Siemens FC922 User Manual

FS20 Marine Fire Detection Control Panel
90
Siemens Industry, Inc. A6V10519176_enUS_b
Building Technologies Division
Wiring Diagram RS-485 Network:
Class B (style 4)
Class B (style 4)
Wiring diagram FCA2016-U1 class B (style 4)
 RS-485 Network, supervised for ground fault, open and short circuit
 Class B circuits (style 4) must not exceed a maximum of 65 ft
 Class B circuits (style 4) must be terminated with 120 Ω
 Observe polarity for circuits A and B
 Power limited accessory to NFPA 70 / NEC 760 / Subchapter J of
Title 46 of the Code of Federal Regulations
 Ground faults detected at <1 kΩ
 All wiring in accordance of article 760 of NEC or local building code
 Class A circuits of style 6 must not exceed a maximum of 3940 ft
 Observe polarity for circuits A and B
 Ground faults detected at <1 kΩ
For further details of wiring for the modules for the RS-485 circuit, are located in the descriptions
of the corresponding modules.

Siemens FC922 Specifications

General

Brand	Siemens
Model	FC922
Category	Control Panel
Language	English