Hitachi J300U Series instruction manual Carrier

[NOTES]

*1: If the desired characteristic cannot be obtained in a sensorless vector control operation with auto tuning measured data, adjust the motor constant according to the detected symptom shown below.

(DOP, DRW, HOP, and HRW functions of the remote operator are needed for this adjustment.)

Operation	Symptom	Adjustment		Adjusting Item
Status			(DOP/DRW Function No.)
Power running	When low frequency	Increase the motor constant R1 in relation to	[F-05 AUX R1]
(status with an	(a few Hz) torque is	auto tuning data step by step within 1.2 times.
accelerating	insufficient
torque)
	When the speed
	fluctuation coeffi-	Increase the motor constant R2 in relation to	[F-05 AUX R2]
	cient becomes	auto tuning data step by step within 1.2 times.
	minus
	When the speed
	fluctuation coeffi-	Decrease the motor constant R2 in relation to	[F-05 AUX R2]
	cient becomes plus	auto tuning data step by step within 0.8 times.
Regeneration	When low frequency	1) Increase the motor constant R1 in relation	[F-05 AUX R1]
(status with a	(a few Hz) torque is	to auto tuning data step by step within 1.2
decelerating	insufficient	times.
torque)		2) Decrease the motor constant M in relation	[F-05 AUX M]
		to auto tuning data step by step within 0.8
		times.
		3) Decrease the carrier frequency set value.	[F-36 CARRIER]
			(			for digital
				A	10
		Combine the methods 1) to 3) above to adjust	operator
		the motor constant.

A-7