Hitachi L200 Manual Do Utilizador

Using Intelligent Input Terminals

Oper

ations

and Monitor

ing

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.   

A001

Function F001 setting

Control terminal

ModBus network input

Calculate function output

Keypad potentiometer

A145

 +

∑

 +/–

ADD frequency

Frequency source setting

Output frequency setting

[ADD]

Intelligent input

A146 ADD direction select

50

ADD

ADD Frequency 
Enable

ON

Applies the A145 Add Frequency value to the 
output frequency.

OFF

Does not apply the Add Frequency. The output 
frequency retains its normal value.

C001, C002, C003, C004, 
C005

A001, A145, A146

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

Example (requires input configuration—see 
page 

):

See I/O specs on page 

.

ADD

1

2

3

4

5

L

PCS