Alarms and Events
| Alarms | Description | Action |
|
|
|
|
23. | Main inverter failure | Temperature of main inverter, too | Check fan, check for airflow |
|
| high or inverter fuse blown | obstructions, check for overload, |
|
|
| check fuse |
|
|
|
|
24. | High temperature of delta | Temperature of delta inverter, too | Check fan, check for airflow |
| inverter | high | obstructions, check for overload |
|
|
|
|
25. | Low DC shutdown | Battery discharged to minimum | Ensure battery recharging |
|
| permissible level |
|
|
|
|
|
26. | Low DC warning | Battery nearly discharged | Save your data now |
|
|
|
|
27. | Mains momentarily outside | Short disturbances on mains | – |
| tolerance | supply (1 ms transients) |
|
|
|
|
|
28. | Mains outside tolerance | Mains input voltage R.M.S. value | – |
|
| outside tolerance |
|
|
|
|
|
29. | Mains frequency outside | Mains input frequency outside | – |
| tolerance | tolerance |
|
|
|
|
|
30. | Bypass momentarily outside | Short disturbances on bypass | – |
| tolerance | voltage |
|
|
|
|
|
31. | Bypass outside tolerance | Bypass input voltage outside | – |
|
| tolerance |
|
|
|
|
|
32. | Bypass frequency outside | Bypass input frequency outside | – |
| tolerance | tolerance |
|
|
|
|
|
33. | Output momentarily outside | Short disturbance on output | If message reappears - |
| tolerance | voltage (inrush current) | call for assistance |
|
|
|
|
34. | Output outside tolerance | Output voltage outside tolerance | Call for assistance |
|
|
|
|
35. | Output frequency outside | Output frequency outside | Call for assistance |
| tolerance | tolerance |
|
|
|
|
|
36. | High battery temperature | Battery ambient temperature too | Check system ambient |
|
| high | temperature, check fan, check for |
|
|
| airflow obstructions |
|
|
|
|
37. | Battery weak | Battery capacity below 75% or | Test battery capacity |
|
| battery MCCB/fuse switched off |
|
|
|
|
|
38. | Battery defective | Insufficient battery capacity or | Call for assistance |
|
| battery MCCB/fuse switched off |
|
|
|
|
|
39. | System locked in operation | UPS has made 10 attempts within | Unlock. |
| mode | 1 minute to switch from bypass to | If message reappears - |
|
| battery operation, or “High DC | call for assistance |
|
| warning” has appeared |
|
|
| times within 1 minute |
|
|
|
|
|
40. | RAM1 memory write error | UPS fault | Call for assistance |
|
|
|
|
41. | Memory write error | UPS fault | Call for assistance |
|
|
|
|
42. | Communication to VQ bypass | UPS fault | Call for assistance |
| lost |
|
|
|
|
|
|
43. | Communication to VQ output | UPS fault | Call for assistance |
| lost |
|
|
|
|
|
|
44. | Communication to DMU lost | UPS fault | Call for assistance |
|
|
|
|
45. | Communication to controller | UPS fault. | Call for assistance |
| lost | Display will show invalid UPS data |
|
|
|
|
|
26 | User Guide APC Silcon 480kW 400V UPS |