Speed Control By Real Sensorless Vector Control And Vector Control - Mitsubishi Electric FR-A700 Technical Manual

2.9 Speed control by Real sensorless vector control
and vector control
2.9.1 What is speed control?
(1) Control block diagram
The following shows a basic control block diagram during speed control.
AU
Terminal 2
AU
Terminal 4
[Pr. 858 = 0]
Terminal 1
[Pr. 868 = 0]
Speed setting
Terminal 6
filter
FR-A7AZ
RL
RM
RH
REX
Option
Operation panel
Speed feed forward control
Model adaptive speed control
[Pr. 877 = 1]
RT
A
[Pr. 877 = 2]
[Pr. 877 = 0]
RT
A700
(A700)
Terminal 2 bias [C2, C3 (Pr. 902)]
Terminal 2 gain [Pr. 125, C4 (Pr. 903)]
Terminal 4 bias [C5, C6 (Pr. 904)]
Terminal 4 gain [Pr. 126, C7 (Pr. 905)]
RT
[Pr. 822 = 9999]
[Pr. 822]
[Pr. 74]
[Pr. 822 = 9999]
[Pr. 832 = 9999]
RT
[Pr. 832]
[Pr. 74]
[Pr. 832 = 9999]
Multi-speed
selection
[Pr. 4 to 6,
24 to 27,
232 to 239]
Load inertia ratio
Speed feed forward
J s
gain
[Pr. 880]
[Pr. 881]
J [Pr. 880]
Torque
coefficient
Model speed
calculation
1
+
Model speed
control gain
[Pr. 828]
J s
-
Analog input offset
adjustment [Pr. 849]
Analog
input
selection
[Pr. 73]
Speed feed
Speed feed forward
forward
torque limit
filter [Pr. 878]
[Pr. 879]
Speed
RT
+
control
P gain 1
- [Pr. 820]
When torque bias is selected
Speed
RT
control
P gain 2
[Pr. 830]
When torque bias is selected
Vector control
[Pr. 800 = 0]
Real sensorless
vector control
[Pr. 800 = 10]
280
PARAMETER
Operation Mode
[Pr. 79]
+
+
Speed control
X44
integral
time 1
[Pr. 821]
Integration cleared to 0
X44
0
Torque bias
operation
time [Pr. 845]
+
+
Speed control
X44
integral
time 2
[Pr. 831]
Integration cleared to 0
X44
0
Torque bias
operation
time [Pr. 845]
Speed detection filter
RT
Speed
[Pr. 823]
estimation
RT
[Pr. 833]