Mitsubishi Electric QD77MS User Manual page 172

Current value per cycle after main shaft gear, current value per cycle after
auxiliary shaft gear when starting synchronous control
The current value per cycle after main shaft gear/current value per cycle after auxiliary
shaft gear is restored as follows according to the main input axis/auxiliary shaft operation
executed before starting synchronous control.
Operation of main input axis /
auxiliary shaft
(Before synchronous control start)
OPR
Current value change
(Note-1)
Speed control
Fixed-feed control
Speed-position switching control
(Note-1)
Position-speed switching control
(Note-1)
Connection to servo amplifier
Connection to synchronous
encoder
Others
(Note-1): When "[Pr.300] Servo input axis type" is either "1: Feed current value" or "2: Real current value", and
when "[Pr.21] Feed current value during speed control" is "2: Clear feed current value to zero" only.
Restoration method 1): The new value of the current value per cycle after main shaft
[Main shaft]
Current value per cycle
after main shaft gear
[Auxiliary shaft]
Current value per cycle
after auxiliary shaft gear
Chapter 5 Synchronous Control Initial Position
Servo input axis
Absolute position
detection system valid
Restoration method 1)
Restoration method 1)
Restoration method 1)
Restoration method 1)
Restoration method 1)
Restoration method 1)
Restoration method 2)
Restoration method 2)
gear/current value per cycle after auxiliary shaft gear is calculated
based on the current value after composite main shaft
gear/auxiliary shaft current value.
Main shaft gear
=
ratio
Auxiliary shaft gear
=
ratio
5 - 4
Absolute position
detection system invalid
Restoration method 1)
—
Current value after
composite main shaft gear
Auxiliary shaft current value
Synchronous
encoder axis
—
Restoration method 1)
—
—
—
—
—
Restoration method 1)
Restoration method 2)