Mitsubishi Electronics FR-V500 instruction manual Speed restriction

Torque control operation

(1) Calibration of torque command No. 3 terminal		Output torque
Refer to the chart on the right for the relationship
		(Torque command)
between torque setting input voltage and output	150%
voltage. The torque setting input signal is in pro-
portion to the output torque. Note that the motor-			Gain
developed torque varies with the motor tempera-			Pr. 905
ture.			Bias
	-10V		Pr. 904
Use Pr. 904 and Pr. 905 to adjust bias/gain of		0	10V Terminal 3
the No. 3 terminal. (Refer to page 47.)
	-150%

4.2.6Speed restriction

Set the speed restriction value to prevent the motor from over speeding due to a smaller load torque than the torque command value.

Parameter	Name	Factory	Setting Range
		Setting
807	Speed restriction selection	0	0, 1, 2
808	Forward rotation speed control	1500r/min	0 to 3600r/min
809	Reverse rotation speed control	9999	0 to 3600r/min, 9999

Select the speed restriction input method using Pr. 807.

Pr. 807 Setting	Speed Restriction						Operation
	Input Method
				• Speed setting from the operation panel
	Same method as speed			• External analog command (terminal 1, 2)
0				• Multi-speed command
	setting for speed
(factory setting)				• Option (FR-V5AX etc.)
	control
				For both PU and external operations, the speed restriction changes according to
				the acceleration/deceleration time. (Refer to 40 page)
	Pr. 808 Forward			According to the rotation direction, set the speed restriction in forward and
				reverse rotation directions individually. When the reverse rotation speed
	rotation speed control
1				restriction is 9999, the setting is the same as that of the torque restriction in
	Pr. 809 Reverse
				forward rotation direction.
	rotation speed control
				(		Refer to the Instruction Manual (detailed).)
	Forward/reverse			The analog voltage of the No. 1 terminal input is used to make speed restriction.
				For 0 to 10V input, set the forward rotation speed restriction. (The reverse
	rotation speed
				rotation speed restriction is Pr. 1 "maximum speed" .) For -10 to 0V input, set the
	restriction
				reverse rotation speed restriction. (The forward rotation speed restriction is Pr. 1
2	(analog polarity
				"maximum speed".) The maximum speed of both the forward and reverse
	switchover speed
				rotations is Pr. 1 "maximum speed". When No. 1 terminal input is selected, set
	restriction)
				"5" in Pr. 868 "No. 1 terminal function assignment".
	(No. 1 terminal analog
	input)			(		Refer to the Instruction Manual (detailed).)
			Speed feedback<speed restriction value
		Torque command			+			Torque	Motor
								control
		Speed restriction			-
		input selection
Speed setting for
		0	+				Speed control
speed restriction									PLG
			+				(proportional control)
orward, reverse rotation		1
			-			Speed feedback	speed restriction value
peed restriction parameter		2
Forward/reverse rotation

speed restriction

(analog polarity switchover speed restriction)

39