Rockwell powerflex 700s User Manual

1-6 Troubleshooting and Error Codes
26 Ground Fault A current to earth exceeds 35% of
the peak drive rating.
• Check the motor and external
wiring to the drive output
terminals for a grounded
condition.
27 Inst Overcurrent Instantaneous motor current exceeds
214% of rating
• Reduce mechanical load.
• Check the motor and external
wiring to the motor.
28 VPL/MC Comm
Fail
A communication failure has
occurred between the Velocity
Position Loop (VPL) processor and
the Motor Control (MC) processor on
the main control board. Possible
causes are:
• VPL is flashing MC firmware into
the MC processor when HIM
indicates "Loading Config".
• MC has failed to complete or pass
diagnostic tests.
• MC has not detected VPL
handshake activity for over 32 ms.
• VPL has not detected MC
handshake activity for over 32 ms.
This is indicated when Fault Test
Point 15 or 16 equals 1. This test
point is viewed in parameter 330
[Fault TP Data] when parameter
329 [Fault TP Select] is set to
value 15 or 16.
• Cycle power
• Reflash firmware
• Replace Main Control Board
29 PWM Signal Short This fault is detected when ever the
actual IGBT gate is different than the
commanded IGBT states. This fault is
detected by the Motor Control (MC)
processor.
30 MC Firmware One of the following Motor Control
(MC) firmware errors has occurred:
• MC Task Over Run
• Illegal Interrupt
• Self Diagnostic Fault
• Data Error
• Cycle power
• Reflash firmware
• Replace Main Control Board
31 Precharge Error The precharge function has failed to
complete within 30 seconds (default)
of the precharge request. The
precharge time out can be configured
in parameter 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
parameter 411 [PreChrg Control] bit
01 “PreChrg Enable” off).
• Verify the value in parameter 410
[PreChrg TimeOut].
• Verify the bit value in parameter
411 [PreChrg Control] = 1 “Enbl
PrChrg”.
• Configured with parameter 381
[PreChrg Err Cnfg]
32 PWM Asynch The Motor Control Processor is not
synchronized with SynchLink.
33 +/- 15volt Power The12V DC control voltage is outside
the tolerance range. The positive
voltage power must be within the
band from +17.00 to +11.61V DC.
The negative voltage power must be
within the band from -17.00 to
-11.61V DC.
• Replace switch mode power
supply. For smaller frames,
replace drive.
No. Name Description Action (if appropriate)

Rockwell powerflex 700s Specifications

General

Brand	Rockwell
Model	powerflex 700s
Category	Controller
Language	English