EN-14
Autotuning
The motor data autotuning function sets the V/f pattern parameters (E1-
), motor data parameters
(E2-
, E5-
) and the encoder data (F1-01) automatically. The steps which have to be performed during
the autotuning depend on the tuning mode selection.
Autotuning Mode Selection
The autotuning mode has to be selected according to selected control mode and the mechanical system (motor
no load rotation possible or not).
Table 5
shows the selectable tuning mode for each control mode.
Table 5 Motor Data Autotuning Modes
Autotuning Modes
Autotuning with Rotating Motor (T1-01
=
0)
This autotuning mode can be used in any Vector control mode. After the motor nameplate data have been
input, the inverter will operate the motor for approximately 1~2 minutes and set the required motor parameters
automatically.
Autotuning with Not Rotating Motor (T1-01
=
1)
This autotuning mode can be used for Open Loop and Closed Loop Vector control for IM only. The inverter
supplies power to the motor for approximately 1 minute and some of the motor parameters are set automati-
cally while the motor does not turn. The motor no-load current and the rated slip value will automatically be
fine tuned during the first time operation.
Verify the rated slip value (E2-02) and the no-load current (E2-03) after the first run with nominal speed.
Autotuning for Line-to-Line Resistance (T1-01 = 2)
Non-rotating autotuning for line-to-line resistance can be used in V/f control, Open Loop Vector control and
Closed loop Vector control. The Inverter supplies power to the motor for approximately 20 seconds to measure
the motor line-to-line resistance and cable resistance. The motor does not turn during this tuning procedure.
Encoder Offset Tuning (T1-01=4)
This tuning mode is available in Closed Loop Vector control for PM motors only. It automatically sets the off-
set between the magnetic pole and the encoder zero position. It can be used to retune the offset after an
encoder change without changing the motor data settings.
Autotuning Mode
Function
Tuning
Mode
Selection
(T1-01)
Control Mode
V/f
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop
Vector
(PM)
Standard tuning with rotating motor Tunes all motor parameters.
0
No
Yes
Yes
Yes
IM tuning with not rotating motor
Tunes the basic motor parameters.
1
No
Yes
Yes
No
IM Line-to-line resistance tuning
Tunes the line-to-line resistance
only
2
Yes
Yes
Yes
No
Encoder offset tuning
Tunes the offset between the
encoder and magnetic zero position.
4
No
No
No
Yes
Use this tuning mode only, if the motor can rotate freely which means that the ropes must be removed
and the brake must be open. The gearbox can remain connected to the motor.
IMPORTANT
