Chapter 3 Environment description and installation
3-13
z When the connection between the inverter and the motor is too long, consider the voltage drop of
the circuit. Phase-to-phase voltage drop (V) =
3 ×resistance of wire (Ω/km)×length of line (m)×current×10
-3
. And the carrier frequency must be
adjusted based on the length of the line.
The length of the line between
the inverter and the motor
Below 25m Below 50m Below 100m Over100m
Carrier Frequency Below 16KHz Below 12KHz Below 8KHz Below 5KHz
Settings of F40 parameter 16 12 8 5
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