Basic Wiring; Basic Wiring Diagrams - Delta VFD-B User Manual

2.4.1 Basic Wiring

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.
Check the following items after completing the wiring:
1. Are all connections correct?
2. No loose wires?
3. No short-circuits between terminals or to ground?
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.
DANGER!
1. All the units must be grounded directly to a common ground terminal to prevent electric shock,
fire and interference.
2. Only qualified personnel familiar with AC motor drives are allowed to perform installation, wiring
and commissioning.
3. Make sure that the power is off before doing any wiring to prevent electric shocks.

Basic Wiring Diagrams

Users must connect wires according to the circuit diagrams on the following pages. Do not plug a
modem or telephone line to the RS-485 communication port or permanent damage may result. The
pins 1 & 2 are the power supply for the optional copy keypad PU06 only and should not be used for
RS-485 communication.
Revision July 2008, BE16, SW V4.08 & V5.00
Chapter 2 Installation and Wiring|VFD-B Series
2-13