Delta Electronics VFD-L Series Especificaciones descargar pdf (Pagina 95)

7

VFD-M Series

DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED

7-3

Fault

Name

Fault Descriptions

Corrective Actions

Over-current during

acceleration:

1. Short-circuit at motor output.

2. Torque boost too high.

3. Acceleration time too short.

4. AC drive output capacity is

too small.

1. Check for possible poor insulation at the

output line.

2. Decrease the torque boost setting in Pr.54.

3. Increase the acceleration time.

4. Replace with the AC drive with one that has a

higher output capacity (next HP size).

Over-current during

deceleration:

1. Short-circuit at motor output.

2. Deceleration time too short.

3. AC drive output capacity is

too small.

1. Check for possible poor insulation at the

output line.

2. Increase the deceleration time.

3. Replace with the AC drive with one that has a

higher output capacity (next HP size).

Over-current during steady state

operation:

1. Short-circuit at motor output.

2. Sudden increase in motor

loading.

3. AC drive output capacity is

too small.

1. Check for possible poor insulation at the

output line.

2. Check for possible motor stall.

3. Replace with the AC drive with one that has a

higher output capacity (next HP size).

Internal memory IC can not be

programmed.

1. Switch off power supply.

2. Check whether the input voltage falls within

the rated AC drive input voltage.

3. Switch the AC drive back on.

Internal memory IC can not be

read.

1. Check the connections between the main

control board and the power board.

2. Reset drive to factory defaults.

Hardware protection failure

Return to the factory.

Software protection failure

Return to the factory.

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