Owner’s Manual for MGG450
41
Troubleshooting
Alarm
Definition
WrnTstOnLdFail
This alarm is issued if the Test on load function is activated (by closing cor-
responding BI) and generator is not able to take over mains load com-
pletely (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.
Wrn SpdRegLim
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 two seconds. Close to one of the limits means
that Speed governor output value is within SpeedGo0,2V 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 loops6 is set in a wrong way. Warning is
blocked if binary output functions SPEED up and SPEED down are config-
ured. Refer also to Sync/load control.
Wrn VoltRegLim
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 two 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 is set in wrong way. Warning is blocked if binary output functions
AVR up or AVR down are configured. Refer also to Volt/PF control adjust-
ment chapter in an IGS-NT-x.y-Reference Guide.
G L neg8
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 neg8
Wrong generator phases sequence, additionally one phase is inverted.
G ph opposed8
Wrong generator phases sequence.
M L neg9
Mains phase is inverted. Check mains transformer phases connection,
one of transformer phases is connected the other way round (swap trans-
former coil leads connection).
M ph+L neg9
Wrong mains phases sequence, additionally one phase is inverted.
M ph opposed9
Wrong mains phases sequence.
B L neg13
Bus phase is inverted.
B ph+L neg13
Wrong bus phases sequence, additionally one phase is inverted.
B ph opposed13
Wrong bus phases sequence.
BL L neg12
Left bus phase is inverted.
BL ph+L neg12
Wrong left bus phases sequence, additionally one phase is inverted.
BL ph opposed
Wrong left bus phases sequence.
BR L neg
Right bus phase is inverted.
BR ph+L neg
Wrong right bus phases sequence, additionally one phase is inverted.
BR ph opposed
Wrong right bus phases sequence.
ActCallCH1Fail, CH2Fail, CH3-
Fail
Indication of unsuccessful active call 1-3. Refer to Inteli Communication
Guide for information about active calls. Refer to the IGSNT-x.y-Reference
Guide for description of setpoints which are part of the Act.calls/SMS
group and are used for active call setup.
Содержание MGG450
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