Lenze i550 Series - Switching Frequencies

n
N
n
M
M
N
U/f
Vector
M Torque M
rated
Rated torque
n Speed n
rated
Rated speed
Applicaon areas are for instance:
•
Single drives with changing loads
•
Single drives with high starng duty
•
Sensorless speed control of three-phase AC motors
Switching frequencies
On an inverter, the term "switching frequency" is understood to mean the frequency with
which the input and outputs of the output module (inverter) are switched. On an inverter, the
switching frequency can generally be set to values between 2 and 16 kHz, whereby the selec-
on is based on the respecve power output
As switching the modules cause heat losses, the inverter can provide higher output currents at
low switching frequencies than at high frequencies. Addionally, it is disnguished between
the operaon at a permanently set switching frequency and a variably set switching fre-
quency. Here, the switching frequency is automacally reduced as a funcon of the device
ulisaon.
At a higher switching frequency, the noise generaon is less.
Features Versions
Switching frequencies
•
2 kHz
•
4 kHz
•
8 kHz
•
16 kHz
•
variable (automac adjustment)
Appendix
Good to know
Switching frequencies
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