Delta Electronics VFD-VL manual Operation and Start Up, Operation Method

Chapter 3 Operation and Start Up

„Make sure that the wiring is correct. In particular, check that the

output terminals U/T1, V/T2, W/T3 are NOT connected to power and that the drive is well grounded.

„Verify that no other equipment is connected to the AC motor

„Do NOT operate the AC motor drive with humid hands.

„Verify that there are no short-circuits between terminals and from terminals to ground or mains power.

„Check for loose terminals, connectors or screws.

„Make sure that the front cover is well installed before applying power.

„Please do NOT touch output terminals U, V, W when power is still

applied to L1/R, L2/S, L3/T even when the AC motor drive has stopped. The DC-link capacitors may still be charged to hazardous voltage levels, even if the power has been turned off.

3.1 Operation Method

The factory setting for operation method is set to control terminal. But it is just one of the operation methods. The operation method can be via communication, control terminals settings or optional digital keypad KPVL-CC01. Please choose a suitable method depending on application and operation rule. The operation is usually used as shown in the following table.

Revision Nov. 2008, VLE1, SW V1.03 3-1