Hitachi SJ Series User Manual page 216

Chapter 12
12.8.6 Make the frequency follow
the command instantaneously
Q
• To output the frequency in such a manner as the
analog command requires it.
• To make the motor follow the command as fast as
possible.
A
• If the acceleration or deceleration cancel [LAC]
function is selected as the input terminal function
selection and the signal is turned ON, the
acceleration or deceleration time becomes ignored
and the output frequency is made instantaneously
to follow the set frequency.
Item
Input terminal
function selection
Analog frequency command
Following
the
command
ON
[LAC]
Parameter
[CA-01]~[CA-11]
Output frequency
ON
12-8-11
!
• As the use of the acceleration or deceleration
cancellation function makes the output follow the
command, a large amount of increase/decrease in
the frequency demanded by the command may
cause a trip.
• [LAC] function is valid for any frequency command
such as one from parameter set-up, one from the
communication, and so on.
Data
Acceleration or deceleration cancellation
function [LAC] is selected.
071
Canceling the acceleration or deceleration
and making the output follow the command.
Follow the acceleration or
deceleration time
Time
Inverter Function
Description