Recommended actions
Check the event log for previous error messages.
20444, The SD card was removed
Description
The SD card was removed.
Consequences
The system will enter system failure state.
Probable causes
The SD card was removed or there is a glitch in the contact
between the SD card and the connector.
Recommended actions
Perform a restart as detailed in the Operator's Manual, IRC5.
20445, The USB to Serial adapter was removed
Description
The USB to Serial adapter was removed.
Consequences
The USB to serial port is not accessible.
Probable causes
The USB to Serial adapter was removed or there is a glitch in
the contact between the USB to Serial adapter or the connector.
Recommended actions
Perform a restart as detailed in the Operator's Manual, IRC5.
20446, Failed to access the HOME directory
Description
The system failed to access the HOME directory during startup.
The system has tried to create a new HOME directory to
recover.
Consequences
The system has entered system failure state.
If a new HOME directory was created:
arg
then it will be empty.
Probable causes
The HOME directory was missing or renamed before the reboot
of the system.
Recommended actions
Check the contents in the HOME directory for any missing file
or folder. Copy any missing contents to the HOME directory
from a Backup and reboot the system or do a restore from a
Backup to recover.
20450, SC
arg
CBC Speed exceeded
Description
Cyclic Brake Check (CBC) speed limit is exceeded in Safety
Controller (SC) on mechanical unit
arg
. Either CBC test interval
has expired or a previous brake check failed.
Recommended actions
Decrease speed and execute Brake check.
20451, SC
arg
Not synchronized
Description
Safety Controller (SC)
arg
is not synchronized with supervised
mechanical units.
Recommended actions
Move all mechanical units supervised by Safety Controller
arg
to the synchronization positions defined in the safety
configuration.
20452, SC
arg
Synchronized
Description
Safety Controller (SC)
arg
is now synchronized to supervised
mechanical units. Safety supervision can be used.
20453, SC
arg
: Wrong Sync. Position
Description
The positions of the supervised mechanical units do not match
the synchronization positions defined in the safety configuration
for Safety Controller (SC)
arg
on axis
arg
.
Recommended actions
Check that all supervised mechanical units are positioned at
the configured synchronization position. Check that the
synchronization switch is working properly. Check that motor
calibration and revolution counters are updated and correct.
Check that the synchronization position in the safety
configuration is correct. Check for configuration error. Download
motor calibration values. Check if axis 4 or 6 is configured as
independent, if YES, check that the EPS configuration is
configured likewise.
20454, SC
arg
Servo-Lag Limit exceeded
Description
Safety Controller (SC)
arg
detected a too big difference between
the ordered and actual position, for mechanical unit
arg
on axis
arg
.
Continues on next page
Operating manual - Troubleshooting IRC5
143
3HAC020738-001 Revision: AA
© Copyright 2005-2018 ABB. All rights reserved.
5 Troubleshooting by event log
5.4 2 xxxx
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