Danfoss VLT AutomationDrive EZ FC 321 Programming Manual page 69

VLT® AutomationDrive EZ FC 321
Programming Guide
Op- Name Description
tion
Do not select this option if an LC filter is used between the drive and the motor. For best performance, it is
recommended to obtain the advanced motor data from the motor manufacturer to enter into parameter
1-31 Rotor Resistance (Rr) through parameter 1-36 Iron Loss Resistance (Rfe). Complete AMA cannot be per-
formed on permanent magnet motors.
[2] Enable Re- Performs a reduced AMA of the stator resistance R
duced AMA
asynchronous motors and non-salient PM motors.
[3] Enable re- Performs AMA of the stator resistance R
duced AMA
leakage reactance X
II
[4] Enable re- Performs a reduced AMA of the stator resistance R
duced AMA
used between the drive and the motor. The AMA II is a variant of AMA, based on the principles of the tor-
II
que calibration. It is recommended for special motors (for example S3) and high-power motors.
[5] Enable ro- Performs rotation with 60% of nominal speed in Flux Sensorless with soft PID independent of selection in
tating AMA
parameter 1-01 Motor Control Principle. Measures Back EMF on PM motors and re-measures main reactance
II
(X ) on induction motors. Ensure that the motor poles specified in parameter 1-39 Motor Poles are correct
h
for accurate back EMF measurement.
[6] Enable 360°
Sensorless: Performs a 360 degree test run in sensorless mode to verify the number of motor poles speci-
turn OL
fied in parameter 1-39 Motor Poles.
Closed loop: Performs a 360 degree test run in sensorless mode to test the encoder before running in
closed loop. The speed is set in parameter 3-19 Jog Speed [RPM]. During the test run, the direction of rota-
tion is verified and the number of pulses per revolution is verified to match the configuration in parameter
group 17-** Motor Feedb. Option or parameter group 5-** Digital In/Out based on the selected encoder.
After completing the 360 degree test run, either of the following messages are shown:
• Encoder/Resolver OK
• Encoder/Resolver Fail
• Encoder/Resolver Inverted
• Encoder/Resolver resolution/poles low
• Encoder/Resolver resolution/poles high
The parameter 1-41 Motor Angle Offset is automatically set when using PM motor and absolute encoder or
resolver.
[7] Enable in-
Use this option to ramp up in the mode as specified in parameter 1-01 Motor Control Principle. Measured
ertia run
inertia is set in parameter 1-69 System Inertia and parameter 7-08 Speed PID Feed Forward Factor is set to
90%.
-
For the best adaptation of the drive, run AMA on a cold motor.
-
AMA cannot be performed while the motor is running
-
AMA cannot run with a sine-wave filter connected.
It is important to set parameter group 1-2* Motor Data correctly, since these form part of the AMA algorithm. Perform an AMA to
achieve optimum dynamic motor performance. It may take up to 10 minutes, depending on the power rating of the motor.
Avoid generating external torque during AMA.
Danfoss A/S © 2021.08
, the rotor resistance R
s
, and the main reactance X
21
N O T I C E
N O T I C E
N O T I C E
in the system only. This option is available for standard
s
, the stator leakage reactance X
r
.
h
in the system only. Select this option if an LC filter is
s
AU373327181955en-000101 / 130R1208 | 69
Parameter Descriptions
, the rotor
1