Speed Control - Mitsubishi Electric RD77MS2 User Manual

Speed control

In "speed control" ("[Da.2] Control method" = Forward run: speed 1 to 4, Reverse run: speed 1 to 4), control is carried out in
the axis direction in which the positioning data has been set by continuously outputting pulses for the speed set in "[Da.8]
Command speed" until the input of a stop command.
The eight types of speed control includes "Forward run: speed 1 to 4" in which the control starts in the forward run direction,
and "Reverse run: speed 1 to 4" in which the control starts in the reverse run direction.
Refer to the following for the combination of the reference axis and the interpolation axis.
Page 64 Interpolation control
Operation chart
The following charts show the operation timing for 1-axis speed control with axis 1 and 2-axis speed control with axis 2 when
the axis 1 is set as the reference axis.
The "in speed control" flag ([Md.31] Status: b0) is turned ON during speed control.
The "Positioning complete signal" is not turned ON.
■1-axis speed control
RD77MS4 operation example
[Da.8] Command speed
Positioning start signal
[Y10]
BUSY signal
[X10]
Positioning complete signal
([Md.31] Status: b15)
[Cd.180] Axis stop
In speed control flag
([Md.31] Status:b0)
3 MAJOR POSITIONING CONTROL
108
3.2 Setting the Positioning Data
V
ON
OFF
ON
OFF
OFF
OFF
ON
OFF
t
Does not turn ON even when control is stopped
by stop command.
ON