Emerson Liebert Static Transfer Switch Operations Instructions

POWER PROTECTIONStatic Transfer Switch 2INSTALLATION, OPERATION & MAINTENANCE MANUAL100-1000 Amp, 50-60 Hz

viii Figure 50 Front Panel LEDs and Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

88 STS2 Touch Screen DisplayFigure 43 Comm Options Dialog BoxConfiguring the ModemThe Modem dialog box allows you to configure the optional,

STS2 Touch Screen Display 89 Figure 44 Modem Dialog Box2. Select the type of modem that the STS2 will be using:• Select INT if the STS2 will be commun

90 STS2 Touch Screen Display11. Configure the MODEM HEALTH CHECK.The Health Check verifies that the modem is working properly. This setting a

STS2 Touch Screen Display 91 Figure 45 Input Contact Isolator Dialog Box2. Select INPUT CONTACT 1.A keyboard is displayed to allow you to enter the na

92 STS2 Touch Screen DisplayThe STANDARD SET for the Programmable Relay Board settings are:The USER DEFINED SET allows you to assign faults a

STS2 Touch Screen Display 93 2. Select your configuration settings.• Select STANDARD SET to use the settings configured at the factory. See Go to step

94 STS2 Touch Screen DisplayFigure 47 System OptionsDual Output BreakerThis selection is set at the factory. The choice is set to YES to enab

STS2 Touch Screen Display 95 System IDMost of the settings for System ID are set by Liebert either at the factory or when the unit is installed.Order

96 STS2 Touch Screen DisplayFigure 49 History LogTo use the History Log:1. Select LOGS from the menu bar to open the Logs menu.2. Select eith

STS2 Touch Screen Display 97 13.6.6 HelpYou can select an event in the Event Display to display more information about that event in the Display Panel

ixList of TablesTable 1 Heat Output ...

98 STS2 Touch Screen Display

Operating the LED Display STS2 99 14.0 OPERATING THE LED DISPLAY STS2Certain models of the STS2 do not include the LCD Color Graphical Display with th

100 Operating the LED Display STS2Figure 50 Front Panel LEDs and Buttons14.1.2 Event ControlsWhen an alarm is triggered, a red LED is lit in

Operating the LED Display STS2 101 14.1.3 LED DefinitionsThe following table defines what item that these LEDs monitor:Table 16 LEDs—DefinedLED Item M

102 Operating the LED Display STS214.1.4 Button DefinitionsThe following table defines the buttons illustrated in Figure 50 and Figure 51.An

Operating the LED Display STS2 103 14.2 OperationsThis section discusses the system turn-on, shut-down and bypass procedures for LED-based STS2. If yo

104 Operating the LED Display STS214.2.2 Manual Transfer / Preferred Source SelectionThe preferred source buttons allow you to change the pre

Operating the LED Display STS2 105 4. Rotate and remove the interlock key.5. Insert the key into the CB4 bypass breaker interlock.6. Rotate interlock

106 Operating the LED Display STS2To return to normal mode:1. Verify that the LEDs for Source 2 are on, indicating that the source is supplyi

Specifications 107 15.0 SPECIFICATIONSThis section provides the specifications for the STS2.15.1 System ConfigurationThe STS2 can be set in several di

x

108 Specifications15.1.4 GroundingRefer to 5.3 - System Grounding on page 15 for specifications and instructions regarding ground-ing.15.1.5

Specifications 109 15.2 System ComponentsAll STS2 models provide two static transfer switches within one enclosure, with the ability to trans-fer betw

110 Specifications15.2.4 AccessThe STS2 is designed so all repairs and maintenance can be done from the front or top of the unit. All compone

Specifications 111 15.2.8 Color Graphical Display or LED DisplayThe display is located in the front of the unit. Front panel display is either an LCD

112 Specifications15.2.11 RS-232 Interface ParametersThe service terminal interface parameters are the following settings and cannot be chang

Event Message Help Text 113 16.0 EVENT MESSAGE HELP TEXTKey:ALL CAPS = event message displayed in the Event Display panel in the lower left c

114 Event Message Help TextS2 SCR OPENSource 2 SCR Open.One or more SCRs on Source 2 is open. Transferring between sources has been inhibited

Event Message Help Text 115 PWR SPLY DC A FAILPower Supply DC Bus A FailedThe primary power supply is no longer providing DC power to the con

116 Event Message Help TextPWR SPLY S2 AC FAILPower Supply Source 2 AC FailedThe AC input power to the power supplies from Source 2 has faile

Event Message Help Text 117 S1 VOLT SENSE FAILSource 1 Voltage Sense Module FailedThe module contained on the snubber monitoring the input vo

1IMPORTANT SAFETY INSTRUCTIONSSave these instructionsThis manual contains important instructions that should be followed during the installa

118 Event Message Help TextS2 SCR SENSE FAILSource 2 SCR Sense Module FailedThe module contained on the snubber monitoring the SCRs for Sourc

Event Message Help Text 119 Contact technical support; in the United States, call 1-800-LIEBERT (1-800-543-2378). Outside the 48 contiguous U

120 Event Message Help TextThis event was written to the Event Log, if so configured. The alarm has triggered a message to be sent to the mod

Event Message Help Text 121 S1 UVSource 1 Under Voltage (fast detection). The input voltage from Source 1 dropped below a set percentage of t

122 Event Message Help TextS1 OF/UFSource 1 Over Frequency/Under FrequencyThe frequency for Source 1 is running outside the acceptable operat

Event Message Help Text 123 Press SILENCE on the touch screen to turn off the audible alarm, if so configured. If you are accessing the STS2

124 Event Message Help TextIf configured to be a latching alarm, press RESET on the display. If you are accessing the unit from a terminal,

Event Message Help Text 125 If this alarm is set for manual reset mode, the alarm continues to show as active after the current returns to no

126 Event Message Help TextPressing the RESET button to returns the unit to the preferred source. Ensure that the condition that triggered th

Event Message Help Text 127 The alarm has triggered a message to be sent to the modem, if so configured.If configured to be a latching alarm,

2 OVERVIEW OF MANUALThe STS2 Installation, Operation and Maintenance Manual is organized in a logical progression so that you can follow the

128 Event Message Help TextPress SILENCE on the touch screen to turn off the audible alarm, if so configured. If you are accessing the STS2 s

Event Message Help Text 129 If configured to be a latching alarm, press RESET on the display. If you are accessing the unit from a terminal,

130 Event Message Help TextPress SILENCE on the touch screen to turn off the audible alarm, if so configured. If you are accessing the STS2 s

Event Message Help Text 131 INPUT CONTACT #7Input Contact Isolator #7Occurrence of the indicated external event has been detected by Input Co

132 Event Message Help TextIf configured to be a latching alarm, press RESET on the display. If you are accessing the unit from a terminal,

Event Message Help Text 133 If configured to be a latching alarm, press RESET on the display. If you are accessing the unit from a terminal,

134 Event Message Help Text

Maintenance 135 17.0 MAINTENANCEMinimal periodic maintenance of the STS2 is required. As with all electrical distribution compo-nents, the sy

136 Maintenance17.4 Contacting LiebertTo contact Liebert Global Services in the United States for information or repair service , call1-800-L

3SUPPORT INFORMATIONIf you require assistance for any reason, in the United States, call 1-800-LIEBERT (1-800-543-2378). Outside the 48 cont

The Company Behind the ProductsWith over a million installations around the globe,Liebert is the world leader in computer protectionsystems. Since its

4 Channel 4:Channel 5:Channel 6:Channel 7:Channel 8:Channel 9:Channel 10:PRB Notes:

5INPUT CONTACT ISOLATOR SETTINGS RECORDThe Input Contact Isolator board (ICI) provides an STS2 module interface for up to eight external use

6

Safety Precautions 7 1.0 SAFETY PRECAUTIONSRead this manual thoroughly before working with the static transfer switch.Be sure to review the w

8 Unpacking and Inspections2.0 UNPACKING AND INSPECTIONSA high-quality installation begins on the receiving dock. The STS2 and its packaging

Unpacking and Inspections 9 2.2.1 Handling ConsiderationsThe static switch is bolted to a wooden shipping pallet to allow handling by forklif

10 Location Considerations3.0 LOCATION CONSIDERATIONS The STS2 should be placed in a clean, cool and dry location. The STS2 requires only fro

Location Considerations 11 3.4 AltitudeThe standard units are designed for full load operation up to 4000 feet (1200 m) above sea level. See

12 Locating the STS24.0 LOCATING THE STS2This section provides instructions for leveling the STS2 and anchoring the unit to the floor, shoul

Power and Control Wiring 13 5.0 POWER AND CONTROL WIRINGAll power and control wiring should be installed by a qualified electrician. All powe

14 Power and Control WiringFigure 3 Typical Static Transfer Switch One-Line DiagramThe input and output power wire size should be based on th

Power and Control Wiring 15 For preparation purposes, the following tables provide the dimensions and wire sizes for the input junction boxes

16 Power and Control WiringFigure 4 Typical One-Line Diagram of Two PDUs and a Static Transfer Switch5.4 Control Wiring ConnectionsNo control

Power and Control Wiring 17 See 10.3 - Enabling Remote Source Selection on page 61 for instructions on enabling the Remote Source Selection o

iTable of ContentsLIST OF FIGURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18 Options6.0 OPTIONSThis section discusses the options available for the STS2. The communications options are also dis-cussed in 12.0 - Comm

Options 19 6.2 Input Contact Isolator BoardThe Input Contact Isolator Board (ICI) provides an STS2 module interface for up to eight external

20 Options6.5 Network Interface Card (NIC)An OpenComms Network Interface Card (NIC) enables the STS2 to communicate to a network management s

Options 21 6.9 Input Junction Boxes and CablesTwo input power junction boxes and interconnecting cables provide under floor connection for th

22 Options

Installation Drawings 23 7.0 INSTALLATION DRAWINGSFigure 5 Outline Drawing: 100 – 250 Amp STS2STATICSWITCH2/OUTLINE/PS21110010/23/02PS211100G

24 Installation DrawingsFigure 6 Outline Drawing: 400 – 600 Amp STS2FRONT VIEW SIDE VIEW CONTROL CABLE TOP ENTRY AREACABLE TOP ENTRY AREA E

Installation Drawings 25 Figure 7 Outline Drawing: 800 – 1000 Amp STS2BOTTOM POWER CABLE AIR FILTER DO NOT BLOCKAIR INTAKE AREAFRONT VIEW

26 Installation DrawingsFigure 8 Outline Drawing: 100 – 250 Amp STS2 with a Key Lockout Switch OptionSTATICSWITCH2/OUTLINE/PS21110111/6/02PS2

Installation Drawings 27 Figure 9 Outline Drawing: 400 – 600 Amp STS2 with a Key Lockout Switch OptionFRONT VIEW SIDE VIEW CONTROL CABLE TOP

ii 6.0 OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186.1 Pro

28 Installation DrawingsFigure 10 Outline Drawing: 800 – 1000 Amp STS2 with the Key Lockout Switch OptionBOTTOM POWER CABLE AIR FILTER DO

Installation Drawings 29 Figure 11 Seismic Anchor Drawing: 100 – 250 Amp STS2STATICSWITCH2/OUTLINE/PS21110510/24/02PS211105OUTLINE DRAWINGSEI

30 Installation DrawingsFigure 12 Seismic Anchor Drawing: 400 – 600 Amp STS25. MOVE CABINET INTO POSITION WITH REAR TABS INTO SLOTS OFFLOOR B

Installation Drawings 31 Figure 13 Seismic Anchor Drawing: 800 – 1000 Amp STS25. MOVE CABINET INTO POSITION WITH REAR TABS INTO SLOTS OFFLOOR

32 Installation DrawingsFigure 14 Electrical Field Connections Drawing: 100 – 250 Amp STS2 with Single Output BreakerSTATICSWITCH2/EFC/PS2121

Installation Drawings 33 Figure 15 Electrical Field Connections Drawing: 100 – 250 Amp STS2 with Dual Output BreakersNEUTRAL BUSSOURCE 1 INPU

34 Installation DrawingsFigure 16 Electrical Field Connections Drawing: 400 – 600 Amp STS2 with Single Output BreakerSTATICSWITCH2/OUTLINE/PS

Installation Drawings 35 Figure 17 Electrical Field Connections Drawing: 400 – 600 Amp STS2 with Dual Output BreakersSTATICSWITCH2/OUTLINE/PS

36 Installation DrawingsFigure 18 Electrical Field Connections Drawing: 800 – 1000 Amp STS2 with Single Output BreakerSECTION A-ASIDE VIEW(WI

Installation Drawings 37 Figure 19 Electrical Field Connections: 800 – 1000 Amp STS2 with Dual Output BreakersFILE NAME: REV. NO.DWG. NO.ELEC

iii10.0 OPERATING INSTRUCTIONS FOR THE TOUCH SCREEN INTERFACE . . . . . . . . . . . . . . . . . 5810.1 Normal System Turn-On. . . . . . . . . . . . .

38 Installation DrawingsFigure 20 Circuit Breaker ScheduleSTATICSWITCH2/BRKTABLEALL/PS21400010/24/02PS214000CIRCUIT BREAKER SCHEDULE100AMP TO

Installation Drawings 39 Figure 21 Control Connection Location Diagram: 100 – 600 Amp STS2STATICSWITCH2/CONTROLWIRE/PS213000-01(C)6/9/03PS213

40 Installation DrawingsFigure 22 Control Connection Location Diagram: 800 – 1000 Amp STS2PROGRAMMABLE RELAY SEE OPTIONLOCATION DETAILBOA

Installation Drawings 41 Figure 23 Control Wiring for Remote Source Selection OptionSTATICSWITCH2/CONTROLWIRE/PS213007-01(C)6/9/03PS213007CON

42 Installation DrawingsFigure 24 Control Wiring for the Programmable Relay Board OptionSTATICSWITCH2/CONTROLWIRE/PS213001-013/24/03PS213001C

Installation Drawings 43 Figure 25 Control Wiring for the Input Contact Isolator Board OptionSTATICSWITCH2/CONTROLWIRE/PS213002-016/2/03PS213

44 Installation DrawingsFigure 26 Control Wiring for Comms Board (see Figure 27 on page 45 for Internal Modem wiring)STATICSWITCH2/CONTROLWIR

Installation Drawings 45 Figure 27 Control Wiring for the Internal Modem OptionSTATICSWITCH2/CONTROLWIRE/PS213004-01(C)6/9/03PS213004CONTROL

46 Installation DrawingsFigure 28 Control Wiring for the Network Interface Card (NIC) OptionSTATICSWITCH2/CONTROLWIRE/PS213005-013/24/03PS213

Installation Drawings 47 Figure 29 Control Wiring for the RS-232 PortFILE NAME: REV. NO.DWG. NO.CONTROL WIRINGRS-232 INTERFACESTATIC TRANSFER

iv 13.7 Cleaning the LCD Touch Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9714.0 OPERA

48 Installation DrawingsFigure 30 Outline Drawing for Input Junction BoxSTATICSWITCH2/OUTLINE/PS21100511/7/02PS211005OUTLINE DRAWINGINPUT JUN

Installation Drawings 49 Figure 31 Color LCD Touch Screen DisplaySTARTUP PROC.FILE NAME: REV. NO.DWG. NO. S1 SCR OPENOUTLINE DRAWINGCOLOR LC

50 Installation Drawings

Introduction to STS2 Operations 51 8.0 INTRODUCTION TO STS2 OPERATIONS8.1 System DescriptionA STS2 provides an automatic, seamless transfer b

52 Introduction to STS2 Operations8.1.2 Reliability and Agency RequirementsThe STS2 is designed for high reliability and high availability wi

Introduction to STS2 Operations 53 8.2.3 Transfer InhibitFor a transfer to be completed between input sources, the sources must meet certain

54 Theory of Operation9.0 THEORY OF OPERATION9.1 General DescriptionThe STS2 contains all the equipment necessary to prevent an interruption

Theory of Operation 55 9.1.4 Emergency TransferTo ensure that power remains connected to the load, the STS2 automatically performs an emer-ge

56 Theory of OperationHardware• The STS2 operator interface in the Color Graphical Display unit is designed to provide all of the information

Theory of Operation 57 9.2.3 SCRsBrick-type SCRs are used rated to carry the full 100% rated load. Because the unit is a fuseless design with

v17.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13517.1 Proper Tightening

58 Operating Instructions for the Touch Screen Interface10.0 OPERATING INSTRUCTIONS FOR THE TOUCH SCREEN INTERFACEAfter the initial equipment

Operating Instructions for the Touch Screen Interface 59 Figure 33 STS2 Touch Screen Display4. Close CB1. 5. Verify that Source 1 voltages ar

60 Operating Instructions for the Touch Screen InterfaceIf your system contains the LED front panel instead of the LCD touch screen, refer to

Operating Instructions for the Touch Screen Interface 61 If the Transfer Inhibit message is displayed, check for alarm messages on the Active

62 Operating Instructions for the Touch Screen InterfaceFigure 35 Gate Board Viewing Slot LocationsIf the Color Graphical Display is not avai

Operating Instructions for the Touch Screen Interface 63 To return to the normal mode:1. Remove the key from CB5 and insert it in the CB1 bre

64 Operating Instructions for the Touch Screen InterfaceTo return to normal mode:1. Insert the key in the CB2 breaker interlock.2. Rotate the

Alarm and Faults 65 11.0 ALARM AND FAULTSAlarms and faults are events that are triggered when the operation of the static transfer switch fal

66 Alarm and FaultsSee Event Masks on page 82 for instructions on setting the mask type via the touch screen display. See the 12.1.4 - Settin

Alarm and Faults 67 The History Log has the following fields:• Replay Rate — indicates how long it takes for the replay to play. Use the UP a

vi

68 Alarm and Faults.Table 9 Event MessagesID Alarm Message Description/Cause Action001 S1 SCR SHORT One or more of the SCRs for Source 1 have

Alarm and Faults 69 083 AUTO REXFER INHIBIT Automatic retransfer is inhibited. A, E084 CB1 (S1) OPEN Source 1, Circuit Breaker 1 is open. A,

70 Communication Interfaces12.0 COMMUNICATION INTERFACESThe STS2 monitoring system offers several choices for communications.The RS-232 termi

Communication Interfaces 71 12.1.1 Connecting and Using a TerminalAn RS-232 connection can be used to connect the STS2 to either a terminal o

72 Communication Interfaces12.1.2 Configuring the STS2 via the TerminalThe SPT command is used to configure the systems setpoints. The SVT sy

Communication Interfaces 73 Value ParameterItem settings, depending on what they are, use various value types. Table 11 provides a list of th

74 Communication Interfaces12.1.3 Setting Bitpacked Options with the TerminalFive sets of options and features settings are available through

Communication Interfaces 75 The value parameter settings are in the form of a bit-packed word (in hexidecimal notation). In other words, each

76 Communication InterfacesThe bits are set in reverse order, from bit 15 on the left to bit 0 (zero) on the right. The bits are grouped in f

Communication Interfaces 77 In hex this equates to (digits in the value parameter cannot have spaces between them):0081So your command to ind

viiList of FiguresFigure 1 Recommended Derating for High Altitude Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Figur

78 Communication Interfaces

STS2 Touch Screen Display 79 13.0 STS2 TOUCH SCREEN DISPLAYThe STS2 can be configured with a Color Graphical LCD touch screen display that allows you

80 STS2 Touch Screen Display13.2 Menu OverviewThe touch screen menu provides access to configuration settings and more device information.The

STS2 Touch Screen Display 81 13.2.1 SecurityBecause the STS2 Color Graphical Display provides access to various configuration and monitoring choices,

82 STS2 Touch Screen Display13.3 Mimic DisplayThe Mimic display provides a color diagram of the operation of the STS2. This display imitates

STS2 Touch Screen Display 83 To set the event masks:1. Access the Event Mask dialog box:a. Select CONFIG.b. Select EVENT MASK from the pop-up menu.The

84 STS2 Touch Screen DisplayFigure 41 User Settings Dialog BoxSource Set PointsThe Source 1/2 Set Points allows you to configure trigger poin

STS2 Touch Screen Display 85 Figure 42 Source Set Points2. Select 1 to configure the settings for Source 1.3. Configure the settings using the keypad

86 STS2 Touch Screen Displaydeviation setting is the allowable frequency variation from nominal (60.0 or 50.0 Hz) before activating the frequ

STS2 Touch Screen Display 87 System SettingsThe System Settings choice under the Config menu displays another pop-up menu with three choices:• Comm Op