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Drive Faults
5.2. Drive Faults
Faults and errors, listed alphabetically. Additional troubleshooting of operational problems is listed in Section
5.3 and diagnostics solutions in Section 5.4.
Error/Message Alt. /
(NUM)
Description Cause/Solution/Troubleshoot
Abnormal Stop
Bus
EBus Indicates no
serial communi-
cation between
keypad operator
and controller
Parameters FB50 - 53 show the error count, service, and
value of both serial ports X6C and X6D. If the service
is 99 and the error is 9, then there is a framing or par-
ity error. This could indicate if the baud rate is incorrect,
telegrams invalid, or potentially loss of serial communica-
tion due to noise.
Check setting of FB11 DIN66019 Fb Baud Rate.
Invalid serial telegrams being received.
Increase FB12 Fieldbus Watchdog.
Analog Signal
Failure*
-
(157)
Analog speed
command not
present at the be-
ginning of a run.
When US04 = Absolute Analog Speed (2), Bipolar Ana-
log Speed (3), the speed command must be received
within t=2.5(LT01+LT03) sec. at beginning of run. Refer
to additional information at end of section.
Base Block bbL
(76)
This message
precedes most
faults and indi-
cates the drive
enable (I7) was
removed while
the drive was
outputting current.
This is not a drive
fault.
Indicates the output transistors have been safely shut off
and are being blocked from further operation.
This generally indicates the drive enable input (I7) was
dropped prematurely or abruptly while the drive was still
outputting current.
This is not a drive error or fault, but a status message.
Brake Switch
Failure*
-
(151)
Brake switch not
open/closed at
beginning/end of
run.
When LI04-11 input is set as Brake Release conrma-
tion, the brake switch must open at the beginning of the
run within t=LT01+LT03+2.5 sec and close at the end of
the run within t=LT10+LT12. Refer to additional informa-
tion at end of section.
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