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Section 11 • Alarms, Trips, Status Information & Troubleshooting
Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP
Alarm Message Cause(s) Notes
(A001) Alarm:
(A002) Alarm: PLC to Central Comms
Faulted
Loss of Communication with DCS/
Central - Settable Communications
Watchdog Timer Expired. (Alarm
and Revert to Local Selected on
Communication Failure.)
Watchdog Active if Control by
Communications is selected
(A003) Alarm: Blower 1 VFD Comms
Faulted
Loss of Communication with Blower
1 VFD.
(A004) Alarm: Blower 2 VFD Comms
Faulted
Loss of Communication with Blower
2 VFD.
(A005) Alarm: Blower 3 VFD Comms
Faulted
Loss of Communication with Blower
3 VFD.
(A006) Alarm: Blower 4 VFD Comms
Faulted
Loss of Communication with Blower
4 VFD.
(A007) Alarm:
(A008) Alarm:
(A009) Alarm:
(A010) Alarm: Low Suction Header
Pressure
Suction Header Pressure drops
below "Suction Pressure" Low Alarm
Setpoint
Active if monitoring Suction Header
Pressure
(A011) Alarm: High Discharge
Header Pressure
Suction Header Pressure rises above
"Discharge Pressure" High Alarm
Setpoint
Active if monitoring Discharge
Header Pressure
(A012) Alarm: Aftercooler VFD Fault Fault contact open on Aftercooler
VFD
If controlling a VFD type aftercooler
(A013) Alarm: Aftercooler Fan
Starter Fault
Aftercooler Fan is commanded
to run, running confi rmation not
received.
If controlling a step-type aftercooler
(A014) Alarm:
(A015) Alarm: User Defi ned Alarm 1 User defi ned Alarm 1 Message Defi ned in "Device Names"
Screens
(A016) Alarm: User Defi ned Alarm 2 User defi ned Alarm 2 Message Defi ned in "Device Names"
Screens
(A017) Alarm: User Defi ned Alarm 3 User defi ned Alarm 3 Message Defi ned in "Device Names"
Screens
(A018) Alarm: User Defi ned Alarm 4 User defi ned Alarm 4 Message Defi ned in "Device Names"
Screens
(A019) Alarm: User Defi ned Alarm 5 User defi ned Alarm 5 Message Defi ned in "Device Names"
Screens
Table 11-1. Alarm Listing
Alarm Listing
The following table shows all possible alarms and trips and possible causes. Some alarms and trips are application
specifi c, and do not apply unless a specifi c option is selected.
To reset alarms or trips press the “Alarm Reset” Button on the overview screen. If the condition is cleared, the alarm
will reset. If the condition is not cleared, the alarm will remain active.
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