ELECTRIC INVERTER,S CARRIER FREQUENCY OF INVERTER,S






CARRIER FREQUENCY

set the carrier frequency upper limit and lower limit in K Hz units . the carrier frequency gain is set as follows . frequency is fixed at c 6-0 1
c 6-0 1>10.0 k=3
10.0>c 6-0 1>5.0:k=2
5.0>c 6-0 1:k=1

NOTE: in vector control , the carrier frequency is set by constant c 6-0 1

DESCRIPTION:

the carrier frequency characteristics differ according to the  control  method . v/f control and v/f with pg feedback control, carrier frequency variable setting possible . open ,loop vector control and flux vector control , constant frequency (the carrier frequency upper limit only is set.). the carrier frequency dose not normally need to be adjust except that following situation . please reduce the carrier frequency when the wiring distance is long between inverter and motor . in the occasion with low speed and torque vibration is big . please reduce the carrier frequency . the setting range of c6-01 varies as follows in the different control mode , v/f control (with / without pg), 0.4~15. vector control (with /without ) , 2.0~15.0.  the factory setting varies according to the inverter,s capacity . in the vector control modes , the carrier frequency is determined by the carrier frequency upper limit (constant c 6-0 1), in the v/f control modes (both with and without pg), the carrier frequency can be changed in response to the output frequency by setting the carrier frequency lower limit (constant c 6- 0 2) and the carrier frequency proportional gain (constant c 6-0 3). to make the carrier frequency constant, either set the same value for constant c 6-0 1 and c 6-0 2 or set the carrier frequency proportional gain (constant c 6-0 3) to ,0, (i,e,,fix at upper limit value). the following setting will generate a constant setting fault (ope 11) . carrier frequency upper limit (c 6-0 1)>5.0 K Hz and carrier frequency lower limit (c 6-0 2)<5.0 K Hz . carrier frequency proportional gain  (c 6-0 3)<6 and  (c 6-0 1)< c 6-0 2).if the lower limit is set higher than the upper limit will be disregarded and carrier frequency will be fixed at the upper limit ...

NOTE:
1.5 kw ~7.5 kw,the carrier frequency shall be set to be 5.0 Hz, i,e,c 6-0 1=c 6-0 2=5.0 K Hz .
11 kw~110 kw, the carrier frequency shall be set to be 3.0 K Hz,i,e , c 6-0 1=c 6-0 2=0 K Hz.
132 kw or above , the carrier frequency shall be set to be below 2.01 K Hz.  c 6-0 1= c 6-0 2<2.0 K Hz.  



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