Hitachi SJ Series, User Manual

Page: 167 / 786

12-3-8
Chapter 12 Inverter Functions
Offline auto-tuning
Check the control type [AA121].
For the induction motor (IM), make sure that the
control type [AA121] is set to the one for IM. For
the synchronous motor (SM) or permanent
magnetic motor (PMM), make sure that the
control type [AA121] is set to the one for PMM.
Set the auto-tuning selection [HA-01].
In the auto-tuning selection [HA-01], 01:
Non-revolving or 02: Revolving is set. The tuning
does not begin at this stage. Only “non-revolving”
can be chosen for synchronous motor (SM) /
permanent magnetic motor (PMM).
Set a start command for tuning.
Pressing OPERATION button on the operator
keypad starts the tuning, Pressing STOP button
terminates the tuning, However tuning data are
not saved.
The inverter automatically operates.
Output of a preset pattern is given to the motor. If
the auto-tuning selection [HA-01] is set to 01:
Non-revolving, non-revolving output of three
different patterns is given.
If the auto-tuning selection [HA-01] is set to 02:
Revolving, acceleration and deceleration are
repeated twice in addition to the above output.
The frequency increases up to 80% of the base
frequency.
After the above operation finishes, the output
with no revolution is checked as final check.
The tuning finished.
When the tuning End display appears, the tuning
finishes. Use STOP key to cancel the End
display.
Online auto-tuning
Perform the offline auto-tuning.
The online auto-tuning works with the
designated motor constants and the offline
auto-tuning described on the left is performed.
The online tuning selection [HA-03] is set.
Set the online tuning selection [HA-03] to 01:
Enabled.
Check the online auto-tuning.
The online tuning operates for up to 5 s when
every operation stops. Use the online tuning after
making sure that the operation and stop can be
made correctly by your operation command.
• In case of termination due to trip or erroneous
tuning, correct data cannot be acquired. See the
next section.
• The result of the online tuning is automatically
reflected in up to 5 s after the stop. It is not
reflected if the operation is restarted during the
tuning.
• The online tuning is not performed if the servo-on
function [SON] or forcing function [FOC] is
working.
• In the factory setting, the offline auto-tuning can be
started by the operation key on the operator
keypad. It can be changed to a designated
operation command by changing the operation
command [HA-02] of the auto-tuning.
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