Mitsubishi Electronics QD75P, QD75D Setting the speed limit function, If any axis exceeds, 200000

12CONTROL SUB FUNCTIONS

[2]Precautions during control

MELSEC-Q

If any axis exceeds "

Pr.8

Speed limit value" during 2- to 4-axis speed control,

the axis in excess of the speed limit value is controlled at the speed limit value. The speeds of the other axes interpolated are suppressed depending on their command speed ratios.

If the reference axis exceeds " Pr.8 Speed limit value" during 2- to 4-axis linear

interpolation control, 2- to 4-axis fixed-feed control or 2-axis circular interpolation control, the reference axis is controlled at the speed limit value (The speed limit does not function on the interpolation axis side.)

[3] Setting the speed limit function

To use the "speed limit function", set the "speed limit value" in the parameters shown in the following table, and write them to the QD75.

The set details are validated after they are written to the QD75.

	Setting item		Setting	Setting details			Factory-set
			value				initial value
Pr.8		Speed limit value		Set the speed limit value (max. speed during control).			200000
				Set the speed limit value during JOG operation (max.
				speed during control). (Note that "		JOG speed
		JOG speed limit			Pr.31
Pr.31							20000
		value		limit value" shall be less than or equal to "		Pr.8
				Speed limit value".)
Refer to Section 5.2 "List of parameters" for setting details.

REMARK

•Parameters are set for each axis.

•It is recommended that the parameters be set whenever possible with GX Configurator-QP. Execution by sequence program uses many sequence programs and devices. The execution becomes complicated, and the scan times will increase.

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