D-9105RExd
Digital Flame Proof Reflective Beam Detector
Installation and Operation Manual
The Intelligent Solution
18
found to be contaminated, please clean it with soft cloth and alcohol.
Avoid scratching the surface. Do not clean the surface using water
or other chemicals. After cleaning, please commission the detector
again to make it work in normal standby state.
Common problems and repair methods are as shown in Table 1.
Table 1
Problems
Reasons
Repair Methods
Working LEDs
not lit after
power up.
a) 24V power off
b) Working LEDs damaged.
c) Transient suppressor VD12 damaged.
d) DiodeVD1, VD2, VD10, VD11
breakdown resulting in short circuit
with ground.
e) N1, N2 damaged.
f) The flexible cable inside was not
connected, or not connected correctly.
If the problems are
mentioned in a) ~ e) ,
replace the component
with problem.
If in f) connect again in
right way.
Fault LED
constantly
illuminates
after power up
a) Device type read by programmer is
not 51 or 52.
b) The optical pathway is not well
aligned.
a) Correct the device type.
b) Commission the
detector again. If
commissioning fails for
3 time, please return the
detector for repair.
Reports loop
fault after
power-up
a) Diode VZ1, VZ2, VD3 or VD4 is
broken, and is shorted to earth.
b) TVS diode VC13 is damaged.
Commission once more.
FACP reports
detector fault
after
registration.
The detector does not enter normal
operation state.
Re-commission the
detector.
The FACP
does not
register the
detector after
power-up
a) Loose connection with FACP loop.
b) 24V power is not applied.
c) N3 or N4 is damaged.
d) The flexible cable inside the detector
is not connected or not connected
well.
e) N1 or N2 is damaged.
Replace the faulty
component, re-connect the
flexible cable or re-register
the detector.
Green LED
flashes after
power-up
despite
adjustment
a) Transmitting diode or circuit is
damaged.
b) Receiving diode or amplifying circuit
is damaged.
Replace the faulty
component.
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