109
No.
Failure item
System
default
operation
Failure definition
Solutions
Remarks
63
Downstream
Fiber
Communication
Fault
Trip
The power cell unit has
not received the
signals from the optical
fiber communication
board
1. Check whether the optical
fibers are in normal condition.
2. Check whether the joints of
the optical fibers are loosen or
falling off.
System
operation is
configurable
64
Power Cell DC
BUS Over
Voltage
Trip
The DC bus voltage
exceeds 1150V.
1. Check whether the input
high voltage exceeds the
maximum allowed value.
2. If overvoltage occurs during
deceleration, please prolong
the deceleration time of the
MVD properly.
System
operation is
configurable
65
Power Cell DC
BUS Ultra Over
voltage
Trip
The DC bus voltage
exceeds 1300V
1. Check whether the input
high voltage exceeds the
maximum allowed value.
2. If overvoltage occurs during
deceleration, please prolong
the deceleration time of the
MVD properly.
66
Power Cell
Control Power
Fault
Trip
Power cell auxiliary power
supply abnormal
1.Power on again, if the cell still
reports this fault, please
replace the power cell.
System
operation is
configurable
67
Power Cell
Capacitor
Voltage
Abnormal
Trip
The voltage of the middle
capacitors is 40V higher
or lower than one third of
DC bus voltage
1.Check whether the balance
resistors are in good condition
2. Check whether the dc link
capacitors are in good
condition
System
operation is
configurable,
Detected in PL,
Not detected in
PU
68
Upstream Fiber
Communication
Fault
Trip
The optical fiber
communication board has
not received the signals
from power cell unit.
1. Check whether the optical
fibers are damaged.
2. Check whether the joints of
the optical fibers are loosen.
System
operation is
configurable
Summary of Contents for MVF2000 Series
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