42
Unidrive M200-201 Quick Start Guide
Issue Number: 6
Defines the auto-tune test to be performed.
There are two autotune tests available in open loop mode, a stationary and a rotating test. A rotating
autotune should be used whenever possible so the measured value of power factor of the motor is
used by the drive.
Open Loop and RFC-A:
1. A stationary autotune can be used when the motor is loaded and it is not possible to remove the
load from the motor shaft. To perform a Stationary autotune, set Pr
00.038
to 1,
2. A rotating autotune should only be used if the motor is unloaded. A rotating autotune first
performs a stationary autotune, as above, then a rotating test is performed in which the motor is
accelerated with currently selected ramps up to a frequency of
Rated Frequency
(00.039) x 2/3,
and the frequency is maintained at that level for 4 seconds. To perform a Rotating autotune, set
Pr
00.038
to 2.
RFC-A only:
3. This test measures the mechanical characteristic of the motor and load by rotating the motor.
This test should only be used provided all the basic control parameters have been set-up
correctly. The test measures the motor and load inertia, which can be used in automatic set-up of
the frequency controller gains and in producing a torque feed-forward term. It also measures the
load compensation parameters to cancel resonance effects.
Following the completion of an autotune test the drive will go into the inhibit state. The drive must be
placed into a controlled disable condition before the drive can be made to run at the required
reference. The drive can be put in to a controlled disable condition by removing the Safe Torque Off
signal from terminals, setting the
Drive Enable
to Off (0) or disabling the drive via the
Control Word
and
Control Word Enable
Enter the value from the rating plate of the motor. Defines the voltage to frequency ratio applied to
the motor.
00.038 {05.012}
Autotune
RW
Num
NC
US
OL
Ú
0 to 2
Ö
0
RFC-A
0 to 3
A rotating autotune will cause the motor to accelerate up to 2/3 base speed in the
direction selected regardless of the reference provided. Once complete the motor will
coast to a stop. The enable signal must be removed before the drive can be made to run
at the required reference.The drive can be stopped at any time by removing the run
signal or removing the drive enable.
00.039 {05.006}
Motor Rated Frequency
RW
Num
US
OL
Ú
0.00 to VM_SPEED_FREQ_REF_
UNIPOLAR Hz
Ö
50 Hz: 50.00 Hz
60 Hz: 60.00 Hz
RFC-A
WARNING
Unidrive M200 201 Quick Start Guide English Iss6.book Page 42 Thursday, September 10, 2015 1:48 PM
