Hitachi SJ300-037HFE 사용자 설명서

SJ300 Inverter

Configur

ing Dr

iv

e 

P

a

ra

met

e

rs

The acceleration pause function can be 
used to minimize the occurrence of 
over-current trips when accelerating 
high inertia loads. It introduces a dwell 
or pause in the acceleration ramp. You 
can control the frequency at which this 
dwell occurs (A069), and the duration 
of the pause time (A070). This function 
can also be used as an anti-windmilling 
tool, when the load might have a 
tendency to drive the motor in a reverse 
direction while the inverter is in a Stop mode. Initiating a normal acceleration in such a situa-
tion may result in over-current trips. This function can be used to keep the inverter output 
frequency and voltage at low levels long enough to bring the load to a stop, and commence 
turning in the desired direction before the acceleration ramp resumes. See also 

A063
A065
A067

Jump (center) frequency 
setting

Up to 3 output frequencies 
can be defined for the output 
to jump past to avoid motor 
resonances (center 
frequency)
Range is 0.00 to 400.0 Hz

✘ ✔ 0.00 0.00 0.00

Hz

>A063 JUMP

F1     0000.00Hz

>A065 JUMP

F2     0000.00Hz

>A067 JUMP

F3     0000.00Hz

A064
A066
A068

Jump (hysteresis) 
frequency width setting

Defines the distance from 
the center frequency at 
which the jump occurs
Range is 0.0 to 10.0 Hz

✘ ✔ 0.50 0.50 0.50

Hz

>A064 JUMP

W1       00.50Hz

>A066 JUMP

W2       00.50Hz

>A068 JUMP

W3       00.50Hz

Accel pause 

period

Output

frequency

A070

A069

Set frequency

t

0

A069 Acceleration pause 

frequency setting

Range is 0.00 to 400.0Hz

✘ ✔ 0.00 0.00 0.00

Hz

>A069 F-STOP

F      0000.00H

A070 Acceleration pause time 

setting

Range is 0.0 to 60.0 sec.

✘ ✔

0.0

0.0

0.0

sec.

>A070 F-STOP

T          00.0s