Delta BLD-E1 brushless DC motor drive BLD-E1 Series User Manual download pdf (Page 159)

Chapter 6 Fault Code Information and Maintenance| BLD-E1 Series

6-2

Revision May 2009, 00DE, V0.50

6.1.1 Common Problems and Solutions

Fault

Name

Fault Descriptions

Corrective Actions

Over current during

acceleration

Output current exceeds triple

of the rated current during

acceleration.

1. Short-circuit at motor output: Check for

possible poor insulation at the output line.

2. Deceleration Time too short: Increase the

Deceleration Time.

3. Brushless DC motor drive output power is too

small: Replace the brushless DC motor drive

with the next higher power model.

Over current during

deceleration

Output current exceeds triple of

the rated current during

deceleration.

1. Short-circuit at motor output: Check for

possible poor insulation at the output line.

2. Deceleration Time too short: Increase the

Deceleration Time.

3. Brushless DC motor drive output power is too

small: Replace the brushless DC motor drive

with the next higher power model.

Over-current during steady

state operation

Output current exceeds triple

of the rated current during

constant speed.

1. Short-circuit at motor output: Check for

possible poor insulation at the output line.

2. Deceleration Time too short: Increase the

Deceleration Time.

3. Brushless DC motor drive output power is too

small: Replace the brushless DC motor drive

with the next higher power mode

Ground fault

When (one of) the output

terminal(s) is grounded, short

circuit current is more than

75% of brushless DC motor

drive rated current, the

brushless DC motor drive

power module may be

damaged

NOTE: The short circuit

protection is provided for

brushless DC motor drive

protection, not for protection of

the user.

1. Check the wiring connections between the

brushless DC motor drive and motor for

possible short circuits, also to ground.

2. Check whether the IGBT power module is

damaged.

3. Check for possible poor insulation at the

output line.

Over-current at stop

Return to the factory

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Delta BLD-E1 brushless DC motor drive BLD-E1 Series User Manual Page 159

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