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Filtration

7-46 EMC Installation Guideline – Planning Guide (EMV) – 03.2004 Edition

Contactors

Relay coils

Brakes

Fig. 7-1 Wiring measures for interference suppression

7.2 Filter

To adhere to the radio interference thresholds according to specialist basic

standard EN 50081-2 or product standard EN 61800-3, filter modules must be used

for the drive control. These filter modules are used only for the purpose of filtering

the interference sizes generated by the converter. Therefore, they cannot be used

for the interference suppression of other consumers of a system.

Apart from the reduction of the radio interference voltage in the required frequency

range 150 kHz to 30 Mhz, these filter modules additionally reduce for the controlled

mains feed the grid-bound interference sizes in the frequency range below 150 kHz

(reduction of mains feedback).

Filter assembly in the control cabinet

· With system-specific filters, the assembly occurs according to the type of

construction and corresponding to the assembly regulations in the

manufacturer’s documentation.

· Assembly on metal plate with extensive, good conductive contacting.

· Painted control cabinet walls, hat rails or similar assembly aids with a small

contact surface and low potential link are not suitable for the assembly of the

converter and filter.

Siemens SIROTEC Planning Guide

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