1082 HEIDENHAIN Technical Manual iTNC 530 HSCI
7.4.4 PWM frequency
The control loops can be assigned different PWM frequencies in MP2180.x.
There are three fundamental PWM frequencies: 3333 Hz, 4000 Hz and
5000 Hz.
A control loop can be operated at the fundamental PWM frequency or at
double this frequency.
PWM frequencies of the CC 61xx
The same PWM frequency must be set for both PWM outputs of a drive-
control motherboard or a drive-control expansion board in MP2180.x.
Drive control board 1: X51, X52
Drive control board 2: X53, X54
Drive control board 3: X55, X56
PWM frequencies of the UEC 1xx
The same PWM frequency must be set for both PWM outputs of a drive-
control motherboard or a drive-control expansion board in MP2180.x.
Drive control board 1: X80, X81
Drive control board 2: X82, X83
Drive control board 3: X84
If you have set different fundamental PWM frequencies for the two outputs,
the error message C013 PWM frequency error will appear.
In MP2180.x, set the PWM frequency (either the fundamental or double the
fundamental PWM frequency) for every pair of outputs.
The cycle time of the current controller depends on the PWM frequency:
Can be set via MP2180.x (switchable during operation); the calculation of the
current-controller cycle time must be adapted via MP2182.x
T
I
1
2f
PWM
⋅
-----------------
=
To Next Page
Loading...
