Ravel RE-127 Series, Инструкция по установке, пусконаладке и эксплуатации

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47
Indication Root Cause Remedy
There is no
indication on
the panel No power to the Panel Check AC power and
Standby power.
The panel
does not
repeats the
main panel RS485 Communication
cable connected in
wrong way. Check the RS 485
Communication cables A
and B are connected in
the right way.
Sounder fault
indication There is no proper
connection in the
sounder
Or loop Fault.
If there is no sounder
connected to the output,
check if EOL resistor
connected there or not.
Check loop wiring for short
/ open using a meter.
If sounder is non-polarized,
then ensure each
sounder’s +ve loop is
connected to 1N 4007
diode’s cathode and the
sounder –ve loop
connected to the anode
of 1N 4007. Connection Details for Non Polarized
Sounder
Hooter
(NAC)
+
+
_ _
Diode
IN4007
E
O
L