Hitachi J300U Series instruction manual Select the motor capacity which is the most approxi

No.	Operation conditions	Phenomena	Improvements		NOTE: The setting methods shown below			Display, etc.
						apply to DOP and DRW operations.
5	Parallel motor operation	Operation cannot be started at high	1. When sensor-less vector control is selected
		torque, since the inverter does not
				Function mode
		know the load sharing of the
				• F-04
		motors.					12.3 Function mode
				CONTROL SLV ➝ VC
							F-04 (P.12-5)
						Reset to V/f control.
							A	1
			Select the motor capacity which is the most approxi-				The sensor-less vector
			mate to the total capacity of the motors used.
							control is not applicable
			(For example, 7.5 kW, 5.5 kW, and 3.7 kW.)				to multi-motor parallel

Function mode

operation.

A-23

Total capacity of the motors: 7.5 + 5.5 + 3.7 = 16.7kW

• F-05

AUX K 022.00 kW ➝ 015.00 kW

Select the most approximate value to the total capacity.

If two or more motors are changed in operation, select the most approximate value to the motor capacity.

Example 1: One 5.5 kW motor is used

• F-05

AUX K 022.00 kW ➝ 005.50 kW

Select the most approximate value.

Example 2: One 5.5 kW motor is changed into parallel operation of four 5.5 kW motors

Total capacity of the motors: 5.5 × 4 = 22.0 kW

• F-04

AUX K 005.50 kW ➝ 022.00 kW

Select the most approximate value.