Delta Electronics VFD-EL manual Installation and Wiring

Chapter 2 Installation and Wiring

After removing the front cover, check if the power and control terminals are clear. Be sure to observe the following precautions when wiring.

„General Wiring Information Applicable Codes

All VFD-EL series are Underwriters Laboratories, Inc. (UL) and Canadian Underwriters Laboratories (cUL) listed, and therefore comply with the requirements of the National Electrical Code (NEC) and the Canadian Electrical Code (CEC).

Installation intended to meet the UL and cUL requirements must follow the instructions provided in “Wiring Notes” as a minimum standard. Follow all local codes that exceed UL and cUL requirements. Refer to the technical data label affixed to the AC motor drive and the motor nameplate for electrical data.

The "Line Fuse Specification" in Appendix B, lists the recommended fuse part number for each VFD-EL Series part number. These fuses (or equivalent) must be used on all installations 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 may result in damage to the equipment. The voltage and current should lie within the range as indicated on the nameplate.

2.All the units must be grounded directly to a common ground terminal to prevent lightning strike or electric shock.

3.Please make sure to fasten the screw of the main circuit terminals to prevent sparks which is made 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?

Revision August 2008, 2ELE, V1.02 2-1