Fault Screen Display |
| Possible Causes | |
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Comm Error |
| • | Communication malfunction. |
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| • Improper or loose connection. | |
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| • | Improper system settings. |
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Ctrl Undervolts |
| • | This fault is caused by an undervoltage condition at the 5, 15, or the 24 VDC |
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CPU Error |
| • | CPU malfunction. |
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Main Undervolts |
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| • | Defective control board. |
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| • Excessive load on the power supply. | |
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| • Undervoltage/Ridethrough settings require adjustment. | |
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Fuse |
| • | Internal DC bus fuse is open. |
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DBR Overcurrent |
| • | ASD inability to discharge the bus voltage during regeneration. |
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| • No dynamic braking resistor (DBR) installed. | |
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| • Deceleration time is too short. | |
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| • Improper DBR setup information. | |
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| • Defective IGBT7 (or IGBT7 ckt.). | |
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DBR Overload |
| • | Deceleration time is too short. |
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| • DBR setting adjustment required. | |
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| • Overvoltage Stall setting adjustment required. | |
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GND Fault |
| • | Ground fault at the motor. |
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| • Ground fault at the output of the ASD. | |
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| • Current leakage to Earth Ground. | |
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Ctrl EEPROM Err |
| • | Internal EEPROM malfunction. |
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EEPROM Write Err | • | EEPROM write malfunction. | |
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| • | Emergency Off command received via EOI or remotely. |
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Encoder Loss |
| • | Encoder signal missing while running during |
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Flash Error |
| • | Flash memory malfunction. |
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Gate Array Error |
| • | Defective Gate Array or Gate Array malfunction. |
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In(put) Phase Loss |
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Load Drooping |
| • | Load requirement is in excess of the capabilities of the motor. |
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Load End OC |
| • | Improper wiring at the ASD output to the motor. |
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Under Curr(ent) Trip | • | Improper Low Current detection level setting. | |
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Main EEPROM Err | • | Internal EEPROM malfunction. | |
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Note: | The event that caused the Trip(s) must be corrected or must decrease to less than the threshold | ||
| value required to cause the trip to allow for a Reset to be recognized. In the event of multiple | ||
| active trips, the trip displayed will remain until all faults are corrected and all trips are cleared. | ||
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150 | W7 ASD Installation and Operation Manual |