Siemens FDCIO223

Structure and function
29
Building Technologies
009122_e1_en_--
Fire Safety
2015-10-06
3.4.1.2 Detector line design
Permissible cable types
The detector line is compatible with the following cables:
 Shielded cables
 Unshielded cables
The table below shows the permissible cable values:
Cable values
Detector line without safety
barrier
Detector line with safety
barrier
Inductance Max. 5 mH Max. 5 mH
Capacitance Max. 1 µF Max. 4 µF
Resistance Max. 150 Ω Max. 50 Ω
End-of-line (EOL)
One of the following must be used to terminate the detector line:
 Bidirectional 20 V voltage reference diode (tolerance max. ±5 %); 1.5 kW pulse
power
 EOL22(Ex); absolutely essential with intrinsically safe ex detectors on ex lines
above safety barrier SB3!
Non-assigned inputs/outputs do not require an end-of-line (EOL).