Owner's Manual
BARFS-1 Rev 2.1.1
29 of 50
4.9
End of Line Module
The end of line module must be terminated on the last device on the zone circuit.
Only one device required for each BARFS-1 system.
The EOL module sets the normal operating voltage of the interconnect line. The
voltage of the interconnect input to the main control module determines the three
modes of operation: normal, alarm or fault.
Interconnect Voltage Threshold:
The following voltages can be used to diagnose a faulty system.
Note: Voltage ranges may vary +/-10%
Table 9 Interconnect voltage threshold
Function
Voltage
P1 Alarm
8.0V to 12V
P2 Alarm
5.1V to 8.0V
Missing Alarm Head fault
2.5V to 5.1V
EOL device (normal)
0.6V to 2.5V
Open Circuit fault
0.0V to 0.6V
Colour coding:
Red wire
+12V
Black wire 0V
White wire interconnect
