6.5.7
Connecting the encoder
Procedure
NOTICE
Damage caused by 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. Route the cables from the encoder into the cabinet from below and to the customer terminal
strips.
3. Connect the signal line to the customer terminal strip. You will find details of this in the circuit
manual.
4. 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.
*URXQGHQFRGHUVXSSO\
(QFRGHUSRZHUVXSSO\9
&75/
7UDFN%
7UDFN%
7UDFN$
7UDFN$
*URXQG
5HIHUHQFHVLJQDO5
5HIHUHQFHVLJQDO5
;
;
.
.
0
8E
.
.
.
.
Figure 6-7
Connection example: HTL encoder, bipolar, with reference signal
Use a bipolar connection. The unipolar connection should only be employed when the encoder
type being used does not provide push-pull signals.
Electrical connection
6.5 Connection
SINAMICS SM150 6SL3815-7NP41-0AA1
110
Operating Instructions Rev.201910281301 EXAMPLE
