Common symptoms and corrective actions – Rockwell Automation 25B PowerFlex 520-Series Adjustable Frequency AC Drive User Manual User Manual
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Rockwell Automation Publication 520-UM001G-EN-E - September 2014
Chapter 4
Troubleshooting
Common Symptoms and
Corrective Actions
The drive is designed to start from the keypad when shipped. For a basic test of
drive operation:
1.
Remove all user I/O wire.
2.
Verify safety terminals (S1, S2 and S+) jumper is in place and tightened.
3.
Verify wire jumper is in place between I/O terminals 01 and 11.
4.
Verify that the three jumpers are in their proper default positions on the
control board. See
PowerFlex 525 Control I/O Wiring Block Diagram on
for more information.
5.
Reset default parameter values by setting
[Reset Defalts] to 2
“Factory Rset”.
6.
If safe to do so for your application, press Start on drive keypad. Drive will
run according to the speed potentiometer.
F122
I/O Board Fail
2
Failure has been detected in the drive
control and I/O section.
• Cycle power.
• Replace drive or control module if
fault cannot be cleared.
F125
Flash Update Req
2
The firmware in the drive is corrupt,
mismatched, or incompatible with the
hardware.
Perform a firmware flash update
operation to attempt to load a valid set
of firmware.
F126
NonRecoverablErr 2
A non-recoverable firmware or
hardware error was detected. The drive
was automatically stopped and reset.
• Clear fault or cycle power to the
drive.
• Replace drive or control module if
fault cannot be cleared.
F127
DSIFlashUpdatReq 2
A critical problem with the firmware
was detected and the drive is running
using backup firmware that only
supports DSI communications.
Perform a firmware flash update
operation using DSI communications to
attempt to load a valid set of firmware.
(1) This fault is not applicable to PowerFlex 523 drives.
(2) See
for more information.
(3) This fault may be cleared by the auto-restart routine and will be attempted only once. It ignores the value set in parameter A541
[Auto Rstrt Tries].
Fault Types, Descriptions and Actions
No.
Fault
Type
(2)
Description
Action