Kohler KEP User Manual

TP-6745 7/1032 Section 2 Troubleshooting
Fault or Event
Message
Possible Cause Check
See
Section
Overfrequency,
Underfrequency
Frequency settings
Check that the system frequency setting matches the actual
source frequency (50 or 60 Hz).
2.5
Check the over/underfrequency pickup and dropout settings. See
Section 2.5.2 and the Setup Program Operation Manual.
2.5
Check that the frequency debounce setting is long enough to
prevent nuisance faults caused by brief frequency variations.
2.5
Source availability,
stability
Check that the source frequency matches the nominal system
frequency and stays within the range of the pickup and dropout
settings.
2.4.2
2.5
Source connections Check for loose connections.
Check wiring.
W/D
Overvoltage,
Undervoltage
Voltage settings
Check that the system voltage setting matches the actual source
voltage.
2.4.2
2.5
Check the over/undervoltage pickup and dropout settings. 2.5
2.5.2
Check that the voltage debounce setting is long enough to prevent
nuisance faults caused by brief voltage dips or spikes.
2.5
Source availability,
stability
Check that the source voltage matches the nominal system
voltage and stays within the range of the pickup and dropout
settings.
2.4.2
2.5
Source connections Check for loose connections.
Check wiring.
W/D
Calibration error Check the ATS calibration. 3.11
Loss of Phase
Single/three phase
setting does not
match source
Check that the controller single/three phase setting matches the
source.
2.5
One phase of the
source has been
lost
Check that all phases of the source are available. 2.4.2
Source connections Check for loose connections.
Source Rotation
Error
Phase rotation
setting (ABC or
BAC) does not
match source
Check that the controller phase rotation setting matches the
source phase rotation (ABC or BAC). Check the source
connections to the transfer switch and verify that A,B, and C are
connected to the appropriate lugs. Change the controller phase
rotation setting or rewire the source connections if necessary.
2.5
Source1 or Source2
Breaker Trip
An overcurrent
condition has
tripped the circuit
breaker.
Check the load for short circuits or malfunctioning equipment.
Identify the cause of the overcurrent condition before resetting the
fault.
ICCB breakers require manual reset.
ATS O/I/M
Controller cannot
determine the
transfer switch
position
Check wiring and connections to position limit switches. See the
schematic drawing for connections.
W/D
Test the position limit switch operation. Replace limit switch if
necessary.
Transfer switch in intermediate position. Manually operate the
transfer switch. See the ATS Operation/Installation Manual for
manual operation instructions and safety precautions.
ATS O/I/M
Failure to Transfer Varies. See Section 2.10, Troubleshooting. 2.10
O/I/M= Operation and Installation Manual; O/M = Operation Manual; TOC = Table of Contents, this manual;
W/D = Wiring Diagrams

Kohler KEP Specifications

General

Brand	Kohler
Model	KEP
Category	Switch
Language	English