Jog Operation; Outline Of Jog Operation - Mitsubishi Electric RD77MS2 User Manual

5.2

JOG Operation

Outline of JOG operation

Operation
In JOG operation, the forward run JOG start signal [Cd.181] or reverse run JOG start signal [Cd.182] turns ON, causing
pulses to be output to the servo amplifier from the Simple Motion module while the signal is ON. The workpiece is then moved
in the designated direction.
The following shows examples of JOG operation.
■RD77MS4 operation example
1.
When the START signal turns ON, acceleration begins in the direction designated by the START signal, and continues
for the acceleration time designated in "[Pr.32] JOG operation acceleration time selection". At this time, the BUSY signal
changes from OFF to ON.
2.
When the workpiece being accelerated reaches the speed set in "[Cd.17] JOG speed", the movement continues at this
speed. The constant speed movement takes place at 2. and 3.
3.
When the START signal is turned OFF, deceleration begins from the speed set in "[Cd.17] JOG speed", and continues
for the deceleration time designated in "[Pr.33] JOG operation deceleration time selection".
4.
The operation stops when the speed becomes "0". At this time, the BUSY signal changes from ON to OFF.
[Cd.17] JOG speed
Acceleration for the acceleration
time selected in [Pr.32]
ON
PLC READY signal
[Y0]
OFF
ON
All axis servo ON
[Y1] OFF
ON
READY signal
OFF
[X0]
[Cd.181] Forward run
OFF
JOG start
[Cd.182] Reverse run
OFF
JOG start
BUSY signal
[X10,X11,X12,X13]
OFF
Use the hardware stroke limit function when carrying out JOG operation near the upper or lower limits.
(Page 243 Hardware stroke limit function)
If the hardware stroke limit function is not used, the workpiece may exceed the moving range, causing an
accident.
Deceleration for the deceleration
time selected in [Pr.33]
Forward JOG run
1. 2. 3. 4.
ON
ON
Reverse JOG run
ON
5 MANUAL CONTROL
165
5.2 JOG Operation
5