Mitsubishi Electronics FR-V500 instruction manual Control mode switchover timing

Control mode switchover timing

4.4 Control mode switchover timing

Depending on a parameter setting change or whether the MC terminal turns on/off, the control mode switches at the following timing.

Switchover Pattern		Switchover Operation
Speed	Torque	The mode can be changed any time independently of whether the motor is at a stop or running
		or the DC brake (servo lock) is operating.

Speed	Position	The m ode can be changed when the speed is equal to or lower than the low speed detection level.
		W hen the speed is higher than the low speed detection level, changing the M C signal during
Position	Torque	rotation will not switch the control m ode to the other, and as soon as the speed falls to or below Pr.
		865 "low speed detection level", the control m ode is changed according to the term inal status.

〈Example: Speed Position, when Pr. 800 = 4〉

Low speed detection level (Pr. 865)

STF

MC

Speed control Position control

!Terminals and terminal functions changed by control mode switchover

The terminal functions vary with the control mode as indicated in the following table.

			Description
Classification	Terminal			Speed Control/Torque Con-
	Name	Speed Control	Torque Control	trol Switchover
				(MC:ON/OFF)
	STF	Forward rotation command	←	←
	STR	Reverse rotation command	←	←
Contact input	DI1	Multi-function input 1	←	←
signal	DI2	Multi-function input 2	←	←
	DI3	Multi-function input 3	←	←
	DI4	Multi-function input 4	←	←
Contact output	ABC	Alarm contact	←	←
Open collector	DO1	Multi-function output 1	←	←
	DO2	Multi-function output 2	←	←
output
	DO3	Multi-function output 3	←	←
	2	Speed command input	Speed restriction input	Speed command/speed
				restriction
Analog input	1*	Speed command	Speed restriction	Speed command/speed
		auxiliary input	auxiliary input	restriction
	3	Torque restriction input	Torque command input	Torque restriction/torque
				command
Analog output	DA1	Multi-function monitor output 1	←	←
	DA2	Multi-function monitor output 2	←	←

*: Assumes that the Pr. 868 value is the factory setting.

REMARKS

•DI1 to DI4, STR terminal function selection ⇒ Pr. 180 to Pr. 183, Pr. 187 (input terminal function selection). (Refer to page 61.)

•DO1 to DO3, ABC terminal function selection ⇒ Pr. 190 to Pr. 192, Pr. 195 (output terminal function selection). (Refer to page 61.)

•No. 1 terminal function selection ⇒ Pr. 868 "No. 1 terminal function assignment" ( Refer to the Instruction Manual (detailed).)

•No. 1, 2, 3 terminal bias/gain adjustment ⇒ Pr. 902 to Pr. 905, Pr. 917, Pr. 918 (bias/gain adjustment) (Refer to page 47.)

•DA1, DA2 terminal function selection ⇒ Pr. 54, Pr. 158 (DA1, DA2 function selection) (Refer to page 56 (DA1) and page 60 (DA2).)

•DA1, DA2 terminal calibration ⇒ Pr. 900, Pr. 901 (DA1, DA2 terminal calibration) (Refer to page 25.)

•MC signal terminal assignment ⇒ Set "26" to any of DI1 to DI4 and STR using any of Pr. 180 to Pr. 183 and Pr. 187 (input ter- minal function selection). (Refer to page 61.)

•For the change in terminals and terminal functions during position control, refer to the Instruction Manual (detailed).

• Control system selection ⇒ Pr. 800 (Refer to page 53.)

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CONTROL