Addressing 700H Hardware Faults - Allen-Bradley PowerFlex 700H Hardware Service Manual
High performance/adjustable frequency ac drive
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Also See for PowerFlex 700H:
- Programming manual (116 pages) ,
- Service manual (115 pages) ,
- Installation instructions manual (22 pages)
Table of Contents
1-4
Troubleshooting and Error Codes
Addressing 700H Hardware
Faults
Name
No.
Description
Auxiliary In
2
Auxiliary input interlock is open.
Power Loss
3
DC bus voltage remained below
parameter 186 [Power Loss Volts] for
longer than parameter 185 [Power
Loss Time]. Enable/Disable with
parameter 238 [Fault Config 1]. For
more information refer to publication
20C-PM001, Programming Manual -
PowerFlex 700H.
UnderVoltage
4
DC bus voltage fell below the
minimum value of 333V for 400/480V
drives and 461V for 600/ 690V drives.
Enable/Disable with parameter 238
[Fault Config 1]. For more information
refer to publication 20C-PM001,
Programming Manual - PowerFlex
700H.
OverVoltage
5
DC bus voltage exceeded maximum
value.
Input Phase
17
One input line phase missing.
OutPhasMissng
21
Zero current in one output motor
phase.
Ground Fault
13
A current path to earth ground greater
than 25% of drive rating. Ground fault
level is 50% of the drive's heavy duty
current rating. The current must
appear for 800ms before the drive will
fault.
InverterFault
14
Hardware problem in the power
structure.
System Fault
10
Hardware problem exists in the power
structure.
Load Loss
15
Do not use this fault in 700H
applications
Precharge Error
31
The precharge function has failed to
complete within 30 seconds (default)
of the precharge request. The
precharge time out is configurable by
Par 410 [PreChrg TimeOut]
A precharge request is initiated when
the DC Bus voltage is above the
Undervoltage Trip level and the
precharge input is high (the
requirement for the precharge being
high can be bypassed by setting Par
411 [PreChrg Control] / bit 01
"PreChrg Enable" to be off.
Power Unit
70
One or more of the output transistors
were operating in the active region
instead of desaturation. This can be
caused by excessive transistor current
or insufficient base drive voltage.
Action (if appropriate)
Check remote wiring.
Monitor the incoming AC line for
low voltage or line power
interruption.
Monitor the incoming AC line for
low voltage or power
interruption.
Monitor the AC line for high line
voltage or transient conditions.
Bus overvoltage can also be
caused by motor regeneration.
Extend the decel time or install
and external dynamic brake
option.
Check user-supplied fuses
Check AC input line voltage.
Check motor wiring.
Check motor for open phase.
Check the motor and external
wiring to the drive output
terminals for a grounded
condition.
Cycle power.
Replace drive.
Cycle power.
Replace drive.
Check that parameter 238
[Fault Config 1] / bit 0 "Power
Loss" and parameter 259
[Alarm Config 1] / bit 13 "Load
Loss" are set to zero.
Verify the value in parameter
410 [PreChrg TimeOut]
Verify the bit value in parameter
411 [PreChrg Control] / bit 01
"PreChrg Enable".
Clear fault.
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