Faults, Warnings And Events - ABB FSO-21 User Manual

Faults, warnings and events

Code Name
(hex)
Faults
7A81 TUCSO fault
7A8B FSO general fault
7A90 FSO stop
completed
7A91 FSO safe speed
limit
7A92 FSO out of eme
ramp
7A93 FSO ramp
coasted
7A94 FSO out of safe
ramp
7A96 FSO out of SDI
7A97 FSO premature
POUS
Cause
FSO subsystem fault
FSO module is in the
Configuration mode.
FSO module also
generates this fault after
certain malfunctions
which the FSO module
indicates by warnings.
First the FSO module
generates a warning
indication which allows
the drive to control the
system to a safe state.
After this the drive trips.
FSO module has
completed the STO, SS1
or SSE function.
Motor actual speed
exceeded an SLS1...4 or
SMS limit of the FSO
module.
Motor speed was not
inside the ramp window
during the SSE function.
Drive coasted the motor
to stop instead of using
the ramp.
Motor speed was not
inside the ramp window
during the SS1 function.
SDI positive or SDI
negative exceeded the
tolerance limit to the
forbidden direction.
FSO received an external
POUS request while the
drive was still modulating.
Fault tracing 405
What to do
Contact your local ABB
representative.
See the warning log for more
information on the actual cause.
-
Check the drive.
Make sure that the drive can
decelerate the load using the ramp
time (200.102 SAR0 ramp time to
zero).
Check that the FSO module speed
limit for stopping the ramp
deceleration is not excessive
(FSOGEN.51 Zero speed without
encoder).
Make sure that the drive can
decelerate the load using the ramp
time (200.112 SAR1 ramp time to
zero).
Check the drive.
It is recommended to activate the
POUS function only when the drive is
stopped.
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