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Speed control operation
CONTROL
4
4CONTROL
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
4.1.1 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
!
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.)
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.
Acceleration time
in Pr. 7
Pr. 13 "starting speed"
Deceleration time in Pr. 8
Pr. 10 "DC injection
brake operation
speed"
Speed
Start signal
UN signal
Speed command
Perform secure wiring. (Refer to page 7.)
Set the motor to be used. (Refer to page 19.)
Refer to page 19 for when the motor is one rank lower.
Set the PLG. (Refer to page 12.)
Set the operation command. (Refer to page 33.)
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 speed restriction during torque control.
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.)
It is not necessary to set
the PLG when using the
Mitsubishi standard
motor (SF-V5R).