Hitachi SJ Series, User Manual

Page: 166 / 786

12-3-7
Chapter 12 Inverter Functions
• The constants of Hitachi’s standard induction
motor (IE3 motor) are used as default in the
factory setting. If you use Hitachi’s standard
induction motor, expected characteristics will be
achieved without offline auto-tuning in most
cases .
• Smooth tuning could be done if the offline
auto-tuning is first performed for the factory-set
parameters.
• If you use a synchronous motor SM (or permanent
magnet motor PMM), perform the tuning after the
control type [AA121] is set to 11 (SM/PMM:
Synchronous activation) or 12 (SM/PMM: IVMS
activation).
• If expected characteristics cannot be achieved,
adjust the parameters and motor constants.
• Perform the offline auto-tuning before using the
online auto-tuning function.
Parameter data
overwritten in the offline auto-tuning
*The above table shows the case where [SET]
terminal is OFF or not selected. If [SET] terminal is
made ON and the secondary setting is used, the
parameters of [H*21*] ([Hb210], [Hd210], etc.) are
effective and overwritten according to the
selection of the control type [AA221].
IVMS auto-tuning
• If a high torque is necessary for activation,
Hitachi’s original IVMS control is used. If 03 is
chosen for the auto-tuning selection [HA-01], it can
be detected whether the target motor can be
driven with the IVMS control, although
combination check should be made in advance.
Contact our sales personnel.
• The motor constants are for a single phase of
Y-connection.
• The offline auto-tuning is performed only when the
operation can be made.
• If no-load current is not known, check the current
in the operation at the base frequency with the V/f
control by using an electric current monitor and
enter the value to [Hb116] before the auto-tuning.
• Even if 01 (non-revolving) is chosen for [HA-01],
the motor could rotate slightly.
• The offline auto-tuning automatically overwrites
the parameters with acquired data. The online
auto-tuning does not overwrite the parameters
with the data as it corrects internal data.
• The tuning with the IVMS control should be
performed on an independent motor with the
control type [AA121] set to 12 (SM/PMM: IVMS
activation).
• In case of failure of the auto-tuning with the IVMS
control, data necessary for the IVMS control
cannot be obtained from the motor and the control
type [AA121] should be set to 11 (SM/PMM:
Synchronous activation) to drive the motor.
Selection of IM/SM
Parameters to be overwritten
Non-revolving tuning [HA-01]=01
Revolving tuning [HA-01]=02
Induction motor (IM) control
[AA121]=00~10
[Hb110] Motor constant R1
[Hb112] Motor constant R2
[Hb114] Motor constant L
[Hb110] Motor constant R1
[Hb112] Motor constant R2
[Hb114] Motor constant L
[Hb116] Motor constant I0
[Hb118] Motor constant J
Control of synchronous motor
(permanent magnetic motor)
(SM (PMM))
[AA121]=11~12
[Hd110] Motor constant R
[Hd112] Motor constant Ld
[Hd114] Motor constant Lq
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