EM12 User’s Manual
5. Description of Function Codes
31
5. Description of Function Codes
5.1 Group b0: Basic Function Parameters
b0-00
Motor type selection
Default
0
Setting
Range
0
AC asynchronous motor
1
Permanent magnetic synchronous motor
0- select Motor 1 as AC asynchronous motor;
1-select Motor 1 as Permanent magnetic synchronous motor
b0-01
Motor control mode
Default
2
Setting
Range
0
Sensor-less vector control (SVC)
1/2
V/F control
3
Closed-loop vector control (FVC)
Unit’s digit and Ten’s digit is to select motor 1 and motor 2 control mode.
0: Sensor less vector control (SVC)
It indicates open-loop vector control, and is applicable to high-performance control applications such as machine tool,
centrifuge, wire drawing machine and injection molding machine. One frequency inverter can operate only one
motor.
1/2: Voltage/Frequency control (V/F)
It is applicable to applications with low load requirements or applications where one frequency inverter operates
multiple motors, such as fan and pump.
3: Closed-loop vector control (FVC)
It is applicable to high-accuracy speed control or torque control applications such as high-speed paper making
machine, crane and elevator. One frequency inverter can operate only one motor. An encoder must be installed at the
motor side, and a PG card matching the encoder must be installed at the frequency inverter side.
Note:
If vector control is used, motor auto-tuning must be performed because the advantages of vector control can
only be utilized after correct motor parameters are obtained. Better performance can be achieved by adjusting speed
regulator parameters in group “d”.
For the permanent magnetic synchronous motor (PMSM), the EM12 does not support SVC. FVC is used generally.
In some low-power motor applications, you can also use V/F.
b0-02
Command source selection
Default
0
Setting
Range
0
Keypad control (LED off)
1
Terminal control (LED on)
2
Communication control (LED blinking)
It is used to determine the input channel of the frequency inverter control commands, such as run, stop, forward
rotation, reverse rotation and jog operation. You can input the commands in the following three channels:
0: Keypad control
("LOCAL/REMOT" indicator off)
Commands are given by pressing keys “RUN” and “STOP/RESET” on the operation panel.
1: Terminal control
("LOCAL/REMOT" indicator on)
Commands are given by means of multifunctional input terminals with functions such as FWD, REV, JOGF, and
JOGR.
2: Communication control
("LOCAL/REMOT" indicator blinking)
Commands are given from host computer. For more details please refer to the appendix of communication protocol.
Summary of Contents for EM12 Series
Page 5: ......
