Version 03
– 30.10.2019
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6. SFCP Rail Technical Specification
Power Supply Specification
Rated Voltage
11 to 32 Volt DC
Battery Voltage
This means that if the system normally uses a 12VDC input, the battery should
also supply 12VDC input, or if the normal voltage is 24VDC, the battery should
also supply 24VDC.
Maximum Quiescent Current Ign. Off
26 mA (set up with 4 detectors an the zones, without external load)
Maximum Quiescent Current Ign. On
41 mA (set up with 4 detectors an the zones, without external load)
Maximum Quiescent Current
Battery mode
25 mA (set up with 4 detectors an the zones, without external load)
Maximum Alarm Current
75mA (set up with 4 detectors on the zones, without external load)
Extinguish Current
The fire-output signal to the extinguisher(s) will be 1A to 4A depending on voltage
and number of suppressors (Stat-X = 1.8 Ohms nominal each unit), up to 2 units
on 12V, 4 units max on 24V. Upon extinguisher activation, the input power is
latched to the fire-output. Connect in series with bi-directional catch diodes
across each element (see Stat-X manual).
Extinguish Monitoring
End of Line Resistor and Diode
10k Ohms and suppressor-diode 2A and 60V by 24 VDC input voltage
Extinguish Monitoring Current
In normal state (no fire) a monitoring current of <4 mA is supplied to the
extinguishers.
Max. zone Output Voltage
The zones output is the input voltage (-0.6 volt, power multiplex spec.).
Max. zone Output Current
A current fuse-limited at 50 mA.
Zone Alarm Condition Threshold
>190 Ohm and <1k2 Ohm for more than 1 second.
When a low resistance (less than 50 Ohms) linear heat cable is used, a 1 k
Ohms resistor need to be installed in series at the begin of the loop on one of the
wires.
Zone Fault Condition Threshold
<190 Ohm or >10k Ohm.
– for 1 fire switches connected on one zone
<190 Ohm or >27k Ohm.
– for 2 fire switches connected in parallel on one zone
Zone End Of Line Resistor
10k or 30k Ohms
– 1 or more fire switches
External Hold-off
External Release Extinguishing
Alarm Condition Threshold
>190 Ohm and <1k2 Ohm for more than 1 second.
External Hold-off
External Release Extinguishing
Fault Condition Threshold
<190 Ohm or >12k Ohm.
External Hold-off
External Release Extinguishing
EOL-resistor
10k Ohms
Alarm Output Voltage
Same as input voltage (11 to 32 Volt DC)
Alarm Output Current
Max. 2A
VFC Output Relay Maximum Load
1A @ 24 Volt DC
Fire Output Relay Maximum Load
1A @ 24 Volt DC
Fault Output Relay Maximum Load
1A @ 24 Volt DC
