Inovance MD280NT2.2GB - Page 103

Description of Function Codes MD280 User Manual
- 102 -
The MD280 provides totally two groups of acceleration/deceleration time for selection. You
can perform switchover by using a DI terminal.
 Group 1: F0-09, F0-10
 Group 2: F5-04, F5-05
Function Code Parameter Name Setting Range Default
F0-11 Carrier frequency 0.5–16.0 kHz Model dependent
It is used to adjust the carrier frequency of the AC drive, helping to reduce the motor noise,
avoiding the resonance of the mechanical system, and reducing the leakage current to the
earth and interference generated by the AC drive.
If the carrier frequency is low, output current has high harmonics, and the power loss and
temperature rise of the motor increase.
If the carrier frequency is high, power loss and temperature rise of the motor declines.
However, the AC drive has an increase in power loss, temperature rise and interference.
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table.
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Carrier frequency /RZĺ+LJK
Motor noise /DUJHĺ6PDOO
Output current waveform %DGĺ*RRG
Motor temperature rise +LJKĺ/RZ
AC drive temperature rise /RZĺ+LJK
Leakage current 6PDOOĺ/DUJH
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The factory setting of carrier frequency varies with the AC drive power. If you need to modify
the carrier frequency, note that if the set carrier frequency is higher than factory setting, it
will lead to an increase in temperature rise of the AC drive's heatsink. In this case, you need
to de-rate the AC drive. Otherwise, the AC drive may overheat and alarm.
Function Code Parameter Name Setting Range Default
F0-12 Rotation direction
0: Same direction
1: Reverse direction
0
You can change the rotation direction of the motor just by modifying this parameter without
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motor’s U, V, W wires.
Note
The motor will resume running in the original direction after parameter initialization. Do not use
this function in applications where changing the rotating direction of the motor is prohibited after
system commissioning is complete.
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