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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
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
Jog stop mode A039
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"