Allen-Bradley PowerFlex 700H Hardware Service Manual page 11

Fault No. Description
HiHp Drv OvrLoad 71 Drive Overload - the circuit board on
the Power Module has detected an
overload.
HiHp PwrBd PrcEr 72 Power Board Processor Error - a
microprocessor on the Power Board
has detected a communication error.
HiHp PrChrg Cntc 73 Precharge Contactor Fault - proper
contactor feedback has not occurred.
The precharge contactor has probably
failed to pick up or the feedback signal
has failed. This fault only applies to
DC input drives.
HiHp PwrEE Error 74 Power EEPROM Error - the rating of
the drive and data in the Power
EEPROM on the Power Board do not
match.
HiHP PwrBd OTemp 75 Power Board Over-Temperature -
temperature of the Power Board on
has exceeded 85 C.
HiHP HardwareVer 76 (High Horse Power Star-coupler board
frame 12 drives only) The left side and
right side inverter units have different
current ratings, or the ASIC on power
board is not functioning.
HiHP CurrUnblnce 77 (High Horse Power Star-coupler board
- frame 12 drives only) The output
current between the left side and right
side inverter units are unbalanced
(20% of current feedback rating, e.g.
184A = 920A * 0.2).
HiHP VoltUnblnce 78 (High Horse Power Star-coupler board
- frame 12 drives only) The bus
voltage for the left and right side
inverter units is unbalanced (6% of
normal bus voltage, e.g. 41Vdc =
675Vdc * 0.06).
Troubleshooting and Error Codes
Action (if appropriate)
Measure output current of the
drive. If the level is ever greater
than the maximum drive rated
output current level reduce the
load. If the levels are always
well below the drive rated
levels, then replace the power
module.
1. Check fiber-optic
connections between the
Power Interface Circuit Board
and Voltage Feedback Circuit
Board.
2. Check connections between
the Main Control Board and
the Power Interface Circuit
Board.
3. Replace the Voltage
Feedback Circuit Board
4. Replace the Power Interface
Circuit Board.
5. Replace the Main Control
Board.
Check precharge circuit
wiring.
Check for loose connections
on X50 terminal block and/or
the X9 and X15 connectors
on the ASIC Board.
Replace output power module
or program a new power board.
Check the main cooling fan and
fan power supply, replace if
necessary.
Check the version of each
inverter (left and right units),
then replace the units in pairs.
Check motor wiring for each
unit.
Check input power and wiring
for each unit.
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