Hitachi SJ700-4000HFU2

Chapter 4 Explanation of Functions
4-49
4.2.42 Jogging (JG) command setting
The jogging command setting function allows you to set and finely tune
the motor-stopping position.
To use this function, assign function "06" (JG) to an intelligent input
terminal.
(1) Jog frequency setting
Since the inverter operates the motor with a full voltage for the jogging operation, the inverter can easily trip during
the latter. Adjust the jog frequency setting (A038) properly so that the inverter will not trip.
Item
Function code
Range of data
Description
Jog frequency
setting
A038
0.0 or "start frequency" to
9.99 (Hz)
Setting of the frequency to output during jogging
operation
(2) Jog stop mode
Item
Function code
Data
Description
Jog stop mode
A039
00
Disabling jogging while the motor is operating and
enabling free-running when the motor is stopped
01
Disabling jogging while the motor is operating and
enabling stopping after deceleration when the motor
is stopped
02 (See Note 2.)
Disabling jogging while the motor is operating and
enabling DC braking when the motor is stopped
03
Enabling jogging while the motor is operating and
enabling free-running when the motor is stopped
04
Enabling jogging while the motor is operating and
enabling stopping after deceleration when the motor
is stopped
05 (See Note 2.)
Enabling jogging while the motor is operating and
enabling DC braking when the motor is stopped
Note 1: To perform the jogging operation, always turn on the JG terminal before turning on the FW or RV terminals.
(Follow this sequence of command inputs also when using the digital operator to enter operation commands.)
(Example 1) (Example 2)
Note 2: You must set DC braking data if you specify "02" or "05" for the jog stop mode (A039). (See Section 4.2.19.)
Output
frequency
A038: Jog frequency setting
A039: Jog stop mode
C001 to C008: Terminal [1] to [8] functions
Related code
JG
FW
RV
A038
Output frequency
Output
frequency
FW
JG
FW
JG
When "00", "01", or "02" is specified for the jog stop
mode (A039), the jogging operation will not be
performed if the FW signal is turned on earlier than the
JG signal.
When "03", "04", or "05" is specified for the jog stop mode (A039),
the jogging operation will be performed, even if the FW signal is
turned on earlier than the JG signal. However, the motor will stop
after free-running if the JG signal is turned off earlier than the FW
signal.
Normal
operation
Deceleration
Free running
Jogging operation
Acceleration according to the setting of "b088"