Powerware (4080 KVA) 9390 User Manual Page 67
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Understanding UPS Operation
7-13
Powerware
®
9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev C
The parallel system can be transferred from Normal mode to Bypass mode manually.
However, the parallel system automatically switches to Bypass mode whenever the UPMs
can no longer supply the critical load. If the parallel system transfers to Bypass mode from
Normal mode due to an output voltage deviation, the parallel system automatically
attempts to return to Normal mode (up to three times within a 10-minute period). After
three transfer attempts or an overload, the system locks the c ritical load to the bypass
source and requires operator intervention to transfer.
Bypass mode is a normal operating mode, not an alarm condition. However, if the parallel
system is unable to return to Normal mode following an automatic transfer to Bypass
mode, an alarm condition is recorded.
TheBypassmayalsobeusedwhenthemodulesinthesystemmustbeshutdownto
perform routine maintenance or repairs.
In the Parallel Redun dant (N + 1) arrangement, the continuous-duty static switch in each
module operates to support the applied loads on bypass. If both units are in NORMAL and
one unit trips offline, the remaining unit does not go to bypass as long as it has the
capacity to support the load.
In the Parallel Capacity (N + 0) arrangement, if one unit trips offline and goes to BYPASS,
the remaining units also go to BYPASS.
- (40–80 kVA) 1
- IMPORTANT SAFETY INSTRUCTIONS 2
- SAVE THESE INSTRUCTIONS 2
- Consignes de sécurité 2
- ClassAEMCStatements 2
- Table of Contents 3
- Section II – Operation 4
- List of Figures 8
- Powerware 10
- Chapter 1 Introduction 11
- 1.2 Using This Manual 13
- 1.4 Safety Warnings 15
- 1.5 For More Information 16
- 1.6 Getting Help 16
- Section I Installation 17
- 2.2 Preparing the Site 19
- 3.2 UPS Cabinet Installation 23
- Installing the UPS System 24
- Front View 25
- Rear View 26
- 3.2.5.3 X-Slot Connections 33
- Installation Checklist 35
- Chapter 4 Batteries 39
- 4.2 Installing Batteries 40
- EMERGENCY OFF 41
- UNINTERRUPTIBLE POWER SYSTEM 41
- Plug-In Terminal 45
- Block J3 45
- Section II Operation 53
- UPS Cabinet 55
- 7.2.1 Single Module RT Modes 56
- 7.2.2 Normal Mode – RT 58
- Understanding UPS Operation 59
- 7.2.3 Bypass Mode – RT 60
- 7.2.4 Battery Mode – RT 62
- 7.3.2 Normal Mode – Parallel 65
- 7.3.3 Bypass Mode – Parallel 66
- 7.3.4 Battery Mode – Parallel 68
- 7.4.1 Input Rectifier 69
- 7.4.2 Inverter 69
- 7.4.4 Bypass 70
- 7.4.5 Batteries 70
- 8.1 UPS Standard Features 71
- 8.1.7 Installation Features 72
- 8.2.3 HotSync Parallel System 73
- 8.2.4 Optional X-Slot Cards 73
- 8.2.5 Remote Monitor Panel 73
- 8.2.6 Relay Interface Module 73
- PRESS ANY KEY TO CONTINUE 75
- 9.2.1 Mimic Screen 77
- 9.2.2 Event Screens 78
- 9.2.3 Unit Meter Screens 80
- 9.2.4 System Meters Screens 83
- Meters screen 85
- CONTRAST ADJUST 89
- ENTER PASSWORD 91
- CHANGE PASSWORD 93
- MM/DD/YYYY 95
- DD/MM/YYYY 95
- TIME FORMAT SETUP 95
- 2702 2004 15 42 YES 96
- SET DATE AND TIME MM/DD/YYYY 96
- 27 02 2004 15 42 YES 97
- SET DATE AND TIME DD/MM/YYYY 97
- COM PORT SETUP 98
- System Controls Screen 100
- Instructions.” 101
- Load Off Screen 102
- Reading the Status Indicators 103
- Using the Control Panel 104
- 10.1SingleModuleOperation 105
- UPS Operating Instructions 106
- . The input and output 108
- 10.1.8 Charger Control 109
- 10.2.5 Single UPM Shutdown 115
- Using Features and Options 120
- 11.4 Relay Interface Module 122
- ON GENERATOR 123
- 12.1 General 125
- 12.2 System Event Horns 125
- 12.3 System Event Indicators 125
- 12.4 System Event Messages 125
- Horn Phone Relay Log* 126
- Indication 126
- Log*RelayPhoneHorn 127
- Responding to System Events 134
- Chapter 13 Communication 135
- 13.3 Remote Notification 136
- 13.4 Terminal Mode 137
- 13.4.2 Event History Log 138
- Communication 139
- 14.2.1 DAILY Maintenance 142
- 14.2.2 MONTHLY Maintenance 143
- 14.2.3 ANNUAL Maintenance 143
- 14.2.4 BATTERY Maintenance 143
- Maintaining the UPS System 144
- 15.2.1 UPS System Input 145
- Reduced for Generator 145
- 15.2.2 UPS System Output 146
- ¦1% (10% to 100% load) 146
- 15.2.3 Environmental 146
- Product Specifications 147
- Appendix A 149
- Installation Information 149
- DESCRIPTION: 150
- DRAWING NO: SHEET: 150
- REVISION: 150
- 208V INPUT AND 208V OUTPUT 154
- 480V INPUT AND 480V OUTPUT 154
- SINGLE OR DUAL FEED 154
- TYPICALPARALLELSYSTEM 156
- (1+1 AND 2+0 CONFIGURATIONS) 156
- (2+1 AND 3+0 CONFIGURATIONS) 157
- (3+1 AND 4+0 CONFIGURATIONS) 158
- TOP VIEW 175
- BOTTOM VIEW 175
- LEFT SIDE VIEW 176
- RIGHT SIDE VIEW 176
- TERMINAL DETAIL 178
- INTERFACE TERMINAL LOCATIONS 182
- INTERFACE TERMINALS 183
- Hot Sync CAN Bridge Card 187
- PARALLEL SYSTEM CAN WIRING 188
- PARALLEL SYSTEM BACK UP 189
- CONTROL (PULL CHAIN) 189
- ALTERNATE PARALLEL SYSTEM 190
- BACK UP CONTROL 190
- (PULL CHAIN) WIRING 190
- SUPERVISORY CONTACT MODULE 191
- TERMINAL LOCATIONS 191
- OPTIONAL REMOTE MONITOR PANEL 198
- 164201535---11 198
- 164201535---12 199
- 164201535---12 2 of 2 200
- Warranty 203
- *164201535C* 206
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