Parker AC30 series User Manual

Trips & Fault Finding 7-11
AC30 series Variable Speed Inverter
Autotune Alerts
If the autotune fails to complete for any reason, an alert will be displayed and the autotune abandoned. Alerts are as follows:
Alert message
Possible Cause
Remedy
LEAKAGE L TIMEOUT
The autotune has attempted to determine the leakage
inductance of the motor, but cannot make the required
test current.
Problem with motor connection.
MOTOR TURNING
ERROR
The autotune is trying to find the encoder direction by
spinning the motor, but the motor is already spinning.
Wait till the motor stops.
NEGATIVE SLIP FREQ
Autotune has calculated a negative slip frequency,
which is not valid. Nameplate rpm may have been set
to a value higher than the base speed of the motor.
Check nameplate rpm, base frequency, and pole pairs are
correct.
TR TOO LARGE
The calculated value of rotor time constant is too large.
Check the values of Nameplate Speed and Base Frequency.
TR TOO SMALL
The calculated value of rotor time constant is too small.
Check the values of Nameplate Speed and Base Frequency.
MAX SPEED TOO LOW
During Autotune the motor is required to run at the
nameplate speed of the motor. If 100% Speed in RPM
parameter limits the speed to less than this value, an
error will be reported.
Increase the value of 100% Speed in RPM parameter up to
the nameplate rpm of the motor (as a minimum). It may be
reduced, if required, after the Autotune is complete.
SUPPLY VOLTS LOW
The autotune will compensate for low supply volts,
down to 70% of motor rated volts. Below this value it
will stop the autotune and raise an alert.
Re-try when mains volts are within specification.
NOT AT SPEED
The motor was unable to reach the required speed to
carry out the Autotune.
Possible reasons include: motor shaft not free to turn; the
motor data is incorrect.
MAG CURRENT ERROR
It was not possible to find a suitable value of
magnetising current to achieve the required operating
condition for the motor.
Check the motor data is correct, especially nameplate rpm
and motor volts. Also check that the motor is correctly
rated for the drive.
KE TOO LARGE
Ke value calculated during the autotune (stationary) is
too large (the max value is 840V)
Check the motor data is correct, especially nameplate rpm,
rated amps and motor volts.
If low speed motor with a Ke value higher than 840V, enter
by hand the corresponding value after the autotune
completion.
KE TOO SMALL
Ke value calculated during the
autotune (stationary) is
too small (the min value is 1V)
Check the motor data is correct, especially nameplate rpm,
rated amps and motor volts.
ALL TESTS DISABLED
All auto tune tests are disabled
Check parameter 0257: Autotune Test Disable

Parker AC30 series Specifications

General

Control Modes	Closed-loop vector
Feedback	Encoder
Operating Temperature	0 to 40°C (32 to 104°F) standard, -20 to 50°C (-4 to 122°F) with derating
Protection	Overcurrent, Overvoltage, Undervoltage
Communication	RS485