Hitachi WJ Series User Manual page 127

Chapter 8
■ When using a Hitachi standard induction motor
Code
Async. Motor constant
*1
[H002]
selection
Async. Motor constant R1
*1
[H020]
(primary resistance)
Async. Motor constant R2
*1
[H021]
(secondary resistance)
Async. Motor constant L
[H022] *1
(leakage inductance)
Async. Motor constant I0 (no-
[H023] *1
load current)
Async. Motor constant J
*1
[H024]
(moment of inertia)
Motor cable length code
[b033]
selection
*1. "2nd-motor control [SET]" target parameter. The second control parameter is also subject to setting.
 The base (maximum) frequency is obtained from the rated speed of the motor (min
!
number of poles as follows.
Base (maximum) frequency (Hz) =
Mandatory Setting for Motor Drive and Test Run
Item
Applies Hitachi standard motor
constants ([H020]
Motor constant parameter of
Hitachi standard induction
motor.
When the IM motor capacity or
the number of IM motor poles is
changed, it is initialized to the
corresponding Hitachi standard
motor constant.
It is also possible to adjust and
change it manually.
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.
Rated speed (min
8-1-14
Description
*1 *1
to [H024] ).
0.001 to 65.535 (Ω)
0.001 to 65.535 (Ω)
0.01 to 655.3 (mH)
0.01 to 655.35 (A)
0.001 to
9999.000 (kgm
-1
) × Number of poles (poles)
120
Data
00
2 )
5 to 20
-1
) and the