Hitachi SJ300-037HFE 사용자 설명서

SJ300 Inverter

Configur

ing Dr

iv

e 

P

a

ra

met

e

rs

The RUN and PGM LEDs tell just part of the story; 
Run Mode and Program Modes are independent 
modes, not opposite modes. In the state diagram to 
the right, Run alternates with Stop, and Program 
Mode alternates with Monitor Mode. This is a very 
important ability, for it shows that a technician can 
approach a running machine and change some 
parameters without shutting down the machine.

The occurrence of a fault during operation will 
cause the inverter to enter the Trip Mode as shown. 
An event such as an output overload will cause the 
inverter to exit the Run Mode and turn OFF its 
output to the motor. In the Trip Mode, any request 
to run the motor is ignored. You must clear the 
error by pressing the Stop/Reset switch. See 

.

The inverter can be in Run Mode (inverter output is controlling motor) and still allow you to 
edit certain parameters. This is useful in applications that must run continuously, yet need some 
inverter parameter adjustment.

The parameter tables in this chapter have a column titled “Run Mode 
Edit.” An Ex mark 

✘ means the parameter cannot be edited; a Check 

mark 

✔ means the parameter can be edited. You’ll notice in the table 

example to the right the two adjacent marks: “

✘ ✔”. The two marks 

(that can also be “

✘ ✘” or “✔ ✔”) correspond to these levels of access 

to editing:

• Low-access level to Run Mode edits (indicated by left-most mark)

• High-access level to Run Mode edits (indicated by right-most mark)

The Software Lock Setting (parameter B031) determines the particular access level that is in 
effect during Run Mode and access in other conditions, as well. It is the responsibility of the 
user to choose a useful and safe software lock setting for the inverter operating conditions and 
personnel. Please refer to 

 for more information.

The motor control program in the SJ300 
inverter has several sinusoidal PWM 
switching algorithms. The intent is that you 
select the best algorithm for the motor 
characteristics in your application. Each 
algorithm generates the frequency output in 
a unique way. Once configured, the 
algorithm is the basis for other parameter 
settings as well (see 

). Therefore, 

choose the best algorithm early in your 
application design process.

RUN

STOP

Run

Stop

Monitor

Program

RUN

STOP

STOP

Run

Stop

Fault

Trip

Fault

✘ ✔

Output

V/f control,

 constant torque

V/f control,

variable torque

V/f control, free-

setting curve

Sensorless vector 

(SLV) control

SLV control,
0Hz domain

 Vector control with 

sensor