Delta Electronics AC Motor Drive VFD-EL User Manual

Contents

Delta Electronics AC Motor Drive VFD-EL User Manual Manual pdf 22 page image

Revision August 2008, 2ELE, V1.02 2-1Chapter 2 Installation and WiringAfter removing the front cover, check if the power and control terminals are clear. Be sure to observethe following precautions when wiring. General Wiring InformationApplicable CodesAll VFD-EL series are Underwriters Laboratories, Inc. (UL) and Canadian UnderwritersLaboratories (cUL) listed, and therefore comply with the requirements of the NationalElectrical Code (NEC) and the Canadian Electrical Code (CEC).Installation intended to meet the UL and cUL requirements must follow the instructionsprovided in “Wiring Notes” as a minimum standard. Follow all local codes that exceed ULand cUL requirements. Refer to the technical data label affixed to the AC motor drive andthe motor nameplate for electrical data.The "Line Fuse Specification" in Appendix B, lists the recommended fuse part number foreach VFD-EL Series part number. These fuses (or equivalent) must be used on allinstallations where compliance with U.L. standards is a required.CAUTION!1. Make sure that power is only applied to the R/L1, S/L2, T/L3 terminals. Failure to comply mayresult in damage to the equipment. The voltage and current should lie within the range asindicated on the nameplate.2. All the units must be grounded directly to a common ground terminal to prevent lightning strikeor electric shock.3. Please make sure to fasten the screw of the main circuit terminals to prevent sparks which ismade by the loose screws due to vibration.4. Check following items after finishing the wiring:A. Are all connections correct?B. No loose wires?C. No short-circuits between terminals or to ground?