Hitachi WJ C1 Series User Manual

Chapter 8 Mandatory Setting for Motor Drive and Test Run
8-3-1
8.3 Carrying Out Motor Auto-tuning
8.3.1 Procedure for Auto-tuning of an Induction Motor
 How to use a motor other than the Hitachi standard induction motor?
 How to solve the unstable drive of the motor?
 What should be done if the environment of the adjusted motor has changed?
 What should be done if wiring was re-performed from the test run condition?
 What should be done if the motor and wiring were replaced?
 The auto-tuning function measures the required motor constants and sets them automatically to
increase the accuracy of automatic torque boost, sensorless vector control, etc.
 When using a motor whose motor constants are unknown, perform auto-tuning to measure the
motor constants.
 "Motor rotate" and "Motor not rotate" can be selected for auto-tuning. Select according to the
situation.
 The measured motor constants are data (including wiring) for one phase of Y connection.
 The motor constants of Hitachi standard induction motor are set as default value. When using a
Hitachi standard induction motor, characteristics can be obtained without problems in most
cases even if auto-tuning is not performed.
 Smooth tuning could be done if the auto-tuning is first performed for the factory-set parameters.
 The motor capacity that can be measured is the maximum applicable capacity and one size
smaller capacity. Otherwise, the correct constants may not be obtained. When performing auto-
tuning with one size smaller capacity motor, set "Overload restriction 1 mode selection [b021]"
to "Enable during accel. and constant speed (01)", and set "Overload restriction 1 active level
[b022]" to 1.5 times the motor rated current.
■ When using the motor constant of auto-tuning
Code
Item
Description
Data
[H001]
Auto-tuning selection
Disable
00
Enable without rotation
01
Enable with rotation
02
[H002]
*1
Async. Motor constant
selection
Auto-tuning data
(Apply [H030]
*1
to [H034]
*1
)
02
[H003]
*1
Async. Motor capacity
Set according to the specifications of the
motor.
0.1 to 18.5 (kW)
[H004]
*1
Async. Motor number of
poles
Set according to the specifications of the
motor.
2/4/6/ to /46/48 (poles)
[H030]
*1
Async. Motor constant R1
(Auto-tuning data)
Parameter for setting the motor constant
when performing auto-tuning.
When using these parameters, set
"Async. Motor constant selection
[H002]
*1
" to "Auto-tuning data (02)". After
performing auto-tuning, it is also
possible to adjust and change it
manually.
0.001 to 65.535 (Ω)
[H031]
*1
Async. Motor constant R2
(Auto-tuning data)
0.001 to 65.535 (Ω)
[H033]
*1
Async. Motor constant I0
(Auto-tuning data)
0.01 to 655.35 (A)
[H034]
*1
Async. Motor constant J
(Auto-tuning data)
0.001 to
9999.000 (kgm
2
)
[A003]
*1
Base frequency
Set according to the specifications of the
motor.
30.0 to
Maximum frequency (Hz)
[A045]
*1
Output voltage gain
If an appropriate value does not exist in
[A082], adjust it.
20 to 100 (%)
[A082]
*1
Motor rated voltage
Set according to the specifications of the
motor.
200 V: 200/215/220/
230/240 (V)
400 V: 380/400/415/
440/460/480 (V)
[b033]
Motor cable length code
selection
Parameter that corrects the current detection
accuracy due to difference in motor cable
length. If the motor constant cannot be
measured correctly, set higher value.
5 to 20
*1. "2nd-motor control [SET]" target parameter. The second control parameter is also subject to setting.
Q
A
!

Hitachi WJ C1 Series Specifications

General

Brand	Hitachi
Model	WJ C1 Series
Category	Inverter
Language	English