PDM20 Series
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P1.06 limits the maximum working frequency of SPD.
Use P1.08 to choose running status of SPD when running frequency is lower than
lower limit frequency. To prevent motor from being in low speed operation for a
long time, you can use this parameter to stop it.
If use a 60Hz pump, please set parameters according to the following steps.
Step 1: Set the parameter P1.06 (Upper limit frequency) to 60
Step 2: Set the parameter P1.13 (Motor rated frequency) to 60
P1.09 Carrier frequency setting
1.0～15.0
kHz Set according to models
Use this parameter to adjust carrier frequency of SPD. You can decrease motor
noise by adjusting carrier frequency, avoid point of resonance, decrease leakage
current of wires to ground and decrease interference of SPD.
When carrier frequency is high, motor loss decreases, temperature rising of motor
is small, but SPD loss increases, temperature rising of SPD increases and
interference increases.
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