Service manual

Always On UPS Systems
M0704_NX_Series_Service_Manual V2.17 2012-06-12 ii
Table of Contents
1. SAFETY INSTRUCTIONS ..................................................................................................................... 1
2. GENERAL BLOCK DIAGRAM ............................................................................................................ 2
3. 6 PULSE RECTIFIER TOPOLOGY DRAWING ................................................................................ 3
4. 12 PULSE RECTIFIER TOPOLOGY DRAWING .............................................................................. 4
5. RECTIFIER .............................................................................................................................................. 5
6. INVERTER ............................................................................................................................................... 7
7. STATIC SWITCH .................................................................................................................................... 9
8. INTER-PCB DIAGRAM ........................................................................................................................ 11
9. PCB MODULE ....................................................................................................................................... 12
10. AUXILARY POWER SUPPLY ............................................................................................................ 13
11. STARTUP PROCEDURES ................................................................................................................. 14
11.1. System start up (from complete shutdown)....................................................................................................................14
11.2. From Manual Bypass To Inverter Procedure ..................................................................................................................15
12. UPS SHUTDOWN PROCEDURES ................................................................................................... 17
12.1. Complete UPS shut down procedure ................................................................................................................................17
12.2. From Inverter To Manual Bypass Procedure ..................................................................................................................17
13. LCD DISPLAY AND LED DESCRIPTION ........................................................................................ 19
14. THE LCD DISPLAY .............................................................................................................................. 24
14.1. Menu 0 – Main Menu ..............................................................................................................................................................24
14.2. Menu 1 – Select Menu ............................................................................................................................................................25
14.3. Menu 2 – Status Warning Menu ..........................................................................................................................................26
14.4. Menu 3 – Real Time Data Menu ...........................................................................................................................................27
14.5. Menu 4 – Historical Event Menu .........................................................................................................................................28
14.6. Menu 5 – Parameter Setting Menu .....................................................................................................................................29
14.7. Menu 6 – Rectifier Data Menu ..............................................................................................................................................30
14.8. Menu 7 – Reserve Data Menu ..............................................................................................................................................30
14.9. Menu 8 – Output Data Menu ................................................................................................................................................31
14.10. Menu 9 – Other Data Menu ...................................................................................................................................................31
14.11. Menu 10 – Boost Charge Setting Menu ............................................................................................................................32
14.12. Menu 11 – Data Time Setting Menu ...................................................................................................................................34
14.13. Menu 12 – Other Setting Menu ............................................................................................................................................34
15. STATUS INDICATOR TABLE ............................................................................................................ 35
16. BOARD LED INDICATION TABLE ................................................................................................... 36
17. BOARD FAULT DIAGRAMS .............................................................................................................. 37
18. BATTERY CABINET ............................................................................................................................ 45
18.1. Battery Runtime Charts.........................................................................................................................................................53
19. MAIN CONTROL (3A PCB) ................................................................................................................ 54
20. POWER SUPPLY (3B PCB) ............................................................................................................... 57
21. RECTIFIER CONTROL CIRCUIT (3C PCB) .................................................................................... 59
22. INVERTER PHASE CONTROL (3T PCB) ........................................................................................ 61
23. COMMUNICATIONS INTERFACE (3R PCB) .................................................................................. 63
24. WARNING LED’S AND SWITCHES (3W PCB) .............................................................................. 65
25. LCD DISPLAY ....................................................................................................................................... 65
26. MIMIC DIAGRAM (3L PCB) ................................................................................................................ 65
27. STATUS LED’S AND AUDIBLE ALARM (3AG PCB) ................................................................... 65
28. RECTIFIER MODULE .......................................................................................................................... 66
29. INVERTER MODULE ........................................................................................................................... 70
30. STATIC SWITCH .................................................................................................................................. 74
31. AUXILIARY POWER SUPPLY ........................................................................................................... 78
Section A SINGLE LINE DRAWINGS .......................................................................................................... 91
32. CONTACT INFORMATION ................................................................................................................. 94
32.1. Additional Purchases or Upgrades ...................................................................................................................................94
32.2. QA / Warranty Questions ......................................................................................................................................................94
32.3. Software Questions ................................................................................................................................................................94