Table of Contents
1 | Basic Operation | 3 | |
| 1.1 | Technical Specifications | 3 |
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| KX Models | 3 |
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| K and KTV Models | 4 |
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| SU80K Model | 5 |
| 1.2 | Features | 6 |
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| 1.2.1 Advanced Features | 6 |
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| 1.2.2 Control Panel Features | 6 |
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| 1.2.3 Front and Rear Panel Features | 7 |
| 1.3 | Operating Principles | 13 |
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| 1.3.1 System Layout | 13 |
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| 1.3.2 Internal Battery Layout | 13 |
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| 1.3.3 Power Module Layout | 14 |
| 1.4 | Opening and Closing the Unit | 14 |
| 1.5 | Operating Modes | 15 |
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| 1.5.1 Online (Normal) Mode (Single UPS) | 15 |
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| 1.5.2 Battery Backup Mode (Single UPS) | 15 |
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| 1.5.3 Auto Bypass Mode (Single UPS) | 15 |
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| 1.5.4 Manual Bypass Mode (Single UPS) | 15 |
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| 1.5.5 Online Mode (Parallel UPS) | 16 |
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| 1.5.6 Battery Backup Mode (Parallel UPS) | 16 |
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| 1.5.7 Auto Bypass Mode (Parallel UPS) | 16 |
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| 1.5.8 Manual Bypass Mode (Parallel UPS) | 17 |
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| 1.5.9 Hot Standby Mode (Parallel UPS) | 17 |
| 1.6 | 18 | |
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| 1.6.1 Control Panel and Breaker Diagrams | 18 |
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| 1.6.2 Preliminary Checklist (Single UPS) | 18 |
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| 1.6.3 Standard | 18 |
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| 1.6.4 Battery | 19 |
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| 1.6.5 Manual Bypass Procedure (Single UPS) | 20 |
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| 1.6.6 Shutdown Procedure (Single UPS) | 20 |
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| 1.6.7 Preliminary Checklist (Parallel UPS) | 21 |
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| 1.6.8 | 21 |
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| 1.6.9 Shutdown Procedure (Parallel UPS) | 22 |
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| 1.6.10 Manual Bypass Procedure (Parallel UPS) | 23 |
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| 1.6.11 Switching from Manual Bypass to Normal Mode |
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| (Parallel UPS) | 24 |
| 1.7 | Printed Circuit Boards (PCB) | 25 |
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| 1.7.1 PCB Location (System) | 26 |
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| 1.7.1.1 KX Models | 26 |
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| 1.7.1.2 K Models | 28 |
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| 1.7.1.3 KTV Models | 32 |
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| 1.7.2 PCB Power Module | 33 |
| 1.8 | Block and Wiring Diagrams | 34 |
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| 1.8.1 KX Models | 34 |
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| 1.8.2 K Models | 40 |
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| 1.8.3 KTV Models | 45 |
2 | Theory of Operation | 48 | |
| 2.1 AC Auxiliary Power Circuit | 48 | |
| 2.2 | DC Auxiliary Power Circuit | 51 |
| 2.3 Auxiliary Power Failure Detection | 51 | |
| 2.4 | Output Current Detection | 52 |
| 2.5 | Input Voltage Detection | 53 |
| 2.6 | Output Voltage Detection | 54 |
| 2.7 | Battery Voltage Detection | 55 |
| 2.8 | Bypass SCR | 56 |
| 2.9 | Bypass SCR Driver | 57 |
| 2.10 Watchdog for System MCU | 58 |
| 2.11 | LCD Panel Control Circuit | 59 | |
| 2.12 | Fan Control Circuit | 60 | |
| 2.13 | Bypass SCR Temperature Detection | 61 | |
| 2.14 | Communication Circuit for RS232 | 61 | |
| 2.15 | Communication Circuit for Slots | 62 | |
| 2.16 | Communication Circuit for Output Dry Contact | 63 | |
| 2.17 | Communication Circuit for Input Dry Contact and REPO | 64 | |
| 2.18 | External Battery Cabinet Temperature Detection | 65 | |
| 2.19 | Detection Circuit for Manual Bypass Switch | 66 | |
| 2.20 | Detection Circuit for Output Breaker | 66 | |
| 2.21 | Control Circuit for Power Module | 67 | |
| 2.22 Transformer Over Temperature Detection | 71 | ||
3 Communication | 72 | |||
| 3.01 | RS232 Port | 72 | |
| 3.02 | Emergency Power Off (EPO) | 72 | |
| 3.1 Setting EEPROM on the | 74 | ||
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| 3.1.1 Polling and Updating EEPROM | 74 | |
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| 3.1.2 Calibrating EEPROM Gain | 75 | |
| 3.2 | Setting Output Dry Contact Status | 76 | |
| 3.3 | Upgrading Firmware for the System Board | 77 | |
| 3.4 | Upgrading Firmware for the Power Module | 82 | |
| 3.5 | Downloading the Event Log | 90 | |
4 | Internal Battery | 91 | ||
| 4.1 | Installing and Removing Internal Batteries | 92 | |
| 4.2 | Battery Cabinet | 95 | |
5 | Troubleshooting | 98 | ||
| 5.1 Alarm Messages | 98 | ||
| 5.2 Troubleshooting Flow Charts | 100 | ||
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| 5.2.1 “MAIN VOLT/FREQ NOK” | 100 | |
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| 5.2.2 “MAIN SEQUENCE NOK” | 101 | |
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| 5.2.3 “BYPASS VOLT/FREQ NOK” | 102 | |
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| 5.2.4 “BYPASS SEQUENCE NOK” | 103 | |
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| 5.2.5 “BYPASS STATIC SWITCH OVER TEMPERATURE” | 103 | |
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| 5.2.6 “BYPASS STATIC SWITCH FAULT” | 104 | |
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| 5.2.7 “BYPASS STATIC SWITCH OVERLOAD” | 104 | |
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| 5.2.8 “UPS INTERNAL COMM ABNORMAL” | 105 | |
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| 5.2.9 “BATTERY TEST FAIL” | 106 | |
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| 5.2.10 “BATTERY OVER CHARGE” | 106 | |
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| 5.2.11 “BATTERY BAD” | 107 | |
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| 5.2.12 “BYPASS FAN FAILURE” | 108 | |
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| 5.2.13 “TRANSFORMER OVERHEAT” | 109 | |
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| 5.2.14 “PS OUTPUT VOLT NOK” | 110 | |
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| 5.2.15 “PS EXT PARALLEL COMM ABNORMAL” | 111 | |
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| 5.2.16 “PARALLEL FAILURE” | 112 | |
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| 5.2.17 “REDUNDANCY LOSS” | 113 | |
6 Power Module | 114 | |||
| 6.1 | Failure Power Module Identify | 114 | |
| 6.2 | Power Module Replacement | 117 | |
7 | Preventive Maintenance | 121 | ||
| 7.1 | Safety Overview | 121 | |
| 7.2 | Suggested tools and supplies | 121 | |
| 7.3 | UPS Procedure | 121 | |
| 7.4 | Internal Battery Procedure | 122 | |
Appendix A Service Equipment and Tools | 123 | |||
Appendix B Torque Table | 124 | |||
Appendix C PCB and Test Point | 128 |
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