Delta Electronics Network Device VFD-S Especificaciones descargar pdf (Pagina 95)

VFD-S Series

DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED

7-2

Fault Name Fault Descriptions

Corrective Actions

The AC drive detects

excessive drive output

current.

Note: The AC drive can

withstand up to 150% of

the rated current for a

maximum of 60 seconds.

1. Check whether the motor is overloaded.

2. Reduce torque compensation setting as set in

Pr.7-02.

3. Increase the AC drive’s output capacity.

Internal electronic overload

trip

1. Check for possible motor overload.

2. Check electronic thermal overload setting.

3. Increase motor capacity.

4. Reduce the current level so that the drive

output current does not exceed the value set

by the Motor Rated Current Pr.7-00.

Motor overload. Check

the parameter settings

( Pr.6-03 to Pr.6-05)

1. Reduce the motor load.

2. Adjust the over-torque detection setting to an

appropriate setting.

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.7-02.

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).

The external terminal

EF-GND goes from OFF

to ON.

When external terminal EF-GND is closed, the

output will be turned off. (under N.O.

E.F.)

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