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8. TANDEM DRIVE
2) Operation example for normal mode
a) Start operation method
1. Adjust the axis linking the master axis and slave axis mechanically at a right angle to the
movement direction.
2. Set the home position return method (parameter No.0240) to scale home position signal
detection method and tandem drive option (parameter No.0265) to normal mode.
3. Start home position return operation.
4. After home position return is complete, read the tandem drive home position signal offset
(parameter No.026C, 026D) and save it to the user program.
b) Timing chart
ON
OFF
ON
OFF
ON
OFF
Master Axis
Slave Axis
Tandem drive home position signal offset
Home position
(Note 2)
(Note 1)
Home position
(Note 2)
(Note 1)
Creep speed
Start up
Proximity dog
Limit switch
Proximity dog
Limit switch
Home position return direction
Home position return speed
Home position
signal (Z-phase)
(master axis)
Home position
signal (Z-phase)
(slave axis)
Home position
return complete
(ZP)
Note 1. When a limit switch signal is detected, an alarm occurs and execution of home position return is terminated.
Position the proximity dog in front of the limit switch signal.
(As shown in the diagram, position the proximity dog signal so that it overlaps the limit switch signal.)
2. Set the distance between the master axis/slave axis home position signals and the proximity dog so that it is greater
than the deviation at maximum tolerance of the master axis and slave axis.