1
F2
F3
F4
6
139 | 222
A6V10210390_j_en_--
2015-12-15