Mitsubishi Electric MELSEC-Q Series - Speed Control with Fixed Position Stop

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6 POSITIONING CONTROL
6.19 Speed Control with Fixed Position Stop
Speed control with fixed position stop of the specified axis is executed.
Speed control with fixed position stop is started using the PVF (forward rotation) or
PVR (reverse rotation) of servo program instruction.
Servo
instruction
Positioning
method
Number of
control axes
Items set using MT Developer2
Speed
change
Common Arc/Helical Parameter block Others
Parameter block No. Axis Address/travel value Command speed Dwell time M-code Torque limit value Auxiliary point Radius Central point Interpolation control unit Speed limit value Acceleration time Deceleration time Rapid Stop deceleration time Torque limit value Deceleration processing on stop input Allowable error range for circular interpolation S-curve ratio Advanced S-curve acceleration/deceleration Cancel WAIT-ON/OFF Fixed position stop accel./decel.time Fixed position stop
PVF
Absolute 1
Valid
PVR
: Must be set
: Set if required
[Control details]
(1) After starting of servo motor, control at the specified speed is executed until the
fixed position stop command turns on.
• PVF...... Forward rotation direction (Address increase direction) start
• PVR...... Reverse rotation direction (Address decrease direction) start
(2) When the fixed position stop command turns on, a positioning control to the
specified address is executed.
359.99999[degree]
0[degree]
Current value
Servo program
start
[Positioning address :180.00000[degree]]
OFF
ON
180.00000[degree]
ON
OFF
Fixed position stop
command device
(3) It can be controlled in the real mode only for axis which "control unit is [degree]
and stroke limit is invalid ("upper stroke limit value" equal to "lower stroke limit
value")". If it is started for axis which "control unit is except [degree] or stroke limit
is not invalid", a minor error (error code: 130) occurs and it does not start.
And, if it is started for the virtual servo motor axis in the virtual mode, a servo
program setting error (error code: 905) occurs and it does not start. (It can be
started for real mode axis.)