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6 Programming Features

5. Calculate the rated secondary current of the motor using the following equation:

6. Input the power supply voltage for the Maximum Voltage (n012).

7. Input the following calculated value for the Maximum Voltage Output

Frequency (n013):

8. Perform autotuning again.

9. Record the Motor No-load Current (n110) again.

10. Calculate the rated secondary current of the motor using the following equa-

tion:

11. Input the following calculated value for the Motor Rated Slip (n106):

1. When speed precision is required at high speeds (i.e., 90% of the rated

speed or higher), set n012 (Max. Voltage) to the input power supply

voltage × 0.9.

2. When operating at high speeds (i.e., 90% of the rated speed or higher), the

output current will increase as the input power supply voltage is reduced.

Be sure to provide sufficient margin in the Inverter current.

Operating Procedure

1. Confirm the following:

• The motor is separated from the machine system.

• The motor shaft lock key is removed.

• If there is a brake, it is released.

• The wiring is correct.

2. The Inverter power supply is ON.

3. There is no error.

4. Select Program Mode by pressing until is lit.

5. Set the following constants for the selected motor to the nameplate

ated Secondary Current Rated Current()

No-Load Current()

–=

Maximum Voltage Output Frequency

Base Frequency on the Motor Nameplate Power Supply Voltage×

Rated Voltage on the Motor Namplate

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Rated Secondary Current

Rated Secondary Current calculated in Step 5 Rated Voltage on Motor Nameplate×

Power Supply Voltage

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Motor Rated Slip

Base Freq. from Motor Nameplate Rated Speed from Motor Nameplate

Number of Poles

120

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×–

⎝ ⎠

⎛ ⎞

No-Load Current in Step 9

No-Load Current in Step 4

Rated Secondary Current in Step 5

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