Page 3 - TABLE OF CONTENTS; Liebert IntelliSlot
i TABLE OF CONTENTS I MPORTANT S AFETY I NSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 O VERVIEW OF M ANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.0 S AFETY ...
Page 4 - ii; STS2 O
ii 7.0 I NSTALLATION D RAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.0 I NTRODUCTION TO L IEBERT STS2 O PERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 8.1 System Description. . . . . . . . . . . . . . . . ...
Page 5 - iii; STS2 T
iii 12.0 C OMMUNICATION I NTERFACES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 12.1 Using the RS-232 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 12.1.1 Connecting and Using a T...
Page 6 - iv; STS2 LED D
iv 14.0 O PERATING THE L IEBERT STS2 LED D ISPLAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 14.1 LEDs and Buttons and Key Lockout Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 14.1.1 Front Panel Controls . . . . . . . . . . . . . . . . ...
Page 7 - FIGURES
v FIGURES Figure 1 Recommended derating for high altitude operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 2 Maximum ambient temperature for full load operation at higher altitudes . . . . . . . . . . . . . . . . . . 7 Figure 3 Typical static transfer swit...
Page 8 - TABLES
vi Figure 53 User settings dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90Figure 54 Source setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
Page 9 - SAVE THESE INSTRUCTIONS; maintenance of the Liebert STS2.; WARNING; personnel should perform maintenance on the static switch.; NOTE; CAUTION; Locate the center of gravity symbols
1 I MPORTANT S AFETY I NSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions that should be followed during the installation and maintenance of the Liebert STS2. ! WARNING The unit is supplied by more than one power source. The unit contains hazardous voltages if any of the...
Page 11 - Safety Precautions; AFETY; Important Safety Instructions on page 1; Refer to the; Handling Considerations on page 5; before attempting to move the unit.; should perform maintenance on the static switch.; than solidly grounded-wye sources may cause damage to the switch.; Read this entire manual before installing and operating the unit.
Safety Precautions 3 1.0 S AFETY P RECAUTIONS Read this manual thoroughly before working with the Liebert STS2.Be sure to review the warning under Important Safety Instructions on page 1 . Refer to the Handling Considerations on page 5 before attempting to move the unit. Under typical operation and ...
Page 12 - Unpacking and Inspections; NPACKING; and unpacking of the Liebert STS2.; External Inspections; carrier and to Liebert Services immediately.; Unloading and Handling; on page 5 for instruction on removing the Liebert STS2 from the
Unpacking and Inspections 4 2.0 U NPACKING AND I NSPECTIONS A high-quality installation begins on the receiving dock. The Liebert STS2 and its packaging should be inspected when the unit is delivered. If the packaging is not damaged, unpack the unit and conduct an internal inspection before beginnin...
Page 13 - Easily Moved —; Ensure that the forklift is clear of; Internal Inspections
Unpacking and Inspections 5 2.2.1 Handling Considerations The static switch is bolted to a wooden shipping pallet to allow handling by forklift equipment or a pallet jack. Easily Moved — The unit is furnished with integral castors that allow the unit to be rolled into place after it has reached its ...
Page 14 - Location Considerations; OCATION; Figures 5; Recommended Minimum Service Clearances; Storage Temperature Range:; Switch Size
Location Considerations 6 3.0 L OCATION C ONSIDERATIONS The Liebert STS2 should be placed in a clean, cool and dry location. The Liebert STS2 requires only front access for installation and maintenance. Back or side access is not required. Adequate space is required above the unit for conduit (if co...
Page 15 - Altitude; Figure 1; shows the maximum allowable ambient temperature for full load; Figure 2; Ra
Location Considerations 7 3.4 Altitude The standard units are designed for full load operation up to 4000 feet (1200m) above sea level. See Figure 1 for recommended deratings for altitudes greater than 4000 feet (1200m). Figure 1 Recommended derating for high altitude operation Operation at full loa...
Page 16 - Locating the Liebert STS2; OCATING; Leveling and Anchoring the Unit to the Floor; through; Leveling of the Static Switch Without Anchoring; through
Locating the Liebert STS2 8 4.0 L OCATING THE L IEBERT STS2 This section provides instructions for leveling the Liebert STS2 and anchoring the unit to the floor, should that be required.For leveling feet details, see Figures 5 through 10 . 4.1 Leveling and Anchoring the Unit to the Floor The Liebert...
Page 17 - Power and Control Wiring; OWER; Input And Output Power Connections; Installation—Optional
Power and Control Wiring 9 5.0 P OWER AND C ONTROL W IRING All power and control wiring should be installed by a qualified electrician. All power and control wiring must comply with the NEC and applicable local codes. Unless otherwise labeled, use the recommended tightening torque as shown in Table ...
Page 18 - Figure 3; Input Junction Box Installation—Optional; See; Table 2; Rating
Power and Control Wiring 10 Figure 3 Typical static transfer switch one-line diagram The input and output power wire size should be based on the upstream overcurrent protection device, observing the NEC and local codes.The molded case switches contained in the Liebert STS2 are typically non-automati...
Page 19 - Table 3
Power and Control Wiring 11 For preparation purposes, the following tables provide the dimensions and wire sizes for the input junction boxes. Table 3 Input junction box dimensions Switch Rating Length Inches (mm) Width Inches (mm) Height Inches (mm) 100 amp 16 (406) 14 (356) 6 (152) 250 to 600 amp ...
Page 20 - System Grounding; Equipment grounding —; based on the upstream overcurrent protection device.; on page 12 or as is typical with a double-; Figure 4; Control Wiring Connections; on page 14 for details; hazard and is not recommended.
Power and Control Wiring 12 5.3 System Grounding Equipment grounding — Grounding is primarily for equipment and personnel safety, although proper grounding also enhances equipment performance. All input and output power feeds must include an equipment grounding means as required by the NEC and local...
Page 21 - Remote Source Selection Wiring; not; Table 6
Power and Control Wiring 13 5.5 Remote Source Selection Wiring An optional Remote Source Selection board may be installed in your Liebert STS2. This board is installed in the same bay as the communications options. See Figures 21 and 22 for the location of these options. See Figure 23 for informatio...
Page 22 - Options; PTIONS; Programmable Relay Board; Configuring the Programmable Relay Board Settings on page 97; Optimized Transfer; Table 7; Channel
Options 14 6.0 O PTIONS This section discusses the options available for the Liebert STS2. The communications options are also discussed in 12.0 - Communication Interfaces . 6.1 Programmable Relay Board The Programmable Relay Board (PRB) provides a means to trigger an external device when an event o...
Page 23 - Distribution Cabinet With I-Line Panelboard—100-600A Units Only; Configuring the Input Contact Isolator; Comms Board; Comm
Options 15 6.3 Distribution Cabinet With I-Line Panelboard—100-600A Units Only A distribution cabinet with a Square D I-Line panelboard offers space to plug in up to 10 three-pole branch circuit breakers (100A-250A). The panelboard is rated at 600A with an overall short-circuit rating of 100,000 AIC...
Page 24 - LED Display; Figures 8; Redundant Output Breaker
Options 16 6.7 LED Display A light-emitting diode display is available to replace the standard liquid crystal display touch screen control. The display provides monitoring and control throuh a series of LEDs and buttons. LEDs alert you when a problem occurs. A PC running terminal emulation software ...
Page 25 - Input Junction Boxes and Cables; - Input Junction Box Installation—Optional; Seismic Floor Anchors; - Leveling and Anchoring the Unit to the Floor; Seismic Floor Stand
Options 17 6.12 Input Junction Boxes and Cables Two input power junction boxes and interconnecting cables provide under floor connection for the two input power feeds. Power terminal blocks are provided in each junction box for the connection of the input power conductors and a parity-sized ground c...
Page 26 - Installation Drawings; NSTALLATION; Figure 5
Installation Drawings 18 7.0 I NSTALLATION D RAWINGS Figure 5 Outline drawing: 100 – 250 amp Liebert STS2 PS211100Rev. 03 Notes: 1. All dimensions are in inches and (millimeters). 2. 18" (457mm) min. clearance above unit required for air exhaust. 3. Clearance of 36" (914mm) minimum is requir...
Page 27 - Figure 6; Rev
Installation Drawings 19 Figure 6 Outline drawing: 400 – 600 amp Liebert STS2 PS21 1400 Rev . 02
Page 28 - Figure 7
Installation Drawings 20 Figure 7 Outline drawing: 800 – 1000 amp Liebert STS2 PS21 1800 Rev . 02
Page 29 - Figure 8
Installation Drawings 21 Figure 8 Outline drawing: 100 – 250amp Liebert STS2 with a key lockout switch option PS211101Rev. 02 Notes: 1. All dimensions are in inches and (millimeters). 2. 18" (457mm) min. clearance above unit required for air exhaust. 3. Clearance of 36" (914mm) minimum is re...
Page 30 - Figure 9
Installation Drawings 22 Figure 9 Outline drawing: 400 – 600 amp Liebert STS2 with a key lockout switch option PS21 1401 Rev . 02
Page 32 - SYSTEM SEISMIC ANCHORING, FIGURE 1; TOP VIEW; FRONT
Installation Drawings 24 Figure 11 Seismic anchor drawing: 100 – 250 amp Liebert STS2 PS211105 Rev. 0 5. MOVE CABINET INTO POSITION WITH REAR TABS INTO SLOTS OF FLOOR BRACKET. TABS TO EXTEND AT LEAST 1/2" THROUGH FLOOR BRACKET (FIG. 2). THEN ATTACH FRONT FLOOR BRACKETS TO FRONT CABINET BASE BRAC...
Page 34 - SYSTEM SEISMIC ANCHORING,
Installation Drawings 26 Figure 13 Seismic anchor drawing: 800 – 1000 amp Liebert STS2 5. MOVE CABINET INTO P OSITION W ITH REAR TABS INTO S LOTS OF FLOOR BRACKET. TABS TO EXTEND AT LEAST 1/2" THROUGH FLOOR BRACKET (FIG. 2). THEN ATTACH FRONT FLOOR BRACKETS TO FRONT CABINET BASE BRACKET BUT DO N...
Page 35 - FRONT VIEW
Installation Drawings 27 Figure 14 Electrical field connections drawing: 100 – 250 amp Liebert STS2 with single output breaker PS212100 Rev. 3 FRONT VIEW 1. ALL DIMENSIONS ARE IN INCHES AND (MILLIMETERS). NOTES: (WITH FRONT PANELS REMOVED) SECTION A-A NEUTRAL BUS SOURCE 1 INPUT Ø B SOURCE 1 INPUT Ø ...
Page 41 - Figure 20 Liebert STS2 non-automatic circuit breaker schedule
Installation Drawings 33 Figure 20 Liebert STS2 non-automatic circuit breaker schedule Liebert STS2 Ampere Rating, A Vendor Type Ampacity, A Voltage Withstand Current 100 ABB T4L 250 200-240V 380-480V 600V 125K 100K 50K 250 ABB T4L 250 200-240V 380-480V 600V 125K 100K 50K 400 ABB T5L 400 200-240V 38...
Page 42 - CONTROL WIRING
Installation Drawings 34 Figure 21 Control connection location diagram: 100 – 600 amp Liebert STS2 NOTES : 1. TYPICAL OPTIONS ARE SHOWN. FRONT VIEW WITH FRONT D OOR R EMOVED CONTROL WIRING INPUT CONTACT ISOLATOR BOARD PROGRAMMABLE RELAY SEE OPTION OPTION LOCATION DETAIL LOCATION DETAIL BOARD (OPTION...
Page 44 - Figure 23 Control wiring for remote source selection option; See Note 1; GND; Remote Source Selection; Source 1
Installation Drawings 36 Figure 23 Control wiring for remote source selection option 1 2 3 4 6 5 See Note 1 S2 S1 GND GND Remote Source Selection PS213007Rev. 02 NOTES1. Customer-provided normally open dry contacts . Rating 10mA at 30VDC.2. Maximum cable length 500 ft. (152m) with #16 AWG, 300V mini...
Page 45 - Figure 24 Control wiring for the programmable relay board option; PROGRAMMABLE RELAY BOARD; TABLE; CHANNEL
Installation Drawings 37 Figure 24 Control wiring for the programmable relay board option PS213001 Rev. 2 PROGRAMMABLE RELAY BOARD 8. ALL WIRING MUST BE IN ACCORDANCE WITH NATIONAL (C=COMMON, NC=NORMALLY CLOSED, NO=NORMALLY OPENED) #16AWG FLEXIBLE STRANDED CABLE. 7. MAXIMUM CABLE LENGTH 500 FT. (152...
Page 46 - “NO CUSTOMER CONNECTION”; INPUT CONTACT ISOLATOR BOARD
Installation Drawings 38 Figure 25 Control wiring for the input contact isolator board option 2 1 5 3 4 6 7 14 11 9 8 10 12 13 15 16 “NO CUSTOMER CONNECTION” INPUT CONTACT ISOLATOR BOARD 02-810012-XX J51 PS213002Rev. 03 NOTES:1. Customer control wiring connection points are Terminals 1 through 16 (s...
Page 47 - Figure 26 Control wiring for comms board; COMMS BOARD
Installation Drawings 39 Figure 26 Control wiring for comms board EXTERNAL MODEM SEE DETAIL A “NO CUSTOMER CONNECTION” PS213003Rev. 02 LIEBERT SITESCAN SEE DETAIL B “NO CUSTOMER CONNECTION” J81 J1A COMMS BOARD 02-810015-XX TB 55 TB56 TB 51 SEE NOTE 2 CUSTOMER-SUPPLIED INTERCONNECTING CABLE TO EXTERN...
Page 48 - TB
Installation Drawings 40 Figure 27 Control wiring for the Liebert IntelliSlot SNMP/Web/Modbus 485 card + - 1 23 TB 3 Notes: 1. Wire size and type: 10/100 base-T ethernet cable with RJ-45 plug connector . The length is limited by internet standards. 2. Maximum cable length 1000 feet (300 meters) with...
Page 49 - Figure 28 Control wiring for the RS-232 port; See Detail A; Front View; Upper Half of Unit; DB9 Connector; Connector accessible with front
Installation Drawings 41 Figure 28 Control wiring for the RS-232 port LCD DISPLAY See Detail A Front View Upper Half of Unit With Door Open PS213006Rev. 01 6 7 8 9 1 2 3 4 5 TXD RXD GND DB9 Connector Detail A NOTES1. RS-232 communication through DB9 connector . 2. Connector accessible with front doo...
Page 50 - Figure 29 Outline drawing for input junction box; INPUT JUNCTION BOX
Installation Drawings 42 Figure 29 Outline drawing for input junction box G C B A B D E H GDiameter hole A C INPUT JUNCTION BOX Location of Factory-Supplied Input Power Cable Assembly Recommended Location for Customer Connection of Input Power Raceway (by others) 3-Phase, 3-Wire Plus Ground Power Te...
Page 51 - Figure 30 Color LCD touch screen display
Installation Drawings 43 Figure 30 Color LCD touch screen display PR E F E R R E D AL T E R N A TE RE S E T SI L E N C E SI S C R S H O R T S 2 SC R SH O R T S 1 SC R O P EN S 2 SC R O P EN HE A TS IN K O V E R TE M P EQ U IPM E N T O V ER TE M P AM B IEN T O V E R TE M P S O U RCE 2 SO U R C E 1 0 ...
Page 52 - Figure 31 LED display; Symbol
Installation Drawings 44 Figure 31 LED display 4 3 3A (B) 2 (D) (F) 5 (J) (H) (E) 1 (C) 1 (A) (K) (M) ! (N) PS211002Rev. 0 2 (L) (G) Symbol LED Description A Green Source 1 Power is Present B Green Source 2 Power is Present C Green Source 1 Within Tolerance D Green Source 2 Within Tolerance E Green ...
Page 53 - Figure 32 Installation drawing, seismic floor stand 100-250A
Installation Drawings 45 Figure 32 Installation drawing, seismic floor stand 100-250A INSTALLATION DRAWING FOR SEISMIC FLOOR STAND 100-250A STS2 INSTALLATION NOTES: 1. CHECK ALL HARDWARE FOR PROPER TORQUE PRIOR TO INSTALLATION. 2. INSTALL REAR LOWER STS2 BRACKET TO THE FLOOR STAND USING EXISTING HOL...
Page 54 - Figure 33 Installation drawing, seismic floor stand 100-250A
Installation Drawings 46 Figure 33 Installation drawing, seismic floor stand 100-250A FRONT FRONT REAR REAR FRONT LEVELER FOOT DETAIL C (3 PLACES) CAP SCREW M12-1.75 x40mm SPLIT LOCK WASHER M12 FLAT WASHER M12 REAR LOWER STS2 BRACKET REAR FIG. 3 TOP VIEW OF FLOOR STAND WITH LOWER REAR MOUNTING BRACK...
Page 55 - Figure 34 Installation drawing, seismic floor stand 100-250A; DETAIL A
Installation Drawings 47 Figure 34 Installation drawing, seismic floor stand 100-250A A 2 P LA CES DETAIL A REAR UPPER STS2 BRACKET REAR LOWER STS2 BRACKET UPPER REAR BRACKET TABS TO SLIDE INTO LOWER REAR BRACKET SLOTS (2 PLACES) CAP SCREW M10-1.5X30MM SPLIT LOCK WASHER M10 FLAT WASHER M10 (2 PLACES...
Page 56 - Figure 35 Installation drawing, seismic floor stand 100-250A
Installation Drawings 48 Figure 35 Installation drawing, seismic floor stand 100-250A NOTE: SEE DWGS PS215000, PS215001, AND PS215002 FOR DETAILS. 30.0" 77.0" 32.1" RAISED FLOOR FRONT VIEW RIGHT SIDE VIEW ISOMETRIC VIEW PS215003 Rev . 0
Page 57 - Figure 36 Installation drawing, seismic floor stand 400-600A
Installation Drawings 49 Figure 36 Installation drawing, seismic floor stand 400-600A A BOTTOM VIEW FRONT VIEW SEE HEIGHT TABLE B INSTALLATION NOTES: 1. CHECK ALL HARDWARE FOR PROPER TORQUE PRIOR TO INSTALLATION. 2. INSTALL REAR LOWER STS2 BRACKET TO THE FLOOR STAND USING EXISTING HOLES WITH BENT FL...
Page 58 - Figure 37 Installation drawing, seismic floor stand 400-600A
Installation Drawings 50 Figure 37 Installation drawing, seismic floor stand 400-600A FRONT FRONT REAR REAR FRONT LEVELER FOOT DETAIL C (3 PLACES) CAP SCREW M12-1.75 x40mm SPLIT LOCK WASHER M12 FLAT WASHER M12 REAR LOWER STS2 BRACKET REAR FIG. 3 TOP VIEW OF FLOOR STAND WITH LOWER REAR MOUNTING BRACK...
Page 59 - Figure 38 Installation drawing, seismic floor stand 400-600A
Installation Drawings 51 Figure 38 Installation drawing, seismic floor stand 400-600A A 2 P LA CES DETAIL A REAR UPPER STS2 BRACKET REAR LOWER STS2 BRACKET UPPER REAR BRACKET TABS TO SLIDE INTO LOWER REAR BRACKET SLOTS (2 PLACES) CAP SCREW M10-1.5X30MM SPLIT LOCK WASHER M10 FLAT WASHER M10 (2 PLACES...
Page 60 - Figure 39 Installation drawing, seismic floor stand 400-600A
Installation Drawings 52 Figure 39 Installation drawing, seismic floor stand 400-600A NOTE: SEE DWGS PS216000, PS216001, AND PS216002 FOR DETAILS. 38" 77.0" 32.1" RAISED FLOOR FRONT VIEW RIGHT SIDE VIEW ISOMETRIC VIEW PS216003 Rev . 0
Page 61 - Figure 40 Installation drawing, seismic floor stand 800-1000A; HARDWARE TORQUE
Installation Drawings 53 Figure 40 Installation drawing, seismic floor stand 800-1000A A B TOP VIEW FRONT VIEW BOTTOM VIEW ISOMETRIC VIEW 36.9" 83.9" SEE HEIGHT TABLE 29.44" TYP. 2.47" TYP. 71.55" TYP. 2.47" TYP MOUNTING PLATE ALIGN FOOT PARALLEL TO MOUNTING PLATE AS SHOWN FO...
Page 62 - Figure 41 Installation drawing, seismic floor stand 800-1000A
Installation Drawings 54 Figure 41 Installation drawing, seismic floor stand 800-1000A FRONT FRONT REAR REAR FRONT LEVELER FOOT DETAIL C (3 PLACES) CAP SCREW M12-1.75 x40mm SPLIT LOCK WASHER M12 FLAT WASHER M12 REAR LOWER STS2 BRACKET REAR FIG. 3 TOP VIEW OF FLOOR STAND WITH LOWER REAR MOUNTING BRAC...
Page 63 - Figure 42 Installation drawing, seismic floor stand 800-1000A; PLACES
Installation Drawings 55 Figure 42 Installation drawing, seismic floor stand 800-1000A RIGHT REAR UPPER STS2 BRACKET RIGHT REAR LOWER STS2 BRACKET UPPER REAR BRACKET TABS TO SLIDE INTO LOWER REAR BRACKET SLOTS (2 PLACES) CAP SCREW M10-1.5X30MM SPLIT LOCK WASHER M10 FLAT WASHER M10 (2 PLACES) CAP SCR...
Page 64 - Figure 43 Installation drawing, seismic floor stand 800-1000A
Installation Drawings 56 Figure 43 Installation drawing, seismic floor stand 800-1000A NOTE: SEE DWGS PS217000, PS217001, AND PS217002 FOR DETAILS. 84" 77.0" 32.1" RAISED FLOOR FRONT VIEW RIGHT SIDE VIEW ISOMETRIC VIEW 32" 52" PS217003 Rev . 0
Page 65 - Introduction to Liebert STS2 Operations; NTRODUCTION; PERATIONS; System Description; Preferred
Introduction to Liebert STS2 Operations 57 8.0 I NTRODUCTION TO L IEBERT STS2 O PERATIONS 8.1 System Description A Liebert STS2 provides an automatic, seamless transfer between input power sources to an output load. The Liebert STS2 monitors the input sources, to ensure each source is operating with...
Page 66 - Reliability and Agency Requirements; applicable, to meet agency requirements as follows:; Factory Backup and Service Assistance; Modes of Operation; required
Introduction to Liebert STS2 Operations 58 8.1.2 Reliability and Agency Requirements The Liebert STS2 is designed for high reliability and high availability with a critical bus Mean Time Between Failure (MTBF) exceeding 1,000,000 hours. The Liebert STS2, Control/Power Module and all its options are ...
Page 67 - Operator Controls; below and; Figure 44 Liebert STS2 touch screen display; remotely select a preferred source. See
Introduction to Liebert STS2 Operations 59 8.2.4 Bypass The static transfer switch can be manually bypassed to allow the power from a source to directly flow to the output load. This bypass allows the unit’s electronics to be serviced without dangerous voltages being present.The Liebert STS2 include...
Page 68 - Theory of Operation; HEORY; General Description; Liebert STS2 Static Transfer Switch; Automatic Retransfer Inhibited; Source Set Points on page 90
Theory of Operation 60 9.0 T HEORY OF O PERATION 9.1 General Description The Liebert STS2 contains all the equipment necessary to prevent an interruption in power flow to the AC load, should your primary source fail. 9.1.1 Liebert STS2 Static Transfer Switch The Liebert STS2 is a 3-pole, double-thro...
Page 69 - Retransfer Enabled/Disabled or Retransfer Delay user settings.; Source Set Points; repaired and reset to restore normal operation.
Theory of Operation 61 This alarm also is cleared if the unit transfers to the preferred source due to an alternate source AC volt failure (i.e., an emergency transfer.) 9.1.4 Emergency Transfer To ensure that power remains connected to the load, the Liebert STS2 automatically performs an emergency ...
Page 70 - Detailed Component Description; Operator Interface; Communication Interfaces; Firmware; Alarm and Faults; inactive
Theory of Operation 62 9.2 Detailed Component Description 9.2.1 Controls Operator Interface The Liebert STS2 Color Graphical Display unit contains a touch screen color LCD to provide the operator interface to control and configure the operation of the unit and quickly diagnose problems. A password a...
Page 72 - Operating Instructions for the Touch Screen Interface; arrange for equipment inspection and startup.; - Operating the Liebert STS2 LED Display
Operating Instructions for the Touch Screen Interface 64 10.0 O PERATING I NSTRUCTIONS FOR THE T OUCH S CREEN I NTERFACE After the initial equipment startup, the following operating guidelines can be used for standard equipment operation. These guidelines should be reviewed for any special equipment...
Page 73 - Normal System Startup; Figure 45 Liebert STS2 touch screen display; to
Operating Instructions for the Touch Screen Interface 65 10.1 Normal System Startup 1. Ensure that all Liebert STS2 breakers—CB1, CB2, CB3, CB3A (if supplied), CB4, and CB5—are in the OFF position.a. Ensure that the key interlocks for CB1 and CB2 have their bolts retracted. b. Ensure that the key in...
Page 74 - Manual Transfer / Preferred Source Selection; and frequency are displayed on the Mimic. See; User Settings on page 89; for instructions on this procedure.; Figure 46 Source transfer screen; and the load would not receive power. See
Operating Instructions for the Touch Screen Interface 66 10.2 Manual Transfer / Preferred Source Selection The Source Transfer option (Source Xfers) in the touch screen menu allows you to select a preferred source. Transfers are only permitted when the voltage and current are within their proper ope...
Page 75 - To manually select the preferred source; through the touch screen.; Enabling Remote Source Selection; on page 76 for instructions on using the that interface.; Maintenance Bypass; on the Mimic screen.; thereby initiating a transfer remotely.
Operating Instructions for the Touch Screen Interface 67 To manually select the preferred source : 1. Verify that the input breakers CB1 and CB2 are closed.2. Select SOURCE XFERS from the menu bar. The Select Preferred Source screen is displayed in the Event Display. 3. Check the Mimic to verify tha...
Page 76 - Figure 47 Gate board viewing slot locations
Operating Instructions for the Touch Screen Interface 68 Figure 47 Gate board viewing slot locations If the Color Graphical Display is not available, you can still use the following bypass procedures, ignore the steps to check the display and check the LEDs.If your system contains the LED display, s...
Page 77 - To bypass the switch for Source 1:; Verify that Source 1 is supplying power via the Mimic.; To return to normal mode:; slots in the control panel. See; transfer to Source 1. See
Operating Instructions for the Touch Screen Interface 69 10.4.1 Bypass Procedures for Source 1 To bypass the switch for Source 1: 1. Verify that Source 1 is supplying power via the Mimic. • If the Color Graphical Display is not available, check the gate driver board LEDs through the slots in the con...
Page 78 - To bypass the switch for Source 2:; Verify that Source 2 is supplying power via the Mimic.; Normal System Shutdown; Shutdown in Static Transfer Switch Mode; transfer to Source 2. See
Operating Instructions for the Touch Screen Interface 70 10.4.2 Bypass Procedures for Source 2 To bypass the switch for Source 2: 1. Verify that Source 2 is supplying power via the Mimic. • If the Color Graphical Display is not available, check the gate driver board LEDs through the slots in the con...
Page 79 - LARM
Alarm and Faults 71 11.0 A LARM AND F AULTS Alarms and faults are events that are triggered when the operation of the Liebert STS2 falls outside the defined parameters. These events can also be triggered by: user actions, such as changing configurations, clearing logs, etc.; failed components such a...
Page 80 - Event and History Logs; Table 9 - Terminal commands
Alarm and Faults 72 11.2 Event and History Logs The system tracks events through the Events Log and tracks significant events through the History Logs. These logs allow you to quickly spot trends or diagnose problems that the unit may have had. Both logs are written in nonvolatile memory.The logs ca...
Page 81 - List of Messages
Alarm and Faults 73 The History Log has the following fields: • Replay Rate — indicates how long it takes for the replay to play. Use the UP and DOWN buttons to set the time. • Status — the status of the Liebert STS2 at the point of the current frame in the replay. The History log has three statuses...
Page 82 - Table 8; Alarm Message
Alarm and Faults 74 Table 8 Event messages ID Alarm Message Description/Cause Action 001 S1 SCR SHORT One or more of the SCRs for Source 1 have shorted and failed. D, F, A, E 002 S2 SCR SHORT One or more of the SCRs for Source 2 have shorted and failed. D, F, A, E 003 S1 SCR OPEN One or more of the ...
Page 83 - Configuring the Input Contact Isolator Settings on
Alarm and Faults 75 085 CB2 (S2) OPEN Source 2, Circuit Breaker 2 is open. A, E 086 CB4 (S1 BYP) CLOSED Source 1 on bypass, Circuit Breaker 4 is closed. A, E 087 CB5 (S2 BYP) CLOSED Source 2 on bypass, Circuit Breaker 5 is closed. A, E 088 CB3 (OUTPUT) OPEN Output circuit breaker (CB3) is open. A, E...
Page 84 - OMMUNICATION; Table 9
Communication Interfaces 76 12.0 C OMMUNICATION I NTERFACES The Liebert STS2 monitoring system offers several choices for communications.The RS-232 terminal port is standard on all units. The port is located inside the front door, to the left of the touch screen/LED front panel mounting as shown in ...
Page 85 - Connections; command; Keys
Communication Interfaces 77 12.1.1 Connecting and Using a Terminal An RS-232 connection can be used to connect the Liebert STS2 to either a terminal or a PC running terminal emulation software. If you are unsure of the cable pin out, see 15.2.10 - Terminal Port Connections . 1. Connect the terminal ...
Page 86 - Configuring the Liebert STS2 via the Terminal
Communication Interfaces 78 12.1.2 Configuring the Liebert STS2 via the Terminal The SPT command is used to configure the systems setpoints. The SVT syntax for the setpoints consists for four parameters: SPT [ group ] [ item ] [ value ] where the parameters are: • SPT — is the terminal command that ...
Page 87 - Value Parameter; Item settings, depending on what they are, use various value types.; Value types; hexadecimal binary word; Group settings and values
Communication Interfaces 79 Value Parameter Item settings, depending on what they are, use various value types. Table 10 provides a list of the possible value types and their description. Table 11 shows the various groups, the settings contained within, and the type of value it requires. Table 10 Va...
Page 89 - Setting Bitpacked Options with the Terminal; Five sets of options and features; Comms Options 1
Communication Interfaces 81 12.1.3 Setting Bitpacked Options with the Terminal Five sets of options and features settings are available through the terminal to control the system operation.Under System Settings for the SPT command, these items denote which options are INSTALLED: • 6 — Options_1• 14 ...
Page 90 - Critical Option Enabling; grouped in four sets of four bits each, as such:; Binary-hexadecimal conversions
Communication Interfaces 82 Critical Option Enabling bit0—EnableManual_IPeakResetbit1—EnableAutoRestart bit2 through bit15 - not used (set to 0) Non-Critical Option Enabling bit0 — EnableAutoReXferbit1 through bit15 — not used (set to 0) The bits are set in reverse order, from bit 15 on the left to ...
Page 91 - Putting the Terminal Command Together; , bits 7 and 0 each must be set to 1 to indicate
Communication Interfaces 83 Putting the Terminal Command Together For example, a unit only has the Remote Source Selection and Dual-Output Breaker options installed. Checking the bits list under Options_1 on page 81 , bits 7 and 0 each must be set to 1 to indicate that these options are installed. T...
Page 92 - Setting Event Masks with the Terminal; Configuring the Liebert STS2 via the Terminal; on page 78 for more details about the; Examples of Event Mask Settings; To breakdown this syntax for the last example:
Communication Interfaces 84 12.1.4 Setting Event Masks with the Terminal The event masks can be customized via a terminal. The command SPT4?<ENTER> displays all faults and alarms, along with their associated event masks. A plus sign (+) means that particular event mask is enabled, while a minu...
Page 93 - Liebert STS2 Touch Screen Display; IEBERT; OUCH; Display Overview; The Liebert STS2; Mimic —; a graphical diagram of the status of the unit.; Event controls —; allow you to reset alarms and turn off audible alarms.; Event Display —; Mimic
Liebert STS2 Touch Screen Display 85 13.0 L IEBERT STS2 T OUCH S CREEN D ISPLAY The Liebert STS2 can be configured with a Color Graphical LCD touch screen that allows you to quickly check the status of the unit and identify problems.A touch screen LCD is available through the front of the Liebert ST...
Page 94 - settings to be customized.; Figure 49 Menus; ) to delete unwanted characters. This button functions like
Liebert STS2 Touch Screen Display 86 13.2 Menu Overview The touch screen menu provides access to configuration settings and more device information.The CONFIG (Configuration) and LOGS menus provide multiple choices through pop-up menus. The SOURCE XFER menu selection allows you to select the preferr...
Page 95 - Using the Optional Key Lockout Switch; Figure 51 Key lockout switch.; Using the Password; To set or reset the password:; A keyboard is displayed.
Liebert STS2 Touch Screen Display 87 13.2.1 Security Because the Liebert STS2 Color Graphical Display provides access to various configuration and monitoring choices, a password or key lockout switch may be used to protect access to certain changes, including: • Change configuration settings.• Clear...
Page 96 - Configuration Menu; System Ratings; Event Mask
Liebert STS2 Touch Screen Display 88 13.3 Mimic Display The Mimic display provides a color diagram of the operation of the Liebert STS2. This display imitates the power flow through the static transfer switch and indicates source status, breaker status, switch status, source voltage and current read...
Page 97 - To set the event masks:; Select the mask settings for each fault and alarm.; Figure 52 Event mask dialog box; qualified personnel via system security.; To access the User Settings dialog box:; . The top six buttons access a series of
Liebert STS2 Touch Screen Display 89 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 Event Mask dialog box is displayed. See Figure 52 . 2. Select the mask settings for each fault and alarm. a. Select YES to enable the setti...
Page 98 - Figure 53 User settings dialog box; Manual Transfer / Preferred Source Selection
Liebert STS2 Touch Screen Display 90 Figure 53 User settings dialog box Source Set Points The Source 1/2 Set Points allows you to configure trigger points for each input source (1 or 2) for the Liebert STS2 via a keypad dialog or HI/LO dialog box. The source numbers do not designate the source as th...
Page 99 - To configure the setpoints for each source:; Button
Liebert STS2 Touch Screen Display 91 To configure the setpoints for each source: 1. Select SOURCE 1/2 Set Points from the User Settings dialog box. The Source 1/2 Set Points dialog is displayed. Figure 54 Source setpoints 2. Select 1 to configure the settings for Source 1. 3. Configure the settings ...
Page 101 - • Comm Options (see Section; To access the System Settings menu:; • Select COMM OPTIONS from the System Settings Menu. (If needed, see; Settings; The Comm Options dialog box is displayed. See; Figure 55 Comm options dialog box; Option
Liebert STS2 Touch Screen Display 93 13.7.4 System Settings The System Settings choice under the Config menu displays another pop-up menu with three choices: • Comm Options (see Section 13.8 ) • System Options (see Section 13.9 ) • System ID (see Section 13.10 ) To access the System Settings menu: 1...
Page 102 - To configure the modem:
Liebert STS2 Touch Screen Display 94 13.8.1 Configuring the Modem The Modem dialog box allows you to configure the optional external modem that is connected to the Liebert STS2.The dialog box contains a series of choices that access either a keypad or a secondary dialog to configure settings. Auto d...
Page 103 - Select INIT. STRING to configure the initialization string.
Liebert STS2 Touch Screen Display 95 9. Select INIT. STRING to configure the initialization string. This string configures the parameters of the modem. • Check your modem’s documentation for this setting. 10. Select BAUD RATE to display a dialog with the baud rate choices: • For an external modem, s...
Page 104 - Configuring the Input Contact Isolator Settings; event is triggered. See; Select INPUT CONTACT ISOLATOR from the Comm Options menu.; Figure 57 Input contact isolator dialog box
Liebert STS2 Touch Screen Display 96 13.8.3 Configuring the Input Contact Isolator Settings The Input Contact Isolator (ICI) is an optional, eight-channel input board for up to eight external user alarm or message inputs to be routed to the Liebert STS2’s alarm network. If the Transfer Inhibit optio...
Page 105 - Input Contact Isolator Settings Record on page 142; Configuring the Programmable Relay Board Settings; summary; Standard settings for programmable relays; Relay
Liebert STS2 Touch Screen Display 97 A keyboard is displayed to allow you to enter the name of the alarm. 3. Enter the name of the alarm set for that input. For example, a fan problem could be indicated by naming the button FAN. 4. Select OK on the keyboard to keep your label.5. Select DELAY. A keyp...
Page 106 - Figure 58 Programmable relay board dialog box
Liebert STS2 Touch Screen Display 98 To configure your programmable relay boards for user defined settings: 1. Select PROG. RELAY BOARD # x from the Comm Options dialog box, where x is the corresponding board number.The Prog. Relay Board dialog box is displayed. Figure 58 Programmable relay board di...
Page 107 - Configuration; Board; for more information on this board.; If the Liebert STS2 will be connected to Liebert SiteScan:; Saving Your Communications Configurations; To save you communications configuration settings:; the settings that you want activated.; The System Options dialog box is displayed.; Figure 59 System options; Dual Output Breaker; display PDU specific metering and alarm information.
Liebert STS2 Touch Screen Display 99 13.8.6 Liebert SiteScan ® Configuration An optional RS-422 port, contained in the Comms Board, can be installed in the Liebert STS2 to provide communications with Liebert SiteScan. Liebert SiteScan is system monitoring software that allows you to utilize a PC to ...
Page 108 - -Pole Transfer Switch; If the Liebert STS2 is connected to a PDU configured as a Wye:; If the system is utilizing Remote Source Selection:
Liebert STS2 Touch Screen Display 100 4-Pole Transfer Switch This option is not available (factory-set to No ). Shunt This selection is set at the factory. Wye Output Transformer The Wye Output Transformer controls the firing of the SCRs on startup, which minimizes the inrush into PDU transformers. ...
Page 109 - Figure 60 Event log
Liebert STS2 Touch Screen Display 101 13.11 Logs Two types of logs are kept by the Liebert STS2: Event Log and History Log. 13.11.1Event Log The Event Log tracks the alarms and faults of the Liebert STS2.See 11.0 - Alarm and Faults for more information on these events and see 11.2.1 - Event Log for ...
Page 110 - To use the History Log:; Cleaning the LCD Touch Screen; required on such equipped units to clear these logs.
Liebert STS2 Touch Screen Display 102 To use the History Log: 1. Select LOGS from the menu bar to open the Logs menu.2. Select either HISTORY LOG 1 or HISTORY LOG 2 from the menu.3. Select the appropriate buttons to replay the log: • Select PREV to go to the previous frame in the sequence.• Select N...
Page 111 - Operating the Liebert STS2 LED Display; PERATING; ISPLAY; desired. Instructions for using the LCD are in; LEDs and Buttons and Key Lockout Switch; switch, plus tables providing definitions of these components.; Figure 62 LED display
Operating the Liebert STS2 LED Display 103 14.0 O PERATING THE L IEBERT STS2 LED D ISPLAY Certain models of the Liebert STS2 do not include the LCD Color Graphical Display with the touch screen interface. This display is replaced by an LED front panel to allow you to monitor the unit and alert you w...
Page 112 - LED and push button description
Operating the Liebert STS2 LED Display 104 14.1.2 LED and Push Button Description The following table defines the LEDs and push buttons in the LED display: Table 15 LED and push button description Symbol LED Description Action A Green Source 1 power is present A green LED is lit if the Source 1 inpu...
Page 113 - off the horn and reset the alarm.; Figure 63 Key lockout switch.; Changes disabled
Operating the Liebert STS2 LED Display 105 14.1.3 Event Controls When an alarm is triggered, a red LED is lit in the control panel. A pair of buttons allows you to turn off the horn and reset the alarm. 14.1.4 Key Lockout Switch An optional key lockout switch for the Liebert STS2 enables or disables...
Page 114 - - Operating Instructions for the Touch Screen; Refer to
Operating the Liebert STS2 LED Display 106 14.2 Operations This section discusses the system startup, shutdown and bypass procedures for the LED-based Liebert STS2. If your unit has an LCD touch screen, see 10.0 - Operating Instructions for the Touch Screen Interface for instructions these procedure...
Page 115 - If the Transfer Inhibit LED is lit:
Operating the Liebert STS2 LED Display 107 14.2.2 Manual Transfer / Preferred Source Selection The preferred source buttons allow you to change the preferred source. Transfers are only permitted when the voltage and current are within their proper operating range and the sources are synchronized. Tr...
Page 116 - Bypass Procedures for Source 1
Operating the Liebert STS2 LED Display 108 14.2.3 Maintenance Bypass The Liebert STS2 is equipped with two key-interlocked, bypass breakers, CB4 and CB5, to allow manual bypass of the switch electronics for either input source in the event of switch failure or for maintenance of the switch. Refer to...
Page 117 - Bypass Procedures for Source 2
Operating the Liebert STS2 LED Display 109 Bypass Procedures for Source 2 To bypass the switch for Source 2: 1. Verify that Source 2 is supplying power via the LED display. • If the LED Display is not available, check the gate driver board LEDs through the slots in the control panel. See Figure 47 ....
Page 118 - Shutdown in Static Transfer Switch Mode; The LEDs for CB1 and CB2 are turned off.; Shutdown in Maintenance Bypass Mode; When the Liebert STS2 is operating on bypass:
Operating the Liebert STS2 LED Display 110 14.2.4 Normal System Shutdown The Liebert STS2 can be shut down from either the static switch mode or the bypass mode. Shutdown in Static Transfer Switch Mode When the Liebert STS2 is operating in static transfer switch mode (not maintenance bypass mode): 1...
Page 119 - Specifications; PECIFICATIONS; This section provides the specifications for the Liebert STS2.; System Configuration; System current ratings; Current
Specifications 111 15.0 S PECIFICATIONS This section provides the specifications for the Liebert STS2. 15.1 System Configuration The Liebert STS2 can be set in several different configurations, according to the model and location. The configuration is set at the factory and does not need to be chang...
Page 120 - for instructions on configuring these settings.; Electrical requirements; Item; Unit short circuit withstand capability; Unit Voltage
Specifications 112 15.1.4 Grounding Refer to 5.3 - System Grounding for specifications and instructions regarding grounding. 15.1.5 Electrical Requirements 15.1.6 Input Surge Suppression The Liebert STS2 is equipped with transient voltage surge suppression on each input for maximum surge suppression...
Page 121 - System Components; the base. The frame is designed to accommodate floor stands.; Frame sizes; Rating Width Depth Height
Specifications 113 15.2 System Components All Liebert STS2 models provide two static transfer switches within one enclosure, with the ability to transfer between two input sources to a single output.All Liebert STS2s are configured with either an LCD Color Graphical Interface touch screen display or...
Page 122 - the Liebert STS2 logic. See; Figure 20 - Liebert STS2 non-automatic circuit breaker schedule; Color Graphical Display or LED Display; for a drawing of the touch screen display. See
Specifications 114 15.2.4 Access The Liebert STS2 is designed so all repairs and maintenance can be done from the front or top of the unit. All components that may need repair or replacement during routine field maintenance are safely accessed with the units in bypass without removing power from the...
Page 123 - for the; MTA plug pinout; DB9 pinout; Pin
Specifications 115 15.2.9 RS-232 Port The unit is equipped with an RS-232 port for connecting a terminal or PC. See Figure 28 for the port’s location. See 12.1 - Using the RS-232 Port for instructions on using a PC terminal with the unit. 15.2.10 Terminal Port Connections The system has an asynchron...
Page 124 - Parameter Setting
Specifications 116 15.2.11 RS-232 Interface Parameters The service terminal interface parameters are the following settings and cannot be changed. 15.2.12 Maintenance Bypass The Liebert STS2 is configured to allow the unit’s electronics to be bypassed to either input source for maintenance without i...
Page 125 - Event Message Help Text; VENT; BOLD; Liebert Services; SH
Event Message Help Text 117 16.0 E VENT M ESSAGE H ELP T EXT Key: ALL CAPS = event message displayed in the Event Display panel in the lower left corner of the LCD display. Indented text = help text shown in the Display Panel in the lower right corner of LCD display. BOLD = commands that are sent th...
Page 146 - Maintenance; AINTENANCE; Proper Tightening of Nuts and Bolts; • For a Color Graphical Display unit, see; Selection; on; Changing the Air Filter; before working inside unit.; Torque tightening; Bolt Shaft
Maintenance 138 17.0 M AINTENANCE Minimal periodic maintenance of the Liebert STS2 is required. As with all electrical distribution components, the system should be regularly inspected for electrical connection integrity, signs of excessive temperatures, dirt accumulation, and proper system operatio...
Page 147 - UPPORT
Maintenance 139 S UPPORT I NFORMATION To contact Emerson Network Power Liebert Services for information or repair service in the United States, call 1-800-LIEBERT (1-800-543-2378). Liebert Services is available to assure fast repair of your unit with minimal downtime. Liebert Services offers a compl...
Page 148 - ROGRAMMABLE; for more information on the PRB.
Maintenance 140 P ROGRAMMABLE R ELAY B OARD S ETTINGS R ECORD The optional Programmable Relay Board (PRB) has eight channels to report events to an external device. Up to ten (10) events can be programmed to each channel. See 6.1 - Programmable Relay Board for more information on the PRB. If your Li...
Page 150 - NPUT; for more information on the ICI.
Maintenance 142 I NPUT C ONTACT I SOLATOR S ETTINGS R ECORD The Input Contact Isolator board (ICI) provides an Liebert STS2 module interface for up to eight external user alarm or message inputs to be routed through the Liebert STS2’s alarm network. See 6.4 - Input Contact Isolator Board for more in...
Page 152 - by helping customers optimize their data center; Business-Critical Continuity
Ensuring The High AvailabilityOf Mission-Critical Data And Applications. Emerson Network Power, a business of Emerson (NYSE:EMR),is the global leader in enabling Business-Critical Continuity ™ from grid to chip for telecommunication networks, data centers,health care and industrial facilities. Emers...
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