ABB FSO-21 - Page 493

Fault tracing 493
A7D9 FSO encoderless
fault
Speed estimates differ too
much.
• Check the behavior of the driven
load compared with the drive
control parameter settings.
• Check that the drive is suitable for
the drive train and the motor.
• Adapt control parameters if gear
play or torsional rigidity causes
problems.
4)
A7DA FSO temperature
fault
FSO module temperature
is too high.
• Check ambient conditions. Reboot
the FSO module (switch the power
off and on or use drive parameter
96.09 FSO reboot, see the drive
firmware manual).
• Make sure that cooling is sufficient.
Contact your local ABB
representative.
4)
A7DB FSO undefined
warning
FSO new version,
undefined warning in the
drive event system.
Contact your local ABB
representative.
AA90 FSO stop
completed
FSO module has
completed the STO, SS1
or SSE function.
-
1)
AA91 FSO safe speed
limit
FSO module detected an
SLS or SMS speed trip
limit violation.
Check the separate code related to
SLS and SMS functions.
See section User-selectable events
for limit hits and special events on
page 501.
2) 3)
AA92 FSO out of eme
ramp
Motor speed was not
inside the ramp window
during the SSE function.
Make sure that the drive can
decelerate the load using the ramp
time (200.102 SAR0 ramp time to
zero).
2)
AA93 FSO ramp
coasted
Drive coasted the motor
to stop instead of using
the ramp.
Check that the FSO module zero
speed limit for the deceleration ramp
is not excessive (FSOGEN.51 Zero
speed without encoder or
FSOGEN.52 Zero speed with
encoder).
2)
AA94 FSO out of safe
ramp
Motor speed was not
inside the ramp window
during the SS1 function.
Make sure that the drive can
decelerate the load using the ramp
time (200.112 SAR1 ramp time to
zero).
2)
Code
(hex)
Name Cause What to do