YASKAWA F7 User Manual

Also see for Varispeed f7: Connection manual Programming manual User guide Instruction manual User manual

Contents

Electrical Installation 2 - 26Electromagnetic Compatibility (EMC) IntroductionThis section describes the measures necessary to comply with the EMC (Electro Magnetic Compatibility) Directive.The manual's installation and wiring instructions must be followed for compliance.Yaskawa products are tested by certified independent test laboratories for compliance toward the EMC Directive 89/336/EECas amended by 91/263/EEC, 92/31/EEC, 93/68/EEC.The F7 series Drives meet/conform to the following standards:EN 61800-3: 1996, A11: 2000-01 EN 61000-4-5: 1995-03 VDE0847 Part 4-13: 1996EN55011: 2000-05 EN 61000-4-6: 1996-97 IEC 61000-2-1: 1994EN 61000-4-2: 1995-03 EN 61000-4-11: 1994 IEC 1000-4-27: 1997EN 61000-4-3: 1997 CISPR 11: 1997EN 61000-4-4: 1995-03 VDE0847 Part 4-28: 1997 Measures to Ensure Conformity of Installed Yaskawa Drives to EMC DirectiveYaskawa Drives are not required to be installed in an EMC compatible enclosure.It is not possible to give detailed instructions for all possible types of installations; therefore, this manual provides generalguidelines.All electrical equipment produces radio and line-borne interference at various frequencies. The power leads pass this on to thesurrounding environment like an antenna. Connecting an item of electrical equipment (e.g. Drive) to a supply without a linefilter can allow High Frequency (HF) or Low Frequency (LF) interference to penetrate the power distribution system. Thebasic countermeasures are isolation of the wiring of control and power components, proper grounding, and shielding of cables.A large contact area is necessary for low-impedance grounding of HF interference. The use of grounding straps, instead ofcables, is therefore highly recommended.Cable shields must be connected with ground clips.CE certification for EMC can be achieved using the line filters specified in this manual and following the appropriate installa-tion instructions. Cable InstallationMeasures against line-borne interference:Use a power cable with a well-grounded shield. Use a shielded motor cable not exceeding 82 feet (25m) in length. Arrange allgrounds to maximize the end of the lead area in contact with ground (e.g. metal plate).Use a shielded cable with braided shield and ground the maximum possible area of the shield. It is advisable to ground theshield by connecting the cable to the ground plate with metal clips (see Fig 2.14).Fig 2.14 Grounding Surface LayoutGround clip Ground plate