9.5 Electronic Clutch Function
9-25
9.5.5 Phase Specification Clutch OFF Function
What is phase specification clutch OFF function?
• The "phase specification clutch OFF function" is a function for disconnecting an electronic
clutch (OFF) at an arbitrarily specified phase. For stopping or starting at the same phase
repeatedly, the control without variance can be performed. This function is available since
FP7 MC Unit Ver. 1.20.
• However, select "Direct" for the clutch OFF method. When selecting "Slip", variation in stop
position is caused because it stops after the elapse of a slip time from a stop phase
arbitrarily set.
Clutch OFF method (Direct)
When performing the OFF request by the I/O signal, the clutch off operation will be executed
regardless of phase.
OFF
ON
100%(0%)
0%
50%
t
t
Phase after clutch
control
I/O X clutch
connection
state annunciation
Disconnected
Connected
Slave axis
(e.g. Rotary cutter)
Clutch request is OFF.
Clutch is OFF.
I/O Y clutch ON
request
Master axis
Current value after
unit conversion
Phase
Current value
Using the "phase specification clutch off function" disconnects a clutch when the phase
reaches the set phase (0%) after the clutch off request by the I/O signal.
OFF
ON
100%(0%)
0%
50%
t
t
It does not turn OFF until
the phase after clutch control
reaches the set value.
Clutch OFF setting phase
Current value
Phase after clutch
control
I/O X clutch
connection
state annunciation
Disconnected
Connected
Phase
Slave axis
(e.g. Rotary cutter)
I/O Y clutch ON
request
Master axis
Current value after
unit conversion
(Note 1): The above figure shows the case that the both clutch ON request and OFF request are set to "Level". Also,
either "Leading edge" or "Trailing edge" can be selected.
(Note 2): The above figure shows the case that the clutch off setting ratio is set to “0%”. It can be set to 0 to 99%.
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