Chapter 6 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 or communication.
NOTE
Wait 5 seconds after a fault has been cleared before performing reset via keypad of input terminal.
6.1 Common Problems and Solutions
Fault | Fault Descriptions |
| Corrective Actions |
Name |
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| 1. | Check if motor power corresponds with the |
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| AC motor drive output power. |
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| 2. | Check the wiring connections to U/T1, V/T2, |
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| W/T3 for possible short circuits. |
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| 3. | Check the wiring connections between the AC |
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| motor drive and motor for possible short |
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| circuits, also to ground. |
| Over current | 4. | Check for loose contacts between AC motor |
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| drive and motor. | |
| Abnormal increase in current. |
| |
| 5. | Increase the Acceleration Time. | |
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| ||
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| 6. | Check for possible excessive loading |
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| conditions at the motor. |
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| 7. | If there are still any abnormal conditions when |
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| operating the AC motor drive after a short- |
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| circuit is removed and the other points above |
|
|
| are checked, it should be sent back to |
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| manufacturer. |
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| 1. | Check if the input voltage falls within the |
| Over voltage |
| rated AC motor drive input voltage range. |
| 2. | Check for possible voltage transients. | |
| The DC bus voltage has | 3. | |
| exceeded its maximum |
| motor regeneration. Either increase the |
| allowable value. |
| Decel. Time or add an optional brake resistor. |
|
| 4. | Check whether the required braking power is |
|
|
| within the specified limits. |
Revision August 2006, SE08, SW V2.61 |
