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5. Calculate the rated secondary current of the motor using the following equation:
Rated Secondary Current
6. Input the power supply voltage for the Maximum Voltage (n012).
7. Input the following calculated value for the Maximum Voltage Output
Frequency (n013):
Maximum Voltage Output Frequency
Base Frequency on the Motor Nameplate
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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:
Rated Secondary Current
Rated Secondary Current calculated in Step 5
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11. Input the following calculated value for the Motor Rated Slip (n106):
Motor Rated Slip
=
Base Freq. from Motor Nameplate Rated Speed from Motor Nameplate
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No-Load Current in Step 9
NOTE
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
5. Set the following constants for the selected motor to the nameplate
64
=
Rated Voltage on the Motor Namplate
=
–
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 volt-
age
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.
2
Rated Current
No-Load Current
–
=
Power Supply Voltage
Rated Voltage on Motor Nameplate
Power Supply Voltage
No-Load Current in Step 4
---------------------------------------------------------------------------------- -
Rated Secondary Current in Step 5
until
DSPL
2
Number of Poles
--------------------------------------- -
120
is lit.
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