FANUC Alpha SVU Alarms
Fanuc Alpha Servo Amplifier Unit Alarms and Error Codes.
Fanuc Alpha Servo Amplifier Unit Alarms covering the series of Fanuc Alpha servo amplifiers. Namely the A06B-6089/6090
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If an alarm condition related to the servo amplifier unit occurs, the 7 segment LED indicator on the amplifier front behaves as listed below.
| Alarm Code | Type | Description of Alarm/Error |
| 1 | Over Voltage alarm ( HV) | This alarm occurs if the DC voltage of the main circuit power supply is abnormally high. |
| 2 | Low control power voltage alarm (LV) | This alarm occurs if the control power voltage is abnormally low. |
| 3 | Low DC link voltage alarm (LVDC) | This alarm occurs if the control power voltage is abnormally low or the circuit breaker trips. |
| 4 | Regenerative discharge control circuit failure alarm(DCSW) | This alarm occurs if:
|
| 5 |
Over regenerative discharge alarm (DCOH) | This alarm occurs if:
|
| 7 | Dynamic brake circuit failure alarm (DBRLY) | This alarm occurs if the relay contacts of the dynamic brake welds together. |
| 8 | L-axis over current alarm (HCL) | This alarm occurs if an abnormally high current flows in the L -axis motor. |
| 9 | M-axis over current alarm (HCM) | This alarm occurs if an abnormally high current flows in the M -axis motor. |
| 6 | L and M axis over current alarm (HCM) |
This alarm occurs if an abnormally high current flows in the L & M axes motor. |
| 8. | L-axis IPM alarm ( IPML) | This alarm is detected by the IPM of the L axis. |
| 9. | M-axis IPM alarm (IPMM) | This alarm is detected by the IPM of the M axis. |
| b | L and M axis IPM alarm |
This alarm is detected by the IPM of the L and M axes. |
| Trips | Circuit breaker | The circuit breaker trips if an abnormally high current flows through it. |