
CONTENTS
YSAFET1
I. GENERAL DESCRIPTION .....................................................................................................................2
1.1 Introduction.......................................................................................................................................2
1.2 Design Concept................................................................................................................................3
1.2.1 The Operating Modes of UPS................................................................................................4
1.2.2 The Power Configuration of UPS...........................................................................................4
1.3 Technical Specifications...................................................................................................................7
II. FRONT PANEL.......................................................................................................................................8
2.1 Introduction.......................................................................................................................................8
2.2 Alarms And Status Messages ..........................................................................................................8
2.3 Menu Description .............................................................................................................................11
2.4 MAIN Menu ......................................................................................................................................13
2.5 MEASURES Menu Items .................................................................................................................13
2.6 ALARMS Menu Items.......................................................................................................................13
2.7 INFORMATION Menu Items ............................................................................................................14
2.8 SETTINGS Menu Items ...................................................................................................................14
2.9 COMMAND Menu Items ..................................................................................................................15
2.10 TIME Menu Items ..........................................................................................................................16
2.11 PASSWORD Menu Items..............................................................................................................16
III. PARALLEL OPERATION .......................................................................................................................17
3.1 Introduction.......................................................................................................................................17
3.1.1 Security ..................................................................................................................................17
3.1.2 Redundancy...........................................................................................................................17
3.1.3 Power Increase ......................................................................................................................17
3.2 Parallel Operation Modes.................................................................................................................17
3.2.1 Symmetric Parallel Mode.......................................................................................................17
3.2.2 Redundant Parallel Mode ......................................................................................................18
3.2.3 Hot Standby Mode .................................................................................................................19
3.3 Parallel Operation Mode Fault Codes..............................................................................................19
3.4 Parallel System Accessories............................................................................................................19
IV. OPERATING INSTRUCTIONS ...............................................................................................................21
4.1 Introduction.......................................................................................................................................21
4.2 OPERATING INSTRUCTIONS FOR A SINGLE UPS UNIT. (ONLINE OPERATION) ..................21
4.2.1 Procedure For Switching The UPS To Power The Load From a Power-Off Condition ........21
4.2.2 Procedure For Switching The UPS Into a Maintenance Bypass From
Normal Operation...................................................................................................................22
4.2.3 Procedure For Switching The UPS ON From a Maintenance By-Pass Power
Down Condition......................................................................................................................22
4.2.4 Procedure For Switching The UPS From Manual By-Pass
To Inverter (Normal Operation)..............................................................................................22
4.2.5 Procedure For Completely Powering Down The UPS...........................................................23
4.2.6 When Utility Power Is Interrupted ..........................................................................................23
4.3 OPERATING INSTRUCTIONS FOR PARALLEL CONNECTED UPS’s .........................................23
4.3.1 Procedure For Switching The UPS To Power The Load From a Power-Off Condition.........23
4.3.2 Procedure For Switching The UPS’s Into a Maintenance By-Pass From
Normal Operation...................................................................................................................24
4.3.3 Procedure For Switching The UPS-ON For Normal Operation From a
Maintenance By-Pass Power Down Condition ......................................................................25