4100U-S1 Programming Guide Document: LT0400
Appendices
Page 12-14 15 December 2010 Issue 1.4
12.3.6 Warning System Isolate
The Warning System Isolate LED indicates that the Warning System Output is Isolated.
Pressing the Warning System Isolate button toggles the isolation of the output.
SIG5 (NAC 3) on the SPS is activated when an alarm is present and the warning system is
not isolated.
References
Push Button Mode set to “TOF” Mode
Point Address: 0-5-5 Warning Sys Isolate Button
P519 Warning Sys Isolate Status
0-5-10 Warning Sys Isolated LED
L257 General Fire Trip List
SIG5 Warning Sys Isolate NAC 3 on SPS Power Supply
Equations:
3-6 Warning System Trip
[INPUTS]
STATUS ON
L257 | LIST | DPSEUDO | GENERAL FIRE TRIP LIST (ACF ISOLATABLE)
AND NOT STATUS ON
P519 | DIGITAL | SUPERV | WARNING SYSTEM ISOLATE
[END INPUTS]
[OUTPUTS]
TRACK ON PRI=9,9
SIG5 | SIGB | SIGNAL | WARNING SYSTEM
[END OUTPUTS]
12.3.7 Clean up Equations
System Startup Initialization
This equation initializes the state of P204 to OFF during start up to prevent the alarm
silenced LED from being turned on during start up.
3-18 prevent "alarm silenced" LED operating
[INPUTS]
STATUS ON
A34 | ANALOG | TIMER | SYSTEM STARTUP PULSE TIMER
[END INPUTS]
[OUTPUTS]
HOLD OFF PRI=2,2
P204 | DIGITAL | UTILITY | SIGNALS SILENCED
[END OUTPUTS]
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