Delta Electronics VFD-EL User Manual
Revision August 2008, 2ELE, V1.02
2-1
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?