Mitsubishi Electronics QD75D, QD75P user manual Torque limit function, New torque value is set to

12CONTROL SUB FUNCTIONS

12.4.2 Torque limit function

MELSEC-Q

The "torque limit function" limits the generated torque to a value within the "torque limit value" setting range when the torque generated in the servomotor exceeds the "torque limit value".

The "torque limit function" protects the deceleration function, limits the power of the operation pressing against the stopper, etc. It controls the operation so that unnecessary force is not applied to the load and machine.

The details shown below explain about the "torque limit function".

[1]Relation between the torque limit function and various controls

[2]Control details

[3]Precautions during control

[4]Setting the torque limit function

[1]Relation between the torque limit function and various controls

The following table shows the relation of the "torque limit function" and various controls.

Control type	Torque limit	Torque limit value
	function

		Pr.17 Torque limit setting value
	Machine OPR control	After the " Pr.47	Creep
OPR		speed" is reached, this value
control
		becomes the " Pr.54		OPR
		torque limit value".
	Fast OPR control
	1-axis linear control

2 to 4-axes linear interpolation control

	Position	1-axis fixed-feed control
	control	2 to 4-axes fixed-feed				Torque limit setting value
					Pr.17
		control (interpolation)
Major		2-axis circular interpolation
positioning		control
control	1 to 4-axes Speed control
	Speed-position switching control
	Position-speed switching control
		Current value changing	–
	Other	JUMP instruction, NOP		Setting value is invalid.
	control	instruction, LOOP to	–
		LEND
						Torque limit setting value
Manual	JOG operation, Inching operation				Pr.17
control						Torque limit setting value
	Manual pulse generator operation				Pr.17

: Set when required (Set to " – " when not used.)

–: Setting not required (Setting value is invalid. Use the initial values or setting values within a range where no error occurs.)

: Shows the torque limit value when "

Cd.22

New torque value" is set to "0".

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