E3M171 Line Module "Interactive" Ex Detectors - Siemens Cerberus CS1140 Manual

E3M171 Line module "Interactive" Ex Detectors

21 E3M171 Line module "Interactive" Ex Detectors
21.1 Overview
21.2 Key data
21.3 Special functions
90
Building Technologies
Fire Safety & Security Products
Line module for interactive Ex detectors (and standard detectors)
I-Bus module with line processor and independent emergency operation proces-
sor
Designed for 1 stub line
Line inputs protected against over voltage
The ground fault monitoring is disabled, because Ex barrier must be grounded
on the plus conductor
Line is galvanically isolated from the control unit
Card format 100 mm x 200 mm
I-Bus address is set at programming switch "S3"
Addresses
Number of wires
Twisted cable
Line resistance (total)
Line capacitance (from SB3 on)
T-branch
Quiescent current at 24 V
1) Limitations –> see document 001508
2) With MICC max. 1000 m from the control unit to the last detector, with RADOX
max. 2000 m
3) –> see document 1204
Terminal block X20 (20 terminals)
mounted on module chassis
–
for the connection of the prefabricated cable to connection level, or
–
for direct connection of the periphery
–
Card chassis
– mounted on module chassis
Emergency operation
Alarm evaluation upon "Emergency operation" via Emergency operation proc-
–
essor and "Emergency operation" in the detector
Upon emergency alarm, control console B3Q... gives a "combined alarm" with
–
flashing response indicator at the detector
Upon line short circuit and failure of the line processor there is no "Emergency
–
alarm"
Mimic display output (connectors ST10) only active with emergency alarm
–
...32 (normal and/or Ex detectors) 1)
2
necessary
...70 Ω 1) 2) 3)
...70 nF 1) 2) 3)
yes
70 mA with 32 detectors
(50 mA without detector + 0.5 mA per D-Bus element with IMK=1)
001260_k_en_--.doc
02.2005