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6 SERVO MOTOR DRIVING
6.4 Jog mode (jg)
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Operation
Switching on "Controlword bit 4 (Rotation start)" starts rotation to a direction specified with "Controlword bit 5 (Direction)", and
switching off "Controlword bit 4 (Rotation start)" executes a positioning to the closest station position where the servo motor
can decelerate to a stop. Note that the speed may not reach the specified speed because the shaft stops with the set time
constant, depending on the setting value of deceleration time constant.
Jog operation in the indexer method
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Setting
Set objects and parameters as shown below according to the purpose of use. In this operation, "Target point table" is
disabled.
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Operation
Switching on "Controlword bit 4 (Rotation start)" starts rotation to a direction specified with "Controlword bit 5 (Direction)", and
switching off "Controlword bit 4 (Rotation start)" makes deceleration to a stop regardless of the station position.
Item
Object to be used
Setting
Rotation direction selection
Controlword
Set the rotation direction in "Controlword bit 5 (Direction)". The setting is
shown as follows:
Off: Station No. decreasing direction
On: Station No. increasing direction
Start/stop
Controlword
Set start/stop in "Controlword bit 4 (Rotation start)". The setting is shown as
follows:
On: start
Off: stop at a station which is the closest and possible to decelerate to a
stop
Item
Object/parameter to be used
Setting
Jog mode (jg) selection
Modes of operation
Set "-100".
JOG operation selection
[Pr. PT27]
_ _ 1 _: Select jog operation.
Servo motor speed
Profile velocity
Set the servo motor speed.
Acceleration time constant
Profile Acceleration
Set the acceleration time constant.
Deceleration time constant
Profile deceleration
Set the deceleration time constant.
Speed limit
Max profile velocity
Set a limit value of operation speed.
Item
Object to be used
Setting
Rotation direction selection
Controlword
Set the rotation direction in "Controlword bit 5 (Direction)". The setting is
shown as follows:
Off: Station No. decreasing direction
On: Station No. increasing direction
Start/stop
Controlword
Set start/stop in "Controlword bit 4 (Rotation start)". The setting is shown as
follows:
On: start
Off: decelerate to a stop regardless of the station position