Hitachi SJ Series, User Manual

Page: 241 / 786

12-9-24
Chapter 12 Inverter Function
Set-up procedures of IVMS start mode
Set the protection for the PM motor.
• Setting the over current detection level [bb160]
• Setting the electronic thermal level [bc110]
Set the PM motor's Plate Data.
• Setting the capacitance [Hd102]
• Setting the number of poles [Hd103]
• Setting the base frequency [Hd104]
• Setting the maximum frequency [Hd105]
• Setting the rated voltage [Hd106]
• Setting the rated current [Hd108]
Set the PM motor constants.
• Setting the motor constant R [Hd110].
• Setting the motor constant Ld [Hd112].
• Setting the motor constant Lq [Hd114].
• Setting the motor constant Ke [Hd116].
• Setting the motor constant J [Hd118].
Conduct the IVMS auto-tuning
• Set the control mode [AA121] at 12 (SM-IVMS).
• Set the auto-tuning selection [HA-01] at 03 (IVMS).
• Input the command for starting the auto-tuning
(operation command).
• The inverter is in an automatic operation.
• Tuning is finished.
• The over-current detection level should be set
appropriately by taking into account the maximum
current (demagnetization level) of the PM motor to
be used. Set the over-current detection level so
that the SM (PMM)'s maximum current
(demagnetization level) is not below 150% of the
over-current detection level.
• See also "12.7.1 Conduct the electronic thermal
protection on motors," and set it appropriately
• See also "12.3.1 Set plate data of motor as
parameters," and set them appropriately.
• See also "12.3.2 Set Motor Constants" and set
them appropriately.
• For the procedures from the auto-tuning start to the
auto-tuning finish, check "12.3.3 Auto-tune
motor," and follow the procedures.
• In the IVMS auto-tuning, the tuning should be done
as the motor shaft is being rotated little by little.
When the motor shaft is locked, or when the load is
heavy, even a normal finish of the auto-tuning may
result in a adjustment failure. Conduct the IVMS
auto-tuning with nothing attached to the motor
shaft.
• When an over current occurs during the automatic
operation of the IVMS auto-tuning, check the
following items.
(1) Motor lock caused by braking and/or foreign
objects.
(2) Setting over-current detection level [bb160]
Check these items, and when there is no problem,
conduct the IVMS auto-tuning by incrementing the
minimum pulse width adjustment [Hd-50] by 10
each time.
• It may take approximately 5 minute to conduct the
IVMS auto-tuning.
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