Delta Electronics Network Device VFD-S Spécifications télécharger pdf (Page 21)

VFD-S Series

3-8

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/T1, V/T2, and W/T3 are connected to the motor

terminals U/T1, V/T2, and W/T3, 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.

10. Do not attach or remove wiring when power is applied to the AC drive.

11. Do not monitor the signals on the circuit board while the AC drive is in operation.

12. For the single-phase applications, the AC input line can be connected to any two of the

three input terminals R/L1, S/L2, T/L3.

Note: This drive is not intended for the use with single-phase motors.

13. Route the power and control wires separately, or at 90

angle to each other.

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Delta Electronics Network Device VFD-S Spécifications Page 21