Document: LT0400 4100ES-S1 Programming Guide
AS1668 Fan Controls
10.5.5 S/A DETECTOR ACTIVE
The S/A detector is added to the zone list.
This equation uses negative logic - all operations are triggered when the S/A Detector is not
active - it has cleared of smoke. This is followed by the restart delay OR if the detector is
isolated. The output uses TRACK OFF to work with the input conditions.
[INPUTS]
NOT STATUS ON
L345 | LIST | MIXED | S/A DETECTOR FAN #1
DELAY ANALOG
A262 | Analog Timer | ANALOG | TIMER | S/A DETECTOR RESTART DELAY-FAN 1
A261 | Analog Timer SetPoint | ANALOG | ANALOG | S/A DETECTOR RESTART DELAY SETPOINT
OR STATUS ON
P685 | DIGITAL | SUPERV | FAN #1 S/A DETECTOR
[END INPUTS]
[OUTPUTS]
TRACK OFF PRI=9,9
P885 | DIGITAL | UTILITY | S/A OR SPF FAN 1
[END OUTPUTS]
10.5.6 Trigger FAN ON
This equation sets the fan control relay to operate the fan when A/C Trip (P521) is ON, or
when the ‘manual-start’ is operated. The relay is prevented from operating if the Stop Relay
is active (from smoke in Duct Detector) and the control is in Auto position.
[INPUTS]
STATUS ON
P521 | DIGITAL | UTILITY | A/C TRIP
AND NOT STATUS ON
M1-3-0 | RIAM | RELAY | FAN 1 STOP RELAY
OR STATUS ON
P1201 | DIGITAL | UTILITY | FAN #1 MANUAL START
[END INPUTS]
[OUTPUTS]
TRACK ON PRI=9,9
M1-5-1 | MRELAY | RELAY | FAN 1 START RELAY
[END OUTPUTS]
10.5.7 Trigger FAN OFF
This equation sets the fan control relay to stop the fan when smoke is detected by the Duct
Detector, or when the manual-stop is ON.
[INPUTS]
STATUS ON
P885 | DIGITAL | UTILITY |S/A OR SPF FAN 1
AND NOT STATUS ON
P1201 | DIGITAL | UTILITY | FAN #1 MANUAL START
OR STATUS ON
P1202 | DIGITAL | UTILITY | FAN #1 MANUAL STOP
[END INPUTS]
[OUTPUTS]
TRACK ON PRI=9,9
M1-3-0 | RIAM | RELAY | FAN 1 STOP RELAY
[END OUTPUTS]
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