Mitsubishi A1SD75P1-S3, User Manual

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MELSEC-A
12 CONTROL AUXILIARY FUNCTIONS
(e) Restrictions during continuous path control
• Continuous path control can only be used in the control of 1 axis at a time.
Continuous path control cannot be used in 2-axis interpolation control.
Positioning deviation may occur if continuous path control is used in 2-
axis interpolation control.
•
Continuous path control can only be used in control in the same direction.
The positioning will deviate if continuous path control is used in control in
which the direction reverses.
Use continuous positioning control when carrying out control in which the
direction reverses in the stepping motor mode.
(f) Restrictions on INC commands
Do not use an INC command to carry out positioning in the reverse
direction after a JOG operation stop or positioning stop.
If positioning in the reverse direction is carried out by INC command after
JOG operation stop or positioning stop, it may be positioned 1 pulse more
than the command pulses.
(g) Restrictions on electronic gears
Vibration may occur if the "movement amount per pulse" value is small in
the stepping motor mode.
The use of a 1/1 ratio "movement amount per pulse" value is
recommended.
(h) Standard motor and stepping motor mode changeover control
is not possible
The position command range and speed command range differ between
the stepping motor mode and standard mode.
Because of this, it is not possible to use the stepping motor mode and
standard mode by changing over between them.
Normal control cannot be carried out when using the stepping motor mode
and standard mode after changing over between them.
(i) Restrictions on speed
When the stepping motor mode is used, the operation may be controlled at
a low speed of 20 pulses/second in respect to the set positioning speed.
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