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1. C F 00 no out 01 bypass C F 10 inverter 2 3 C F 0 hold 1 3 F 0 hold 03 Alarm A C F Rectifier fault C F Rectifier over temperature 2 3 C F Inverter over temperature 1 3 F Rectifier over current C F Assistant supply 1 fault C F Assistant supply 2 fault 2 3 C F Input SCR fault 1 3 F Discharge SCR fault C F Charge SCR fault C F Fan fault 2 3 C F Fan supply fault 1 3 F BUS over voltage C F BUS lower voltage C F BUS voltage of P N different 2 3 C F Phases wrong 1 3 F Soft start fault Cc F N loss C F Battery on the contrary 2 3 C F No battery 1 3 F P charge fault C F N charge fault C F Battery voltage lower 2 3 C F Battery voltage higher 1 3 F Pre alert for battery low 32 VFI KT Series User Manual C F Input frequency over limit C F Input voltage over limit 2 3 C F O hold 1 3 F 0 hold 04 Alarm B C F Inverter fault C F Bridge cross of inverter 2 3 C F Invert SCR short circuit 1 3 F Invert SCR open circuit C F Bypass SCR short circuit C F Bypass SCR open circuit 2 3 C F CAN communication fault 1 3 F Parallel current not equal C F Bypass phase wrong C F Sync fault 2 3 C F
2. 25 VFI KT Series User Manual Relay contact specifications Maximum switched voltage Parameter Value 277 Va c or 30 Vd c Typical switched voltage 5 to 12 Vd c Maximum switched current NO 10A NC 3A Maximum switched power NO 1400 VA 150 W NC 850 VA 90 W Reverse voltage Vr Opto coupler input specifications used for remote shutdown Parameter Value 5 Vd c Forward input voltage 30 Vd c max 5 to 12 Vd c typical Forward current 25 mA max 16 mA typical Pulse forward current lfp 1 A 100 us pulse 100 pps To connect to the relay card Pin 1 000000000 Pin 107 Figure 8 Relay card connector viewed from connector side 1 On the rear of the UPS unscrew the card and slide it out completely or sufficient to access the terminal block Using the information in the tables above wire your signal cables to the terminal block Figure 8 Refit the card and secure it in place with the cover plate 26 VFI KT Series User Manual Appendix 2 Parallel board signals The parallel board has three sets of signals CAN bus DB9 connectors These must be connected as described in Wiring units in parallel on page 12 LBS Load Bus Synchronisation connectors These may be used for a particular system configuration as described below Optional dry contact relay signals described below
3. Output Output type Single phase L N and E Output precision 1 0 Voltage distortion THD lt 2 with 100 linear load lt 5 with 100 non linear load Rated voltage 220 230 240Va c Frequency precision 0 1 Frequency 50 Hz 60 Hz Frequency tracking speed 1 Hz s VFI KT Series User Manual Overload 105 to 110 1 hr 110 to 125 10 min 125 to 150 1 min 2150 200 ms Overload for bypass 125 Crest factor 3 1 Efficiency in normal mode 290 Efficiency in battery mode 281 Efficiency of inverter 290 Dynamic response 5 0 20 ms DC component lt 500 mV Switch time Between normal mode and 0 ms battery mode Between inverter and bypass 0 ms unlock lt 15 ms 50 Hz lt 13 33 ms 60 Hz Parallel equal current 1 1 lt 8 N 1 lt 10 Safety and EM Safety IEC62040 1 GB4943 Isolation resistance gt 2 MQ 500 Vd c Isolation voltage 2 820 Vd c lt 3 5mA 1 min EMC Conduction IEC 62040 2 Radiation IEC 62040 2 Harmonic IEC 62040 2 EMS IEC 62040 2 Surge IEC60664 1 1 2 50 us 8 20 us 6 kV 3 kA Reliability MTBF 250 000 h 1 1 400 000 h MTTR 30 min 29 VFI KT Series User Manual Mechanical Height mm 655 Width mm 250 Depth mm 590 Net weight VFI6KT 62kg VFI10KT 64 kg Audible noise lt 55dB 1m Colour B
4. Inverter On when the UPS is supplying power The LED flashes when the inverter is overloaded Battery On when the power is supplied from the battery The LED flashes if the battery is low or disconnected Mains On when mains in present and within limits The LED flashes if the mains is outside its normal range Fault On when there is any type of fault Bypass On when the UPS is in Bypass Mode The following table describes the button functions Button Definition ON Press and hold for 1 s to turn on the inverter when in battery mode or bypass mode OFF Press and hold for 1 s to turn off the inverter and put the unit into bypass mode Ent Press to confirm an operation or enter a lower menu level Esc Press to cancel an operation or return to the previous menu level lt Press to select another menu item or change a parameter gt Press to select another menu item or change a parameter VFI KT Series User Manual Navigating the system menu 1 The main interface is displayed when the power is connected or the system is cold started 10 0KVA 2 Press or gt The display will change to the basic status interface MODE NOR Battery 9Ah Vin 238V 50Hz Vout 230V 50Hz 3 Press ENT to access the main menu FIGURE STATUS SETTING 4 An arrow icon appears and the menu can be traversed using the lt and gt buttons Use ENT to sele
5. LBS Load Bus Synchronisation It is possible to synchronise the output of two separate paralleled systems where each system can consist of up to 4 paralleled units It is only necessary to connect UPS number 1 of each system To do this connect the LBS1 pink connector of system A to the LBS2 green connector of system B The LBS connectors are 3 5 mm 3 pole jack sockets Dry contact relay signals To wire to the signals you will need A Molex connector part no 39 01 2120 94V 2 or 39 01 2125 94V 0 Crimps part no 39 00 0039 As an option you may want to fit a strain relief part no 15 04 0345 94V 2 Connections Pin no Signal name Description 1 12V Provides a 12 V 100 mA isolated supply 2 GND Common return 0 V for the 12 V supply and relays This is not connected to the chassis 3 Remote ON Connect to 12V to turn on the UPS pulse contact 4 Remote OFF Connect to 12V to turn off the UPS pulse contact 5 EPO Emergency power off connect to 12V for complete power off pulse contact 6 BAT_T4 Over temperature switch on battery 4 Feed 12 V via the switch when the battery temperature is exceeded 7 BAT_T1 Over temperature switch on battery 1 Feed 12 V via the switch when the battery temperature is exceeded 8 BAT_T2 Over temperature switch on battery 2 Feed 12 V via the switch when the battery temperature is exceeded 9 BP C Anti backfeed relay common 10 BP O Anti b
6. 4 a c fail signal Figure 6 DB9 socket pin outs 9 looking at the socket on the UPS turn off signal apply 5 V to 12 Vd c for 2 s D VFI KT Series User Manual SNMP card advanced monitoring and control If your unit is fitted with the optional SNMP card located in the Intelligent Slot on the rear panel connect itto your computer with a network cable see Figure 7 For instruction on how to operate the SNMP card refer to the documentation on the supplied CD Relay card advanced monitoring and control If your unit has been specified and fitted with the optional relay card located in the Intelligent Slot on the rear panel you have access to more advanced monitoring and control functionality via a set of dry contacts and a single opto coupled input Connections Descriptio Contact status Additional fault information 1 Mains out of limits closed on 2 Battery low open off 3 Battery low closed on 4 Bypass output closed on 5 Internal failure closed on Rectifier fault inverter fault and shutdown over temperature and shutdown short circuit and shutdown 6 Inverter output closed on 7 System alarm closed on Rectifier fault inverter fault and shutdown over temperature and shutdown short circuit and shutdown 8 Relay common GND 9 Remote shutdown V see opto specification below 10 Remote shutdown 0 V not the same as relay common
7. UPS depending on the type of generator used A Caution Ensure that the neutral line from the generator is permanently connected to the mains neutral line Do not use an MCB or any other type of switch in this line Circuit breaker and cable sizes Use the following sizes of circuit breakers and cables to connect the UPS between mains power and the load Battery breaker Battery Input and output Breaker Input output and A breaker breakers A type battery cable sizes type mm VFI6KT Ge MEER C40 C63 MCB 6 10 AWG VFI10KT 50 MCCB C63 C80 MCB 10 8 AWG type of breaker is not rated for the d c battery voltage Instead use an MCCB breaker that is Caution When installing external battery packs do not use an MCB breaker in the battery line as this rated for the d c battery voltage and the battery short circuit current breaking capacity Unpacking the UPS To unpack the UPS 1 Cut the two straps securing the packing box to the pallet and remove the packing box by lifting it up and over the UPS 2 Remove and retain the documentation CD and leads from the top of the UPS Dispose of packets of desiccant correctly 4 Move the UPS off the pallet WARNING A UNITS CAN WEIGH UP TO 80 KG TO PREVENT THE UPS FROM FALLING DO NOT LEAN IT WHEN MOVING IT OFF THE PALLET 5 Check the appearance of the UPS to see if it is damaged If any damage is found do not switch on the UPS and contact Power Ins
8. such as input output voltage frequency load and unit temperature Network power management can be achieved by using UPS monitoring software m A hot plug input output and maintenance bypass switch assembly ensures power to the load is maintained if you need to service or repair a single unit Where units are used in parallel an external maintenance bypass switch must be used as the built in bypass switch is only rated for the current of a single UPS VFI KT Series User Manual Installation Siting considerations Before unpacking and installing the unit consider the following DO NOT expose the UPS to high temperatures water ingress flammable or corrosive gas dust direct sunlight or explosives Locate the UPS indoors on a level surface as close as possible to the equipment it will be powering to minimise cable voltage drops Allow enough spare cable to move the UPS and access the rear and side panels during servicing Maintain a gap of at least 20 cm from walls or other equipment and ensure the ventilation holes slots at the front and rear of the units are not obstructed For maximum battery life and improved product reliability ensure cool air is available at the front of the unit As an approximation battery life is halved for every 10 C rise in temperature Wiring considerations To ensure a safe installation please follow these instructions and the local electrical code of the area or country in which you a
9. types of equipment for example computer centres network management centres analytical equipment and telecommunication systems Product range The VFI KT series is available in 6KVA and 10KVA models VFI KT Series User Manual System block diagram The UPS can be installed and operated as a single unit or it can be operated with other units of the same type in parallel N 1 redundant mode for additional reliability or in a parallel capacity mode for increased output rating To operate in parallel units must be specified and purchased with a factory fitted parallel kit Figure 1 is a functional block diagram representing a single UPS In cases where it is not possible to meet the hold up time with an internal battery an external battery pack can be added Maintenance switch Bypass FM Inverter i AC input AC output switch Figure 1 Single unit block diagram Features VFI KT units have an intelligent online sine waye output with power factor correction High frequency double conversion and a wide input voltage range ensure continuous output for areas with poor power supply regulation DSP technology for digital control ensures high reliability circuit protection and self diagnostics in the unlikely event of a fault Intelligent digital battery management extends battery life and ensures optimum performance An LCD panel and LED indicators clearly display the system status and system parameters
10. unit to the green RS485 socket of the next unit and so on until all units are connected in a daisy chain Do not connect the units in a loop Note Do not confuse the RS485 sockets with the LBS sockets on the parallel cards RS485 3 5 mm sockets 77 gt o O S g S 0 oi H Oll H eo P UPS 1 UPS 2 UPS 3 VFI KT Series User Manual Operation Working modes The UPS has four distinct modes of operation m On line mode Bypass mode Battery mode m ECO mode Each operating mode is described below On Line mode This is the default mode of operation in which the load is supplied via the inverter when the a c input and load are within their normal ranges The battery is float charged in this mode During fault conditions the UPS automatically switches to either bypass mode or battery mode without interruption to the load Bypass mode In bypass mode the load is supplied directly from the a c mains input and the battery is charged The UPS switches to bypass mode when any of the following conditions occur An output overload the unit beeps twice every second indicating that the load must be reduced to within its normal range as soon as possible Once the overload is removed the inverter re starts after a 5 minute delay If the UPS is overloaded too many times in any one hour it will eventually remain in bypass mode The UPS is too hot the UPS reverts to on line
11. Bypass over track 1 3 F Bypass over protect C F IGBT over current C F Fuse fault 2 3 C F Parallel cable fault 1 3 F Parallel relay fault C F LBS unlook C F Initialization fault 2 3 C F Can t start 1 3 F Overload C F Parallel overload C F DC component over limit 2 3 C F Bypass over current 1 3 F Feedback protect 33 POWER INSPIRED LTD Units 5 7 High Point Riding Road Brackley NN13 7BH UK info powerinspired com www powerinspired com 44 0 1280 811180 MAN VFI KT REV2
12. POWER IT NI User Manual VFI KT Series UPS VFI6KT VFITOKT POWER INSPIRED LTD Units 5 7 High Point Riding Road Brackley NN13 7BH UK info powerinspired com www powerinspired com 44 0 1280 811180 MAN VFI KT REV2 Power Inspired Ltd User Manual Thank you for purchasing the Power Inspired VFI KT series of UPS Please read this manual before use and installation The information contained herein in subject to change without notice Important Notes Please contact Power Inspired if you intend to use the UPS in an application that has an impact on human life such as Life Support Equipment Critical escape routes such as elevators or fire doors If using this unit in conjunction with a generator itis suggested the capacity of the generator should be in excess of 30 of the capacity of the loads the rating of the generator should be 1 5 to 2x the capacity of the UPS VFI KT Series User Manual EE 5 EMO E E Ehe 5 Warning SyMbDO S usara bai Rroduetdeecrtpton eeeegeegEegeSEEEESEENESENSEE A 6 ele le ue EE 6 Productrange tii add bea bie 6 System leed grenge ge ii dia aid 7 Features iia as 7 Al a ais 8 Siting consideration S nesis ies a A 8 Wiring Considerations iii bis 8 Operation from A Generator TTT 9 Circuit breaker and cable Sizes iia adi a 9 Unpacking the UPS ui ie di diia iia 9 Rear Ee E RE EE 10 WIIG TRONS PS aie cc cers cers a A A dane a pete ae te 11 Wiring units in parallel 12 Op
13. RAAKAA NANA 28 EROS 28 Mechanical servici A A 30 Appendix 4 Optional equipment cceeceeeeeecceeceeeeeeeeeeeseeeeeeeeneessneeeee saeeeeeensesssseeeeseneeseseeees KEEN 30 Appendix 5 UPS alarm tables inician escasa 31 VFI KT Series User Manual Safety WARNING THIS UPS IS CLASSED AS PLUGGABLE TYPE B OR PERMANENTLY CONNECTED EQUIPMENT AND MUST BE INSTALLED COMMISSIONED AND A MAINTAINED BY A QUALIFIED ELECTRICIAN AN APPROPIATE AND READILY ACCESIBLE DISCONNECT DEVICE MUST BE INCORPORATED INTO THE FIXED SUPPLY WIRING TO THE UPS There are dangerous voltages and high temperatures inside the UPS During installation operation and maintenance please abide by local safety instructions regulations and laws Failure to do so may result in injury to personnel or damage to equipment Safety instructions in this manual are supplementary to local safety instructions Power Inspired does not accept any liability caused as a result of failure to follow safety instructions Please note the following Do not operate the UPS in an environment or application outside of that detailed in the user manual Do not exceed rated load of UPS and ensure it operates in a dry well ventilated location away from any area or situation in which there is a risk of fire such as direct sunlight or other sources of heat Under no circumstances open the UPS as there are no user serviceable parts There are high capacity batteries inside and other electr
14. YTE INSIDE IS HARMFUL TO SKIN AND EYES External battery change Caution We strongly recommend you switch off the whole UPS when you need to change an external battery group Visual check Ensure there is adequate ventilation to maintain the UPS at the correct temperature UPS status check Check the following m Ensure there are no faults or alarms indicated m If the UPS is working in bypass mode investigate the cause m f the UPS is working in battery mode make sure it is normal if not investigate Function check Perform the following function checking every 6 months 1 Press the OFF button to ensure the buzzer indicators and LCD are operating normally 22 VFI KT Series User Manual N Press the ON button Check the indicators LCD and UPS inverter and ensure they are working normally When the UPS is working in on line mode perform a battery test see Command menu items on page 20 Troubleshooting Before contacting Power Isnpired try to solve your problem using the information in the following table If you need to contact us make sure you have the model number and serial number of your UPS No Problem description Probable causes Solution 1 LCD off and no self diagnosis a Input power absent Use a multimeter to check whether b Low input the input voltage is normal 2 AC normal but AC indicator off a Input circuit breaker off a Switch on input brea
15. ackfeed relay normally closed To prevent the input being energised by backfeeding in the event of an internal failure connect this signal to an external circuit breaker trip 11 BP S Anti backfeed relay normally open To prevent the input being energised by backfeeding in the event of an internal failure connect this signal to an external circuit breaker trip 12 BAT_T3 Over temperature switch on battery 3 Feed 12 V via the switch when the battery temperature is exceeded 27 VFI KT Series User Manual Appendix 3 Specifications Electrical Model VFI6KT VFMOKT Capacity 6 kVA 5 4 kW 0 9 pf 10 kVA 9 kW 0 9 pf Input Power factor gt 0 99 Rated voltage nominal 220 230 240 Va c Rated frequency 50 Hz or 60 Hz Voltage range 120 to 276 Va c Maximum input voltage 320 Va c 1 hr Frequency range 45 55 64 66 Hz Bypass voltage range max 10 15 or 20 default 20 min 20 30 or 45 default 45 Bypass frequency range 1 12 4 5 10 THDI 3 100 linear load input THDV lt 1 5 100 non linear load input THDV lt 1 Battery Number of 12 V batteries 16 18 or 20 batteries in series centre tapped Battery type VRLA Charge model Boost charge or float charge auto switch Charge time Boost charge up to 20 hr max Charge current A 1A
16. ara ii tai 14 Working Bue EE 14 EE EE 14 Bypass MO is A et ie ae A ie is eRe 14 Battery MOS ia A A a A A A A 14 EE EK 14 Belole oi e M Oei a ee 15 switching On the UPS iii A ee ees 15 Swit hingoff the UPS uan dada ii a EE AR AEEA A beep EES 16 Swapping out a UPS on alive system 16 Front panel controls and indicators non ncnnnnonnnnnnnnn ceeeeseeseeseecseeseecsessaeeaee tees 17 Navigating the system mem 18 FIgure Mentes ci edd ee RER 18 StatusiMenu items miii add lid abia 18 Setting men LEE 19 LCD display messages 000 ii A ia 21 MaintemanCe sniaicvccssnnannnnwscasestnes ienmceccontccneenisaustdunternenanl Snubanmaicensnniceanevccdnnaesgn E aaaea Raana aaa SE 22 EE 22 A NA 22 Extemal battery change TE 22 VIER A A A A 22 UPS Salus Ch lkiienircnanaaa a a dica 22 Function Check cios aa 22 VFI KT Series User Manual Troubleshooting ere cccceccccccceseceeeeceitataniectinesective cobtessuutedethivs EE E Eaa a 23 Appendix 1 Signals OPtlONS imicicciccc ala dais 24 RS232 Ee en vi id E A Ad A N 24 Contact closure basic monitoring and contra 24 SNMP card advanced monitoring and contrat 25 Relay card advanced monitoring and contrcl nn nnnannnnnnnnn ennrnncranr rana 25 Appendix 2 Parallel board signals ooooccccccccnonnnnnnncnnncnencnnncnnnnnnnnnnnnnnnnnnnnn errrrrrrnn rra enn 27 LBS Load Bus SynchroniSatiOn urraca EE 27 Drycontact E Ee EE 27 Appendix 3 Specifications ees ekek ek cee cece iii lion ERANA
17. close or open 2i VFI KT Series User Manual Maintenance an At normal room ambient temperature the fans will operate continuously for 20 000 to 40 000 hours Increased ambient temperatures will shorten this lifetime Periodically ensure that there is air is blowing out of the rear of the unit Battery For units with external batteries we recommend the use of sealed lead acid maintenance free batteries Units with internal batteries are fitted with this same type of battery Battery life depends on the ambient temperature and the number of discharge charge cycles Battery life is shortened with high ambient temperature and deep discharges To maximise the life of your batteries maintain them as follows Maintain the ambient temperature in the range 15 to 25 C Avoid discharge currents of less than 10 of full load current Do not operate the UPS in battery mode continuously for more than the specified autonomy hold up time Charge the battery for at least 12 hours every 3 months if it has not been used If the ambient temperature is higher than 25 C charge the battery every 2 months Maintain external batteries at least once a year If the backup time has significantly reduced or a battery fault is displayed on the LCD screen contact Power Inspired to find out if the batteries need replacing WARNING A DON T SHORT CIRCUIT THE BATTERY AS IT CAN CAUSE A FIRE DON T OPEN THE BATTERY AS THE ELECTROL
18. ct or ESC to return to the previous menu Note The values shown below are examples only The values in your system are likely to be different These menu items provide UPS operating information only FIGURE FIGURE FIGURE FIGURE Mains Output Output Invert 238 0V 50 0Hz 230 0V 0 0A OKW OKVA 230 0V 50 0Hz 50 0Hz Load 0 FIGURE FIGURE FIGURE FIGURE P Battery N Battery BUS Parallel 110V 0 6A 110V 0 6A 370V 370V ID 1 116min 90 116min 90 CAP Dour P Amount 0 FIGURE Temperature C PFC 27 INV 27 ENV 27 VFI KT Series User Manual Status menu items These menu items provide UPS system information only STATUS STATUS Code 5 Version Fault 0 0 0 0 V03B05D002 Model 10KVA Setting menu items These menu items allow you to change the UPS settings SETTING Mode NOR Batt Num 16 Batt cap 9Ah You can change the setting by navigating to the required section using the lt and gt buttons and pressing ENT Change to ECO mode by navigating to MODE and cycling through the options until ECO is displayed Confirm by pressing ENT SETTING Mode ECO Batt Num 16 Batt cap 9Ah The next screen allows you to adjust the output voltage and frequency The options are 220 230 and 240V 50 or 60Hz SETTING V Level 230V F Levle 50Hz The next screen allows you to adjust the input voltage trip points at wh
19. e unit remove the bypass box 4 screws Remove the gland box cover 4 Remove the terminal cover 5 Feed all the cables through the gland box cover A Caution Ring crimps are required on all wires to ensure the connections are secure Note Complete steps 6 and 7 in the order shown or you won t be able to access the earth terminals 6 Wire the input and output earth cables to the UPS bypass box terminals Ensure that both connections are made 7 Wire the input output and battery cables to the UPS bypass box terminals Lo BAT BATN BAT HT gu Noli Ge Dr bo F External battery WARNING A CHECK THAT ALL CABLES ARE WIRED TO THE CORRECT TERMINALS DO NOT REVERSE THE INPUT LIVE AND NEUTRAL CONNECTIONS OR THE POLARITY OF ANY OF THE BATTERY WIRES Refit all the covers and ensure all cable glands if fitted are fully tightened Refit the bypass box to the UPS 11 VFI KT Series User Manual 10 If your unit has an SNMP or relay contact card fitted or you plan to use the RS232 port or other standard signals see Appendix 1 Signals options on page 24 Wiring units in parallel You can operate 2 3 or 4 units in parallel Each unit must be ordered with a factory fitted parallel board option Caution If you are using units with external batteries each unit requires its own battery bank A You cannot use a common battery bank for more than one unit working in parallel mode When operating uni
20. he fan start up The model number and rating is initially displayed on the front panel LCD After a few seconds this changes to system information Mode NOR Battery 9AH 10KVA Vin 230V 50Hz Vout 230V 50Hz At the same time that the fan starts the Bypass and Output LEDs are illuminated After a few seconds the Mains and Inverter LEDs are illuminated and the Bypass LED goes out see Figure 4 on page 17 In this state your unit is working correctly and delivering power to the load There is no need to alter any settings 15 VFI KT Series User Manual Switching off the UPS A Caution All power to the load will be removed when you follow this procedure To switch off the UPS 1 2 On the front panel see Figure 4 on page 17 press OFF to place the unit in bypass mode When prompted by the LCD press Ent to confirm your action The Bypass LED turns on and the Inverter LED turns off On the rear panel turn off the unit main breaker After a few seconds the unit shuts down the fan stops and LCD and LEDs turn off Swapping out a UPS on a live system VFI KT units are fitted with a bypass box that allows you to swap a UPS without the need to do any wiring Note Always use a PH2 Phillips screwdriver and not a pozidrive PZ screwdriver To exchange a UPS while maintaining the load 1 2 ad o OON OAS On the front panel press OFF to switch the unit to bypass mode When p
21. ich the UPS will revert to battery operation SETTING V upper 15 V lower 45 The upper voltage options are 10 15 or 20 The lower voltage options are 20 30 or 45 19 20 VFI KT Series User Manual Setting menu items continued The next screen allows you to enable or disable the buzzer SETTING Buzzer Enable The next screen allows you to perform a series of battery tests SETTING BatTest Off The options are Off Test1 Test2 and Test3 The next screen allows you to configure the unit for parallel operation SETTING Parallel Set ID 1 P Amount 2 P Redund 0 Note that each unit in a parallel system needs to have a parallel card fitted and a common input and output busbar VFI KT Series User Manual LCD display messages Display Meaning CurState Init Initialisation No Out No output Bypass UPS in bypass mode Mains Rectifier working Battery Battery invert Testing Battery test in progress Startin Starting CurState ECO UPS running in ECO power saving mode CurState EPO Emergency Power OFF mode CurState M Byp UPS in maintenance bypass mode CurState Fault UPS fault Battery Charging Battery float charging Battery Boost Battery boost charging Invter ON Invter OFF Inverter working or not Inver Master Master of multi UPS system SWMB ON SWMB OFF Maintenance switch
22. ker UPS is in battery mode b Input power connection b Check the connection and redo problem 3 No alarm but no output Output connection problem Check the connection and redo 4 UPS doesn t start after pressing a ON button press too short a Press and hold ON button for 1s ON button b Overload b Disconnect all loads and restart 5 AC indicator flashing Input AC is beyond normal range Monitor the backup time if the UPS is in battery mode 6 Buzzer beeps twice every UPS overload Reduce the load on the UPS second LCD displays output overload 7 Fault indicator on LCD displays a Battery circuit breaker off or a Switch on the breaker check the battery fault poor connection battery connections b Reverse battery connection b Check the battery polarity c Battery defective c Contact Power Inspired 8 Fault indicator on LCD displays Charger defective Contact Power Inspired charger fault 9 Abnormal backup time a Battery not fully charged a Charge battery for 8 hours when b Battery defective AC is normal then re test the backup time b Contact Power Inspired 10 Long beeps fault indicator on and UPS is too hot a In the status menu check for an UPS switches to bypass mode over temperature warning b Check that there is airflow from the fans c Ensure there are no airflow blockages d Wait until the UPS has cooled down and try to restart it 11 Long beep fault indicator on Output short circuit Remove the short circuit and
23. lack Display LCD and LED Ingress protection IP20 Appendix 4 Optional equipment The following items are available as options for the UPS External Battery PAck Dry contact card SNMP card Parallel card factory fitted only VFI KT Series User Manual Appendix 5 UPS alarm tables 01 Running 0x01 No output 0x02 On bypass 0x03 Online 0x04 On battery 0x05 Battery self testing 0x06 Inverter starting 0x07 ECO mode 0x08 EPO 0x09 Maintenance bypass Ox0A Fault 02 Status C F EPO 4 5 6 7 C F Rectifier working 2 3 6 7 Cc F Rectifier limit 1 3 5 7 F Input normal C F Input 1 main 0 battery 4 5 6 7 C F Charging 2 3 6 7 C F P battery boost charging 1 3 5 7 F N battery boost charging C F Battery self testing 4 15 6 7 C F 00 shutdown 01 soft start 2 3 6 7 C F 10 no output 11 output normal 1 3 5 7 F Alarm for switch delay C F Capacity not enough 4 15 6 7 C F Overload to shutdown 2 3 6 7 C F Overload to bypass 1 3 5 7 F Parallel to bypass C F Switch times up to limit 4 i5 6 7 C F Master 2 3 6 7 C F MB switch closed 1 3 5 7 F Input switch closed 31 VFI KT Series User Manual
24. mode as soon as the unit temperature returns to normal The UPS fails a serious fault has occurred within the UPS that must be repaired The UPS is turned off In bypass mode the Inverter LED is off and the Bypass LED is on Battery mode In battery mode the load is supplied from the battery via the inverter the UPS beeps every 3 s and the rectifier and charger are turned off The UPS switches to battery mode when there is no a c input or the a c input is outside its normal range On the front panel the Mains LED is off and the Battery LED is on When the battery reaches a preset low limit the system gives a low battery voltage alarm signal the LCD provides a low battery alarm and the UPS beeps every second Eventually the UPS shuts down to prevent damage to the batteries When the a c mains is restored the inverter starts automatically and the UPS reverts to on line mode If you turn off the UPS in battery mode it restarts in bypass mode and you must press the ON button to start the inverter ECO mode Your UPS may be set to operate in ECO mode instead of on line mode In ECO mode the load is supplied via the bypass circuit and not the inverter allowing the UPS to work at higher efficiency The battery is float charged in this mode If the a c input is lost or goes beyond its normal range the UPS automatically switches to battery mode however the transfer speed is slower than on line mode and may not be suitable for all a
25. onics that can cause electric shock If the UPS requires internal maintenance or battery replacement contact Power Inspired In pluggable type B applications the UPS must be switched off and isolated prior to removal of the AC mains input plug from the mains supply socket as detailed on the warning label fitted on the UPS The UPS mains input cable must be connected to an earthed mains supply for operator safety and EMC compliance If the UPS emits smoke turn off immediately the input circuit breaker at the back of the unit and if fitted the battery circuit breaker and contact Power Inspired EMC WARNING This is a product for commercial and industrial applications in the second environment A This is a category C2 UPS product In a residential environment this product may cause radio interference in which case the user may be required to take additional measures As stated in EN62040 2 2006 Warning symbols The safety symbols used in this manual are shown in table below They alert you to important safety information that you need to be aware of when installing operating and maintaining the UPS Safety Symbol ndication Attention Static discharge sensitive Electric shock Dep A Caution A caution describes a situation in which there is a risk of damage to equipment VFI KT Series User Manual Product description Applications This UPS series provides reliable AC backup power to various
26. pired 6 Check the packing list Contact Power Inspired if any of the accessories are missing VFI KT Series User Manual Rear panel layout Outlet Gland Plate Removable Bypass Module EPO Switch OOO On Off Switch RS232 Port Bypass Switch Cover USB Por Handle Fan SNMP Relay Card Slot Parallel Card Slo 10 VFI KT Series User Manual Wiring the UPS Before connecting the UPS read the siting considerations above and check you have selected breakers and cables with the correct ratings POSITION Caution If your system uses external batteries DO NOT mix batteries from different manufacturers or mix different types of batteries DO NOT use old and new batteries together WARNING A BEFORE ATTEMPTING TO WIRE THE UPS ENSURE ALL BREAKERS ARE IN THE OFF Note In addition to the normal tools required for electrical installation you will need a PH2 Phillips screwdriver to remove the UPS gland box and panels Do not use a pozidrive PZ screwdriver To connect the UPS to your system 1 If your system uses external batteries a Check that the number of 12 V blocks in each string positive and negative is equal and matches the number specified in your order b Measure the battery voltage The voltage should be approximately 192 Vd c for 16 batteries 216 Vd c for 18 batteries and 240 Vd c for 20 batteries 192Vdc 16 batteries is default 2 On the rear of th
27. pplications VFI KT Series User Manual Before switch on Before turning on the unit for the first time or after any wiring or battery changes 1 Read the section above on working modes 2 Check all the wiring 3 Check that the rated load does not exceed the rated output of the UPS 4 If the UPS is supplied by a generator check that the generator is correctly rated and wired see Operation from a generator on page 9 a Apply the wheel locks to prevent the UPS from moving Switching on the UPS Note lt is important to switch on your UPS as described below as damage may occur when supplying certain load types Caution When using the UPS for the first time charge the batteries for at least 8 hours as they may have lost charge during the time between production and installation To switch on your UPS 1 If your installation has an external bypass breaker ensure it is open If your installation has an external battery switch on the battery breaker Switch on the input breaker Fb o bh On the rear panel switch on the unit main breaker Note If switching on into a transformer load ensure the UPS is initially working in bypass mode before switching to on line mode 5 Switch on the output breaker Ideally it is best to apply the load gradually if this is possible Caution If the UPS input power is provided by a generator it is important to apply the load A gradually You should immediately hear t
28. re installing the equipment m f the UPS is to be supplied from a local transformer ensure the transformer kVA rating is at least 50 greater than the UPS output kVA rating m Use circuit breakers and cables with the correct rating see the next section Always fit an MCB between the mains supply live line only and the UPS input see Figure 2 A Caution Do not fit an MCB in the neutral line Because of the high leakage current permanently hard wire all the a c cables or use industrial connectors not domestic connectors m Use ring terminal crimps on the end of all cable conductors to ensure the connections are secure f using external batteries always fit a 3 pole MCCB with a suitable d c voltage rating and breaking capacity between the battery and the UPS see Figure 2 A Caution The UPS is designed to work with a centre tap battery only m Although it may not be absolutely necessary we recommend you fit an MCB between the UPS and the load to protect the output load and cables in the event of a fault see Figure 2 You may also wish to connect the UPS output to your load via a distribution unit PDU Suffix E units only Figure 2 Power cable wiring configuration for a single UPS VFI KT Series User Manual Operation from a generator As a guide we recommend that the load capacity should be less than 30 of the generator capacity and the generator rating should be 1 5 to 2 times the rating of the
29. restart LCD displays output short circuit the UPS 12 Long beeps fault indicator on Fault inside UPS Contact Power Inspired LCD displays rectifier fault inverter fault auxiliary power fault output fault 13 Abnormal sound or smell Fault inside UPS Shut down UPS immediately and contact Power Inspired VFI KT Series User Manual Appendix 1 Signals options RS232 serial port The VFI KT units are fitted with a standard RS232 serial port which can be used to Monitor the UPS power status Monitor the UPS alarm information Monitor the UPS running parameters Perform a battery test To enable RS232 control 1 Connect the UPS to your computer using the supplied RS232 cable 2 Load the supplied software onto your computer Connections between computer and UPS RS232 ports Computer UPS 6789 e RDX 2 TX3 TDX 3 gt RX2 GND 5 GND 5 Figure 5 RS232 serial port pin outs looking at the socket on the UPS D ee 12345 RS232 communication data format Baud rate 2400 bps Byte length 8bit End bit 1bit Parity check Null Contact closure basic monitoring and control The VFI KT units may have a contact closure option This provides access to a set of dry contacts giving you basic monitoring and control functionality The signal connections are as follows Pin number Function 6 7 8 9 1 battery low signal 2 signal common 0 V
30. rompted by the LCD press Ent to confirm your action The Bypass LED turns on and the Inverter LED turns off Access the rear panel and remove the screw that holds the maintenance breaker cover in place It is located just above the input breaker Turn on the maintenance breaker Turn off the UPS main breaker At this point power flows into and out of the bypass box only Remove the four screws that hold the bypass box in place and extract the box from the UPS Replace the UPS Slide the bypass box into the new UPS Turn on the new UPS s main breaker Ensure that the Mains and Bypass LEDs are illuminated This indicates that the UPS is working correctly Turn off the maintenance breaker and fasten its protective cover in place After a few seconds the UPS automatically switches to on line mode VFI KT Series User Manual Front panel controls and indicators The front panel controls and indicators are shown in Figure 4 Using the buttons LEDs and the menu structure displayed on the LCD panel you can m Check the status of the UPS m Check and make changes to the settings Note Your UPS is setup at the factory prior to delivery There is normally no reason to change any of the settings io Ee Fault Mains Im Inverter Output AR Figure 4 Front panel The following table describes the operation of the LED indicators LED Description Output On when the load is being supplied
31. ts in parallel you must not use the built in bypass as it is rated for one unit only If you need a bypass for the parallel system it must be wired as an external item WARNING A BEFORE ATTEMPTING TO WIRE THE UNITS ENSURE ALL BREAKERS ARE IN THE OFF POSITION To connect two or more units in parallel 1 Wire the power cables and optional signals as described above 2 Ifa system bypass is required wire in a separate MCB capable of carrying the total system load current as shown below This is not required if you have only two units working in N 1 mode where the load never exceed the rating of a single unit AC input Wrap around bypass UPS 1 UPS 2 switch AC output 3 On the parallel board of each UPS connect the CAN bus labelled Parallel 1 and Parallel 2 in a ring arrangement using the supplied RS232 cables as shown below Make sure you wire all CAN bus connectors and secure them in place using their captive screw locks g l lleIed Langg g 91Ie1ed L 9IIe ed Z 911e1ed S Ie ed UPS 1 UPS 2 UPS 3 parallel board parallel board parallel board 12 VFI KT Series User Manual 4 Locate a locking plate over each pair of connectors and secure in place This provides extra protection against accidental removal of a CAN bus cable O 5 Optional connection You can control and monitor all units using the RS232 port on one UPS To do this connect the pink RS485 socket of one

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