General Wiring Information; Applicable Codes; Chapter 2 Installation And Wiring - Delta Electronics AC Motor Drive VFD-VE Series User Manual

After removing the front cover (see chapter 1.2.3 for details), 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-VE 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-VE 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. 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?
DANGER!
1. A charge may still remain in the DC bus capacitors with hazardous voltages even if the power
has been turned off. To prevent personal injury, please ensure that the power is turned off and
wait ten minutes for the capacitors to discharge to safe voltage levels before opening the AC
motor drive.
2. All the units must be grounded directly to a common ground terminal to prevent lightning strike
or electric shock.
3. Only qualified personnel familiar with AC motor drives is allowed to perform installation, wiring
and commissioning.
4. Make sure that the power is off before doing any wiring to prevent electric shock.
Revision August 2008, 03VE, SW V2.04

Chapter 2 Installation and Wiring

2-1