Mitsubishi FREQROL-U100

)PrecautionsI
1. It is necessary to accept a reduction of load torque when
setting the
PWM carrier frequency to a higher value.
PWM carrier frequency (kHz)
o 2.37 8 910 11 12131414.5
-~-Ijl-.
-.-~-.~
- r -, - -.- -0_
- ~ - - - -.- - r _ 0.-.
_ .. - ~ - =:= = ~ = ~ == =~ --- .~
100 -;--""
'l!
li
~
60
SO
Derating
to rated
current
(%)
-40-
(1) When setting the PWM carrier
Ireq uenoy (Pr .72) to 7.1kHz or
more to lower the motor
acoustic noise, the rated
output should be derated as
shown on the right.
Also change the electronic
thermal relay (Pr. 9) setting.
(2) If the PWM carrier frequency
is increased, the
acoustic
noise from the motor will
lower, but the noise qenerated
by the inverter
and the leakage
current will increase.