Siemens SINAMICS SM150

6.5.7 Connecting the encoder
Procedure
NOTICE
Incorrectly connected external encoder
Components can be damaged if the external encoder is not connected or operated correctly.
Only one measuring system can be connected to each sensor module. The sensor module
is wired internally to the customer terminal strip. For further information, see the circuit
manual.
To connect the encoder, proceed as follows:
1. The five safety rules must be observed.
2. Disconnect the cabinet from the power supply.
3. Route the cables from the encoder into the cabinet from below.
4. Route the cable further up into the cabinet until it reaches the customer terminal strips.
5. Connect the signal line to the customer terminal strip. You will find details of this in the
circuit manual.
6. Connect the shield of the encoder cable directly to the shielding bus (serrated bar). It is
important here to establish the greatest possible area of contact and a good conductive
connection. Use metal ground clamps to secure the shield in place.
Connection example: HTL encoder, bipolar, with reference signal
This example shows the connection assignment on the sensor module. The terminals of the
sensor module are wired to the customer terminal strip. For further information, see the circuit
manual.
*URXQGHQFRGHUVXSSO\
(QFRGHUSRZHUVXSSO\9
&75/
7UDFN%
7UDFN%
7UDFN$
7UDFN$
*URXQG
5HIHUHQFHVLJQDO5
5HIHUHQFHVLJQDO5
;
;
.
.


0
8E
.
.
.
.






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Figure 6-8 Connection example: HTL encoder, bipolar, with reference signal
Electrical connection
6.5 Connection
SINAMICS SM150 6SL3845-7NN46-7AA0
118 Operating Instructions 04/2017