GE FHSD720C Installation And User Manual page 29

GE Security FHSD700C Series Product Guide
OPCODE
This is the Operator Access Code (or Access Code Level 1 or 2) that must be entered to enable
ISOLATE, SOUNDER SILENCE and RESET buttons. The default value is 0. It may be changed within
the range 0 to 999, but 260 and 693 should be avoided as these are reserved for Level 1 and 2 access
codes. A zero value removes the need to enter an Access Code.
ENDSCTR
The default value is 4, 6, or 15 depending on the detector type (FHSD724DC, FHSD726DC, or
FHSD7215DC). If fewer sectors are to be sampled, ENDSCTR should be set accordingly and the
unused sample inlets should be capped or, for the FHSD7215DC, looped to one another. Those used
should be a contiguous set beginning from the first inlet. Please refer to Connection of Sampling Tubes
on page 14 for instructions.
DENSLOG
If there is a change in density greater or equal than this value, an entry in the log is made of the new
value.
TRCLTCH (not on FHSD720C or FHSD721C / FHSD721DC), ALTLTCH, ACTLTCH, F1LTCH,
F2LTCH
Defines whether Alarm events are to be latched. If not latched, the Alarm condition will clear as soon as
the cause disappears. If latched, the system must be reset to clear the Alarms. Note that the ACCEPT
or SOUNDER SILENCE buttons may be used to stop the internal sounder, and the ISOLATE button
may be used to disable all Alarm relays. The default is 1 (Latching).
FLTLTCH
A FAULT condition will exist if any specific fault within the system is detected. It will be accompanied by
closure of the Normally Closed contacts of the FAULT relay, and illumination of the GENERAL FAULT
indicator. If it is made Latching, the relay contacts and indication will remain even after the originating
Fault condition has ceased, and the system must be reset to clear FAULT. The default is 1 (Latching).
TRCRLY (not on FHSD721C / FHSD721DC)
Optionally, the ALERT relay can be re-assigned to activate when the detector goes into TRACE mode.
To do this set to 1. The default is 0. The alert relay will then act as a Trace relay.
REFCOMP, REFDEL
When referencing is used, REFCOMP is the proportion of the Reference Density Value that is used to
back off the Sample Density. The product is subject to a maximum of 0.05% back-off value. It is applied
progressively over time, reaching its final value after the Reference Delay, REFDEL. This is not
applicable to the standard product FHSD720C, FHSD721C / FHSD721DC, FHSD724DC, FHSD726DC,
or FHSD7215DC.
FLOWDEL
Flow Fault Delay. The time period in seconds for which a Flow Fault must be sustained before
registering as a fault. The default is 5 seconds. The range is 1 to 60 seconds.
FLOWHI, FLOWLO
High and Low limits set for Flow Fault. Note that Flow readings are normalized to 100%. All systems
must normalized at the installation stage.
FLOWLOG
If there is a change in flow greater or equal than this value and there is currently a flow fault, an entry in
the log is made of the new value.
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