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Omron VARISPEED L7 User Manual

Omron VARISPEED L7
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4-4
4
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. Refer to page 5-53, Motor Autotuning: T for an overview
of the autotuning parameters.
îš‹ 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 4.1 shows the selectable tuning mode for each control mode.
Table 4.2 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.
Autotuning Mode Function
Tuning
Mode
Selection
(T1-01)
Control Mode
V/f
Open
Loop Vec-
tor
Closed
Loop Vec-
tor
Closed
Loop Vec-
tor (PM)
Standard tuning with rotating
motor
Tunes all motor parameters. 0 No Yes Yes Yes
IM tuning with not rotationg motor
Tunes the basic motor parame-
ters.
1NoYesYesNo
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 posi-
tion.
4 NoNoNoYes
IMPORTANT
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.

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Omron VARISPEED L7 Specifications

General IconGeneral
BrandOmron
ModelVARISPEED L7
CategoryInverter
LanguageEnglish

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