11 switching frequency changeover, System modules – Lenze ECSCAxxx User Manual
Page 363
System modules
MCTRL_MotorControl (node number 131)
Switching frequency changeover
l
363
EDBCSXA064 EN 3.2
13.20.11
Switching frequency changeover
For the inverter the following switching frequencies can be set via C0018:
ƒ
4 kHz for power−optimised operation
ð maximum power output of the drive
controller, however, with audible pulse operation.
ƒ
Automatic switch−over between power−optimised and noise optimised operation
(8 kHz).
Code
Possible settings
IMPORTANT
No.
Designation
Lenze/
{Appl.}
Selection
C0018 fchop
2
Switching frequency
^ 363
1
4 kHz sinus
Power−optimised operation
permanent 4 kHz frequency
2
4 8 kHz sinus
Noise optimised operation
automatic change−over to 8 kHz
at higher load
Automatic switching frequency changeover
You can use the automatic switching frequency changeover if you intend to operate the
drive in the noise optimised range, and if the available torque for acceleration processes
is not sufficient for this purpose.
Condition M = f(I)
Function
M < M
N
(I
N
)
Drive controller operates at 8 kHz (noise optimised)
M
N
(I
N(8)
) < M < M
N
(I
N(4)
)
Drive controller switches to 4 kHz (power−optimised)
M > M
max
(I
max
)
Drive controller operates at 4 kHz in current limitation