98
Input Power
Output Frequency
F (UP/FORWARD)
ON
Input Power ON
time
time
time
Fig. 5.3.17: Power On Start Active
When Power On Start is
set Active, the drive will
run at the time of the
Power Up sequence.
5.3.14 Carrier Frequency
Carrier freq. [ADV: Code No. 53]: Carrier frequency of PWM modulator
Range: 3 - 15 kHz.
(Factory Default: 10 kHz.)
This is the Insulated Gate Bi-Polar Transistor (IGBT) switching frequency. This function
is generally used to prevent harmonic resonance in machines and motors. If this Pulse
Width Modulation (PWM) carrier frequency is set at a high level, the audible noise can
be reduced, however the electrical noise, current leakage, and switching loss may
increase. Generally, the carrier frequency is set to a lower value in high ambient
temperature environments.
For more information contact: Sievert Crane and Hoist, (708) 771-1600, [email protected], www.sievertcrane.com
