MGE UPS Systems EPS 6000 2 11Operation

J: Inverter desynchronized

This orange LED indicates that the inverter output frequency is not synchronized

with the bypass AC input (mains 2).

K: Transfer fault

This red LED indicates a transfer fault, which may be one or

more of the following conditions:

• Inverter output contactor K3N fault

• Current sharing relay fault

• Static switch power supply fault

• Transfer control board fault

• Power supply board fault

L: Overload

This orange LED indicates an alarm condition resulting from one

or more of the following conditions:

• UPS module inverter current above rating

• UPS module output current above rating

• SSC output current above rating

• UPS module and/or SSC shutdown due to excessive load current

M: Bypass AC input (mains 2) outside tolerance

This orange LED indicates that the bypass AC input (mains 2) voltage and/or

frequency are too high or too low.

N: Maintenance position

This orange LED indicates that circuit breakers QF1, Q4S, Q5N, or Q3BP

are set to the maintenance position. The UPS module or SSC is

not available for load protection.

Test connector (Figure 2-8)

This 9-pin connector is reserved for service. It is used to connect

the cabinet to a computer, allowing system calibration, personalization,

and computer-aided diagnostics.

Pushbuttons

Following are brief descriptions of the function of the hidden panel pushbuttons,

shown in Figure 2-8.

Clear fault log

Pressing this pushbutton clears the alarms stored in memory, allowing the unit to

restart. Memorized alarms cannot be cleared until the condition causing the alarm

has been corrected.

Audible alarm reset

Pressing this pushbutton stops the audible alarm. Should a new fault condition at

a higher alarm level occur, the alarm will sound again.

2 — 11Operation

User’s guide

Contents

Main IMPORTANT SAFETY INSTRUCTION Page Warranty Service and Factory Repair - Call 1 - 800 - 438 - 7373 Proprietary Rights Statement Revision History EPS 6000 UPS Shared Systems Users Guide Contents Section I Introduction Section II Operation iii Section III Maintenance and Service EPS 6000 UPS Shared Systems Glossary iv Contents Illustrations vContents vi Contents Page How to use this manual viii Introduction 1.1 General Description 1.0 Scope 1 1 Tab le 1-1 Tab le 1-2 1 2 Introduction Figure 1-1 Figure 1-2 STATIC SWITCH CABINET (SSC) MAINTENANCE BYPASS (OPTIONAL) Page 1-3 Q1 Q5N 23456 + C4B4A4 1-4 K3N 1 Q1 Q5N 23456 + 1-5 1 7Introduction 1-6 1 8 Introduction 1-7 1 9Introduction 1-8 1 10 Introduction 1-9 6 543 1 2 F10,F11 ACOZ 1 11Introduction 1-10 STATIC SWITCH CABINET (WITH FRONT DOORS REMOVED) MAINTENANCE BYPASS CABINET (WITH FRONT DOOR REMOVED) 1 12 Introduction 1.5.1 Electrical 1.5 Specifications, UPS Modules 1.4 Options 1 13Introduction 1.5.2 Mechanical 1 14 Introduction Page Page Operation Figure 2-1 2.1.1 Static Switch Cabinet Operation 2.1 System Operation Overview 2.0 Scope Figure 2-2 2.1.3 On-Battery Operation 2.1.2 Normal Operation 2 2 Operation Figure 2-3 2.2.1 Front Panel 2.2 Indicators and Controls 2 3Operation Page 2 5Operation 2.2.2 Alphanumeric Display and Controls 2 6 Operation Figure 2-6 Figure 2-7 2.2.3 Hidden Panel 2 9Operation 2 10 Operation 2 11Operation Figure 2-8 2 12 Operation 2.2.4 Circuit Breakers, Contactors and Switches 2 13Operation attached load. Figure 2-9 2 14 Operation 2-10 K3N 1 Q1 Q5N 23456 + 2-11 K3N 1 Q1 Q5N 23456 + 2-12 2 17Operation 2-13 2 18 Operation 2-14 2 19Operation 2-15 2 20 Operation 2-16 6 543 1 2 F10,F11 ACOZ 2 21Operation 2-17 2 22 Operation Page Figure 2-19 2.3.1 Settings Figure 2-20 LANGUAGE = ENGLISH U.S. =SELECT *=CONFIRM. Figure 2-21 2.3.2 Alarms Select ENGLISH U.S. as the display language to match the displays as presented in this manual. 2 25Operation Figure 2-22 2.3.3.1 Voltage Measurements 2.3.3 Measurements 2 26 Operation Figure 2-23 2 27Operation Figure 2-24 2.3.3.3 Power and Frequency Measurements 2 28 Operation Figure 2-25 2.4.1 Checks Before Start-up 2.4 Normal Operating Procedures 2 29Operation 2.4.2 Start-up 2 30 Operation 2.4.3 Checks After Start-up 2 31Operation Page Page EPS 6000 UPS Shared Systems 2 34 Operation Page 2.4.6.1 Uninterrupted Transfer Conditions 2.4.6 Forced Transfers 2 36 Operation Page 2 38 Operation 2 39Operation Operation 2 40 2 41Operation 2 42 Operation 2 43Operation Page Maintenance and Service 3.2 Preventive Maintenance 3.1 Safety Instructions 3.0 Scope 3 1 3.3 Replacement Parts 3 2 Maintenance and Service 3.4 Troubleshooting and MGE Servicing 3 3Maintenance and Service Page Glossary g 1 g 2 Glossary g 3Glossary g 4 Glossary g 5Glossary Page Reorder form 1660 Scenic Avenue Costa Mesa, CA 92626 Use this form EPS 6000 UPS Users Guide, Shared Systems 86-130034-00