Chapter 6 Fault Code Information and Maintenance
6.1 Fault Code Information
The AC motor drive has a comprehensive fault diagnostic system that includes several different alarms and fault messages. Once a fault is detected, the corresponding protective functions will be activated. The following faults are displayed as shown on the AC motor drive digital keypad display. The three most recent faults can be read from the digital keypad by viewing Pr.73 to Pr.75.
NOTE
Wait 5 seconds after a fault has been cleared before performing reset via keypad or input terminal.
6.1.1 Common Problems and Solutions
Fault Name | Fault Descriptions |
| Corrective Actions |
|
| 1. | Check whether the motors horsepower |
|
|
| corresponds to the AC drive output |
|
|
| power. |
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| 2. | Check the wiring connections between |
|
|
| the AC drive and motor for possible |
|
|
| short circuits. |
| The AC drive detects an abnormal | 3. | Increase the Acceleration time (Pr.10, |
| increase in current. |
| Pr.12). |
|
| 4. | Check for possible excessive loading |
|
|
| conditions at the motor. |
|
| 5. | If there are any abnormal conditions |
|
|
| when operating the AC drive after |
|
|
| |
|
|
| be sent back to manufacturer. |
|
| 1. | Check whether the input voltage falls |
|
|
| within the rated AC drive input voltage. |
|
| 2. | Check for possible voltage transients. |
| The AC drive detects that the DC | 3. | Bus |
| bus voltage has exceeded its |
| by motor regeneration. Either increase |
| maximum allowable value. |
| the decel time or add an optional |
|
|
| brake resistor. |
|
| 4. | Check whether the required braking |
|
|
| power is within the specified limits. |
Revision May 2008, ME14, SW V3.04 |
