ANNEX B - CCTV DETAILS
62
The OPM condition field reports the result of the test whether initiated manually or automatically.
This is in addition to the fault being indicated on the fault LED and signalled on the outputs as
described in Section 5.
B 1.4 HARDWARE FAULT STATE
If a hardware fault is found in the detector then it will be reported by a message displayed in the
middle section of the text overlay. This is in addition to the fault being indicated on the fault LED
and signalled on the outputs as described in Section 5.6 and 5.7.
Fig. B-4 shows the position of data fields on the hardware fault text overlay.
The top of the fault state overlay gives the basic identity and location information which are
displayed as described for the quiescent state. The log counter will be displayed when an event
occurs to show where it is recorded in the internal log.
The next line displays the device serial number. This is the serial number as etched on the front
plate of the detector and is entered during manufacture, it cannot be changed. This is followed by
one or two lines describing the fault.
OPM Condition Messages Description and How to fix it
DIRTY
The sensing window is dirty and must be
cleaned soon.
BLOCKED
The sensing window is completely blocked and
must be cleaned immediately.
LAMP FAULT
Both lamps have failed and the detector cannot
perform an OPM test.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
1
2
3
4
5
6
7
8
9
10
11
12
FV
lame ision
< L O C A T I O N AND IDENTITY >
<Ser. No. nnnnn/yy>
<FAULT MESSAGE >
<D>
<W>
<M>
<O>
< OPM: CONDITION>
< Log Counter>
<FAULT MESSAGE >
Fig. B-4 Hardware Fault Overlay
www.acornfiresecurity.com
www.acornfiresecurity.com
To Next Page
Loading...