Notifier AIM-200, Руководство пользователя, Страница: 48 / 60

48 Document 15949 Rev. E 4/12/95 P/N 15949:E
Loop Fault LED and RESET
NFPA Style 6 field wiring may be used to ensure full operation in the event of a single break
in the loop wiring. When set for Style 6, the AIM-200 latches a wire failure and then must be
manually reset to re-test and clear the fault. When the loop fault is latched on, the AIM-200
turns on the yellow LOOP FAULT LED and reports trouble for all zones that are not in alarm.
If there is no alarm, “LF” is placed on the digital display. The RESET switch or the System
RESET clears the latch. If a loop fault still exists, the trouble will then resound and re-latch.
T-tap wiring is not allowed in the Style 6 configuration. Field wiring must be returned to the
AIM-200 terminal block as illustrated in Figure 3-7.
ON-LINE LED and SKIP Switch
The green ON-LINE LED will flicker when communications occur on the interface to the
CPU. The SKIP switch is used in programming the AIM-200. (See the
Programming the
AIM-200 section of this document.)
ENTER LED and Switch
This LED and switch are used in programming the AIM-200 (see the Programming the
AIM-200 section of this document).
Display Status LED and Switch
This LED and switch are used in programming the AIM-200 (see the
Programming the
AIM-200 section of this document).
Automatic Detector Test
The AIM-200 automatically test all detectors on its SLC loop. This test is similar to activating
a detector with a test magnet.
The module periodically commands each detector, one at a time, to respond with an appro-
priate alarm-like signal (pulse on the SLC loop). If the proper response is not returned, the
AIM-200 will register a trouble condition for that detector. The trouble LED of the zone which
that detector is mapped to will illuminate and the piezo will sound.
To determine which detector has failed the test, use the Display Status function. The status
of the faulty detector will be indicated by a “U” (Unsatisfactory test) in the right digit of the
display
(
PU
,
IU
, or
HU
)
.
The RESET switch on the CPU must be pushed to clear the trouble status from the device.
Unless the detector has been repaired or replaced, the AIM-200 will again register a trouble
condition with the next device test. Each detector will be tested at least every 24 hours.
The automatic test is not conducted for modules.
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