Liebert 100-1000A manual

AC P ow er For Business-Criti cal C on tinuity™ Li eber t ® STS2 ™ Us er Man ual–100-1000A, 50/60Hz[...]

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i T ABLE OF CONTENTS I MPORT ANT S AFETY I NSTRUCTION S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 O VERVIEW OF M ANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.0 S AFETY P RE CAUTIONS . . . . . . . . . . . . . . . . .[...]

ii 7.0 I NST ALLATION D RAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.0 I NTRODUCTI ON TO L IEBERT STS2 O PER ATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 8.1 System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

iii 12.0 C OMMUNICATION I NTERFACES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 12.1 Using the RS-232 Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 12.1.1 Connecting and Using a Terminal . . . . . . . . . . . . . . . . . . . . . [...]

iv 14.0 O PERATING TH E L IEBERT STS2 LED D ISPLAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 14.1 LEDs and Buttons and Key Lockout Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 14.1.1 Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

v FIGURES Figure 1 Recommended derating fo r high altitude operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 2 Maximum ambient temperature for full load operatio n at higher altitudes . . . . . . . . . . . . . . . . . . 7 Figure 3 Typical static transfer switch on e-line diagram . . . . . . . . . . . . . .[...]

vi Figure 53 User settings dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Figure 54 Source setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Figure 55 Comm options dialog box .[...]

1 I MPORT A NT S AFETY I NSTRUCTIONS SAVE THESE INSTRUCTIONS This manual co ntains important ins tructions that shoul d be followe d during the ins tallation and maintenance of the Liebert STS2. ! WARNING The unit is supplied by more than one power source. The unit co ntains hazardous vol tages if any of the inpu t sources are ON, even wh en the un[...]

2 O VERVIEW OF M ANUAL The Liebert STS2 Instal lation, Opera tion and Maintenance Manu al is organized in a logical progression so that you can follow the procedures in the order provided to get your Liebert STS2 installed and run ning. Read the entire manual before proceeding w ith the unpacking and i nstallation of the Liebert STS2. The major sec[...]

Safety Precautions 3 1.0 S AFETY P RECAUTION S Read this manual thoroughly before working with the Liebert STS2. Be sure to review the warning under Important Safet y Instructions on page 1 . Refer to the Handling Considerations on page 5 before attempting to move the unit. Under typical operation an d with the doors closed, only normal safety prec[...]

Unpacking and Inspection s 4 2.0 U NP ACKING AND I NSPECTIONS A high-quality installation begins on the receiving d ock. The Liebert STS2 and its packag ing should be inspected when the unit is deli vered. If the packaging is not da maged, unpack the unit and conduct an internal inspect ion before beginning the installa tion process. This section d[...]

Unpacking and Inspection s 5 2.2.1 Handling Considerations The static switch is bolted to a wooden shipping pall et to allow handling by forklift equipmen t or a pallet jack. Easily Moved — The unit is furnished with i ntegral castors t hat allow the unit to be rolled in to place after it has reached its location and is removed from the pall et. [...]

Location Cons iderations 6 3.0 L OCATION C ONSIDERATIONS The Liebert STS2 should be placed in a clean, cool and dry location . The Liebert STS2 requires o nly front access for install ation and maintenance. Back or side access is not required. Adequate space is required above the unit for conduit (i f configured as such) and cooling air flow . This[...]

Location Cons iderations 7 3.4 Altitude The standard units are designed for full load operation up to 4000 feet (1200m) abov e sea level. See Figure 1 for recommended deratings for altitu des greater than 4000 feet (1200m). Figure 1 Recommended derat ing for high altitude operation Operation at f ull load at a higher altitude ca n be accommodated i[...]

Locating the Lieb ert STS2 8 4.0 L OCATING THE L IEBERT STS2 This section provides instru ctions for leveling th e 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 STS2 can be an chored to the concrete floor t[...]

Power and Con trol Wir ing 9 5.0 P OWER AND C ONTROL W IRING All power and control wiring should be installed by a qualif ied electrician. All power an d control wiring must comply with the NE C and applicable local codes. Unless otherwi se labeled, use the recommended tightening torque as shown in Table 24 - Torque tightening. The busbars are acce[...]

Power and Con trol Wir ing 10 Figure 3 T ypical static tra nsfer switch one-line diagram The input and output po wer wire size should be ba sed on the upstream overcu rrent protection device, observing the NEC and local codes. The molded case switches containe d in the Liebert STS2 are typicall y non-automatic circuit breakers that rely on the upst[...]

Power and Con trol Wir ing 11 For preparation purposes, the following tables prov ide the dimensions and wi re siz es for the input junction boxes. T able 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 30 (762) 16 (406) 6 (152) T able 4 Input jun[...]

Power and Con trol Wir ing 12 5.3 System Grounding Equipment grounding — Grounding i s primarily for equ ipment and person nel safety, although proper g rounding also enhanc es equipment performance. All input and o utput power fe eds must include an equipment grounding m eans as required by the NEC and local codes. An insulated eq uipment ground[...]

Power and Con trol Wir ing 13 5.5 Remote Source Selection Wiring An optional Remote Source Select ion board may be installed in your Lieb ert STS2. This board is installed in the same bay as th e communications options. See Figures 21 and 22 for the location of these options. See Figure 23 for inform ation on the control w iri ng for the Remote Sou[...]

Options 14 6.0 O PTIONS This section discusses th e options available for the Liebert ST S2. 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 extern al device when an event occurs in the Liebert STS2. Each PRB has eight c[...]

Options 15 6.3 Distribution Cabinet With I-Li ne Panelboard—100-600A Unit s Only A distribution cabin et with a Square D I-Line panelbo ard offers space to plug in up to 10 three- pole branch circuit breakers (100A-250A). The panel board is rated at 600A with an overall short-circuit rating of 100,000 AIC. The full-height cabi net mounts on eithe[...]

Options 16 6.7 LED Display A light-emitting diod e display is available to replace the standard li quid crystal display touch screen control. The display provides moni toring and control throuh a series of LEDs and buttons. LEDs alert you when a problem occurs. A PC ru nning terminal emulation software connected to the RS-232 port is needed to acce[...]

Options 17 6.12 Input Junction Boxes and Cables Two input power junction boxes and interconnecting cables provide under floo r connection for the two input power feeds. Power terminal blocks are provid ed in each junction box for the connection of the input power conductors and a parity -sized grou nd conductor. The junction boxes are NEMA 1 enclos[...]

Installation Drawings 18 7.0 I NST ALLATION D RAWIN GS Figure 5 Outline drawing: 100 – 250 amp L iebert STS2 PS21 1 100 Rev . 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 required in the front for installation and se[...]

Installation Drawings 19 Figure 6 Outline drawing: 400 – 600 amp L iebert STS2 PS21 1400 Rev . 02[...]

Installation Drawings 20 Figure 7 Outline drawing: 800 – 1000 amp Liebert STS2 PS21 1800 Rev . 02[...]

Installation Drawings 21 Figure 8 Outline drawing: 100 – 250amp Lieber t STS2 with a key lockout switch option PS21 1 101 Rev . 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 required in the front for installation and [...]

Installation Drawings 22 Figure 9 Outlin e drawing: 400 – 600 amp Liebert STS2 with a key lo ckout switch op tion PS21 1401 Rev . 02[...]

Installation Drawings 23 Figure 10 Outline drawing: 800 – 1000 amp Liebert STS2 with the key lockout switch option PS21 1801 Rev . 02[...]

Installation Drawings 24 Figure 1 1 Seismic anchor drawing: 10 0 – 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 BRACKET BUT DO NOT FULLY TIGHTEN HARDWARE. 6. MAR[...]

Installation Drawings 25 Figure 12 Seismic anchor drawing: 40 0 – 600 amp Liebert STS2 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 BRACKET BUT DO NOT FULLY TIGHTEN HARDWARE. 6. MARK HOLE LOCATIONS [...]

Installation Drawings 26 Figure 13 Seismic anchor drawing: 80 0 – 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 OT FULLY T IGHTEN HARDWARE. 6. MARK HOLE LOCA[...]

Installation Drawings 27 Figure 14 Electrical field connect ions drawing: 100 – 250 amp Liebert ST S2 with single output break er 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 C CB4 SIDE VIEW ONE-LINE DIAGRAM K3 K2 CB3 [...]

Installation Drawings 28 Figure 15 Electrical field connect ions drawing: 100 – 250 amp Liebert ST S2 with dual output breakers PS212101 Rev . 04[...]

Installation Drawings 29 Figure 16 Electrical field connect ions drawing: 400 – 600 amp Liebert ST S2 with single output break er PS212400 Rev. 2 CB1 CB4 GROUND BUS FRONT VIEW RIGHT SIDE VIEW NEUTRAL BUS BUS GROUND PEM NUT RIGHT SIDE VIEW INPUT/OUTPUT BUS .51 DIA. NEUTRAL BUS CB3 CB5 CB2 (WITH FRONT PANELS REMOVED) FRONT VIEW SYSTEM OUTPUT Ø A, [...]

Installation Drawings 30 Figure 17 Electrical field connect ions drawing: 400 – 600 amp Liebert ST S2 with dual output breakers PS212401 Rev . 03[...]

Installation Drawings 31 Figure 18 Electrical field connect ions drawing: 8 00 – 1000 amp Liebert STS2 wit h single output breaker SECTION A-A SIDE VIEW (WITH FRONT PANELS REMOVED) FRONT VIEW FRONT VIEW GROUND BUS .51 DIA. NEUTRAL BUS RIGHT SIDE VIEW .51 DIA. INPUT/OUTPUT BUS RIGHT SIDE VIEW NEUTRAL BUS GROUND BUS Ø A, Ø B, Ø C SYSTEM OUTPUT ?[...]

Installation Drawings 32 Figure 19 Electrical field connect ions: 800 – 1000 amp Liebert STS2 wit h dual output breakers PS212801 Rev . 03[...]

Installation Drawings 33 Figure 20 Liebert STS2 non-aut omatic circuit breaker sche dule 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 380-480V 600V 150K 100K 25K 600 ABB T5L 600 200-24[...]

Installation Drawings 34 Figure 21 Control connection location diagr am: 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) SEE NOTE 2 (OPTION) OR PROGRAMMABLE RELAY COM[...]

Installation Drawings 35 Figure 22 Control connection location diagr am: 800 – 1000 amp Liebert STS2 PROGRAMMABLE RELAY SEE OPTION LOCATION DETAIL BOARD (OPTION) SEE NOTE 2 Liebert IS-WEB/485 Card (Option) COMMS BOARD FOR LIEBERT SITESCAN, EXTERNAL MODEM INTERFACE (OPTION) FRONT VIEW WITH FRONT D OOR R EMOVE D CONTROL WIRING PS213800 Rev. 1 OPTIO[...]

Installation Drawings 36 Figure 23 Control wiring for remote source select ion option 1 2 3 4 6 5 S e e N o te 1 S2 S1 G N D G N D Rem o t e So ur ce Selec t ion PS 213007 Re v . 02 NO T ES 1. Cust om er - provided norm al l y open dr y cont act s . R at i ng 10mA at 30VD C . 2. M axi mum cable l engt h 500 ft. ( 152m) w i t h # 16 AWG , 300 V mini[...]

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 METERS) WITH 6. CONTACT RATINGS: 1AMP @ 30VDC, 20[...]

Installation Drawings 38 Figure 25 Control wiring for the i nput cont act isolator board option 2 15 34 67 1 4 11 9 81 0 1 2 1 3 1 5 1 6 “NO CUSTOMER CONNECTION” INPUT CONT ACT ISOLA TOR BOARD 02-810012-XX J51 PS213002 Rev . 03 NOTES: 1. Customer control wiring conn ection points are T e rminals 1 through 16 (see T able J51). 2. Customer-provid[...]

Installation Drawings 39 Figure 26 Control wiring for comms board E XT ERNAL M O DEM SEE D ETAI L A “NO CUS T O ME R CO NNECT I O N” P S 213003 Re v. 0 2 L I EBER T SIT ESC AN SEE D ETAI L B “NO CUS T O ME R CO NNE CT I O N” J8 1 J1 A CO M M S BO ARD 02- 810015-XX T B 55 T B56 TB 5 1 SEE NOT E 2 CU STO MER -SU PPLIED I NT E RCO NNE CT I NG [...]

Installation Drawings 40 Figure 27 Control wiring for the Lieber t 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 twisted pair cable #22 A WG minimum. Signal volt[...]

Installation Drawings 41 Figure 28 Control wiring for the RS-232 port L C D D I SPL AY S ee Detai l A Fr on t V iew Upp er Hal f of Un i t W i th Door O pe n P S 213006 Re v. 0 1 6 7 8 9 12345 TX D RX D G N D DB 9 Connec tor Detai l A NO T E S 1. R S - 232 c om m uni c at i on t hrough D B 9 c onnec t or . 2. C onnec t or ac c es s i bl e w i t h f[...]

Installation Drawings 42 Figure 29 Outline drawing for input junction box G C B A B D E H G D i am eter hol e A C I NPUT JUNCT I O N BO X Loc at ion of F a ct o ry-Su p p l i e d In p u t P o w e r Cable As sem bly Rec omm ended Loc at ion f o r Cus t om er Connect ion of I npu t P o wer Raceway ( by ot her s ) 3 - P hase , 3 - W ir e Plus G r ound[...]

Installation Drawings 43 Figure 30 Color LCD touch screen display PR EF E RR E D ALT E R N A T E RE S E T SIL EN C E SI S C R SH O R T S2 SC R SH O R T S1 SC R OPEN S2 SC R OPEN HE AT S IN K O V E RT E MP EQU IPM EN T O VER TEMP AMB IEN T O VER T EMP S O U RCE 2 SO U R C E 1 0 -3 0 + 3 0 SO U R C E 1 60 . 0 HZ 2 08 V 20 8V 20 8V A- B B- C C - A 2 0[...]

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 ) PS 211002 Rev . 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 Gree n Source 1 SCRs is On F Green Source 2[...]

Installation Drawings 45 Figure 32 Inst allation drawing, seismic floor st and 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 HOLES WITH BENT FLANGE FACING THE FRONT OF THE FLOO[...]

Installation Drawings 46 Figure 33 Inst allation drawing, seismic floor st and 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 BRACKET FRONT UPPER STS2 BRACKET FRONT (2 PLACES) CAP[...]

Installation Drawings 47 Figure 34 Inst allation drawing, seismic floor st and 100-250A A 2 P L A C ES 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) CAP SCREW M12-1.75X40MM SPLIT LOCK WASHER M1[...]

Installation Drawings 48 Figure 35 Inst allation drawing, seismic floor st and 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[...]

Installation Drawings 49 Figure 36 Inst allation drawing, seismic floor st and 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 FLANGE FACING THE FRONT OF THE FLOOR STAND (FIG. 3[...]

Installation Drawings 50 Figure 37 Inst allation drawing, seismic floor st and 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 BRACKET FRONT UPPER STS2 BRACKET FRONT (2 PLACES) CAP[...]

Installation Drawings 51 Figure 38 Inst allation drawing, seismic floor st and 400-600A A 2 P L A C ES 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) CAP SCREW M12-1.75X40MM SPLIT LOCK WASHER M1[...]

Installation Drawings 52 Figure 39 Inst allation drawing, seismic floor st and 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[...]

Installation Drawings 53 Figure 40 Inst allation drawing, seismic floor st and 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 FOOT DETAIL A FOOT DETAIL B RIGHT SIDE VIEW [...]

Installation Drawings 54 Figure 41 Inst allation drawing, seismic floor st and 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 BRACKET FRONT UPPER STS2 BRACKET FRONT (2 PLACES) CA[...]

Installation Drawings 55 Figure 42 Inst allation drawing, seismic floor st and 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 SCREW M12-1.75X40MM SPLIT LOCK WASHER M12 FLAT WASH[...]

Installation Drawings 56 Figure 43 Inst allation drawing, seismic floor st and 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[...]

Introduction to Lieb ert STS2 Operations 57 8.0 I NTRODUCTION TO L IEBERT STS2 O PERATIONS 8.1 System Description A Liebert STS2 provides an automatic, seamless tr ansfer between input power sources to an output load. The Liebert STS2 monitors the input sources, to ensure each source is operating wi thin set parameters, as well as ensure that each [...]

Introduction to Lieb ert STS2 Operations 58 8.1.2 Reliability and Agency Requirement s The Liebert STS2 is designed for high reliabilit y and high availability with a crit ical bus Mean Time Between Failure (MTBF) exceeding 1,000,000 hours. The Liebert STS2, Control/Power Module and all its options are designed, tested and certified, where applicab[...]

Introduction to Lieb ert STS2 Operations 59 8.2.4 Byp ass The static transfer switch can be manual ly bypassed to allow the power from a so urce to directly flow to the output load. This bypass allows the unit’s el ectronics to be serviced without dangerous voltages being present. The Liebert STS2 includes key-in terlocked maintenance bypass brea[...]

Theory of Operati on 60 9.0 T HEORY OF O PERATION 9.1 General Description The Liebert STS2 contains all the equipment necessa ry to prevent an interruption in power flow to the AC load, s hould your pri mary source fail. 9.1.1 Liebert STS2 St atic T ransfer Switch The Liebert STS2 is a 3-pole, double-throw, solid stat e automatic transfer switch th[...]

Theory of Operati on 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 T ransfer To ensure that power remains connected to the load, the Liebert STS2 automatically performs an emergency transfer from one input source to the othe r whe[...]

Theory of Operati on 62 9.2 Det ailed Component Descrip tion 9.2.1 Controls Operator Interface The Liebert STS2 Color Graphical Display unit co ntains a touch screen co lor LCD to pro vide the operator interface to control and configure the operation of the unit and qui ckly diagnose problems. A password and an optional keylock, if installed , are [...]

Theory of Operati on 63 9.2.2 Circuit Breakers Three circuit breakers p rovide total isolation of the solid-state sw itching devices with a n input breaker for each source and a load isolation br eaker. Two breakers provide for maintenance bypassing of the solid-st ate switching devices to either input source. All switches in the Lie bert STS2 are [...]

Operating Instructions for the Touch Screen Interface 64 10.0 O PERATING I NSTRUCTIONS FOR THE T OUCH S CRE EN I NTERFACE After the initial equipment startu p, the follow ing operating guidel ines can be used for standard equipment operation. These guidelin es should be reviewed for any special equipment modifications, special site conditions, or c[...]

Operating Instructions for the Touch Screen Interface 65 10.1 Normal System St artup 1. Ensure that all Liebert STS2 breakers—CB1, CB2, CB 3, CB3A (if sup plied), CB4, a nd CB5—are in the OFF position. a. Ensure that the key interlocks for CB 1 and CB2 have their bolts retracted. b. Ensure that the key interlocks fo r CB4 and CB5 have their bol[...]

Operating Instructions for the Touch Screen Interface 66 10.2 Manual T ransfer / Pref erred Source Selection The Source Transfer option (Source Xfers) in the touch screen menu allows you to select a preferred source. Transfers are only permitted wh en the volt age and current are withi n their proper operating range and the sources are synchronized[...]

Operating Instructions for the Touch Screen Interface 67 To manually select the preferred source : 1. Verify that the in put breakers CB1 and CB2 are clos ed. 2. Select SOURCE XFERS from the menu bar. The Select Preferred Source screen is displa yed in the Event D isplay. 3. Check the Mimic to verify that Source 1 and Source 2 input voltages are co[...]

Operating Instructions for the Touch Screen Interface 68 Figure 47 Gate board viewing slot lo cations If the Color Graphical Display is not available, you can still use the following bypass procedures, ignore the steps to check th e display and check the LEDs. If your system contains the LED display, see 14.2.3 - Maintenance Bypass . GREEN LEDS ON [...]

Operating Instructions for the Touch Screen Interface 69 10.4.1 Byp ass Procedures for Source 1 To bypass the swit ch for Source 1: 1. Verify that Source 1 is supplyin g power via the Mimic. • If the Color Gr aphical Display i s not availabl e, check the gate drive r board LEDs thro ugh the slots in the control pan el. See Figure 47 . 2. Remove t[...]

Operating Instructions for the Touch Screen Interface 70 10.4.2 Byp ass Procedures for Source 2 To bypass the swit ch for Source 2: 1. Verify that Source 2 is supplyin g power via the Mimic. • If the Color Gr aphical Display i s not availabl e, check the gate drive r board LEDs thro ugh the slots in the control pan el. See Figure 47 . 2. Remove t[...]

Alarm and Faults 71 11 . 0 A LARM AND F AULT S Alarms and faults are events that are triggered wh en the operation of the Liebert STS2 falls outside the defined parameters. These events can also be triggered by: user actions, such as cha nging configurations, clearing logs, etc.; failed components such as a fan fa ilure , an SCR that is open or clo[...]

Alarm and Faults 72 1 1.2 Event and History Logs The system tracks events through the Events Log and tracks sig nificant ev ents 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 can be accessed from the touch s creen menu or t[...]

Alarm and Faults 73 The History Log has the following fiel ds: • Replay Rate — indicates how l ong it take s for t he replay to pl ay. Use the UP and DOWN b uttons to set the time. • Status — the status of the Liebert STS2 at the po int of the current fram e in the replay. The History log has three statuses: Frozen , Not Frozen and Retrievi[...]

Alarm and Faults 74 T able 8 Event messages ID Alarm Message Description/Cause Action 001 S1 SCR SHORT One or more of the SCRs for Source 1 have shorted an d fail ed. D, F, A, E 002 S2 SCR SHORT One or more of the SCRs for Source 2 have shorted an d fail ed. D, F, A, E 003 S1 SCR OPEN On e or more of the SCRs for Source 1 is open. D, F, A, E 004 S2[...]

Alarm and Faults 75 085 CB2 (S2) OPEN Source 2, Cir cuit 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 (OUT PUT) OPEN Output circuit breaker (CB3) is open. A, E 089 CB3A (OUT PUT) OPEN Output circuit breaker [...]

Communication Interfaces 76 12.0 C OMMUNICATION I NTERFACES The Liebert STS2 monitoring system of fers several choices for communications. The RS-232 te rminal port is standard on all un its. Th e port is located inside the front door, to the left of the touch screen/LED front panel mounting as shown in Figure 28 . This port is primarily used as an[...]

Communication Interfaces 77 12.1.1 Connecting and Using a T erminal 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 ar e unsure of the cable pin out, see 15.2.10 - Terminal Port Connections . 1. Connect the terminal to the Liebert STS2 by plug ging the cable from[...]

Communication Interfaces 78 12.1.2 Configuring the Lie bert STS2 via the T erminal The SPT command is used to configure the syst em s setpoints. The SVT sy ntax for the setpoints consists for four parameters: SPT [ group ] [ item ] [ value ] where the parameters are: • SPT — is the terminal command that is used to configure setpoints. • group[...]

Communication Interfaces 79 Va l u e P a r a m e t e r Item settings, depending on what they are, use various value types. Table 10 provides a list of the possible value types and their descript ion. Table 11 shows the variou s groups, the settings co ntained within, and th e type of value it requi res. T able 10 V alue typ es Type Definition Numer[...]

Communication Interfaces 80 Group 3: User Settings 1 SCR1 Fast Undervoltage Setpoint Integer In % of nominal below nomin al 2 SCR1 Slow Undervoltage Setpoint Integer In % of nominal below nomin al 3 SCR1 Slow Undervoltage Detect Delay Integer In number of lines cycles 4 SCR1 Overvoltage Setpoint Integer In % of nominal above nomina l 5 SCR1 Overvol[...]

Communication Interfaces 81 12.1.3 Setting Bitp acked Options with the T erminal Five sets of options and features settings are available through the terminal to control the system operation. Under System Settings for the SPT command, th ese i tems denote which opti ons are INSTALLED: • 6 — Options_1 • 14 — Comms Options 1 • 15 — Comms [...]

Communication Interfaces 82 Critical Option Enabling bit0—EnableManual_IPeakReset bit1—EnableAutoRestart bit2 through bit15 - not used (set to 0) Non-Critical Optio n Enabling bit0 — EnableAutoReXfer bit1 through bit15 — not used (set to 0) The bits are set in reverse orde r, from bit 15 on th e le ft to bit 0 (zero) on the right. The bits [...]

Communication Interfaces 83 Putting the T erminal Command T ogether For example, a unit only has the Remote Source Se lection and Dual-Output Breaker opti ons 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 option s are installed. The bit setting is as follows, starting with b[...]

Communication Interfaces 84 12.1.4 Setting Event Masks with the T erminal The event masks can be customized via a terminal . The command SPT4?<ENTER> displays all fault s and alarms, along with t heir asso ciated event masks. A plus sign (+) means that particular event mask is enab led, while a min us sign (-) means that mask is disabled. Ref[...]

Liebert STS2 T ouch Screen Display 85 13.0 L IEBERT STS2 T OUCH S CREEN D ISPLAY The Liebert STS2 can be configur ed with a Colo r Graphical LCD touch screen that allow s you to quickly check the status of the unit an d identify pr oblems. A touch screen LCD is available through the fron t of the Liebert STS2. This screen provides a graphical (Mimi[...]

Liebert STS2 T ouch Screen Display 86 13.2 Menu Overview The touch screen menu provides access to config uration settings and more device information. The CONFIG (Configuration) and LOGS m enus provid e multiple choices thro ugh pop-u p menus. The SOURCE XFER menu selection allo ws you to select the preferre d source. The other menu choices provide[...]

Liebert STS2 T ouch Screen Display 87 13.2.1 Security Because the Liebert STS2 C olor Graphical Displa y 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. •C l e a r l o g s . • Make a source transfer. [...]

Liebert STS2 T ouch Screen Display 88 13.3 Mimic Display The Mimic display provides a color diagram of the operation of the Liebert ST S2. This displa y imitates th e power flow throug h the stati c transfer switch and indicates source status, breaker status, switch status, source voltage an d current re adings, output po wer measurements, an d act[...]

Liebert STS2 T ouch Screen Display 89 To set the event masks: 1. Access the Event Mask dialog box: a. Select CONFIG. b. Select EVENT MASK f rom the pop-up me nu. 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 setting, – or – b. Select NO to disable the se[...]

Liebert STS2 T ouch Screen Display 90 Figure 53 User settings dial og box Source Set Point s The Source 1/2 Set Points allows you to configure trig ger points for each input source (1 or 2) for the Liebert STS2 via a keypad dia log or HI/LO di alog box. The sou rce numbers do not designate the source as the preferred or alternate source. Th e numbe[...]

Liebert STS2 T ouch Screen Display 91 To configure the setpoints for each source: 1. Select SOURCE 1/2 Set Points fr om the User Setting s dialog box. The Source 1/2 Set Points dialog is displayed. Figure 54 Source setpoint s 2. Select 1 to configure the settings for Source 1. 3. Configure the settings using the keypad or di alog box tha t is displ[...]

Liebert STS2 T ouch Screen Display 92 8. Select FREQUENCY TRIP POINT. A keypad i s displayed. This choice verifie s that the source is running at the proper freque ncy. This choice sets the frequency de viation in the freq uency that trig gers the frequenc y trip point alarm. The frequency deviation setting is the allowa ble frequency vari ation fr[...]

Liebert STS2 T ouch 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. Select CONFIG from the menu bar. 2. Selec[...]

Liebert STS2 T ouch Screen Display 94 13.8.1 Configuring the Modem The Modem dialog box allows you to configure the op tional external modem th at is connected to the Liebert STS2. The dialog box contains a series of choi ces that access either a keypad or a secondary dialog to configure settings. Auto dial can al so be configured for the modem to [...]

Liebert STS2 T ouch Screen Display 95 9. Select INIT. STRING to config ure the initialization string. This string configures th e parameters of the modem. • Check your modem’s documentation for this set ting. 10. Select BAUD RATE to display a di alog with the ba ud rate choices: • For an external modem, select from 2400 bps, 960 0 bps or 1920[...]

Liebert STS2 T ouch Screen Display 96 13.8.3 Configuring the Inp ut Cont act Isolator Settings The Input Contact Isol ator (ICI) is an optional, eight-cha nnel input board for up t o eight external user alarm or message inputs to be rou ted to the Lieb ert STS2’s alarm network. If the Transfer Inhibit option is supplied, the ICI will accommodate [...]

Liebert STS2 T ouch Screen Display 97 A keyboard is displayed to allow yo u 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 keypad is displayed prom pting you for a delay time[...]

Liebert STS2 T ouch Screen Display 98 To configure your programmable re l ay 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 di splayed. Figure 58 Programmable relay board dialog box 2. Select your configuration set tin[...]

Liebert STS2 T ouch Screen Display 99 13.8.6 Liebert SiteScan ® Configu ration An optional RS-422 port, containe d 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 utili ze a PC to monitor the Liebert STS2’s status and check[...]

Liebert STS2 T ouch Screen Display 100 4-Pole T ransfer Switch This option is not available (factory-set to No ). Shunt This selection is se t at the factory. Wye Output T ransformer The Wye Output Transformer controls the firing of the SCRs on star tup, which minimizes the inrush into PDU transformers. Output brea kers and PDU input breakers have [...]

Liebert STS2 T ouch Screen Display 101 13.1 1 Logs Two types of logs are kept by the Liebert STS2: Event Log and History Log. 13.1 1.1Event 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 - Ev ent Log for more information on the Event Log and definit[...]

Liebert STS2 T ouch 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 but tons to replay the log: • Select PREV to go to the prev ious frame in the sequence. • Select NEXT to go to the next frame in the seque[...]

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 includ e 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 when a problem occurs. The LED panel can be replac[...]

Operating the Liebert STS2 LED Display 104 14.1.2 LED and Pu sh Button Description The following table defines the LEDs and push buttons in the LED displa y: T able 15 LED and push button des cription Symbol LED Description Action A Green Source 1 power is present A green LED is lit if the Source 1 input power is present. This LED only indicates th[...]

Operating the Liebert STS2 LED Display 105 14.1.3 Even t Controls When an alarm is trigge red, a red LED is lit in th e control panel. A pai r of buttons al lows you to turn off the horn and reset the alarm. 14.1.4 Key Lockout Switch An optional key lockout sw itch for the Liebert STS2 enables or di sables all push button in puts, except for the al[...]

Operating the Liebert STS2 LED Display 106 14.2 Operations This section discusses the syst em startup, shutdo wn 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 procedures. 14.2.1 Normal System S tartup This section pr[...]

Operating the Liebert STS2 LED Display 107 14.2.2 Manual T r ansfer / Preferred Source Selection The preferred source buttons allow you to change the preferred sou rce. Transfers are only permitted when the voltage and cu rrent are with in their prop er op erating range and the sources are synchronized. Transfer is inhibited if the deviat ion excee[...]

Operating the Liebert STS2 LED Display 108 14.2.3 Maintenance Byp ass The Liebert STS2 is equipped wi th two key-interlo cked, bypass breakers, CB4 and CB5, to a llow manual bypass of the switch electronics for eithe r in put source in the event of switch failure or for maintenance of the switch. Refer to th e static transfer sw itch one-line diagr[...]

Operating the Liebert STS2 LED Display 109 Byp ass Procedures for Source 2 To bypass the swit ch 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 . 2. Remove the interlock key from CB4 and plac[...]

Operating the Liebert STS2 LED Display 110 14.2.4 Normal System Shut down The Liebert STS2 can be shut do wn from either the static switch mode o r the bypass mode. Shut down in S t atic T ransfer Switch Mod e When the Liebert STS2 is oper ating in static transfer swi tch mode (not maintenance bypass mode): 1. Turn off the load equipment pe r manuf[...]

Specifications 111 15.0 S PECIFICATIONS This section provides the specifications for the Lieber t STS2. 15.1 System Configuration The Liebert STS2 can be set in se v eral different config urations, acco rding to the mode l and location. The configuration is set at the factory and does not need to be changed by the customer. These configurations app[...]

Specifications 112 15.1.4 Grounding Refer to 5.3 - S ystem Gr ounding for spe cifications and inst ructions regarding grounding. 15.1.5 Electric al Requirement s 15.1.6 Input Surge Suppressi on The Liebert STS2 is equipped with transient volt age surge suppression on each input for ma ximum surge suppression. The surge suppre ssi on is capable of p[...]

Specifications 113 15.2 System Component s All Liebert STS2 models provide two static transfer switches within one enclos ure, with the ability to transfer between two input so urces to a single output. All Liebert STS2s are configured wi th either an LCD Color Graphica l Interface touch screen display or LEDs for monitoring and configuring the uni[...]

Specifications 114 15.2.4 Access The Liebert STS2 is designed so al l repairs and maintenance can be do ne from the front or top of the unit. All components that may need repair or re placement during routine field maintenance are safely accessed with the units in bypass without removi ng power f rom the unit. These component s include: • All ele[...]

Specifications 115 15.2.9 RS-232 Po rt The unit is equipped with an RS-232 port for connect ing a terminal or PC. See Figure 28 for the port’s location. See 12.1 - Using the RS-232 Port for instruction s on using a PC term inal with the un it. 15.2.10 T erminal Port Connections The system has an asynchronous serial port conf igured as Data Termin[...]

Specifications 116 15.2.1 1 RS-232 Interface Parameters The service terminal interface parameters are the following settin gs and cannot be changed. 15.2.12 Maintenance Byp ass The Liebert STS2 is conf igured to allow the unit’s el ectronics to be bypassed to either input source for maintenance without interrupt ion of power to the load. The Lieb[...]

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 co rner of the LCD display. Indented text = help text shown in the Disp lay Panel in the lower right corner of LCD display . BOLD = commands that are sent through the RS-232 port. S1 SCR SHORT Source 1 SC[...]

Event Message Help Text 118 S2 SCR OPEN Source 2 SCR Open. One or more SCRs on Source 2 is op en. T r ansferring between source s has been inhibited. Liebert STS2 output has been transferred to Source 1. Contact Liebert Services for technical support at 1-800-LI EBERT (800-543-2378). Press SILENCE on the touch screen to turn off the audible alarm, [...]

Event Message Help Text 119 PWR SPLY DC A FAIL Power Supply DC Bus A Failed. The primary power supply is no longer providing DC pow er to the control bo ard and the touch screen. Contact Liebert Services for technical support at 1-800-LI EBERT (800-543-2378). Press SILENCE on the touch screen to turn off the audible alarm, if so configur ed. If you[...]

Event Message Help Text 120 PWR SPLY S2 AC FAIL Power Supply Source 2 AC Failed. The AC input power to the power supplie s from Source 2 has failed. The power supplies are now operating on AC power from Source 1. The AC input from Source 2 is still good. Contact Liebert Services for technical support at 1-800-LI EBERT (800-543-2378). Press SILENCE [...]

Event Message Help Text 121 S1 VOLT SENSE FAIL Source 1 V oltage Sense Module Fail ed. The module co ntained on the snubb er monitoring the input vo ltage from Source 1 has failed. Press SILENCE on the touch screen to turn off the audible alarm, if so configur ed. If you are accessing the Liebert STS2 system from a terminal, type SH and press RETUR[...]

Event Message Help Text 122 S2 SCR SENSE FAIL Source 2 SCR Sense Module Failed. The module contained on the snubb er monitoring the SCRs for Source 2 has failed. Press SILENCE on the touch screen to turn off the audible alarm, if so configur ed. If you are accessing the Liebert STS2 system from a terminal, type SH and press RETURN on your keyboard [...]

Event Message Help Text 123 S2 GATE DRIVE FAIL Source 1 Gate Drive Failure. The gate drive module for an SCR for Source 2 has failed. This module is contained on the left side gate driver board . Press SILENCE on the touch screen to turn off the audible alarm, if so configur ed. If you are accessing the Liebert STS2 system from a terminal, type SH [...]

Event Message Help Text 124 CB1 SHUNT TRIP FAIL Circuit Breaker 1 Shunt Trip Failure. Circuit Breaker 1 failed to trip open when the contro l issued a command for the circuit breaker to trip. Press SILENCE on the touch screen to turn off the audible alarm, if so configur ed. If you are accessing the Liebert STS2 system from a terminal, type SH and [...]

Event Message Help Text 125 S1 UV Source 1 Under V oltage (fast detection). The input voltage from Source 1 dropped below a set percentage of the nominal voltage, as set in the Fast UV set point under the User Settings. An S1 Fail alarm was a l so issued and source transfer has been inhibited. The load of the Liebert STS2 has been transferred to So[...]

Event Message Help Text 126 S1 OF/UF Source 1 Over Frequency/Under Freque ncy . The frequency for Source 1 is running outside the acceptable operating range, as set in the Frequency Trip Point under User Settings. An S1 Fail alarm was also issued and source tran sfer has been inhibited. Press SILENCE on the touch screen to turn off the audible alar[...]

Event Message Help Text 127 S2 UV (RMS) Source 2 Under V oltage (slow detection). The input voltage from Source 2 remained below a set percentag e of the nominal voltage for a designated period, as se t in the Slow UV Setting and Slow UV Detection Delay set points configured under the User Settings. An S2 Fail alarm was also issued and source trans[...]

Event Message Help Text 128 S2 FAIL Source 2 Failure. Source 2 has failed due to under voltage (UV), over voltage (O V), or running with an over or unde r frequency (OF/UF). Th is alarm is a companion to S2 UV , S2 UV (RMS), S2 OV and S2 OF/UF . The load of the Liebert STS2 has been transferred to Source 1. Press SILENCE on the touch screen to turn[...]

Event Message Help Text 129 S1 I-PEAK Current Peak on Source 1. The peak current from Source 1 has exceeded the set point as defined in the I-PK Xfer Lockout setting under User Settings. T ransferring to Source 2 has been inhibited . Press SILENCE on the touch screen to turn off the audible alarm, if so configur ed. If you are accessing the Liebert[...]

Event Message Help Text 130 LOAD ON ALT SOURCE Liebert STS2 load on the alternate source. The static transfer switch is running on the altern ate power source. Check the Event Log to determine the reason fo r the transfer from the prefe rred source. Another event has caused the sy stem to transfer to the alternate source. The system return s the lo[...]

Event Message Help Text 131 CB2 (S2) OPEN Circuit Breaker 2 (for Source 2) Open. Circuit Breaker 2 is not closed. Check that the Circuit Breaker 2 switch is in the desired position. Press SILENCE on the touch screen to turn off the audible alarm, if so configur ed. If you are accessing the Liebert STS2 system from a terminal, type SH and press RETU[...]

Event Message Help Text 132 CB3A (OUTPUT) OPEN Circuit Breaker 3A (Output breaker) is Open (Optional). Circuit breaker 3A is not closed. This circuit breaker is assign ed to the output load. The power flow to the load cannot flow through the static transfer switch. Press SILENCE on the touch screen to turn off the audible alarm, if so configur ed. [...]

Event Message Help Text 133 TRANSFER INHIBITED T ransfer Inhibited. Uninterrupted transfer between sources is inhibited due to input source failure, sources out of sync, swi tch failure, or the unit is in bypass mode. Check the Event Log for the event or ev ents that may have ca used the alarm. Press SILENCE on the touch screen to turn off the audi[...]

Event Message Help Text 134 INPUT CONTACT #2 Input Contact Isolator #2. Occurrence of the indicated ex ternal event has been dete cted by Input Contact Isolator #2 of the Open Co mms Digital Input option board. Press SILENCE on the touch screen to turn off the audible alarm, if so configur ed. If you are accessing the Liebert STS2 system from a ter[...]

Event Message Help Text 135 INPUT CONTACT #6 Input Contact Isolator #6. Occurrence of the indicated ex ternal event has been dete cted by Input Contact Isolator #6 of the Open Co mms Digital Input option board. Press SILENCE on the touch screen to turn off the audible alarm, if so configur ed. If you are accessing the Liebert STS2 system from a ter[...]

Event Message Help Text 136 CONFIG MODIFIED Configuration Modified. A set point has b een updated and saved. Press SILENCE on the touch screen to turn off the audible alarm, if so configur ed. If you are accessing the Liebert STS2 system from a terminal, type SH and press RETURN on your keyboard to turn off the audible alarm. The event was written [...]

Event Message Help Text 137 EVENT LOG CLEARED Event Log Cleared. All past alarms and faults are no longer recorded in the system’s event log. Press SILENCE on the touch screen to turn off the audible alarm, if so configur ed. If you are accessing the Liebert STS2 system from a terminal, type SH and press RETURN on your keyboard to turn off the au[...]

Maintenance 138 17.0 M AINTENANCE Minimal periodic maintenance of th e Liebert STS2 is required. As wi th all electrical distribution components, the system should be regularly inspected for electrical connection integrity, signs of excessive temperatures, dirt accumula tion, and proper system operation. 17.1 Proper T ightening of Nut s and Bolt s [...]

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. Li ebert Services offers a complete range of startup services, repair services, [...]

Maintenance 140 P ROGRAMMABLE R ELAY B OA RD S ETTINGS R ECORD The optional Prog rammable Relay B oard (PRB) has ei ght 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 Liebert STS2 has the PRB op tion installed, list[...]

Maintenance 141 Channel 8: Channel 9: Channel 10: PRB Notes:[...]

Maintenance 142 I NPUT C ONT ACT I SOLATOR S ETTINGS R ECORD The Input Contact Isolator board (ICI) provides an Liebert STS2 module in terface for up to eight external user alarm or message inputs to be rout ed through the Liebert ST S2’s alarm network. See 6.4 - Input Contact Isolator Board for more information on the ICI. If your Liebert STS2 h[...]

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Ensuring The Hi gh Av ailab ilit y Of Mission-Critic al Dat a And Appli catio ns. Emerson Net work P ower , a business of Emer son (NYSE:EMR), is the global leader in enabling Business-Critic al Continuit y ™ from grid to chip f or telecommunication networks, data centers, health care and industrial facilities. Emerson Network Po wer provides inn[...]