Siemens SINAMICS DCM Operating Instructions Manual page 105

6.6.3.3 Differential input for +/-10 V at rated armature DC current
This connection option is intended for operation with an LEM transformer or shunt amplifier.
It should be remembered that many products are limited in terms of what they can control.
Where this is the case, connection should be based on a 1 V input.
Connection
XB-1 positive (not inverted), XB-4 negative (inverted). External grounding at XB-4 is
recommended. The signal has both polarities (switches pole during torque changes).
S700 switch positions:
Remove R701 and R704. The difference amplifier has an attenuating effect (10:1).
Parameter settings
p51822 =
p51823 =
p51824 =
Load
The load resistor of the LEM current transducer should be located externally and grounded
with the power supply. Since shunt amplifiers generally have a ±10 V voltage output, they do
not require a load.
SINAMICS DCM Control Module
Operating Instructions, 12/2018, A5E34888669A
1 – 3 connected
4 – 6 connected
7 – 9 connected
Rated armature DC current
Input voltage at rated armature current/10
5 (bipolar)
6.6 Measurement of the armature current
Connecting
103