Yaskawa F7 Drive User Manual - Manual (Page 53)

Electrical Installation 2 - 26
Electromagnetic Compatibility (EMC)
Introduction
This 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/EEC
as 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: 1996
EN55011: 2000-05 EN 61000-4-6: 1996-97 IEC 61000-2-1: 1994
EN 61000-4-2: 1995-03 EN 61000-4-11: 1994 IEC 1000-4-27: 1997
EN 61000-4-3: 1997 CISPR 11: 1997
EN 61000-4-4: 1995-03 VDE0847 Part 4-28: 1997
Measures to Ensure Conformity of Installed Yaskawa Drives to EMC Directive
Yaskawa 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 general
guidelines.
All electrical equipment produces radio and line-borne interference at various frequencies. The power leads pass this on to the
surrounding environment like an antenna. Connecting an item of electrical equipment (e.g. Drive) to a supply without a line
filter can allow High Frequency (HF) or Low Frequency (LF) interference to penetrate the power distribution system. The
basic 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 of
cables, 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 Installation
Measures 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 all
grounds 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 the
shield by connecting the cable to the ground plate with metal clips (see Fig 2.14).
Fig 2.14 Grounding Surface Layout
Ground clip Ground plate