Rockwell Automation 161 SERIES A - Manual (Page 32)

Bulletin 161
26
Fault Possible cause Corrective action
Do sudden high load changes occur? Choose a drive and motor with a higher
rating. Reduce sudden load changes.
Resonant frequencies occur in the
motor. Blank out the frequencies in question
with frequency jumps or change the
reference frequency.
The motor
runs
unstable.
The mains voltage is not constant. Change PWM carrier frequency
Has the maximum frequency been set
correctly? Check the frequency range entered. The speed
of the motor
does not
match the
frequency.
Has the rated speed of the motor or
reduction ratio of the gear been
selected correctly? Check the rated speed of the motor and
the reduction ratio of the gear.
The mains voltage has been switched
off without storing the values entered by
pressing the ENTER key. Enter the parameters again and save
each entry. The
parameters
stored do
not match
the values
entered. The values
entered
have not
been
stored.
When the mains voltage was switched
off the entered and saved values were
transferred to the power-failure safe
EEPROM. Power-off time must be at
least 6s. Enter the parameters again and save
each entry. After setting the parameters,
switch the power off for at least 6s.
The drive
can neither
be started
nor stopped
and set
points
cannot be
specified. Is the control mode been set correctly
under
A01 and A02 ?
Check the setting under parameter A01
and A02 .
No entries
can be
made.
It is not
possible to
set any
values. Is parameter protection activated? Disable parameter protection.
The
electronic
motor
protection
(fault
indication
E05 ) is
triggered.
Is the manual boost setting too high?
Is the electronic motor protection
setting correct?
Check the boost setting and the setting
for the electronic motor protection.