„ Electrical Connection Carry out any work on live equipment in compliance with the national safety and accident prevention regulations. Carry out electrical installation in compliance with the relevant regulations. In particular, follow the installation instructions ensuring electromagnetic compatibility (EMC), e.g. shielding, grounding, filter arrangement and laying of cables. This also applies to equipment with the CE mark. It is the responsibility of the manufacturer of the system or machine to ensure conformity with EMC limits.
Your supplier or Omron Yaskawa Motion Control representative must be contacted when using leak- age current circuit breaker in conjunction with frequency inverters. In certain systems it may be necessary to use additional monitoring and safety devices in compli- ance with the relevant safety and accident prevention regulations. The frequency inverter hardware must not be modified. „ Notes The Varispeed E7 frequency inverters are certified to CE, UL, and cUL ‹ EMC Compatibility „ Introduction This manual was compiled to help system manufacturers using OMRON YASKAWA Motion Control (OYMC) frequency inverters design and install electrical switch gear.
It also describes the measures necessary to comply with the EMC Directive. The manual's installation and wiring instructions must therefore be followed. Our products are tested by authorized bodies using the standards listed below. Product standard: EN 61800-3:1996 EN 61800-3; A11:2000 „ Measures to Ensure Conformity of OYMC Frequency inverters to the EMC Directive It is not possible to give detailed instructions for all of the possible types of installation. This manual therefore has to be limited to general guidelines. OYMC frequency inverters do not necessarily have to be installed in a switch cabinet.
All electrical equipment produces radio and line-borne interference at various frequencies. The cables pass this on to the environment like an aerial. Connecting an item of electrical equipment (e.g. drive) to a supply without a line filter can therefore allow HF or LF interference to get into the mains. 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 definitely advisable. Moreover, cable shields must be connected with purpose-made ground clips. EN-4