Speed Control; Outline Of Speed Control; Easy Gain Tuning Function Block Diagram - Mitsubishi Electric FR-V560 Instruction Manual

Speed 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 163 for details of Pr. 160 "extended function selection". (Since the factory setting of Pr. 77 is "0",
perform parameter write in the PU mode or during a stop.)

2.2 Speed control

2.2.1

Outline of speed control

The basics of speed control are explained in the Instruction Manual (basic).
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.
Pr. 800 is factory-set to 0 (speed control) (Refer to page 182.)
As required
1) Gain adjustment
Perform easy gain tuning. (Refer to the Instruction Manual (basic).)
Perform model adaptive control/speed feed forward control. (Refer to page 51.)
Perform manual input gain adjustment. (Refer to page 48.)
2) Set the torque restriction value.
Refer to the Instruction Manual (basic) for the connection diagram, test run and
easy gain tuning.
2.2.2

Easy gain tuning function block diagram

+
Command
-
Easy gain tuning
response level
setting
(Pr.818)
Set the motor. (Refer to page 8)
Set the operation command. (Refer to page 129.)
To achieve faster responsiveness to the speed command change
(when faster responsiveness is desired)
For further fine adjustment of gains
Automatic setting
Speed control/position loop gain
Model speed control gain
Pr.820, Pr.821,
Pr.828, Pr.422
Turn on with the
Pr. 819 setting "1 or 2"
Turn on with the
Pr. 819 setting "1"
Load inertia ratio
Gain table
Pr.880
Easy gain tuning
selection
(Pr.819)
Test run
+
Current
-
control
Torque command
Load inertia
ratio estimation
section
46
Load
inertia
moment
Detector
Motor
E n c o d e r
Actual speed
Speed/position feedback