Basic Wiring - Delta VFD-B Series Manual

The "Line Fuse Specification" in Chapter 11, lists the recommended fuse part number for each B-
Series part number. These fuses (or equivalent) must be used on all installations where compliance
with U.L. standards is a required.

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 following items after finishing 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 is 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. Terminals 1 & 2 are the
power supply for the optional copy keypad PU06 only and should not be used for RS-485 communication.
Revision 10/2005, BE13, SW V4.08
Chapter 2 Installation and Wiring VFD-B Series
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