Hitachi X200 Series instruction manual Add Frequency Enable, A001, A145, A146

4−30

Add Frequency Enable

The inverter can add or subtract an offset value to the output frequency setting which is specified by A001 (will work with any of the five possible sources). The ADD Frequency is a value you can store in parameter A145. The ADD Frequency is summed with or subtracted from the output frequency setting only when the [ADD] terminal is ON. Function A146 selects whether to add or subtract. By configuring an intelligent input as the [ADD] terminal, your application can selectively apply the fixed value in A145 to offset (positively or negatively) the inverter output frequency in real time.

Keypad potentiometer

Control terminal

Function F001 setting

ModBus network input

Calculate function output

A145 ADD frequency

Intelligent input

A001 Frequency source setting

+	Σ	Output frequency setting
	+/-
		A146
		ADD direction select
[ADD]

Operations and Monitoring

Option	Terminal	Function Name	State	Description
Code	Symbol
50	ADD	ADD Frequency	ON	Applies the A145 Add Frequency value to the
		Enable		output frequency
			OFF	Does not apply the Add frequency. The output
				frequency retains its normal value

Valid for inputs:	C001~C005
Required settings	A001, A145, A146
Notes:

•A001 may specify any source; the Add Frequency will be added to or subtracted from that value to yield output frequency value.

Example (default input configuration shown—see page 3–49):

		ADD
5	4	3	2	1	L	PCS	P24

See I/O specs on page 4–6.