1-2 Troubleshooting and Error Codes
Creating Fault Reports
Complete fault reports are critical for analysis and repair of modules
returned to the factory.
At a minimum, perform and record the following:
x Record the contents of the fault queue (faults and times of occurrence)
x Make record of any burn marks on the rectifying module, DC-capacitors,
inverter bridge, charging resistors, balancing/precharging resistors,
printed circuit boards, bus bars, cabling and fiber-optic cabling
x Make record of any liquid and condensation marks on printed circuit
boards, components and mechanical parts
x Make record of the amount of dust and other additional particles on drive
and drive components
x Make record of any mechanical damage to the drive and drive
components
x Record the size and type of main fuses
x Record any other important marks and damage
Addressing 700S Hardware
Faults
Fault No. Description Action (if appropriate)
HiHp In PhaseLs 65 AC Input Phase Loss - AC voltage is
not present on one or two input
phases.
1. Check for voltage on each
input phase.
2. Check the status of each
external input fuse.
HiHp Bus Com Dly 66 Bus Communication Time Delay - the
processor has not received proper
periodic feedback information.
Check fiber-optic connections
between the Power Interface
Circuit Board and Voltage
Feedback Circuit Board.
HiHp Bus Link LS 67 Bus Communication Link Loss - bus
communication between the Power
Interface Circuit Board and Voltage
Feedback Circuit Board has halted.
Check fiber-optic connections
between the Power Interface
Circuit Board and Voltage
Feedback Circuit Board.
HiHp Bus CRC Er 68 Bus Communication CRC Error - too
many Cycling Ring Checksum (CRC)
errors have occurred in the
communication bus.
A fast power cycle may cause the
700S Main Control Board to attempt
to communicate with the ASIC Board
before the ASIC Board is energized.
Check fiber-optic connections
between the Power Interface
Circuit Board and Voltage
Feedback Circuit Board.
Wait five minutes before
re-energizing the drive.
HiHp Bus WtchDog 69 Bus Communication Watchdog Error -
communication has halted in the
communication bus, causing the
watch dog timer to expire.
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.
HiHp Fan Fdbk Ls 70 Fan Feedback Loss - a fan feedback
signal has been lost.
1. Check the main cooling fan.
2. Check the Main Control
Board cooling fan.
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