Siemens FS20 - Page 77

Mounting and installation of the compact control panels
Periphery board (2
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loop)
5
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354
Building Technologies
008851_s_en_
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Fire Safety
2016
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01
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27
5.3.2.3 X7 RT alarm and RT fault changeover contacts
Pin Designation Description
6 FAU_NC ↑ RT fault ↑ normally closed contact
5 FAU_COM RT fault center tap (common)
4 FAU_NO RT fault ↑ normally open contact
3 AL_NC RT alarm break contact (normally closed)
2 AL_COM RT alarm center tap (common)
1 AL_NO RT alarm make contact (normally open)
Admissible cable cross-section: 0.2…1.5 mm²
1 Remote transmission
FAU_… Diagram of relay in ↑ normal operation = contact 5/4 closed
AL_… Diagram of relay in normal operation = contact 2/3 closed