Environmental Monitoring System (EMS-01) Instruction Manual
24
Test 4 (Engineering Mode) is performed as follows:
1.
Trigger
Cable Fault Mode
(Test 2) or
Alarm
Mode
(Test 3).
2.
Hold the
Mute and Reset
buttons together
for
5 seconds
to enter
Engineering
Override Mode
(
section 5.4
). All LED’s will
flash while entering Engineering Mode.
3.
Once in Engineering Mode,
the LED’s
will
flash sequentially to show the
24-hour
timer
has started.
4.
Confirm all output relays have latched
correctly with use of a digital multi-meter.
5.
The unit will return to
Monitor Mode
after
the 24-hour timer has elapsed. To exit
manually during this time, hold the
Mute
and Reset
buttons together to return to
Monitor Mode.
6.
Confirm all output relays have unlatched
correctly with use of a digital multi-meter.
5.6.2
Test a Cable Fault (leader and sensor cables)
If a
cable break
is detected and a
sensor cable
is used, it is possible to determine whether there is a
problem with the sensor cable or the leader cable.
Determine if there is a fault with the sensor or leader cable as follows:
1.
Place a
resistor
across the
sensor
terminals
in the panel to see if the fault
disappears. If so, the problem is somewhere
on the cable run.
2.
Remove the
End of Line (EOL) terminating
resistor
, separate the leader cable from
the sensor cable, and connect the EOL
terminating resistor into the leader cable.
3.
If the fault clears from the panel, fault is
with the sensor cable. Otherwise, fault is
with the leader cable.
