Chapter 12 Descriptions of Parameter SettingsMS300
271
Normal duty: overload rated output current 150% in 3 seconds. (120%, 1 minute). Refer to Pr.00-
17 for the setting for the carrier frequency. Refer to Chapter 9 Specifications or Pr.00-01 for the
rated current.
Heavy duty: overload rated output current 200% in 3 seconds. (150%,1 minute) Refer to Pr.00-
17 for the setting for the carrier frequency. Refer to Chapter 9 Specifications or Pr.00-01 for the
rated current.
Pr.00-01 varies with the setting value of Pr.00-16. The default value and maximum of Pr.06-03
and Pr.06-04 also vary with the setting value of Pr.00-16.
In normal duty, the default setting of Pr.06-03 and Pr.06-04 is 120%, and the maximum is 150%.
In heavy duty, the default setting of Pr.06-03 and Pr.06-04 is 180%, and the maximum is 200%.
Heavy load: 2–15 kHz
NOTE:
When Pr.00-11 = 5 (IMFOC Sensorless), the maximum setting value for the
carrier frequency is 10 kHz.
Determines the PWM carrier frequency for the AC motor drive.
From the table, you see that the PWM carrier frequency has significant influences on the
electromagnetic noise, the AC motor drive heat dissipation, and the motor acoustic noise.
Therefore, if the surrounding noise is greater than the motor noise, lower the carrier frequency to
reduce the temperature rise. Although the motor has quiet operation in the higher carrier
frequency, consider the entire wiring and interference.
When the carrier frequency is higher than the default, decrease the carrier frequency to protect
the drive. Refer to Pr.06-55 for the related setting and details.
bit 0: Control command is forced by PLC control
bit 1: Frequency command is forced by PLC control
bit 3: Torque command is forced by PLC control
Determines if the frequency command, control command or torque command is locked by PLC.
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