18
Example:
50.0
》
320.5
》
220
》
1.7
》
136
》
5.60
》
8.30
》
50.0
setting frequency
bus voltage output voltage
output current terminal status potentiometer
AI voltage
running frequency
50.0
》
320.5
》
220
》
1.7
》
136
》
5.60
》
8.30
》
50.0
setting frequency
bus voltage output voltage
output current terminal status potentiometer
AI voltage
running frequency
Fig. 4-3 Example for Status Parameter Display Switching
The terminal status is displayed in binary code. The codes for each bit are as follows:
Description of bit
Weight
Description of bit
Weight
BIT0 for DI1
1
BIT1 for DI2
2
BIT2 for DI3
4
BIT3 for DI4
8
BIT4 is reserved
BIT5 is reserved
BIT6 for RELAY output
64
BIT7 for DO
output
128
For example, if DI1 and DI3 input are valid and DI2 and DI4 have no input, the terminal status is
indicated as 5.
If the inverter is powered on again after power-off, the parameters displayed are defaulted as those
selected before the power-off.
4.3 Auto Tuning of Motor Parameters
Before running the inverter that has selected the vector control mode, accurate motor nameplate
parameters must be input. MD300A inverter will configure the standard motor parameters according
to the nameplate parameters. Vector control mode is highly dependent on the motor parameters,
and correct parameters must be acquired for achieving good control performance. It needs to tune
the motor parameters.
Motor auto tuning procedures:
Firstly set F0-01 to 0: set the operation mode to keypad operation mode, and according to the actual
type of motor, set F1-00 to 0: general motor or 1: frequency conversion motor
Then input the following parameters according to the actual parameters of motor:
F1-01: Rated power of motor F1-04: Rated frequency of motor
F1-02: Rated voltage of motor F1-05: Rated speed of motor
