Mitsubishi Electronics FR-V500 Speed control operation, Operation transition, Setting procedure

Speed control operation

4 CONTROL

This inverter can control a motor under speed, torque or position control. (As required, set "1" (extended function parameters valid) in Pr. 160 "extended function selection".)

Refer to page 28 for the setting method of Pr. 160 "extended function selection" and to page 54 for details. (Since the factory setting of Pr. 77 is "0", perform parameter write in the PU mode or during a stop.)

4.1 Speed control operation

4.1.1Speed control

Speed control is exercised to match the speed command and actual motor speed.

Speed response........ Maximum 800rad/s by internal processing and maximum 300rad/s (without adaptive

magnetic flux observer) by analog input signal are available (motor speed response to the speed command).

4.1.2Operation transition

!Turning on the start signal increases the speed up to the preset speed according to the acceleration time.

!Turning off the start signal decreases the speed according to the deceleration time. When the speed has decreased down to the DC brake operation speed, operation changes to 0 speed control or servo lock. (Refer to page 66.)

Acceleration time in Pr. 7

Speed

Start signal

UN signal

	Speed command
		Deceleration time in Pr. 8
Pr. 13 "starting speed"
			Pr. 10 "DC injection
				brake operation
				speed"

REMARKS

•When the RT signal is off, Pr. 7 and Pr. 8 are acceleration time and deceleration time.

•When the RT signal is on, Pr. 44 and Pr. 45 (second acceleration/deceleration time) are acceleration/decelera- tion time.

•Pr. 44 and Pr. 45 are valid when the RT signal is on, and Pr. 110 and Pr. 111 (third acceleration/deceleration time) are valid when the X9 signal is on. When both the RT and X9 are on, Pr. 110 and Pr. 111 are valid.

4.1.3Setting procedure

Perform secure wiring. (Refer to page 7.)

It is not necessary to set

Set the PLG. (Refer to page 12.) the PLG when using the Mitsubishi standard

motor (SF-V5R).

Set the motor to be used. (Refer to page 19.)

Refer to page 19 for when the motor is one rank lower.

Set any of "0 (speed-control), 2 (speed-torque switchover), 4 (speed-position switchover)" in Pr. 800 "control system selection" to make speed control valid. The parameter is factory-set to 0 (speed control). (Refer to page 53.)

Set the operation command. (Refer to page 33.)

Test run (Refer to page 22.)

As required

1)Gain adjustment (Refer to page 43.) <Perform easy gain tuning.>

2)Set the torque restriction value (Refer to page 33.)

Set the speed restriction during torque control.

32

4

CONTROL