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Control Details For Cam Function - Mitsubishi Electric QD77MS User Manual

Simple motion module.
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3.1 Control details for cam function

The output axis for synchronous control is operated with a cam.
The following operations can be performed with cam functions.
• Two-way operation: Reciprocating operation with a constant cam strokes range.
• Feed operation
• Linear operation
The output axis is controlled by a value (feed current value), which is converted from the input
value (cam axis current value per cycle) by cam data.
Two-way operation
Cam data
(User created cam)
Feed operation
Cam data
(User created cam)
Linear operation
Cam data
(Linear cam: Cam No.0)
: Cam reference position is updated every cycle.
: Linear operation (cam No.0) in the cycle as the stroke ratio is 100%.
Cam axis current
value per cycle
Cam
conversion
processing
Feed current value
Cam axis current
value per cycle
Cam
conversion
processing
Feed current value
Cam axis current
value per cycle
Cam
conversion
processing
Feed current value
3 - 2
Chapter 3 Cam Function
Cam reference
Cam reference
position
position
(At 1st cycle)
(At 2nd cycle)
Cam reference
Cam reference
position
position
(At 1st cycle)
(At 2nd cycle)
Cam reference
position
(At 3rd cycle)
Cam reference
position
(At 3rd cycle)
Stroke amount 100%
t
t
t
t
t
t

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