Instruction manual

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Speed control operation

CONTROL

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 29 for the setting method of Pr. 160 "extended function selection" and to page 56 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

4.1.1 Speed 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).

4.1.2 Operation transition

4.1.3 Setting procedure

z Turning on the start signal increases the

speed up to the preset speed according to the

acceleration time.

z 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 Pr. 802 "pre-excitation selection " on

page 70.)

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/

deceleration 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.

Acceleration time

in Pr. 7

Pr. 13 "starting speed"

Deceleration time in Pr. 8

Pr. 10 "DC injection

brake operation

speed"

Speed

Start signal

RUN signal

Speed command

Perform secure wiring. (Refer to page 7.)

Set the motor to be used. (Refer to page 20.)

Refer to page 20 if the motor is one rank lower.

Set the encoder. (Refer to page 12.)

Set the run command. (Refer to page 34.)

Set any of "0 (speed control), 2 (speed-torque switchover), 4 (speed-position switchover)" in Pr. 800 "control method

selection" to make speed control valid. The parameter is factory-set to 0 (speed control). (Refer to page 57.)

Set the speed limit during torque control.

Test run (Refer to page 23.)

As required

1) Gain adjustment (Refer to page 47.)

2) Set the torque limit value (Refer to page 34.)

It is not necessary to set the

encoder and motor when

using the dedicated motor

(SF-V5RU).