UPSPARALLEL with signal loop connection USER'S MANUAL
Contents
1. To restore the signal cable broken is necessary before switch off the UPS with panel message INTERNAL FAULT 10 OMNAO01 ANE GB REV00 pag 16 18 ON LINE MODE All the units are in NORMAL OPERATION mode The writing NORMAL OPERATING mode will appear on the display panel and at the bottom on the left a letter p will be shown or b letter for battery parallel a capital letter will appear if the unit isa MASTER a small letter will indicate a SLAVE unit In this mode the UPS shared the power load in equal percentage STAND BY ON MODE The power share between the UPS depend only on the length of the cables so the cable must respect the tule on the length showed in the connection paragraph STAND BY OFF MODE If predisposed on singular unit see user UPS manual In this mode the UPS shared the power load in equal percentage when the mains fall down STABILIZER MODE WITHOUT BATTERY In this mode the UPS shared the power load in equal percentage when it works in inverter mode BATTERY MODE One battery for each UPS Each unit draws power from its own battery When the autonomy time finish in a unit it will exclude itself The load will not supplied if the power shortage exceeds the autonomy time of the whole system When the power shortage is over the system will start automatically Every UPS recharge its battery Only one battery for all the UPS Every unity is fee2. UPS PARALLEL with signal loop connection USER S MANUAL Yos OMNAOOLANE GB REV00 ITDA 23 01 04 INDEX WARNING e E E sosvenseessedecavedvessSevssseensecevassosasdessuocccnucedsessonassesnsseduedeovaessenssoonensesaes 3 INTRODUCTION 4 INSTALLATION ss 4 lue UMEN Cs E M MR 4 eO D OL Od HS Peu 5 Signal connection oio eet e bee RS eR at t tee tasas tee dm tte E eei pese olt a D EHE REN 5 Firmware pdate e Re RARI eee eu e Eee pt Ne edite tet ba revistas n 5 Loop Connection ute Se RR Get e e ER e e tUe Ret ek rep RR De Re eoe bag 5 HOt Insertion o Rede s Ret teet AR ARR ES cierta RU t Md ELS 8 Hot DiSCot ection uio bea e ERE UL pe DE e EE ER ade tbe UR IRAM ERR dees 10 Power connection input output UPS AC sssssssssessesseseeeenener enne enne enne nne en rre n rne 11 Power connection Battery nee einne eerie ape eaaa an e a oa e pee ea apia re aE Eain eses 12 DIFFERENTIAL PROTECTION cc ssssccsscecccccesccccssccessscccsscccesccesescessscssesccssesccesssseeesessees 13 ADDITIONAL SECTIONING j sccccscesccesssccscscccesccccesccesssccssscccescccsescessssccsssccsescecsescesesssssesceees 13 EMERGENCY POWER OFF EPO CONNECT ION 0 0 csssccsscsssccscesccrcscccesccccesccesssseesseseesee 14 SPAR DUP Lr 14 VO ATOE I CTIDTTES UTI i H 15 Example ofFunctioning of the Loop Connection essere enne 15 ON LINE MO DE
3. GB REV00 pag 5 18 Example of signal connection between two UPS 1 2 x dB k o E E Connector 9 pole female F Connector 9 pole male G UPS PARALLEL CABLE X H UPS PARALLEL ADAPTER D 1 2 UPS in parallel Gar CN A Connector 9 pole female B Connector 9 pole male C UPS PARALLEL CABLE D UPS PARALLEL ADAPTER 1 2 3 UPS in parallel To connect more UPS is necessary only add the UPS PARALLEL CABLE Example of signal connection to use a single UPS configured in parallel A Connector 9 pole female B Connector 9 pole male Y C UPS PARALLEL CABLE D UPS PARALLEL ADAPTER C 1 UPS configured in parallel CN Note another way to use a single UPS configured in parallel is the following A Connector 9 pole female of the PARALLEL CONNECTORS B Connector 9 pole male of the PARALLEL CONNECTORS A B C MALE TERMINAL ir D FEMALE TERMINAL CIO 1 UPS D c lt OMNAO01 ANE GB REV00 pag 6 18 Note MALE TERMINAL and FEMALE TERMINAL are supplied with the UPS predisposed for parallel in the factory They are not supplied in the UPS PARALLEL KIT Specification to make the MALE and FEMALE TERMINAL MALE TERMINAL FEMALE TERMINAL Connector DB9 ma
4. units within one minute when the output load is full Procedures to be carried out Q close all the SWMB switches OMNAO001ANE GB REV00 pag 17 18 Q open all the SWIN SWOUT SWOUT and FBAT switches The current absorbed by the load will be equally shared by all the single by pass lines b maintenance on a single unit In order to carry out maintenance procedures on a single unit ex UPS1 please follow the following procedures Q open the SWOUT SWIN SWBY and FBAT switches If the operating UPS can feed the load of the system then the system will remain in normal operating mode and in the meantime it will be possible to carry out maintenance procedures on the UPSI In order to turn on the UPS1 again it is necessary to close the switches SWIN SWBY FBAT and SWOUT OMNAO01 ANE GB REV00 pag 18 18
5. Connect the load phase L2 only threephase to all the output UPS phase L2 of each UPS Connect the load phase L3 only threephase to all the output UPS phase L3 of each UPS Connect the load Neutral to all the output UPS Neutral of each UPS Under here is shown an example of a connection for the parallel for three units MAINS A NL1L2L3 T A Supply mains I B Input UPS terminal C Output UPS terminal NL1L213 NL1L2L3 NL1L213 IN B IN B IN B D Load i 1 2 3 UPS OUT C OUT C OUT C NL1L2L3 NL1L2L3 NL1L2L3 J NL1L2L3 D MAINS A A Supply mains B Input UPS terminal C Output UPS terminal D Load 1 2 3 UPS i 2 ay al a2 a3 cl c2 c3 Cable length IN B IN B IN B 1 2 3 OUT C OUT C OUT C c1 c2 c3 When carrying out the power connection of the UPS it is mandatory to respect the following indications to have a good power share in by pass operation the sum of the total length of the input and output cables must be the same for each unit Referring to the drawing it must be al c1 a2 c2 a34c3 N B If you want to connect a sectioning at the output of each UPS see the paragraph additional sectioning OMNAO001ANE GB REV00 pag 11 18 POWER CONNECTION BATTERY 1 Separate batte
6. FF A UPSPARALLEL ADAPTER CIR i i B UPS PARALLEL CABLE j a C UPS BYPASS CABLE Remove the UPS BYPASS CABLE between the two UPS PARALLEL CABLE Insert the new UPS instead of the UPS BYPASS CABLE Now you can turn on the UPS 3 UPS added A UPS PARALLEL ADAPTER B UPS PARALLEL CABLE Verify that the UPS run in normal operation and the system share the output power WARNING Don t make short circuit between the pin of the connector UPS PARALLEL ADAPTER UPS PARALLEL CABLE UPS BYPASS CABLE and UPS connector when you insert or remove the connection OMNAO01 ANE GB REV00 pag 8 18 Specification to make the UPS BYPASS CABLE Insulated multipolar cable screened with 7 wires of 24 AWG diameter capacity max 100pF m maximum length 20mm Cable UPS BYPASS CABLE SIDE A male DB9 SIDE B female DB9 pin 1 pin 1 pin 2 connected with a resistor 2 2KO 1W to the pin 6 pin 2 do not connect pin 3 pin 3 pin 4 do not connect pin 4 connected with pin 9 pin 5 pin 5 pin 6 pin 6 pin 7 pin 7 pin 8 pin 8 pin 9 pin 9 screen welded on the metal frame on both sides WARNING It is not possible to use more than one UPS BYPASS CABLE connected in series because the cable is not pin to pin OMNAO01 ANE GB REV00 pag 9 18 HoT DISCONNECTION With hot disconnection you don t need to turn off all the UPS if you want to remove a UPS
7. GB REV00 pag 15 18 Assume now that the signal cable between the ups and 3 will open SINGLE PARALLEL CONNECTION CABLE FAILURE A Connector 9 pole female B Connector 9 pole E V VJ us dnos IDRIS iil CABLE ea D UPS PARALLEL ADAPTER E Signal cable open 1 2 3 UPS in parallel UPS STATUS 1 Normal Operation Master unit with panel message Signal parallel cable fault 2 Normal Operation Slave unit with panel message Signal parallel cable fault 3 Normal Operation Slave unit with panel message Signal parallel cable fault Note In this situation the load is supplied correctly All the UPS are delivering power to the load Assume now that the signal cable between the ups 1 3 and 2 3 will open DOUBLE PARALLEL CONNECTION CABLE FAILURE A Connector 9 pole female B Connector 9 pole male C UPS PARALLEL CABLE DK Mii D UPS PARALLEL D ADAPTER E Signal cable open c7 GPs Se 1 2 3 UPS in parallel Eo UPS STATUS 1 Normal Operation Master unit with panel message Signal parallel cable fault 2 Normal Operation Slave unit with panel message Signal parallel cable fault 3 Disconnected mode TLI open SCR off Slave unit with panel message INTERNAL FAULT 10 Note In this situation the load is supplied correctly only by UPS 1 and 2
8. It s possible to connect UPS a great distance with particular cable Cable UPS PARALLEL CABLE SIDE A male DB9 SIDE B female DB9 pin 1 pin 1 pin 2 do not connect pin 3 pin 3 pin 4 pin 9 pin 5 pin 5 pin 6 pin 6 pin 7 pin 7 pin 8 pin 8 pin 9 do not connect screen welded on the metal frame on both sides WARNING It is not possible to use more than one UPS PARALLEL CONNECTION connected in series because the cable is not pin to pin FIRMWARE UPDATE All the UPS connected must have the same firmware release LOooP CONNECTION Turn off SWIN FBY SWBY FBAT and SWOUT Find the two DB9 connectors as showed in the user manual a male and a female called PARALLEL CONNECTORS A Connector 9 pole female of the PARALLEL CONNECTORS yh ws B Connector 9 pole male of the PARALLEL CONNECTORS C MALE TERMINAL D FEMALE TERMINAL OMD bus Remove the MALE TERMINAL and FEMALE TERMINAL that are inserted in the PARALLEL CONNECTORS Connect the adapter the female connector UPS SIDE of the UPS PARALLEL ADAPTER must be connected in the male connector of the UPS The male connector CABLE SIDE of the UPS PARALLEL ADAPTER must be connected in the female cable UPS PARALLEL CONNECTION Connect the other UPS unit with the cable UPS PARALLEL CONNECTION In aloop connection must be inserted only one UPS PARALLEL ADAPTER in all loop connection OMNAO01 ANE
9. Q The voltage between the corresponding input and output terminal of each UPS will be lt 2Vac In contrary case you must control the correctness of the connection Q After open SWMB C Turn on UPSI closing SWIN FBAT FBY SWBY and SWOUT Wait until on the dispay will appear NORMAL OPERATION message D Close SWIN SWBY and FBAT on the other UPS E Check that all the UPS in parallel are turn on F FOR FUNCTIONING WITH ONLY ONE BATTERY Check the second row of the display panel the X char Example type UPS X OUT YYY VA BATT YYY Ah 5 ON or OFF Note The UPS with X char B or P in capital letters is the master unit The X char on the master unit could be Q X B the parallel battery code is already inserted Insert only the value of the battery capacity see bellow Q X P is necessary to insert the battery parallel code push on the display panel the key 3 5 and the code 467123 to disable the battery parallel repeat the key sequence The UPS linked with the UPS in which you had inserted the code will configure automatic through the parallel signal cable on the UPS will appear the b char OMNAO0O1 ANE GB REV00 pag 14 18 Insert the value of the single battery capacity This operation must be make on the Master UPS The Master UPS will send to the other this information through the parallel signal cable G Close SWMB on the UPS1 and check that all the system go to by pass l
10. Ur io 17 STAND BY ON MODE sce 17 STAND BY ORF MODE vscccccescsescosasosescsensctcentcovsssosnansccnnceccassenasesncascscaserendesuasossecssuesdeswsonsseesesesdecseas 17 STABILIZER MODE WITHOUT BATTERY sseeeseeesoeesooesooesooesooesoossoosssoessosssosssosssoessosssesssesssese 17 BATTERY MODE op sosssscsusscatarssbsesvenssesescesesebesnsdeasccsereaseonssescssdensiecesteatessoosessesates ses 17 OVERLOAD penc 17 BY PASS FOR MAINTENANCE e ssesssesssesssesssesssecsseessoessoessoossocssoossoossoossoossoossoossoosssosssosssosessssos 17 WARNING Read carefully this manual before making any operation All the installation operations must be carried out exclusively from personal trained Use this manual with the UPS user manual The instructions in this manual are applicable only to modified UPS for parallel operation A standard machine not predisposed for the parallel is possible to be update across the parallel kit OMNAO01 ANE GB REV00 pag 3 18 INTRODUCTION The UPS can be connected in parallel in order to increase the reliability and the output power Up to 8 units can be connected in parallel It s advisable connect unit of the same power The applicable load in a system with more machines in parallel could be greater than the load sustainable from each single unit thanks of an automatic power share The increase in reliability can be achieved with condition that disconnecting a unit the other UPS can su
11. d from the common battery When the autonomy time is ended the UPS system stopped The load will not supplied if the power shortage exceeds the autonomy time of the whole system When the power shortage is over the system will start automatically Every UPS master and slave recharge the battery OVERLOAD Also in this mode the UPS share the overload in equal percentage The overload on a UPS if it continues longer than allowed causes its exclusion If the load to the whole system is not reduced the other units will be excluded and the entire system will switch on the by pass line Once the overload is eliminated all the units will automatically switch back to normal operating mode If the overload goes on the electronic protection on the by pass line turn off the by pass SCR If this happens the load will lost the power supply BY PASS FOR MAINTENANCE a maintenance of the entire system WARNING THAT OPERATION MUST NOT CARRY OUT If you turn on the SWMB switch the entire system will switch to by pass line And if all the switches are opened in order to carry out maintenance procedures all the power required by the load will go through the maintenance BY PASS LINE of the unit with SWMB close WARNING Both the maintenance and by pass line of each UPS is calibrated for the nominal power of each single unit In order to carry out the maintenance on all the UPS it is necessary to close all the SWMB switches of all the
12. erentials protection is not equal to zero B correct solution A N N 1 N N 2 N N 12 B UPS in parallel For the differential characteristics refer to the UPS manual ADDITIONAL SECTIONING In the case is wanted to predispose the plant to allow the removal of an unity without interrupting the service of the others it is necessary to insert two switches for every unity as suitable in figure Besides if it is wanted to perform the removal of an unity avoiding the commutation in by pass of the others it is had to predispose a special circuit that allows the by pass of the signals cable see Maintenance on single unity with cables removal paragraph MAINS 51 52 LOAD MAINS Supply mains T 23 LOAD Load S1 Input switch S1 59 S2 Output switch AUX Auxiliary of the output switch S2 2 Bj 1 2 UPS in parallel Tax For the positioning and the use of breakers in the positions 1 and 2 see the following rules Q The switch S1 will owe to be opened only when the respective UPS is extinguished Q The switch S2 must be provide an auxiliary contact open with switch open and closed with switch closed to electrically connect in series with the auxiliary contact present on the switch SWOUT of the UPS OMNAO01 ANE GB REV00 pag 13 18 EMERGENCY POWER OFF EPO CONNECTION To command all the UPS with the same EPO sw
13. in a UPS SYSTEM Example of hot disconnection 1 2 3 Turn off the UPS 3 that you want to disconnect M S TURN OFF noue Bo Bo A UPS PARALLEL ADAPTER B UPS PARALLEL CABLE 2 3 Remove the cables that connect the UPS disconnected S TURN OFF Bel NL Ill M S TURN OFF UP n 00 DJ A UPS PARALLEL ADAPTER B UPS PARALLEL CABLE 1 2 3 Connect instead of the UPS the UPS BYPASS CABLE between the two UPS PARALLEL CABLE A UPS PARALLEL ADAPTER B UPS PARALLEL CABLE C UPS BYPASS CABLE Bo Verify that the UPS run in normal operation and the system share the output power IWARNING do not remove the UPS PARALLEL ADAPTER OMNAO01 ANE GB REV00 pag 10 18 POWER CONNECTION INPUT OUTPUT UPS AC To find out the cross section area of the cables see the equipment manual The diameter of the cables of each UPS is related to the power of each single unit Connect the input of each UPS in the following way Connect the mains phase L1 to all the input UPS phase L1 of each UPS Connect the mains phase L2 only threephase to all the input UPS phase L2 of each UPS Connect the mains phase L3 only threephase to all the input UPS phase L3 of each UPS Connect the mains Neutral to all the input UPS Neutral of each UPS Connect the UPS output in the following way Connect the load phase L1 to all the output UPS phase L1 of each UPS
14. ine the by pass led on the unit 1 must blink while on the other ups must be turned fix open the SWMB Wait few seconds and check that the UPS1 goes in NORMAL OPERATION If the check is successful close SWOUT of all the units Put the block to padlock on all of the SWMB to block all in open position H Check that all the UPS are in NORMAL FUNCTION T Wait one minutes since the turn on of the last UPS and check that without load the output power showed on each unit is 109 L Turn on the output load wait one minutes and check the power share between each UPS is in the range of 10 Test of by pass operating Connect a load at the output in order that every machine indicates a power superior to 596 Carry out the by pass sequence from the base menu on the display panel digit 3 6 and insert the code 47263 indicated on the display panel After some seconds all the UPS will go to by pass line Verify that the percentage of indicated load from the display panel is even to less of the 596 on all the unit While operating on the by pass line the power share between the UPS depend only on the length of the cables so the cable must respect the rule on the length showed in the connection paragraph In the case in which the unbalance between the vary unit is superior you will have a degradation of the total power of the system For example if the unbalance in by pass is of the 20 the usable maximum power from the system wil
15. itch follow the instruction in the draw is shown an example of a connection for three units 1 2 3 R A EPO switch see the user UPS manual for the contactor status B EPO connector 1 2 3 UPS in parallel A bikep START UP WARNING SWMB To close SWMB observes the following precautions e e o Q don t close SWMB with extinguished UPS that are in parallel with other unities in normal operation This operation can cause a breakdown to the UPSs and it creates a dangerous voltage on the input line Q SWMB can be closed with UPS in Normal Operation following suitable formalities indicated in the paragraph FUNCTIONING MODES Q Is possible to block the SWMB switch with a device to avoid the involuntary closing in particulary on UPS with modular din SWMB switch as showed in the side picture the block happen with a plaque supplied with the UPS on UPS with handle SWMB switch the block happen with a padlock not supplied with the UPS Before starting the entire system it is necessary to carry out some tests in order to verify the proper connection between the UPS A Check that all the interrupters SWIN FBAT FBY SWBY SWOUT AND SWMB of the UPSs are opened B Close SWMB remove the block on a single unit and check on all the other units that
16. l be the 9096 of the total nominal total FUNCTIONING MODES More UPS connected in parallel share the current absorbed by the load In a system with more UPS connected in parallel there is only one MASTER unit and all the others are SLAVE units The UPS are all the same and the choice of the MASTER takes place when they are switched on The MASTER unit can be recognized by a capital letter P or capital letter B for UPS system with only one battery shown on the display panel MASTER and SLAVE units can be interchanged If a unit go out of order for example because a malfunction of the inverter it is automatically excluded At this point the load is shared among the operating units If the output power is too high for the remaining UPS the system will commute the load on the by pass line of all the units including the one that had been excluded The following indications are in order to be simplified referred to a system consisting of three units but they are also true for more complex systems EXAMPLE OFFUNCTIONING OF THE LOOP CONNECTION Assume that with signal cable undamaged the ups are in these state 1 2 3 A Connector 9 pole female B Connector 9 pole male B B B C UPS PARALLEL CABLE We los M D UPS PARALLEL ADAPTER 1 2 3 UPS in parallel UPS STATUS 1 Normal Operation Master unit 2 Normal Operation Slave unit 3 Normal Operation Slave unit OMNAO01 ANE
17. le Connector DB9 female pin 1 do not connect pin 1 do not connect pin2 do not connect pin 2 pin 9 pin 3 pin 4 pin 3 do not connect pin 4 pin 3 pin 4 do not connect pin 5 do not connect pin 5 do not connect pin 6 do not connect pin 6 do not connect pin 7 do not connect pin 7 do not connect pin 8 do not connect pin 8 do not connect pin 9 do not connect pin 9 pin2 Verify that all the signal transmission cables are properly tightened Now you can mount the front panel and close the covers switches panel The connectors must remain connected also when a unit is switched off OMNAO01 ANE GB REV00 pag 7 18 HOT INSERTION By providing hot insertion of UPS you can improve system serviceability and reliability With hot insertion you don t need to turn off all the UPS if you want to add another UPS in parallel Hot insertion is applicable only to UPS SYSTEM with these characteristics e The UPS system is prearranged with a distribution control panel e The UPS system is prearranged with the UPS BYPASS CABLE not supplied with the UPS e All the UPS in the system have the same firmware version Example of hot insertion 1 2 Hot insertion is possible only if you have M S configured the signal loop cable with the UPS BYPASS CABLE as showed in the picture at the left side A UPS PARALLEL ADAPTER B UPS PARALLEL CABLE C UPS BYPASS CABLE 1 2 3 Place the new ups and maintain it TURN OFF M S TURN O
18. per parallel connection requires the connection from a single mains node to the input terminals of the various UPS and the connection from their output terminals to a single load feed node with cables of the same thickness and length This requirement is necessary in order to ensure the power distribution when the system operates on the by pass line When operating normally the power distribution is automatic INSTALLATION The following items are supplied with the equipment Q connecting cable for signal transmission UPS PARALLEL CONNECTION Q connecting cable for adapting the signal transmission UPS PARALLEL ADAPTER Q UPS users manual POSITIONING For the positioning of each single unit refer to the UPS user manual OMNAO01 ANE GB REV00 pag 4 18 CONNECTIONS SIGNAL CONNECTION The UPS must be connected in Loop connection Loop connection has the redundancy on the signal cable redundant communication link between individuals units So it is the most reliability way to connect the UPS To connect the ups are necessary a cable UPS PARALLEL CONNECTION and an adaptor UPS PARALLEL ADAPTER When the length of the supplied cable UPS PARALLEL CONNECTION is not enough it s necessary to make a new one following the given specifications Specification to make the UPS PARALLEL CABLE Insulated multipolar cable screened with 7 wires of 24 AWG diameter capacity max 100pF m maximum length 100m
19. pply the load This important condition can be achieved by adding a redundant unit to the system The redundant unit is achieved by adding an additional UPS to the minimum number of elements necessary to feed the load so that after the automatic exclusion of a not working unit the power supply can go on The UPS connected in parallel is controlled through a card which exchange data Information are exchange between the UPS by a cable that them connects in Loop Loop connection has the redundancy on the signal cable redundant communication link between individuals units So it is the most reliability way to connect the UPS It allows also the hot insertion and the hot disconnection of an UPS Each UPS has its own controller that continuously intercommunicate in order to manage the entire system The cable transmits signals from the UPS Master to the other Slaves thanks to an opto insulated system so as to maintain the control systems electrically isolated from each other The system s logic assumes that the first activated unit becomes the Master and keeps under control the Slaves If the Master unit malfunction the control will be automatically switched over to one of the Slaves which becomes the new Master The system requires in the base operation that every single unit be provided with its own battery It is possible configure the ups system with only one battery by inserting the code on the command panel The pro
20. ries base connection ofh feo o des fofe re BAT BAT BAT 1 2 3 OUT OUT OUT Every UPS feeds its battery BAT Input switch FBAT on the UPS OUT Output terminal UPS 1 2 3 UPS in parallel 2 only one battery operation with code 467123 Star connection Ht d P P P BAT OUT BAT OUT BAT OUT BAT Input switch FBAT on the UPS OUT Output terminal UPS 1 2 3 UPS in parallel A Switch battery cabinet board optional Made the battery cable section for the current of each UPS This solution is able for high battery discharge current Serie connection HF Jma A B 6 BAT BAT BAT 1 2 3 OUT OUT OUT BAT Input switch FBAT on the UPS OUT Output terminal UPS 1 2 3 UPS in parallel A B C Cable section Wire A section for total UPS battery current UPS1 current UPS2 current UPS3 current Wire B section for UPS2 current UPS3 current Wire C section for UPS3 current This solution is able for low battery discharge current OMNAO001ANE GB REV00 pag 12 18 DIFFERENTIAL PROTECTION In the standard version the neutral output from the mains is connected to the output from the UPS Differential position A wrong position N In normal operation the sum of the current in the diff
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