Hitachi SJ300 Series manual 163

4–25

SJ300 Inverter

Software Lock When the terminal [SFT] is turned ON, the data of all the parameters and functions (except the output frequency, depending on the setting of B031) is locked (prohibited from editing). When the data is locked, the keypad keys cannot edit inverter parameters. To edit parameters again, turn OFF the [SFT] terminal input.

Use parameter B031 to select whether the output frequency is excluded from the lock state or is locked as well.

Opt.

Symbol

Function Name

Input

Description

Code

State

15

SFT

Software Lock

ON

The keypad and remote programming

devices are prevented from changing

parameters

OFF

The parameters may be edited and stored

Valid for

C001, C002, C003, C004,

Example: (Requires input configuration—

inputs:

C005, C006, C007, C008

see page 3–47. Jumper position shown is

for –xFU/-xFR models; for –xFE models,

Required

B031 (excluded from lock)

see page 4–12.)

settings:

SFT

Notes:

TH

FW

8

CM1

5

3

1

• When the [SFT] terminal is turned ON, only

PLC

CM1

P24

7

6

4

2

the output frequency can be changed.

•Software lock can include the output frequency by setting B031.

• Software lock by the operator is also possible without the [SFT] terminal being used (B031).

See I/O specs on page 4–9.

Operations Monitoring and