Delta Electronics AC Motor Drive VFD007S23A Manual de usuario descargar pdf (Pagina 20)

Chapter 3 Wiring

Note: Use twisted-shielded, twisted-pair or shielded-lead wires for the control signal wiring. It

is recommended to run all signal wiring in a separate steel conduit. The shield wire

should only be connected at the drive. Do not connect shield wire on both ends.

CH 3-5 Wiring Notes:

CAUTION: Do not connect the AC input to any of the U, V, W terminals, as it will

damage the AC drive.

WARNING: Ensure all screws are tightened to the proper torque rating.

3. During installation, follow all local electrical, construction, and safety codes for the country

the drive is to be installed in.

4. Ensure that the appropriate protective devices (circuit breaker or fuses) are connected

between the power supply and AC drive.

5. Make sure that the leads are connected correctly and the AC drive is properly grounded.

(Ground resistance should not exceed 100 . For 460V-class AC drive, the ground

resistance should not exceed 10 .)

6. Use ground leads that comply with AWG/MCM standards and keep them as short as

possible.

7. Multiple VFD-S units can be installed in one location. All the units should be grounded

directly to a common ground terminal. The VFD-S ground terminals may also be connected

in parallel, as shown in the figure below. Ensure there are no ground loops.

Forward

running

8. When the AC drive output terminals U, V, and W are connected to the motor terminals U, V,

and W, respectively, the motor will rotate counterclockwise (as viewed from the shaft ends

of the motor) when a forward operation command is received. To reverse the direction of

motor rotation, switch over any of the two motor leads.

9. Make sure that the power source is capable of supplying the correct voltage and required

current to the AC drive.

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Delta Electronics AC Motor Drive VFD007S23A Manual de usuario Pagina 20