Hitachi SJ-FB Instruction Manual page 20

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(Note 6) : If satisfactory performance can not be obtained, please adjust the motor constant for the
phenomena according to following table.
Status
of
Phenomena
running
The
shock
At starting
occurred at starting
At
Unstable of motor
deceleration
rotation
Insufficient
During
during torque limit at
torque limit
low speed
At low
frequency
Irregular of rotation
operation
Contents of adjustment
is
Set "Motor constant J" bigger and bigger
slowly until 1.2 times for preset constant.
Set speed response smaller.
Set "Motor constant J" smaller for preset
Constant.
torque
Set overload restriction level lower than torque
limit level
Set "Motor constant J" bigger for preset
constant.
20
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Chapter 6
OPERATION
Adjusting
parameter
H024/H034
H005
H024/H034
b021
b041-b044
H024/H034

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