103
No.
Failure item
System
default
operation
Failure definition
Solutions
Remarks
23
Output Over
Current(Hardwar
e)
Trip
The output current is
larger than 210% of
output current sample
rating
1. Check the output current.
24
Current Sensor
Power Fault
Trip
The LEM power board is
not energized
1. Check the power supply of
LEM power board.
System
operation is
configurable
25
Bypassed Cell
Quantity Over
Limit
Coast stop
The bypassed power cell
quantity of one phase is
above the setting value
1. Check the fault of power cell
and bypassed cell quantity.
Repair or replace the failed
power cell.
26
Power On With
MCB Signal
Loss
Trip
There is input high
voltage, but MCB status is
open
1. Check the status of MCB.
27
Synchronous
Switch Status
Error
Trip
KM2 and KM4 are closed
at the same time before
synchronous transfer start
1. Check the status of
switches.
28
Auto Tuning
Failure
Coast stop
During auto tuning, a fault
occurs, or stop command
is received
1. Check the fault record
29
Flying Start
Failure
Coast stop
During flying start, speed
search failure occurs, or
any other fault is
generated
1. If the flying start failure is
caused by speed search
failure, check the parameter of
flying start result for the reason
of flying start failure.
2. If the flying start failure is
caused by other fault, check
the fault record.
30
Automatic
Restart Failure
Trip
During the trial time of
automatic restart, the
number of faults is more
than maximum number of
trials, or a permanent fault
occurs
1. Check the fault record
31
Synchronous
Transfer Failure
Trip
During synchronous
transfer, the switch
close/open failure occurs,
or speed stable timeout
occurs, or voltage
synchronous timeout
1. If switch close/open failure
occurs, check the wiring of
DI/DO and make sure the
breaker is trouble free.
2. If speed stable timeout
occurs, modify parameter
Summary of Contents for MVF2000 Series
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