Hitachi NB616X instruction manual Set Motor constant J bigger and bigger H024/H034

Chapter 6 OPERATION

(Note 6) : If satisfactory performance can not be obtained, please adjust the motor constant for the phenomena according to following table.

Status	of	Phenomena			Contents of adjustment	Adjusting
running						parameter
At starting		The	shock	is	Set “Motor constant J” bigger and bigger	H024/H034
		occurred at starting			slowly until 1.2 times for preset constant.
At		Unstable	of	motor	Set speed response smaller.	H005
					Set “Motor constant J” smaller for preset
deceleration		rotation				H024/H034
					Constant.
During		Insufficient		torque	Set overload restriction level lower than torque	b021
torque limit		during torque limit at			limit level￿	b041-b044
		low speed
At low					Set “Motor constant J” bigger for preset
frequency		Irregular of rotation				H024/H034
operation					constant.

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