TECO A510s - Rated Voltage and Frequency Settings

4-272
When tuning a special motor (e.g. constant power motor, high-speed spindle motor), with a motor rated voltage or
rated motor frequency that is lower than a standard AC motor, it is necessary to confirm the motor nameplate
information or the motor test report.
Prevent the inverter output voltage from saturation when the motor rated voltage is higher than the inverter input
voltage (see Example 1).
Example 1: Motor rated voltage (440V/60Hz) is higher than the inverter input voltage (380V/50 Hz).
Output
Voltage
440V
17-03
0
17-04 60Hz
Output
Frequency
Inverter
M
380V/50Hz 440V/60Hz
Motor rated voltage (for auto-tuning operation)
Rated voltage (for motor nameplate)
Rated frequency (for motor nameplate)
Motor rated frequency (for auto-tuning operation)
Figure 4.4.98 Rated voltage and frequency settings
Step 1: Set auto-tuning (17-00), and set motor rated output power (17-01) and the motor rated current (17-02) by
label of the motor.
Step 2: Set the value of motor rated voltage (17-03) =440V by label of the motor.
Step 3: Set the value of motor rated frequency (17-04) =60Hz
Step 4: Set the value of motor rated speed (17-05) 、pole number of motor (17-06) and PG pulse number (17-07).
Beware that PG pulse number (17-07) only used in SV and V/F+PG mode.
Step 5: Set the value of motor no-load voltage (17-08) =360V, the set value for torque control is 20V lower than
input voltage.
Step6: Execute auto-tuning. Set auto-tuning (17-10=1) and enter to standby screen. Enter RUN command to start
auto-tuning. The value of selection of PG rotation direction (20-28) adjusts automatically with PG card
when auto-tuning. The value of motor rated frequency (17-04) adjusts automatically to the same as the
value of base frequency of motor 1.If the value of maximum output frequency of motor 1(01-02) is
different form base frequency of motor 1 (01-12), the system will adjusts the value of maximum output
frequency of motor 1(01-02) the same as base frequency of motor 1 (01-12) automatically.
When the inverter input voltage (or frequency) is higher than the motor rated voltage (or frequency), set the motor
rated voltage (17-03) and the motor rated frequency (17-04) to the rated frequency on the motor nameplate.
Example 2: The inverter input voltage and frequency (460V/50Hz) are higher than the motor rated voltage and
frequency (380V/33Hz), set 17-03 to 380V (rated motor voltage) and 17-04 to 33Hz (motor rated frequency).
■ Number of poles (17-06)
Set the motor pole number with its range is 2, 4, 6 and 8 poles
■ Number of PG pulse (17-07)
Set the pulse number of each cycle. If the control mode is SV mode and the V / F + PG mode, the encoder
must be installed on the motor shaft and there is no reduction gear ratio.