Add Frequency Enable - Hitachi SJ200 Series Instruction Manual

4–32
Using Intelligent Input Terminals

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
Intelligent input
Option Terminal
Code Symbol
50 ADD
Valid for inputs:
Required settings:
Notes:
•
A001 may specify any source; the Add Frequency
will be added to or subtracted from that value to
yield the output frequency value.
ADD frequency
[ADD]
Input
Function Name
State
ADD Frequency
Enable
C001, C002, C003, C004,
C005, C006
A001, A145, A146
A001 Frequency source setting
Output frequency setting
+ ∑
+/–
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.
Example (requires input configuration—see
page 3–41):
L 6 5
See I/O specs on page 4–6.
A146 ADD direction select
Description
ADD
4 3 2 1 PCS