Omron SYSDRIVE MX2 SERIES User Manual

5-51
5-5 Settings Relating to Control Method
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
5
Functions
Carrier Frequency
The carrier frequency of the PWM waveform output from the Inverter can be changed.
Increasing the carrier frequency reduces the metallic noise from the motor. However, this may
increase noise or leakage current from the Inverter.
Helps avoid mechanical or motor resonance.
Note: The maximum carrier frequency varies depending on the capacity.
To raise the carrier frequency (fc), derate the output current. (Refer to "Appendix" at the
end of this manual.)
Set a derating output current value as electronic thermal level.
For details, refer to "Electronic Thermal Function" on page 5-110.
(If the existing electronic thermal value is lower than the derating value, the above setting
is not required.)
 If the above maximum rated carrier frequency and the derating value at 15 kHz are exceeded, the
Inverter may be damaged and/or the service life may be shortened.
Raising the carrier frequency reduces the DC braking force. For details, refer to "DC Injection
Braking (DB)" on page 5-135.
Carrier frequency and Extent of impact
Parameter
No.
Function name Data
Default
setting
Unit
b083 Carrier Frequency
Heavy Load (b049 = 00)
2.0 to 15.0
Light Load (b049 = 01)
2.0 to 10.0
10.0
2.0
kHz
Related functions b089
Carrier frequency Low High
Motor noise Large Small
Noise/leak current Small Large
Torque Large Small
Carrier frequency: Low Carrier frequency: High

Omron SYSDRIVE MX2 SERIES Specifications

General

Brand	Omron
Model	SYSDRIVE MX2 SERIES
Category	Inverter
Language	English