GE C11, AF-300 manual Electromagnetic Compatibility EMC, General, RFI Filters

13 Electromagnetic Compatibility (EMC)

13-1 General

In accordance with the provisions described in the European Commission Guidelines Document on Council Directive 89/336/EEC,GE Fuji has chosen to classify the AF-300C11 range of Drives as "Com- plex Components".

Classification as a "Complex Components" allows a product to be treated as an "apparatus", and thus permits compliance with the essential requirements of the EMC Directive to be demonstrated to both an integrator of AF-300C11 Drives and to his customer or the installer and the user.

AF-300C11 Drives are supplied `CE-marked', signifying compliance with EC Directive 89/336/EEC when fitted with specified filter units installed and grounded in accordance with this sheet.

This Specification requires the following performance criteria to be met.

EMC product standard EN61800-3/1996

Immunity : Second environment ( Industrial environment )

Emission : First environment ( Domestic environment )

Finally, it is customer’s responsibility to check whether the equipment conforms to EMC directive.

13-2 RFI Filters

It is strongly recommended that the appropriate AF-300C11 input filter is used, as shown in the fol- lowings, to limit RF current flowing into the main supply circuit. Without an input filter a AF-300C11 installation may not meet statutory requirement. AF-300 Drives contain high-power semi-conductor devices which are switched at high speeds to synthesize a near-sinusoidal current wave form across the frequency range of output. Rapidly-changing voltages and currents will generate some degree of electromagnetic emission. Emissions will be predominantly conducted through the motor and the mains supply cables, although some radiated emissions will be detected in close proximity to the drive system. It is essential that precautions are taken both at the design stage and at the time of in- stallation to prevent radio frequency interference (RFI) from the drive system affecting sensitive equipment in close proximity.

The RFI filters range are designed especially for the AF-300C11 Drive and help to ensure EMC com- pliance of machinery an installations using the Drives. The Drives single phase series may be mounted on top of the filter using the integral fixing positions, the intention being that valuable space inside wiring cabinets may be saved. (Refer to Table 13-2-2)

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