Mitsubishi Electronics QD75D, QD75P user manual Axis 1 output speed, Axis 2 output speed

12CONTROL SUB FUNCTIONS

[2]Precautions during control

MELSEC-Q

(1)If the movement amount designated by the positioning data is small when the continuous path control is executed, the output speed may not reach the designated speed.

(2)If continuous path control is carried out, the output will suddenly reverse when the reference axis movement direction changes from the positioning data No. currently being executed to the next positioning data No.

If the sudden output reversal affects the mechanical system, carry out control with continuous positioning control.

[Path during continuous path control]

Axis 2

Positioning data No.2

Positioning data No.1

Axis 1 (reference axis)

[Axis 1 output speed]

V

Positioning data	Output suddenly reverses.
No. 1
		t
	Positioning data No.2

[Axis 2 output speed]

V

Positioning data	Positioning data No.2
No. 1

t

Fig. 12.11 Path and output speed of various axes when movement direction varies during continuous path control

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