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SIRIUS 3RT2 contactors/contactor assemblies
2.7 Accessories
SIRIUS Innovations
180
System Manual, 01/2011, A8E56203870002-03
Circuit diagram
The diagram below shows an RC circuit with an RC element on the left, and an RC circuit
with a varistor on the right.
/
/
/
5B/
5B/
5B/
&B/
&B/
&B/
8
8
8
0
a
0
a
7
7
7
7
7
7
9B/
9B/
9B/
Figure 2-32 EMC suppression module, circuit diagram
2.7.4.2
Configuration
Selection aid
When motors or various inductive loads are disconnected, a counter-source voltage is
generated. This can lead to voltage peaks of up to 4,000 V with a frequency spectrum from
1 kHz to 10 MHz and a rate of voltage variation from 0.1 to 20 V/ns.
9
9
9
˩V
W
Figure 2-33 Counter-source voltage without RC circuit
Capacitive input to various analog and digital signals makes it necessary to suppress
interference in the load circuit.
Summary of Contents for SIRIUS 3RH Series
Page 1: ...SIRIUS Innovations System Manual 01 2011 Industrial Controls Answers for industry ...
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