Siemens SINAMICS DCM Manual page 99

Connecting
6.1 Instructions for EMC-compliant drive installation
12 RFI suppression filters must be used in order to conform to limit value class A1. Addi-
tional loads must be connected upstream of the filter (on the line side).
The controller used and the manner in which the rest of the control cabinet is wired will
determine whether an additional line filter needs to be installed.
13 A line reactor must be included in the field circuit for controlled field power supplies.
14 A line reactor must be included in the armature circuit of the converter.
15 The motor cables do not have to be shielded. There must be a clearance of at least 20
cm between the power supply and the motor cables (field, armature). Use a partition if
necessary.
Footnotes
Signal cables are defined as:
1)
Digital signal cables: E.g. cables for incremental encoders
Analog signal cables: E.g. ±10 V setpoint cable
Serial interfaces: E.g. PROFIBUS DP
Generally speaking, "ground" refers to all metallic conductive parts that can be con-
2)
nected to a protective conductor, such as the cabinet enclosure, motor enclosure, or
foundation ground.
Cabinet configuration and shielding
The cabinet configuration image below is intended to help the user become familiar with
EMC-critical parts. This example does not claim to show all possible cabinet components or
configuration options.
Later figures show details that are not made immediately clear by the overview image and
which may also have an effect on the cabinet's resistance/interference emission levels, as
well as shield connection techniques.
Arrangement of RFI suppression filters and line reactors
Another section shows how the RFI suppression filters and line reactors are arranged in a
SINAMICS DC MASTER. The order in which the reactors and filters are installed must be
adhered to. The filter cables on the line side and modular side must be physically separated.
For information on selecting fuses for semiconductor protection, see Chapter "Fuses".
100
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
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SINAMICS DCM DC Converter