SANCH S3000 Series, User Manual

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5-9
00-15 Carrier Frequency Upper Bound Factory setting 15
Settings 0: soft pwm
1~15kHz
00-16 Carrier Frequency Lower Bound Factory setting 10
Settings 1-15kHz (disabled during soft PWM)
00-17 Center Frequency of Soft pwm Factory setting 3
Settings 1~7kHz
1
This parameter is utilized in setting the carrier frequency of the PWM output.
Carrier
Frequency
Electromagnetic
Noise
Interference,
Leakage Current
Heat
Dissipation
1kHz
8kHz
15kHz
Maximum
Minimum
Minimum
Maximum
Minimum
Maximum
00-16
PWM Carrier Frequency
Operation
Frequency
01-00
00-15
1
The PWM carrier frequency has a direct effect on the electromagnetic noise of the motor
and heat dissipation of the drive. Therefore, if the surrounding noise is greater than the
electromagnetic noises of the motor, it is suggested to lower the carrier frequency, to
decrease the temperature of the drive. Although a quiet operation may be achieved with
a higher carrier frequency, it is necessary to take into consideration the relative wiring
length between the motor and drive and the effect this high frequency may have on the
motor windings.
1
During SOFT PWM, the electromagnetic noises are less annoying at the same carrier
frequency for standard operation.