Hitachi SJ100 Jogging Command, value is 0 Hz, •00 Free-runstop (coasting), •02 Use DC braking and stop, •01 Deceleration (normal level) and stop

4–12

Using Intelligent Input Terminals

Jogging Command

The Jog input [JG] is used to command the motor to rotate slowly in small increments for manual operation. The speed is limited to

10 Hz. The frequency for the jogging operation is set by parameter A_38. Jogging does not use an acceleration ramp, so we recommend setting the jogging frequency A_38 to 5 Hz or less to prevent tripping.

When the terminal [JG] is turned ON and the Run command is issued, the inverter outputs the programmed jog frequency to the motor. To enable the Run key on the digital operator for jog input, set the value 01(terminal mode) in A_02 (Run command source).

[JG] 1 0

[FW], 1 [RV] 0

Jog

speed

A 38

A 39 Jog decel type

t

The type of deceleration used to end a motor jog operation is selectable by programming function A_39. The options are:

•00 Free-run stop (coasting)•01 Deceleration (normal level) and stop•02 Use DC braking and stop

Operations and Monitoring

Option

Terminal

Function Name

Input

Description

Code

Symbol

State

06

JG

Jogging

ON

Inverter is in Run Mode, output to motor runs at

jog parameter frequency

OFF

Inverter is in Stop Mode

Valid for inputs:

C_01, C_02, C_03, C_04,

Example (requires input configuration—see

C_05, C_06

page 3–34):

Required settings:

A_02= 01, A_38 > B_82,

A_38 > 0, A_39

JG

L

6

5

4

3

2

1

P24

Notes:

•No jogging operation is performed when the set

value of jogging frequency A_38 is smaller than the start frequency B_82, or the value is 0 Hz.

•Be sure to stop the motor when switching the function [JG] ON or OFF.

See I/O specs on page 4–6.