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4.4 Speed control by Real sensorless vector control, vector
control
Purpose
To perform torque limit during speed control Torque limit
Gain adjustment of speed control
To enhance the trackability of the motor in
response to a speed command change
Stabilize the speed detection signal
Accelerates the rise of the torque at a start
Avoid mechanical resonance
Speed control is exercised to match the speed command and actual motor speed.
(1) Control block diagram
Terminal 2
Terminal 4
[Pr. 858 = 0]
Terminal 1
[Pr. 868 = 0]
Speed setting
filter
RL
RM
RH
REX
Option
Operation panel
Servo lock
zero speed control
Zero speed control
Zero speed control
DC injection brake operation
Easy gain tuning
Gain adjustment
Speed feed forward control,
model adaptive speed control
Speed detection filter
Torque bias
Notch filter
Terminal 2 bias [C2, C3 (Pr. 902)]
AU
Terminal 2 gain [Pr. 125, C4 (Pr. 903)]
Terminal 4 bias [C5, C6 (Pr. 904)]
Terminal 4 gain [Pr. 126, C7 (Pr. 905)]
AU
RT
[Pr. 822 = 9999]
[Pr. 822 = 9999]
[Pr. 832 = 9999]
RT
[Pr. 832 = 9999]
Multi-speed
selection
[Pr. 4 to 6,
24 to 27,
232 to 239]
Maximum/minimum setting
[Pr. 1]
[Pr. 2]
[Pr. 802 = 1]
LX
[Pr. 802 = 0]
Decelerates to stop
[Pr. 11]
LX
LX
[Pr. 850 = 1]
Decelerates to stop
[Pr. 850 = 0]
[Pr. 11]
Speed control by Real sensorless
Parameter that should be Set
Pr. 22, Pr. 803, Pr. 810,
Pr. 812 to Pr. 817,
Pr. 858, Pr. 868, Pr. 874
Pr. 818 to Pr. 821, Pr. 830,
Pr. 828, Pr. 877 to Pr. 881
Pr. 840 to Pr. 848
Analog input offset
adjustment [Pr. 849]
[Pr. 822]
[Pr. 74]
[Pr. 832]
[Pr. 74]
Acceleration/deceleration processing
[Pr. 13]
[Pr. 10]
[Pr. 7]
[Pr. 8]
Vector control
[Pr. 800 = 0]
Real sensorless
Vector control
[Pr. 800 = 10]
vector control, vector control
Refer to Page
Pr. 831, Pr. 880
Pr. 823, Pr. 833
Pr. 862, Pr. 863
Operation Mode
[Pr. 79]
Analog
input
selection
[Pr. 73]
Running
A
During stop
99
104
111
143
113
117
4
95
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