Liebert STS2 User Manual Download Page 1

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AC Power
For

Business-Critical Continuity™

Liebert

Static Transfer Switch 2

™

User Manual–100-1000A, 50/60Hz

Summary of Contents for STS2

Page 1: ...AC Power For Business Critical Continuity Liebert Static Transfer Switch 2 User Manual 100 1000A 50 60Hz...

Page 2: ......

Page 3: ...ling and Anchoring the Static Switch Using Floor Stand 8 5 0 POWER AND CONTROL WIRING 9 5 1 Input And Output Power Connections 9 5 2 Input Junction Box Installation Optional 10 5 3 System Grounding 12...

Page 4: ...9 1 6 SCR Failure 61 9 1 7 On Off Sequence 61 9 2 Detailed Component Description 61 9 2 1 Controls 61 9 2 2 Circuit Breakers 62 9 2 3 SCRs 62 9 2 4 Logic Modules 63 9 2 5 Audible Alarm 63 9 2 6 RS 232...

Page 5: ...ocedure 102 13 6 6 Help 102 13 6 7 Logo 102 13 7 Cleaning the LCD Touch Screen 102 14 0 OPERATING THE LIEBERT STS2 LED DISPLAY 103 14 1 LEDs and Buttons and Key Lockout Switch 103 14 1 1 Front Panel C...

Page 6: ...y 114 15 2 9 RS 232 Port 115 15 2 10 Terminal Port Connections 115 15 2 11 RS 232 Interface Parameters 116 15 2 12 Maintenance Bypass 116 15 2 13 Fuseless Design 116 15 2 14 Options 116 16 0 EVENT MES...

Page 7: ...dual output breakers 32 Figure 20 Liebert STS2 non automatic circuit breaker schedule 33 Figure 21 Control connection location diagram 100 600 amp Liebert STS2 34 Figure 22 Control connection locatio...

Page 8: ...Input junction box dimensions 11 Table 4 Input junction box terminal wire size range 11 Table 5 Remote source selection terminal block 13 Table 6 Terminal block 1 and terminal block 2 wire connection...

Page 9: ...and install the unit in an area free from flammable liquids gases or corrosive substances The unit is designed to operate from solidly grounded AC power sources only Provide input over current protect...

Page 10: ...hould that be required 5 0 Power and Control Wiring provides instructions wiring the Liebert STS2 for power and con trol connections 6 0 Options lists the options available for the Liebert STS2 7 0 In...

Page 11: ...hree types of messages are used throughout this manual to stress important text Carefully read the information below each Warning Caution and Note and use professional skills and prudent care when per...

Page 12: ...to verify that the model numbers correspond with the one specified Record the model numbers and serial numbers in the front of this installation manual A record of this information is necessary shoul...

Page 13: ...rom under the frame of the unit 4 Use a forklift to raise the unit off the pallet and onto the floor Ensure that the forklift is clear of the unit s casters and leveling feet Lift the unit from the re...

Page 14: ...key lockout switch see Figures 8 through 10 for location of that switch 3 1 Recommended Minimum Service Clearances The recommended service clearances are at the front of the unit The minimum service...

Page 15: ...emperature for full load operation at altitudes above 4000 feet 1200 m Figure 2 Maximum ambient temperature for full load operation at higher altitudes 0 10 000 3048 9500 2896 9000 2743 8500 2591 8000...

Page 16: ...casters and leveling feet After final positioning of the unit adjust the leveling feet located in each corner of the frame base to level and stabilize the unit 4 3 Leveling and Anchoring the Static S...

Page 17: ...s are not furnished the input power connections are made to the bus bars pro vided inside the unit These bus bars are accessible through the front of the unit Output power connections also are made to...

Page 18: ...ovided with this option This option is available only with bottom cable entrance typically when the unit is located on a raised floor If the input junction boxes will be used they may be shipped eithe...

Page 19: ...ion 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 30 762 16 406 6 152 Table 4 Input junction bo...

Page 20: ...neutrals of two grounded power sources together effec tively grounds each of the sources at more than one point which allows neutral current to flow on the ground system defeats ground fault protecti...

Page 21: ...Connections are made to four of the connections using Form A dry contacts The con tacts are numbered left to right See 10 3 Enabling Remote Source Selection for instructions on enabling the Remote Sou...

Page 22: ...itch on the primary of an isolation trans former optimized transfer greatly reduces the transformer magnetization current during automatic transfers through a new transfer control algorithm The Lieber...

Page 23: ...unication port for communication to a Liebert SiteScan monitoring system using a 2 wire twisted pair for reliable communication up to 1000 meters 3281 feet Information available from the RS 422 port i...

Page 24: ...e Selection controls See 10 3 Enabling Remote Source Selection for instructions on enabling the Remote Source Selection See Figures 21 and 22 for the location of the Remote Source Selection option See...

Page 25: ...Installation Optional on page 10 for more information and specifi cations See Figure 29 for wiring details 6 12 Seismic Floor Anchors Seismic anchors are available for anchoring the unit to a concrete...

Page 26: ...ile handling 8 Color IBM off white 9 Open door to replace air filter disposable type size 1x25x25 10 Threaded mounting holes see detail a are provided for seismic anchoring or floor stand Mounting bol...

Page 27: ...Installation Drawings 19 Figure 6 Outline drawing 400 600 amp Liebert STS2 PS211400 Rev 02...

Page 28: ...Installation Drawings 20 Figure 7 Outline drawing 800 1000 amp Liebert STS2 PS211800 Rev 02...

Page 29: ...x for 100A switch 4680 btu hr 1 37 kW hr max for 250A switch 5 Weight 780 lb 354 kg 6 Unit bottom is structurally adequate for forklift handling 7 Keep cabinet within 15 degrees of vertical while hand...

Page 30: ...Installation Drawings 22 Figure 9 Outline drawing 400 600 amp Liebert STS2 with a key lockout switch option PS211401 Rev 02...

Page 31: ...Installation Drawings 23 Figure 10 Outline drawing 800 1000 amp Liebert STS2 with the key lockout switch option PS211801 Rev 02...

Page 32: ...R FLOOR BRACKETS ON FLOOR AT LEAST 75 FROM BACK WALL MARK LOCATION AND DRILL HOLES FIG 1 TO A MINIMUM DEPTH OF 4 12 INTO THE CONCRETE 3 INSTALL REAR CABINET BASE BRACKET FIG 2 TO EXISTING HOLES ON UND...

Page 33: ...S ON FLOOR AT LEAST 75 FROM BACK WALL MARK LOCATION AND DRILL HOLES FIG 1 TO A MINIMUM DEPTH OF 4 12 INTO THE CONCRETE 3 INSTALL REAR CABINET BASE BRACKET FIG 2 TO EXISTING HOLES ON UNDERSIDE OF UNIT...

Page 34: ...WALL MARK LOCATION A ND DRILL HOLES FIG 1 TO A MINIMUM DEPTH OF 4 12 INTO THE CONCRETE 3 INSTALL REAR CABINET BASE BRACKET FIG 2 TO EXISTING HOLES ON UNDERSIDE OF UNIT WITH TABS FACING BACK WALL USE...

Page 35: ...ACCORDANCE WITH NATIONAL 4 ALUMINUM AND COPPER CLAD ALUMINUM CABLES ARE 3 CONTROL WIRING AND POWER WIRING MUST BE RUN 2 TOP AND BOTTOM CABLE ENTRY AVAILABLE THROUGH AND LOCAL ELECTRICAL CODES NOT REC...

Page 36: ...Installation Drawings 28 Figure 15 Electrical field connections drawing 100 250 amp Liebert STS2 with dual output breakers PS212101 Rev 04...

Page 37: ...K1 CB3 K3 K1 K2 CB5 SOURCE 1 CB1 CB2 SOURCE 2 NOT RECOMMENDED NOTES 1 ALL DIMENSIONS ARE IN INCHES AND MILLIMETERS 5 ALL WIRING IS TO BE IN ACCORDANCE WITH NATIONAL 4 ALUMINUM AND COPPER CLAD ALUMINU...

Page 38: ...Installation Drawings 30 Figure 17 Electrical field connections drawing 400 600 amp Liebert STS2 with dual output breakers PS212401 Rev 03...

Page 39: ...3 K2 K1 CB5 K3 K1 K2 SOURCE 1 CB1 SOURCE 2 CB2 NOT RECOMMENDED NOTES 1 ALL DIMENSIONS ARE IN INCHES AND MILLIMETERS 5 ALL WIRING IS TO BE IN ACCORDANCE WITH NATIONAL 4 ALUMINUM AND COPPER CLAD ALUMINU...

Page 40: ...Installation Drawings 32 Figure 19 Electrical field connections 800 1000 amp Liebert STS2 with dual output breakers PS212801 Rev 03...

Page 41: ...J 400 200 240V 380 480V 600V 100K 100K 25K 600 Merlin Gerin NSJ 600 200 240V 380 480V 600V 100K 100K 25K 800 Square D PJ 800 200 240V 380 480V 600V 100K 65K 25K 1000 Square D PJ 1200 200 240V 380 480V...

Page 42: ...OLATOR BOARD PROGRAMMABLE RELAY SEE OPTION OPTION LOCATION DETAIL LOCATION DETAIL BOARD OPTION SEE NOTE 2 OPTION OR PROGRAMMABLE RELAY COMMS BOARD FOR LIEBERT SITESCAN EXTERNAL MODEM INTERFACE OPTION...

Page 43: ...OMMS BOARD FOR LIEBERT SITESCAN EXTERNAL MODEM INTERFACE OPTION FRONT VIEW WITH FRONT D OOR R EMOVE D CONTROL WIRING PS213800 Rev 1 OPTION LOCATION DETAIL SELECT OPTION REMOTE SOURCE BOARD OPTION SEE...

Page 44: ...DC 2 Maximum cable length 500 ft 152m with 16 AWG 300V minimum flexible stranded cable 3 All control wiring by others must be run separate from power wiring Control wiring runs should not be combined...

Page 45: ...TION OPERATION MAINTENANCE SIGNAL CHANNELS WITH 2 FORM C DRY CONTACTS PER 2 PROGRAMMABLE RELAY BOARD OPTION INCLUDES 8 TERMINAL BLOCKS 1 THROUGH 15 1 CUSTOMER CONTROL WIRING CONNECTION POINTS ARE AND...

Page 46: ...operation AND maintenance manual for configuring the input contact isolator board option 4 All control wiring by others must be run separate from power wiring Control wiring runs should not be combin...

Page 47: ...5 6 7 8 J81 RI DSR RX TX DTR GND DCD RTS CTS DETAIL B TB 55 1 2 3 NOTES 1 Maximum cable length 1000 feet 300 meters with twisted pair cable 22 AWG 300V minimum 2 Signal voltage 5VDC current 10mA 3 Re...

Page 48: ...tion details 4 All control wiring by others must be run separate from power wiring Control wiring runs should not be combined in the same conduit 5 Refer to control connection location diagram of stat...

Page 49: ...ISPLAY See Detail A Front View Upper Half of Unit With Door Open PS213006 Rev 01 6 7 8 9 1 2 3 4 5 TXD RXD GND DB9 Connector Detail A NOTES 1 RS 232 communication through DB9 connector 2 Connector acc...

Page 50: ...S211005 Rev 0 NOTES 1 Two junction boxes are supplied one for each input 2 Cable s are factory supplied to connect the junction box to the input busbars See electrical field connections drawing for lo...

Page 51: ...BIENT OVERTEMP SOURCE 2 SOURCE 1 0 30 30 SO URCE 1 60 0 HZ 208V 208V 208V A B B C C A 200A 200A 200A OUTPUT XFERS 80 KW 70 KVA 0 LOAD 70 LOAD CB5 CB4 EVENT DISPLAY MENU OPTIONS PS211000 Rev 0 ALARM CO...

Page 52: ...Source 2 SCRs is On G Yellow Source Transfer Inhibited H Green Push Button to Select Source 1 as the Preferred Source I Green Push Button to Select Source 2 as the Preferred Source J Green Output Pow...

Page 53: ...R STAND FEET LOOSEN ADJUST AND TIGHTEN THE NUTS AND JAM NUT SHOWN IN FOOT DETAIL A B ON DWG PS215000 FLOOR STAND MUST BE LEVEL AND ALL FEET MUST BE TOUCHING THE FLOOR ATTACH FLOOR STAND FEET USING 1 2...

Page 54: ...12 1 75X40MM SPLIT LOCK WASHER M12 FLAT WASHER M12 SEE DETAIL C 2 PLACES CAP SCREW M12 1 75X40MM SPLIT LOCK WASHER M12 FLAT WASHER M12 REAR UPPER STS2 BRACKET REAR SIDE REAR LOWER BRACKET FIG 4 RIGHT...

Page 55: ...ACKET 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 WASHER M12 LOWER FRO...

Page 56: ...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 P...

Page 57: ...CAL HEIGHT OF FLOOR STAND FEET LOOSEN ADJUST AND TIGHTEN THE NUTS AND JAM NUT SHOWN IN FOOT DETAIL A B ON DWG PS216000 FLOOR STAND MUST BE LEVEL AND ALL FEET MUST BE TOUCHING THE FLOOR ATTACH FLOOR ST...

Page 58: ...ET FRONT 2 PLACES CAP SCREW M12 1 75X40MM SPLIT LOCK WASHER M12 FLAT WASHER M12 SEE DETAIL C 2 PLACES CAP SCREW M12 1 75X40MM SPLIT LOCK WASHER M12 FLAT WASHER M12 REAR UPPER STS2 BRACKET REAR SIDE RE...

Page 59: ...ACKET 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 WASHER M12 LOWER FRO...

Page 60: ...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 PS...

Page 61: ...ER FEET NUTS 4 FLOOR STAND CAN BE MOUNTED NEXT TO A WALL IF NEEDED REAR ACCESS NOT REQUIRED INSTALL FLOOR STAND WITH FEET ORIENTATED AS SHOWN IN BOTTOM VIEW DWG PS217000 TO ADJUST VERTICAL HEIGHT OF F...

Page 62: ...ET FRONT 2 PLACES CAP SCREW M12 1 75X40MM SPLIT LOCK WASHER M12 FLAT WASHER M12 SEE DETAIL C 2 PLACES CAP SCREW M12 1 75X40MM SPLIT LOCK WASHER M12 FLAT WASHER M12 REAR UPPER STS2 BRACKET REAR SIDE RE...

Page 63: ...LIDE 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 WASHER M12 LOWER FRONT BRACKET NOTE...

Page 64: ...wings 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...

Page 65: ...ific voltage current and environmental parameters can be configured to trigger events that can sound an alarm write to a history log and either transfer sources or inhibit a transfer In units not equi...

Page 66: ...zing the load All solid state power switching devices are rated to prevent hazardous device failure in power systems with avail able fault currents up to the defined limits as listed in 15 1 5 Electri...

Page 67: ...nd help is available to define events See Figure 44 below and Figure 30 The touch screen menus allow the operator to ini tiate source transfers view event and history logs and view bypass and other op...

Page 68: ...n a manual transfer by selecting the inactive source as the preferred source On a manual trans fer the Liebert STS2 transfers between the two sources with less than one 1 millisecond interrup tion of...

Page 69: ...e Source Set Points heading for details 9 1 6 SCR Failure The Liebert STS2 continuously monitors the status of the SCR switching devices for proper operation In the event of a shorted SCR on the input...

Page 70: ...ystem both faults and alarms are detected and displayed on the LCD See 11 0 Alarm and Faults on page 71 for more information on events A set of event masks can be configured through the LCD to trigger...

Page 71: ...m is installed on the control board This alarm is triggered by an alarm condition detected on the unit The alarm can be turned off from the touch screen Color Graphical Display units or by a push butt...

Page 72: ...LCD touch screen display This display is discussed in more detail later in the manual See 13 0 Liebert STS2 Touch Screen Display See Figures 14 19 for circuit breaker locations CAUTION Before the uni...

Page 73: ...s is correctly indicated on the Mimic screen 8 Verify that boxes for the preferred source and corresponding static transfer switch are highlighted on the Mimic screen indicating which side of the Stat...

Page 74: ...Transfer is inhibited if the deviation exceeds the parameter set in the Source Set Points See User Settings on page 89 If your system contains the LED front panel instead of the LCD touch screen refer...

Page 75: ...ice If your system contains the LED display or you are configuring the system from the RS 232 port see 12 1 Using the RS 232 Port on page 76 for instructions on using the that interface 10 4 Maintenan...

Page 76: ...ontains the LED display see 14 2 3 Maintenance Bypass GREEN LEDS ON THE GATE DRIVER BOARD ARE VIEWABLE THROUGH THIS SLOT INDICATE THAT THE STS IS ON SOURCE 1 GREEN LEDS ON THE GATE DRIVER BOARD ARE VI...

Page 77: ...o remove power from static switch To return to the normal mode 1 Remove the key from CB5 and insert it in the CB1 breaker interlock 2 Rotate key to retract interlock 3 Close source input breaker CB1 4...

Page 78: ...ate the keys in CB5 interlock to extend the interlock 9 Remove the proper key from CB5 interlock and insert it into CB1 breaker interlock 10 Rotate the key to retract the CB1 breaker interlock 11 Clos...

Page 79: ...t to latch the alarm messages remain active until the alarm condition has been corrected and the RESET button is pushed See 11 1 Event Mask for more information on latching When the system is furnishe...

Page 80: ...ed major alarm occurs the History Status buffer is frozen capturing 64 sequential frames before and after the alarm condition When the History Status buffer is frozen a History Log is created Two Hist...

Page 81: ...ce input switch CB1 or CB2 to prevent transfers in the event of an SCR failure The SCR failure must be investigated and repaired before returning the switch to normal operation Both source input switc...

Page 82: ...ed D A E 017 S1 CURR SENSE FAIL The Source 1 SCR current module failed D A E 018 S2 CURR SENSE FAIL The Source 2 SCR current module failed D A E 019 S1 GATE DRIVE FAIL The Source 1 gate drive module f...

Page 83: ...nal alarm input The alarm name can be programmed with an alarm name from the Input Contactor Isolator settings option under the Comm Options See Configuring the Input Contact Isolator Settings on page...

Page 84: ...stem with an existing Building Manage ment System BMS or out of band monitoring using Modbus a standard multi drop protocol The card has redundant communication paths that make it possible to connect...

Page 85: ...Screen Display for more details about the commands Some terminal commands require a password to function Use the PWD command and a valid pass word to gain access Table 9 Terminal commands Keys Functi...

Page 86: ...and Sys tem Settings are Group 2 The numbers shown below are entered for the group parameter For exam ple start of a System Settings command is SPT 2 The group parameters are 1 System Ratings 2 System...

Page 87: ...s a large amount of data within a single entry A detailed description of this type appears in section 12 1 3 Setting Bitpacked Options with the Terminal on page 81 Event Masks This type is a specially...

Page 88: ...dervoltage Detect Delay Integer In number of lines cycles 10 SCR2 Overvoltage Setpoint Integer In of nominal above nominal 11 SCR2 Overvoltage Detect Delay Integer In 1 4 lines cycles 12 SCR2 I peak T...

Page 89: ...and features are as follows Options_1 bit0 HasDualOutputBreaker bit1 HasPDU bit2 Has4PoleTransferSwitch bit3 HasShuntTrip bit4 HasWyeOutputXfmr bit5 HasExternalPrecisionTimeSource bit6 HasSFA bit7 Ha...

Page 90: ...ry value for that group For example if the fourth bit in a group is set to 1 the group group s binary value is 0001 Each group is translated into a hexadecimal equivalent The group with the value of 0...

Page 91: ...ans that mask is disabled Refer to 11 1 Event Mask on page 71 for more information on event masks and their associated flags Unlike the System and User Settings mask values are set by designated lette...

Page 92: ...nd go into the Event Log use SPT 4 12 D E To disable all masks for event 120 INPUT CONTACT 1 use SPT 4 120 D L S E A To breakdown this syntax for the last example SPT SVT command 4 group parameter ide...

Page 93: ...alarm notification and other system setpoints The touch screen also provides buttons to reset alarms and turn off audi ble alarms such as a horn 13 1 Display Overview The Liebert STS2 Color Graphical...

Page 94: ...he factory to default settings These settings enable the unit to be brought up without the need to enter all selectable parameters The menus allow the set tings to be customized Figure 49 Menus Figure...

Page 95: ...8 through 10 for location of the key lockout switch To disable the changes turn the key to the top of the switch toward the closed padlock To enable changes turn the key to the horizontal position tow...

Page 96: ...any message in the Event Display to display more information in the Display Panel to the left The selected status is displayed in bold type 13 6 Menu bar As previously mentioned the menu bar provides...

Page 97: ...NO to disable the setting 3 Select SAVE to keep the settings Figure 52 Event mask dialog box User Settings The User Settings choice allows you to adjust the user accessible switch settings Access is...

Page 98: ...of the nominal voltage the Liebert STS2 transfers from the current source to the opposite source Slow UV Setting if the voltage remains this set percentage below the nominal voltage for the period of...

Page 99: ...difference between the sources and applies to all manual transfers as well as any auto retransfer a Configure this setting with a range of 1 30 degrees The default setting is 15 degrees and the resolu...

Page 100: ...box You can select TEST to briefly sound the alarm to judge its volume 11 Select DISPLAY BRIGHTNESS A dialog box is displayed with HI and LO settings This choice sets the brightness for the touch scr...

Page 101: ...ns dialog box allows you to configure the communications settings for the Liebert STS2 Select COMM OPTIONS from the System Settings Menu The Comm Options dialog box is displayed See Figure 55 An optio...

Page 102: ...ction the system transmits a present status data including all active alarms messages After transmission the modem automatically hangs up and returns to the auto answer mode To configure the modem 1 S...

Page 103: ...x to activate the settings You are returned to the Comm Options dialog box Configuring Pager Support Pager support will be implemented in an upcoming update of the system This support will trigger the...

Page 104: ...button FAN 4 Select OK on the keyboard to keep your label 5 Select DELAY A keypad is displayed prompting you for a delay time in seconds for a condition to exist before the alarm is triggered 6 Enter...

Page 105: ...set ting is selected for a relay no other event needs to be assigned for that relay ON SOURCE 1 or ON SOURCE 2 can be assigned to a relay to send a notification when that source is being used by the l...

Page 106: ...ld group the events logically to simplify troubleshooting when an event is triggered 4 Select SAVE to keep the settings 5 Select OK for the applicable Programmable Options Board option in the Comm Opt...

Page 107: ...d YES for all the settings that you want activated 2 Select SAVE to keep the settings Whenever you make modifications to the any of the Comm Options select SAVE to keep the changes System Options Most...

Page 108: ...put Transformer choice in the System Options dialog box Remote Source Selection If your system is configured with the optional Remote Source Selection it must be enabled from the System Options menu S...

Page 109: ...Log 1 Select LOGS from the menu bar to open the Logs menu 2 Select EVENT LOG from the menu 3 Use the UP and DOWN buttons to scroll through the event list 4 Select OK to close the Event Log The data re...

Page 110: ...re also provided on 10 1 Normal System Turn On for Color Graphical display units and 14 2 1 Normal System Turn On for LED Display units 13 6 5 Bypass Procedure You can access instructions for bypassin...

Page 111: ...are available in the Color Graphical Display touch screen See 12 1 Using the RS 232 Port for instructions on setting up and using a terminal with the unit 14 1 LEDs and Buttons and Key Lockout Switch...

Page 112: ...A green LED is lit if the button has been pushed to set Source 1 as the preferred source I Green Push button to select Source 2 as the preferred source A green LED is lit if the button has been pushed...

Page 113: ...ctions to turn on your Liebert STS2 The LEDs provide the basic informa tion required to ensure proper operation To monitor metering data use a PC terminal 1 Ensure that all Liebert STS2 breakers CB1 C...

Page 114: ...erminal to identify the alarm Refer to 11 0 Alarm and Faults for a description of the alarms and possible causes All active alarm conditions should be corrected before proceeding 12 If the unit is sup...

Page 115: ...respective LEDs are lit 5 Push the Preferred Source button for the desired source See Table 15 on page 104 The Preferred Source LED_PREFx LED turns on for that source When conditions are correct the...

Page 116: ...nsert the key into the CB4 bypass breaker interlock 6 Rotate interlock keys in the CB4 bypass breaker interlock to retract the interlock 7 Close bypass breaker CB4 The LED for CB4 turns on 8 Open sour...

Page 117: ...ied to remove power from static switch The LEDs for CB3 and CB3A if supplied turn off 10 Verify that the output LED is lit Power is now flowing directly from the source to the load without passing thr...

Page 118: ...nt output configuration The LEDs for CB3 and CB3A if supplied and the output OUT are turned off 3 Open the input switches CB1 and CB2 The LEDs for CB1 and CB2 are turned off 4 To completely de energiz...

Page 119: ...se AC 3 or 4 wire plus ground The Liebert STS2 is designed to accept an input neutral from each source The neutral is switched in the 4 pole static transfer switch only The voltage shall be within 10...

Page 120: ...delay time is less than 4 ms The over voltage detection uses a single threshold with programmable level and delay time See User Settings on page 89 for instructions on configuring these settings 15 1...

Page 121: ...ase of installation plus permanent leveling feet for final installation The unit also can be fastened to the floor using optional seismic anchors to meet seismic Zone 4 requirements See 4 0 Locating t...

Page 122: ...improper maintenance bypassing of the solid state switch A bypass breaker cannot be closed unless the solid state switch is connected to the same input source and only one bypass breaker can be closed...

Page 123: ...ed non SELV and ESD protected to 15kV air discharge The con nector is a 6 Pin MTA plug with connections shown below A DB9 male connector is added and connected parallel to the 6 position header It is...

Page 124: ...isplay unit and 14 2 3 Maintenance Bypass on page 108 for instructions using the LED units 15 2 13 Fuseless Design All Liebert STS2 units are fuseless and are UL rated for use with upstream circuit br...

Page 125: ...2 has shorted Transferring between sources has been inhibited Press SILENCE on the touch screen to turn off the audible alarm if so configured If you are accessing the Liebert STS2 system from a termi...

Page 126: ...monitored Contact Liebert for technical support at 1 800 LIEBERT 800 543 2378 Press SILENCE on the touch screen to turn off the audible alarm if so configured If you are accessing the Liebert STS2 sy...

Page 127: ...so configured 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 This event was written to the Event Log if so config...

Page 128: ...3 2378 Press SILENCE on the touch screen to turn off the audible alarm if so configured If you are accessing the Liebert STS2 system from a terminal type SH and press RETURN on your keyboard to turn o...

Page 129: ...he Liebert STS2 system from a terminal type SH and press RETURN on your keyboard to turn off the audible alarm Contact Liebert for technical support at 1 800 LIEBERT 800 543 2378 This event was writte...

Page 130: ...are accessing the Liebert STS2 system from a terminal type CA and press RETURN on your keyboard S2 CURR SENSE FAIL Source 2 Current Sense Failure The module monitoring the current from Source 2 has f...

Page 131: ...f so configured 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 Contact Liebert for technical support at 1 800 LIEB...

Page 132: ...udible alarm if so configured 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 Contact Liebert for technical support...

Page 133: ...e alarm if so configured 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 alarm is latched and must be reset aft...

Page 134: ...f the audible alarm if so configured 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 This event has been written to...

Page 135: ...set points configured under the User Settings An S2 Fail alarm was also issued and source transfer has been inhibited The load of the Liebert STS2 has been transferred to Source 1 Press SILENCE on the...

Page 136: ...SILENCE on the touch screen to turn off the audible alarm if so configured If you are accessing the Liebert STS2 system from a terminal type SH and press RETURN on your keyboard to turn off the audib...

Page 137: ...f so configured 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 This event and the system status surrounding it hav...

Page 138: ...sfers from the preferred source to the alternate source in the last five minutes As a result automatic retransfers back to the preferred source is now disabled To clear this alarm condition assign the...

Page 139: ...odem if so configured If configured to be a latching alarm press RESET on the display If you are accessing the unit from a terminal type CA and press RETURN on your keyboard CB5 S1 BYP CLOSED Circuit...

Page 140: ...f Source 1 Transferring to Source 1 has been inhibited Press SILENCE on the touch screen to turn off the audible alarm if so configured If you are accessing the Liebert STS2 system from a terminal typ...

Page 141: ...History Logs were not already full This event was also written to the Event Log if so configured Press SILENCE on the touch screen to turn off the audible alarm if so configured If you are accessing...

Page 142: ...ress RESET on the display If you are accessing the unit from a terminal type CA and press RETURN on your keyboard INPUT CONTACT 4 Input Contact Isolator 4 Occurrence of the indicated external event ha...

Page 143: ...alarm if so configured 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 with its assigned name was written...

Page 144: ...arm press RESET on the display If you are accessing the unit from a terminal type CA and press RETURN on your keyboard TIME REPROGRAMMED System Time Reprogrammed The system s time setting has been upd...

Page 145: ...terminal type CA and press RETURN on your keyboard HIST LOGS FULL History Logs Full The history buffer has reached its capacity for both history logs No further history logs can be written until the l...

Page 146: ...lay unit see 10 2 Manual Transfer Preferred Source Selection on page 66 For an LED equipped unit see 14 2 2 Manual Transfer Preferred Source Selection on page 106 17 3 Changing the Air Filter A standa...

Page 147: ...ventive maintenance plans and service contracts For repair or maintenance service outside the 48 contiguous states contact Liebert Services if avail able in your area For areas not covered by Liebert...

Page 148: ...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 option installed list the settings below for fut...

Page 149: ...Maintenance 141 Channel 8 Channel 9 Channel 10 PRB Notes...

Page 150: ...uts to be routed through the static transfer switch s alarm net work See 6 4 Input Contact Isolator Board for more information on the ICI If your Liebert STS2 has the ICI option installed list the set...

Page 151: ......

Page 152: ...ation All names referred to are trademarks or registered trademarks of their respective owners Technical Support Service Web Site www liebert com Monitoring 800 222 5877 monitoring emersonnetworkpower...

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