Siemens SINAMICS DCM Manual page 223

Additional system components
7.3 Terminal Module TM15
7.3.9 Connector coding
Siemens supplies a series of coding keys ("coding sliders") with each Terminal Module
TM15. To encode a connector, you must insert at least one coding slider and cut off a coding
lug on the connector:
①
②
Figure 7-18
To prevent wiring errors, unique encoding schemes can be defined for the X520, X521, and
X522 connectors. Examples of possible schemes:
● Three connectors on one component are encoded differently (e.g. X520, X521, and
X522).
● Different component types are encoded differently.
● Identical components on the same machine are encoded differently (e.g. several TM15-
type components).
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Insert a coding slider.
Cut off the coding lug on the connector.
Procedure for encoding a connector
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SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001