4100ES-S1 Programming Guide Document: LT0400
AS1668 Fan Controls
10-12
10.5.8 FAN Fault Conditions
This equation sets the amber LED (fault) to ON when the fan control relay is set to operate
the fan but the airflow indicator does not report that air is flowing, when the fan control relay
is set to stop the fan but the airflow indicator reports that air is flowing or a fault signal is
received from the Mechanical Services Board.
[INPUTS]
STATUS ON
M1-5-1 | MRELAY | RELAY | FAN 1 START RELAY
AND NOT STATUS ON
M1-5-2 | MTSENSE | UTILITY | FAN 1 RUN INDICATION
SAVE 1
STATUS ON
M1-3-0 | RIAM | RELAY | FAN 1 STOP RELAY
AND STATUS ON
M1-5-2 | MTSENSE | UTILITY | FAN 1 RUN INDICATION
OR RECALL 1
DELAY ANALOG
A278 | Analog Timer | ANALOG | TIMER | FAN FAULT DELAY - FAN 1
A260 | Analog Timer SetPoint | ANALOG | ANALOG | FAN FAULT DELAY SETPOINT
OR STATUS ON
M1-7-2 | MINPUT | TROUBLE | FAN MECH BOARD FAULT
[END INPUTS]
[OUTPUTS]
TRACK ON PRI=9,9
P1265 | DIGITAL | TROUBLE | FAN #1 FAULT
[END OUTPUTS]
To Next Page
Loading...
Need help?
General
