TP-6714 4/10 39Section 3 Operation
3.13 Warnings and Faults
When a fault exists, the System Alert indicator flashes, a
designated output and the common fault output are
turned on, and an appropriate message is displayed to
indicate the fault. See Figure 3-18 for the location of the
System Alert indicator.
GM46892
1. System Alert LED
1
Figure 3-18 Fault Indication
ATS warnings and faults are shown in Figure 3-19.
There are three types of warning/fault conditions:
Warning. Warnings automatically reset with a source
availability change or a transfer request.
Fault Requiring Manual Reset. Under these
conditions, normal ATS operation is halted. Active
modes are turned off. If the contactor is in the preferred
source position, the engine cooldown time delay
executes and the engine start contacts open, allowing
the generator set to shut down. See Section 3.13.1 for
instructions to reset faults.
Self Resetting Faults. Under these conditions, active
modes are turned off. If the contactor is in the preferred
source position, the engine cooldown time delay
executes and the engine start contacts open, allowing
the generator set to shut down. When the fault condition
is corrected, the fault is automatically cleared from the
controller and normal ATS operation continues.
Condition Type Description
Failure to Acquire Standby Source Warning The source voltage did not reach the acceptable range within a set
time (see Time Delays). For example, the standby source
generator set did not start.
Failure to Acquire Preferred Source Warning
IPM Synching
(In-Phase Monitor Synching)
Warning (status) The two sources did not come into phase within the Fail to
Synchronize time delay.
Note: If the sources do come into phase after the time delay
expires, the warning is automatically cleared and normal ATS
operation continues.
External Battery Low Warning The voltage of the battery connected to the external battery supply
module (EBSM) is low.
Failure to Transfer Warning The signal to transfer is sent to the contactor and the main shaft
auxiliary switch fails to indicate a c omplete ATS position change.
The controller will attempt to transfer the unit three times before the
fault is indicated.
Src N (or Src E) Rotation Err Self-Resetting Fault The detected phase rotation of one or both sources does not match
the preselected setting.
I/O Module Lost Comm Self-Resetting Fault An I/O device has stopped communicating or does not have a
correct address specified. Fault resets if communication is
reestablished.
Auxiliary Switch Fault * Manual Reset Fault The main shaft auxiliary switches indicate that the ATS is in more
than one position, or the position changed when no signal was sent
to initiate the change.
Auxiliary Switch Open * Manual Reset Fault The main shaft auxiliary switches indicate that the ATS is in neither
position (all inputs are open).
Source1/Source2 Breaker Trip
(service entrance models only)
Manual Reset Fault The Source1 or Source2 circuit breaker in the service entrance
transfer switch has tripped due to an overcurrent condition. Identify
and correct the cause of the fault before resetting the controller.
Module Status Change Manual Reset Fault An accessory module has been disconnected OR a new module is
detected. See Section 3.14.1 to reset.
Module Status Conflict Manual Reset Fault An accessory module has been replaced with a different type of
module with the same address. See Section 3.14.2 to reset.
External Fault Self-Resetting Fault The external input dedicated to this condition is closed.
* Auxiliary switch faults are not applicable to service entrance models. See Source1/Source2 Breaker Trip for service entrance models..
Figure 3-19 Warnings and Faults
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