InteliGen
NT
, InteliSys
NT
, InteliMains
NT
– Troubleshooting Guide,
SW version IGS-NT-3.1.0, IM-NT-3.1.0, ©ComAp
– August 2018
39
IGS-NT Troubleshooting Guide.pdf
IGS-NT Alarm/History
record
Alarm/
History
Appeara
nce
Description
This protection is active if the
BusL2POvrldProt
setpoint is
set to ENABLED. Protection is based on setpoints
BusL
protect
:
OverldStrtEval
and
2POverldStEvDel.
BOC NCB fail
A+H
NCB fail is detected if the
NeutralCB fdb
input doesn't
follow
Neutral CB C/O
output within 400 ms.
Wrn BadPwrCfg
A+H
Power format is set differently in controllers which are part
of the same control group. Check Power formats setting in
GenConfig on the Miscellaneous card (available in the
Advanced mode only).
21
WrnTstOnLdFail
A+H
This alarm is issued if the Test on load function is activated
(by closing corresponding BI) and genset is not able to
take over mains load completely (mains import = 0) within
the
Sync/Load
ctrl
:
Load
ramp
time. Message
“WrnTstOnLdFail” is recorded into controller history in case
of this failure. It is either necessary to extend the
Load
ramp
time or check engine speed regulation.
20
Wrn SpdRegLim
A+H
This alarm indicates that controller Speed governor output
has reached its limit. Warning is issued if Speed governor
output stays close to one of the limit values for more than
2 seconds. Close to one of the limits means that Speed
governor output value is within
SpeedGovLowLim
+0,2V
range or
SpeedGovHiLim
-0,2V range.
This alarm gives you information that engine speed
governor is either connected in a wrong way or one of the
speed control related regulation loops
6
is set in a wrong
way.
Warning is blocked if binary output functions SPEED up
and SPEED down are configured.
Refer also to
Sync/load control adjustment
chapter in an
IGS-NT-x.y-Reference Guide.
Wrn VoltRegLim
A+H
This alarm indicates that controller AVRi output has
reached its limit. Warning is issued if the AVRi output stays
close to 0% or 100% limit for more than 2 seconds. Close
to limit means that AVRi output value is either <2% or
>98%.
This alarm gives you information that generator voltage
regulator is either connected in a wrong way or one of the
voltage control related regulation loops
7
is set in a wrong
way.
Warning is blocked if binary output functions AVR up or
AVR down are configured.
Refer also to
Volt/PF control adjustment
chapter in an IGS-
NT-x.y-Reference Guide.
G L neg
8
A
Generator phase is inverted. Check generator phases
connection, one of generator phases is connected the
other way round (swap generator coil leads connection).
G ph+L neg
8
A
Wrong generator phases sequence
14
, additionally one
phase is inverted.
G ph opposed
8
A
Wrong generator phases sequence
14
M L neg
9
A
Mains phase is inverted. Check mains transformer phases
connection, one of transformer phases is connected the
other way round (swap transformer coil leads connection).
M ph+L neg
9
A
Wrong mains phases sequence
14
, additionally one phase
