Yaskawa Matrix Converter - Manual (Page 372)

10
-2
MxC Control Methods
Details of the MxC control methods and their features are provided in this section.
‹ Control Methods and Features
The MxC offers three control methods, allowing the selection of a control method to suit the required purpose.
Table 10.1 provides an overview of the control methods and their features.
Table 10.1 Overview of Control Methods and Features
Control Method V/f Control Open Loop Vector Control Flux Vector Control
Parameter Setting A1-02 = 0
A1-02 = 2
(default)
A1-02 = 3
Basic Control
Voltage/frequency fixed ratio
control
Current vector control without a
PG
Current vector control with a PG
Main Applications Variable speed control Variable speed control
High-performance control with
a PG on the motor side
PG Speed Control Card
(Option)
Not required. Not required. Required
Basic
Perfor-
mance
Speed Control
Range
*1
1:10 1:10 1:1000
Speed Control
Accuracy
*2
±2 to 3% ±0.2% ±0.05%
Speed
Response
*3
- 5 Hz 30 Hz
Maximum
Output
Frequency
120 Hz 120 Hz 120 Hz
Starting
Torque
*4
150%/6 Hz 150%/6 Hz 150%/0 min
−1
Appli-
cation
Func-
tions
Auto-Tuning
Line-to-line resistance
(normally not required)
Rotational Auto-Tuning, Sta-
tionary Auto-Tuning, Stationary
Auto-Tuning for line-to-line
resistance only
Rotational Auto-Tuning, Sta-
tionary Auto-Tuning, Stationary
Auto-Tuning for line-to-line
resistance only
Torque
Limiting
*5
No
Yes (except during accel/decel,
below minimum frequency, or
during reverse rotation)
Yes
Torque
Control
*6
No No Yes
Droop
Control
*7
No No
Yes (except for 0 min
−1
and dur-
ing reverse rotation)
Zero-Servo
Control
*8
No No Yes