Autotuning; Autotuning Mode Selection - Omron VARISPEED L7 Guia De Inicio Rapido

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Autotuning

The motor data autotuning function sets the V/f pattern parameters (E1-
(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).
Autotuning Mode
Standard tuning with rotating motor Tunes all motor parameters.
IM tuning with not rotating motor
IM Line-to-line resistance tuning
Encoder offset tuning
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.
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
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.
Table 5 shows the selectable tuning mode for each control mode.
Table 5 Motor Data Autotuning Modes
Function
Tunes the basic motor parameters.
Tunes the line-to-line resistance
only
Tunes the offset between the
encoder and magnetic zero position.
), motor data parameters
Control Mode
Tuning
Mode
Open
Selection
V/f Loop
Vector
(T1-01)
0 No Yes
1 No Yes
2 Yes Yes
4 No No
Closed
Closed
Loop
Loop
Vector
Vector
(PM)
Yes Yes
Yes No
Yes No
No Yes
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