Generac Mobile MGG450, Руководство пользователя

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36 Owner’s Manual for MGG450
Troubleshooting
Alarm Definition
BusL V unbal
Left bus voltage unbalance alarm is based on BusL protect: BusL V unbal
and BusL V unb del setpoints. The voltage unbalance is calculated as a
maximum difference between phase voltages.
BusR V unbal
Right bus voltage unbalance alarm is based on BusR protect: BusR V
unbal and BusR V unb del setpoints. The voltage unbalance is calculated
as a maximum difference between phase voltages.
Dongle incomp
Incompatible (usually missing) dongle indication.
IGS-NT-LSM+PMS dongle (green one) is required if load sharing and
power management functions are used in MINT, COX or COMBI applica-
tion.
Check a Reference Guide for information whether a dongle is required for
requested functionality or not.
Emergency stop
Emergency stop activity indication. Check binary input with Emergency
stop function.
CAN2 bus empty
This alarm is active if controller doesn’t “see” any other controllers on the
CAN2 bus.
Alarm activation can be enabled/disabled using setpoint Comm settings:
CAN2empt-Detect. This setpoint should be set to DISABLED for single
generator applications.
Check Reg16/Reg32 strings to see which controllers are in the same
group18.
ChrgAlternFail
Charger fail detection. This alarm means that voltage on the D+ terminal is
lower than 80% of controller power supply voltage and it means that bat-
tery is no longer charged.
Check function of engine alternator or independent battery charger.
Sd Stop fail
Engine stop fail indication. Stop fail means that engine does not reach “still
engine” state within Engine params: Stop time.
“Still engine” conditions:
• Engine speed (RPM) = 0
• AI: Oil press < Starting POil
• D+ terminal is not active
• BI: RunIndication 1 and 2 and 3 are not active
• Generator voltage < 15V (in all phases)
• Generator frequency = 0 Hz
if all these conditions are fulfilled, additional two second delay is used to
confirm “still engine” state.
Overspeed
Gen-set over speed alarm is based on Engine protect: Overspeed setpoint
setting.
Underspeed
Gen-set under speed alarm is based on Engine protect: Underspeed set-
point setting.
Pickup fail
Loss of RPM signal in running state (“engine running” state is active).
“Engine running” conditions:
• Engine speed > Engine params: Starting RPM
• AI: Oil press > Starting POil
• D+ terminal active (this condition is used only if Engine params: D+
function = ENABLED)
• BI: RunIndication 1 or 2 or 3 is active
• Generator voltage > 15V (in any phase)
Refer to Speed pick-up input section in the Technical data chapter in IGS-
NT-x.y.-Installation Guide manual for information about requested pick-up
signal parameters.