Mitsubishi Electric 800 Series Instruction Manual page 97

5
Speed control
Purpose
To limit the torque during speed
control
To adjust the speed control gain
To avoid motor overrunning
This chapter explains the speed control under Real sensorless vector control and PM sensorless vector control. Speed control
performs control so that the speed command and the actual motor rotation speed match.
 Control block diagram
Terminal 2
Terminal 4
[Pr. 858 = 0]
RL
RM
RH
REX
Option
Operation panel
DC injection brake operation
Zero speed control
DC injection brake operation
96
5. Speed control
Torque limit
Speed control P gain, speed control integral time
Speed deviation excess
Terminal 2 bias [C2, C3]
AU
Terminal 2 gain [Pr. 125, C4]
Terminal 4 bias [C5, C6]
Terminal 4 gain [Pr. 126, C7]
AU
RT
[Pr.822≠9999]
Speed setting
filter [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. 850 = 1]
[Pr. 850 = 0]
Parameter to set
P.H500, P.H700
to P.H704,
P.H710, P.H720,
P.H721, P.H730,
P.D030, P.T040,
P.G210
P.G211, P.G212,
P.G311, P.G312
P.H416, P.H417
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]
PM sensorless vector control
Real sensorless
Vector control
to page
Pr.22, Pr.801,
Pr.803, Pr.810
100
to Pr.817,
Pr.858, Pr.874
Pr.820, Pr.821,
107
Pr.830, Pr.831
Pr.285, Pr.853 109
Operation Mode
[Pr. 79]
Analog
input
selection
[Pr. 73]
Running
A
During stop
Refer