Hitachi J300U Series External frequency, Setting end, Same as A26, Initial value Setting method

8 V 10 V Frequency

4 V 5V command

16.8 20mA

10 V Frequency

5 V command

20 mA

Extension

function

code

Contents and display

Set the frequency for starting output for an external frequency command (0 to 10 V, 0 to 5 V,

4 to 20 mA) and the frequency for ending output. When 0 Hz is set, this function will be canceled.

External frequency setting start

External Frequency setting end

External frequency	Initial value		➤
setting start	.	(Hz)	60
Setting method			50
		frequencyOutput
	➤
➤
	➤
FUNC	2	1	30
	➤
FUNC	(400)		0
			0
External frequency			4
		Output
setting end			60
		frequency
Same as A26		(Hz)

0	2
0	1
4	7.2

Start setting command (20%)

NOTE 1: The standard setting is 0 Hz. In this case, the selected V/f pattern is used for running.

NOTE 2: When changing the V/f pattern after A 26 (start) and A 27 (end) are set, readjust A 26 (start) and A 27 (end).

NOTE 3: When A 26 (start) > A 27 (end) is set and the frequency command value is minimized (0 V or 4 mA),

➤the output frequency may be

lowered than the value which is set by A 26 by 0.1 to 0.3 Hz. The reason is that it is judged that there is some frequency due to noise on the signal line and it is a normal operation.

NOTE 4: The setting shown left is also possible with F31 of the remote operator.

End setting command (80%)

Instanta- neous restart selection

Set the inverter retry method when a power error occurs. Select the set value of the retry method to be used.

Initial value

Setting method		➤
	2	1
		➤
FUNC	Initial value		FUNC
	➤		➤

Set value Function

0Alarm output after tripped

1Deceleration stop at the time

of restart

2	Frequency matching start at the time
	of restart ( Note 1)
3	0 Hz start at the time of restart

Restart selection

NOTE 1: When the base frequency is one of the following ones, frequency matching may restart at 0 Hz. When the base frequency is 60 Hz: Driven at 40 Hz or less

When the base frequency is 50 Hz: Driven at 30 Hz or less

For other precautions, refer to Chapter 1, "Instantaneous stop restart" of Appendix 2.

NOTE 2: Since the retry mode is selected, the equipment restarts for trips of overcurrent, overvoltage, or undervoltage. For undervoltage, 16 retries (17th trip) are executed.

For overcurrent or overvoltage, 3 retries (fourth trip) are executed.

Do not use this function for a case that a fallen substance should be held by the machine brake when the motor is in the free-run mode.

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