Accessories
9.5 EMC suppression module
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
Manual, 09/2017, A5E03656507120A/RS-AE/006
317
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.
Figure 9-15 Counter-source voltage without RC circuit
Capacitive input to various analog and digital signals makes it necessary to suppress
interference in the load circuit.
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