Controller Operation
Fault Description
kW Overload
IEEE C37.2 – 32 Directional Power Relay
The module detected that the generator output kW had risen
above the Overload Protection Trip for the configured delay
timer.
Loss of Excitation The module detected that the generator output kvar had fallen
below the Loss of Excitation Alarm Trip level for the configured
delay.
Loss of Mag-PU The module detected that the magnetic pick up was not produc-
ing a pulse output after the required Crank Disconnect criteria
had been met.
Mains Decoupling OF The module detected that the mains frequency had risen above
the Mains Decoupling Over Frequency Trip level when the gen-
erator was in parallel with the mains.
Mains Decoupling OV The module detected that the mains voltage had risen above
the Mains Decoupling Over Voltage Trip level when the genera-
tor was in parallel with the mains.
Mains Decoupling UF The module detected that the mains frequency had fallen below
the Mains Decoupling Under Frequency Trip level when the
generator was in parallel with the mains.
Mains Decoupling UV The module detected that the mains voltage had risen above
the Mains Decoupling Under Voltage Trip level when the gener-
ator was in parallel with the mains.
Mains ROCOF The module detected that the mains frequency had changed at
a rate larger than the Mains ROCOF Alarm Trip level when the
generator was in parallel with the mains.
Mains Vector Shift The module detected that the mains voltage waveform’s vector
had shifted more than the Mains Vector Shift Alarm Trip level
when the generator was in parallel with the mains.
Maintenance Due
NOTE: Due to module configuration the alarm message that ap-
pears on the display may be different. For further details of mod-
ule configuration, contact your Authorized Industrial Service
Dealer (IASD).
The module detected that one of the configured maintenance
alarms is due as its configured maintenance interval has
expired.
MSC ID Error The module detected that another module on the MSC link had
the same GenSet MSC ID configured.
MSC Old Version Unit The module detected that another module on the MSC link was
incompatible. Check all the module firmware version numbers
(under About | Application Number on the modules’ displays)
and ensure all are the latest version firmware. Use the DSE
Configuration Suite Software to upgrade the firmware (Tools |
Update Firmware) of the older modules.
MSC 1 and 2 Failure That module detected that the MSC and Redundant MSC com-
munication failed, most likely caused by it being disconnected.
MSC 1 Link Failure That module detected that the MSC communication failed, most
likely caused by it being disconnected.
MSC 1 Too Few Sets That module detected that the number of modules on the MSC
was less than the configured Minimum Modules on MSC Link
setting.
20 Deep Sea Electronics® G8601 Controller Owner’s Manual