Delta Electronics VFD-VL manual Installation and Wiring

Chapter 2 Installation and Wiring

After removing the front cover (see chapter 1.2.2 for details), check if the power and control terminals are clear. Be sure to observe the following precautions when wiring.

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 the 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.

2.1 Wiring

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. Pins 1 & 2 are the power supply for the optional copy keypad only and should not be used for RS- 485 communication.

Revision Nov. 2008, VLE1, SW V1.03 2-1