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Mitsubishi Electric RD77MS2 - Page 251

Mitsubishi Electric RD77MS2
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8 CONTROL SUB FUNCTIONS
8.5 Functions to Change the Control Details
249
8
Precautions during control
At the speed change during continuous path control, when no speed designation (current speed) is provided in the next
positioning data, the next positioning data is controlled at the "[Cd.14] New speed value". Also, when a speed designation
is provided in the next positioning data, the next positioning data is controlled at its "[Da.8] Command speed".
When changing the speed during continuous path control, the speed change will be ignored if there is not enough distance
remaining to carry out the change.
When the stop command was given to make a stop after a speed change that had been made during position control, the
restarting speed depends on the "[Cd.14] New speed value".
When the speed is changed by setting "[Cd.14] New speed value" to "0", the operation is carried out as follows.
When "[Cd.15] Speed change request" is turned ON, the speed change 0 flag ([Md.31] Status: b10) turns ON. (During interpolation control, the speed change
0 flag on the reference axis side turns ON.)
The axis stops, but "[Md.26] Axis operation status" does not change, and the BUSY signal remains ON. (If a stop signal is input, the BUSY signal will turn
OFF, and "[Md.26] Axis operation status" will change to "stopped".) In this case, setting the "[Cd.14] New speed value" to a value besides "0" will turn OFF
the speed change 0 flag ([Md.31] Status: b10), and enable continued operation.
[Cd.14] New speed value
Designated speed in P2
Designated speed in P1
Positioning control
P1
Next control
P2
[a] When no speed designation (current speed) is provided.
[b] When a speed designation is provided.
Speed change
command
[Cd.14] New speed value
[Da.8] Command speed
Stop command
V
t
Speed change
command
Restarting
command

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