Yaskawa VS-626 MC5 - Manual (Page 106)

6.1 Common Settings
- 3
J Control Method: A1-02
D Select one of the four control methods.
D This constant is not initialized by the initialize operation.
User Change
during Setting Factory
Valid Access Levels User
Constant
Number
Name
during
Opera-
tion
Setting
Range Unit
Factory
Setting Open Loop
Vector
Flux Vector
A1-02
Control method selec-
tion
2 3 --
2
Open
Loop
Vector
Q Q
D Control Method Settings
Setting Control Method Function
2 Open loop vector control Vector control using the Inverter’s internal speed information
3 Flux vector control Vector control using a PG Speed Control Card
D The characteristics of each control method are shown in Table 6.1.
Table
6.1 Control Method Characteristics
Characteristic Open Loop Vector Flux Vector
Basic control method Current vector control without PG Current vector control with PG
Speed detector Not required
Required
(pulse generator)
Optional speed
detectors Not required PG-B2 or PG-X2
Speed control range 1:100 1:1000
Starting torque 150%/1 Hz 150%/0 r/min
Speed control
accuracy
0.2% 0.02%
Torque limit Possible Possible
Example applications
S Variable speed drive applications. S Simple servo drives.
S Precision speed control.
6