Siemens SINAMICS Series Operating Instructions Manual page 709

Figure 12-4
In order to be able to control the load current, it is recommended that an external actual
current sensing circuit be used for these applications. Whereby, the entire load current
(including the freewheeling current) is measured via an external shunt. The shunt voltage
must be increased via an external shunt converter and then led to the SINAMICS DCM via
an analog input. See function diagram 6850, column 2.
Figure 12-5
Parameter
p51852
p51853
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
12.4 Using SINAMICS DCM as thyristor controller in heating applications
Voltage and current curves
SINAMICS DCM with external current actual value sensing
Selection of external current actual value sensing
Scaling of external current actual value sensing
Applications
707