Siemens SINAMICS DCM Manual página 824

To field line voltage sensing
[6952]
Thyristor
bridge
A
Effective gain
3C 3D
1 2
DO: DC_CTRL
Field circuit control - Actual field current value sensing
Ia/If sc_values [A]
If
r52952[1]
Conversion to Average value between
amperes 2 firing pulses
D
3 4
Red If_rated [A]
r50073[1]
5 6
Function diagram
fp_6912_13_eng.vsd
SINAMICS DCM
01.10.18 V01.05.00
250 μs
If [A]
[8047.1]
If_act int abs [%]
[6910.1]
r52266
[8046.5]
7 8
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