Connecting the Inputs and Outputs of the SM 335
2-11
SM 335 – High-Speed Analog Input/Output Module for the SIMATIC S7-300
6ES7 335-7HG00-8BA1
Interference suppression filter
The SM 335 is protected from the high-frequency content by an interference sup-
pression filter. Connect this filter to the 24 V voltage supply circuit of the SM 335
module (see Figure 2-4).
SM 335
1L
+
Other modules
Other analog
modules that
generate no
interference
20 M
1
2 2’
1’
24 V
power
supply
M
L+
Interference
Suppression
Filter
Fig. 2-4 Interference Suppression Filter for the 24 V Power Supply of the
SM 335
The interference suppression filter can be used for a maximum of 4 SM 335 mod-
ules and should be located as close as possible to the SM 335.
The interference suppression filter is brought into the 24 V supply circuit even if it
can be used with a higher voltage.
The interference suppression filter can be obtained by quoting order number:
6ES7 335-7HG00-6AA0
Type: e. g., EPCOS SIFI C, order reference B84113-C-B30
Please contact your local Siemens representative for more information.
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