Generac Mobile MGG450, Owner'S Manual

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38 Owner’s Manual for MGG450
Troubleshooting
Alarm Definition
Stp Sync fail
Synchronization failure indication (alarm Sync timeout is active), gen-set
or group of generators was not synchronized to mains/bus within Sync/
Load ctrl: Sync timeout time.
Check setting of setpoints in the Sync/Load ctrl and Volt/PF ctrl groups.
Frequency regulation loop, Angle regulation loop and Voltage regulation
loop are active during synchronisation and you may need to adjust their
setting.
Actual state of synchronization is visible on the controller measurement
screen with synchroscope where speed and voltage regulators' outputs,
slip frequency and generator and mains/bus voltages can be observed
during the synchronization process.
Wrn Sync fail
Synchronization failure indication (alarm Sync timeout is active), generator
or group of generators was not synchronized to mains/bus within Sync/
Load ctrl: Sync timeout time.
Check setting of setpoints in the Sync/Load ctrl and Volt/PF ctrl groups.
Frequency regulation loop, Angle regulation loop and Voltage regulation
loop are active during synchronisation and you may need to adjust their
setting.
Actual state of synchronization is visible on the controller measurement
screen with synchroscope where speed and voltage regulators' outputs,
slip frequency and generator and mains/bus voltages can be observed
during the synchronization process.
BOC L1, L2 or L3 under
Generator L1, L2 or L3 voltage was under the Gen <V BOC limit for Gen V
del time. Undervoltage protections are based on Gener protect: Gen <V
BOC and Gen V del setpoints. This alarm is issued if voltage protections
are based on phase to neutral voltages. It means that Basic settings: Fix-
VoltProtSel is set to PHASE-NEUTRAL.
BOC L1, L2 or L3 over
Generator L1, L2 or L3 voltage was over the Gen >V BOC limit for Gen V
del time. Overvoltage protections are based on Gener protect: Gen >V
BOC and Gen V del setpoints. This alarm is issued if voltage protections
are based on phase to neutral voltages. It means that Basic settings: Fix-
VoltProtSel is set to PHASE-NEUTRAL.
Sd L1, L2 or L3 over
Generator L1, L2 or L3 voltage was over the Gen >V SD limit for Gen V del
time. Overvoltage protections are based on Gener protect: Gen >V SD
and Gen V del setpoints. This alarm is issued if voltage protections are
based on phase to neutral voltages. It means that Basic settings: FixVolt-
ProtSel is set to PHASE-NEUTRAL.
BOC L12, L23 or L31 under
Generator L12, L23 or L31 voltage was under the Gen <V BOC limit for
Gen V del time. Undervoltage protections are based on Gener protect:
Gen <V BOC and Gen V del setpoints. This alarm is issued if voltage pro-
tections are based on phase to phase voltages. It means that Basic set-
tings: FixVoltProtSel is set to PHASE-PHASE.
BOC L12, L23 or L31 over
Generator L12, L23 or L31 voltage was over the Gen >V BOC limit for Gen
V del time. Overvoltage protections are based on Gener protect: Gen >V
BOC and Gen V del setpoints. This alarm is issued if voltage protections
are based on phase to phase voltages. It means that Basic settings: Fix-
VoltProtSel is set to PHASE-PHASE.
Sd L12, L23 or L31 over
Generator L12, L23 or L31 voltage was over the Gen >V SD limit for Gen
V del time. Overvoltage protections are based on Gener protect: Gen >V
SD and Gen V del setpoints. This alarm is issued if voltage protections are
based on phase to phase voltages. It means that Basic settings: FixVolt-
ProtSel is set to PHASE-PHASE.
BOC fgen under
Generator frequency was under the Gen <f limit for Gen f del time. Under
frequency protection is based on Gener protect: Gen <f and Gen f del set-
points.