SSW-06 - Multimotor (v.V1.6X)
Contents
1. a XX b i orta D D a Co gal 225 q HEELS 4 1 far 24 Project Examples 6 2 PROJECT 2 THREE MOTOR SEQUENTIAL CASCADE Example with the control of three motors in cascade starting sequentially one after the other It comprises three motors m single command it starts always the two motors one after the other with controlled deceleration through the start stop input it stops a motor of each time m without controlled deceleration through the general enable disable input it stops the three motors simultaneously by opening the contactors m input fault it stops the motor that is with fault 6 2 1 SoftPLC Project 2 General Enable of the 58W by SoftPLC ED 9453003 MMC Block for 3 motors Cascade starting of 3 motors S000 Ed OS oll WOOL WS000 oll WOOL MOTORZ STARTING ex BYPASS ux all WOOL all WS000 oll Wen MOTORS STARTING BYPASS 0x9 oll Wangi al WS000 oll WOO Figure 6 3 SoftPLC Project 2 Description 2 SSW 06 digital input for general enable closed and general disable open 5 3003 General Enable via SoftPLC MX5000 bit marker reserved for the MMC block output IX1 SSW 06 start closed and stop open digital input 1 4 5 SSW 06 Fault closed no fault digital2. 6 Im peces AAA 90 XC CIN UNEJ Els doses XC Il 0 0F9d z amp 0 0 9 Il 9 0 Il r bn 9 0 Il u O 0 0 Il u CL 9 0 0 Il f CL 9 0 0 E Bits F Il LU LL Cd 28 Project Examples 6 4 PROJECT 4 THREE MOTOR INDIVIDUAL CASCADE Example with the individual control of three motors which allows the individual starting and stopping control of each motor It comprises m three motors m three wire individual command via digital inputs separated start and stop for each motor m without controlled deceleration through the general enable disable input it stops the three motors simultaneously by opening the contactors m input fault it stops the motor that is with fault 6 4 4 SoftPLC Project 4 General Enable of the SSW by SoftPLC 1 3003 _ MMC Block for 3 motors Individual cascade starting of 3 motors aM MONA CES aM Wet aM Wen WS H T R2 STARTING BYPASS XT 1 000 DST2 P MOTORS STRRTIMG BYPASS Wanig West aM WS Figure 6 5 SoftPLC Project 3 Des
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4. through the general enable disable input it stops the two motors simultaneously by opening the contactors m input fault it stops the motor that is with fault 6 1 1 lt SoftPLC Project 1 General Enable of the SSW by SoftPLC 545 3003 MMC Block for 2 motors Cascade starting of 2 motors ol X 5000 Od XS aM ws wa ws a ws MOTORS STARTING EG BYPASS robs SM WOOD MOTORS STARTING BYPASS Figure 6 2 SoftPLC Project 1 Description IX2 SSW 06 digital input for general enable closed and general disable open 5 3003 General Enable via SoftPLC 5000 bit marker reserved for the MMC block output IX1 SSW 06 start closed and stop open digital input 1 4 SSW 06 Fault closed no fault digital inputs 4 96QX6 IOS6 starting digital outputs 5 IOS6 by pass digital outputs MW8000 word marker reserved for the modification of not used parameters 23 6 1 2 Project 1 Electric Diagram Project Examples 00 ES 6 M ON RT AAA S 1 SAL s ps DIAFZ Addl e 0F9d rr 0 es Ie glo amp 14 doses a qgu jaus ZII 2 p JR eld umi Bl SLA 4 At at 201 2 2 5 sr sa Cr CAD ALH p IL SILT LH
5. the source into the destination Source 1 2 and 3 into Destin 1 2 and 3 during every starting and stopping of the respective motor In the example below the M1 motor current P401 is loaded with 100 0 A 1000 and the current limit is loaded with 2 7 x In of the motor 270 Source 1 Destin 1 Constant Drive Parameter 1000 1401 Source 2 Destin 2 Constant PD Drive Parameter 270 110 Source 3 Destin 3 Constant Word Marker 0 8000 H Tag Figure 3 8 M1 motor data change 3 1 4 1 Not Used Starting Data Modification When there is no data modification from one motor to another a word marker must be reserved as destination In the example below the Word Marker MW 8000 has been reserved All the used motors can use this same word marker Source 1 Destin 1 Constant Word Marker 0 8000 Source 2 Destin 2 Constant Word Marker 0 8000 Tag Source 3 Destin 3 Constant Word Marker 0 8000 Figure 8 9 Not used data change 3 1 5 Fixed Motor Through this property it can be determined if after the drive of the last motor the SSW must be by passed through the contactor of by pass or if it must keep supplying the motor Some restrictions for the use of this property exist as only the last motor of the sequence can be fixed all the motors must be turn on or turn off in the same instant the
6. 12 3 1 3 2 DY Pass OMODU ne 12 3 1 4 Starting Data Modificato i naa NNI MEM MM NM nna 13 3 1 4 1 Not Used Starting Data Modification Leere eere erre rennen nena nnn 138 3 1 5 13 3 1 6 Minimal Operation Conditions 0220 222 2 14 321 MONITORING 14 4 SSW 06 SOFT STARTER PARAMETERIZATION 16 4 1 P140 EXTERNAL BY PASS 16 4 2 P220 LOCAL REMOTE SOURCE SELECTION 11 eere 16 4 3 P621 CLOSED BY PASS CONTACT OR 202559045 ra 16 4 4 950 iis ia 16 4 5 P951 DIGITAL INPUT AND OUTPUT EXPANSION BOARD ENABLING 17 5 IOS6 OE 18 5 1 MECHANIGAL INSTALLATION aa 18 5 2 ELECTRIC INSTALLATION di ln siano 18 5 2 1 DgRerlpie ccm 19 5 2 2 6 5 rr 19 5 2 3 19 6 PROJECI EXAMPLES sp
7. The contactors K2 to K7 must be able to withstand the starting current of the motors they drive It is recommended to use slow blow fuses for the individual protection of the motors against short circuits Verify whether the relay outputs have the current capacity required to switch the power contactors The supply must come from a 24 Vdc power supply with a current capacity higher than 150 mA 21 Project Examples It is recommended to use slow blow fuses for the protection of the complete system against short circuits These fuses must withstand the total current consumed by the system plus the starting current of the biggest driven motor Project a circuit breaker for the protection of the control circuit and the interruption of the supply to the K1 contactor coll K1 contactor will be switched off when the SSW 06 indicates an error thus protecting the driving system This contactor must be able to withstand the starting current of the biggest motor and the current of the other motors running simultaneously 22 Project Examples 6 1 PROJECT 1 TWO MOTOR SEQUENTIAL CASCADE Example with the control of two motors in cascade starting sequentially one after the other It comprises two motors single command it starts always the two motors one after the other with controlled deceleration through the start stop input it stops a motor of each time m without controlled deceleration
8. fault protections must be turn off all the motors In item 6 3 am use example is shown Fixed Motor Fixed Motor Starting Starting ax Digital Output v xax Digital Output e Teo By Pass By Pass Y ax Digital Output 3 EZ Tag Figure 3 10 Fixed Motor S 13 SoftPLC Function 3 1 6 Minimal Operation Conditions An example showing the starting of two motors with three wire command using the digital inputs 7 and 8 for the M1 motor and 9 and 10 for the M2 motor SKX3003 25000 START MOTORI STARTING 0 4 STOP BYPASS P 0 5 FRULT Properties SRC1 Mwr8000 psT2 778000 4 ipe MOTOR2 STARTING 0 6 BYPASS f gt Type 5 Bit System Marker v SQL DST1 gt e lt Mwso00 Address ZSX3003 General Enable 1 v 2 b gt s wr weooo 78000 Range 45 Bit System Marker 3000 3030 Cancel Help Figure 8 11 Minimal operation conditions In order to start up this example simply follow the next steps m Insert a coil for the soft starter General Enable SoftPL C 5 3003 1 General Enable m Insert the MMC function block m Enable the MMC block at the EN input m Insert a coil at the MMC block output ENO and reserve a bit marker 96MX5000 for this coll m Program the MMC block properties m he following parameters must be changed P140 1 P220 9 P621 0 P950 1 and P951 1 These p
9. inputs 4 96QX6 IOS6 starting digital outputs QX5 IOS6 by pass digital outputs MW8000 word marker reserved for the modification of not used parameters 20 Project Examples 6 2 2 Project 2 Electric Diagram 26 E m m Il Ui 6 rou ot AAA vy D ups DIAFZ A AY dds NNI e 0F9d ele lea le amp E MEO j CIN UNEJ Els a qeu je1auc dois uels I Hi 10 0 9 cia tr a H Lo Cw aL p eit p PL PL Ao i orta dd as 1 8 n Project Examples 6 3 PROJECT 3 THREE MOTOR FIXED SEQUENTIAL CASCADE Example with the control of three motors in cascade starting sequentially M1 M2 and 3 with the motor 3 connected directly to SSW without by pass contactor It comprises three motors single command it starts always the three motors starting sequentially M1 M2 and with controlled deceleration through the start stop input it stops a motor of each time sequentially M3 M2 and M1 m without controlled deceleration through the general enable disable input it stops the three motors simultaneously by opening the contactors m input fault it stops the motor that is with fault 6 3 4 SoftPL
10. motor in cases when the soft starter cost is significant compared to the cost of entire motor driving system 1 2 2 Disadvantages m The motor protections implemented in the soft starter are not used m he need of protections like overload relays phase loss relays fuses etc for every driven motor m It only allows the starting of the motors but does not allow their controlled stopping in applications like centrifuge hydraulic pumps m It uses the same starting data for all the motors which limits its use to identical motors m Complex motor driving system because of the wiring contactors timers or PLCs used SSW 06 Multimotor Control 2 SSW 06 MULTIMOTOR CONTROL It is achieved by using SW 06 soft starter with the 1056 board from the K IOS kit in cascade multimotor applications 2 1 ADVANTAGES m It makes it possible to control up to three motors with only one SSW 06 soft starter m Starting and stopping in a sequential cascade or individually It allows the modification of some of the starting characteristics by means of the modification of up to three parameters for each of the three motors for instance starting current and motor current Therefore it makes the starting of three different motors possible within a range from 30 96 to 100 96 of the SSW 06 soft starter rated current By allowing the controlled starting and stopping of the driven motors it makes the use with centrifuge hydraulic pumps poss
11. pass contactor 42 P220 LOCAL REMOTE SOURCE SELECTION It must be programmed in order to allow the control of the motors via SoftPLC 9 SoftPLC Local O Always Local 2 HMI L Reading writing 1 Always Remote 2 HMI L 3 HMI R 4 Digital inputs DI4 to DI6 5 Serial L 6 Serial R 7 Fieldbus L 8 Fieldbus R 9 SoftPLC Local 10 SoftPL C Remote 4 3 P621 CLOSED BY PASS CONTACTOR It is used in this application to make it possible the disabling of the by pass contactor closed short circuit protection In this application the protection would trip due to the short circuit made by the external by pass contactor controlled by the SoftPL C which has not been opened in the instant the SSW 06 soft starter was removed from the circuit after starting one of the motors Factory setting O Inactive 1 Active Reading writing 1 Active Inactive It makes it possible the use of the SSW 06 soft starter in multimotor control applications 1 Active Active protection it is the factory default setting NOTE 0 Deactivate this protection only to make the SSW 06 use in multimotor applications possible i e when the SSW 06 drives more than one motor 44 P950 ENABLE SOFTPLC It allows enabling the execution of the SoftPL C user applicative software 1 Yes Factory setting Heading writing O No Disabled SoftPLC applicative SSW 06 Soft Starter Parameteri
12. C Project General Enable of the 55W by SoftPLC ED 443003 4 MMC Block for 3 motors Sequential cascade starting with 52W fixed to the motor 3 in the end of the start without external by pass X S000 MOTORI STARTING 2X4 BYPASS 90055 M5001 b 0 DST1p 000 0 DST2 000 0 Ss M WSODO MOTORS STARTING 40X6 pie al BYPASS gt sux MXS5001 0 5 1 sowrwaeon 0 DST2 SM WERDOD MOTORS STARTING IES SM 5001 SM wann SM Wenn tM ROO Fault mputs of the motors 5 DIS M1 4TX4 DI4 M2 8155 DIS M3 If hapens a fault in one motor all motors nust be turn off Ix IX tM X SODI 4 4 eae Figure 6 4 SoftPLC Project 2 Description m IX2 SSW 06 digital input for general enable closed and general disable open m 5 3003 General Enable via SoftPLC 96MX5000 bit marker reserved for the MMC block output m IX1 SSW 06 start closed and stop open digital input IX3 96IX4 IX5 SSW 06 Fault closed no fault digital inputs m MX5001 bit marker reserved for the fault indication 96QX4 6 IOS6 starting digital outputs 96QX5 QX7 IOS6 by pass digital outputs MW8000 word marker reserved for the modification of not used parameters 27 AN TNI TX 6 3 2 Project 3 Electric Diagram Project Examples m E
13. Motors Energy Automation Coatings Soft Starter SSW 06 V1 6X Multimotor Application Guide Language English Document 10000603753 00 EBENEN tt Multimotor Application Guide Series SSW 06 V1 6X Language English Document Nr 10000603758 Publication date 08 2009 Index INDEX ABOUT THE MANUAL 6 ABREVIATIONS AND DEFINITIONS ico un nio 6 NUMERICAL 25 dEaE HUE FERES E RH EE 6 1 INTRODUCTION TO THE MULTI MOTOR CONTROL 7 BABAELEEMUETIMOTOT illa 7 L2 CASCADEMUETIMO 7 1 2 1 8 1 2 2 UDINE UNA NNUS 8 2 SSW 06 MULTIMOTOR 9 21 ADVANTAGES car cae ITE MM 9 P ME S psg a rca acc ecco cease eee ec cee 9 Jd SOFIPLOC FUNGTIODIU 10 3 1 MMC FUNCTION BLOCK MULTIMOTOR CONTROL 12 1 10 3 1 1 used MOONS tren iid EE des sad diari eat vani ener pae 10 3 1 2 pecca 10 3 1 2 1 jb on J nici 11 3 1 2 2 Three WEG isodsrenvi d dii PUER UEEURR TIE ini ia 11 3 1 2 3 ROMERO DOTT 11 3 Ec T ER 12 3 1 3 1 10 T
14. arameters are detailed in the next chapter Compile the project and transfer it to the soft starter 3 2 MONITORING WLP has on line monitoring of the applicative software developed for the SoftPLC which makes the development and debugging of the project easier The monitoring of the digital inputs and outputs is showed in the figure 3 12 WLP I O Monitoring Inputs DI DI2 Expansion Inputs DI DI8 Outputs RL1 RL2 Expansion Outputs RL4 RL5 RLG Figure 8 12 Monitoring of the digital inputs and outputs The monitoring of an MMC block is showed in the figure 3 13 14 SoftPLC Function 10 Vole B Yeo 30053 MOTOR 1 MOTORS MOTORS STARTING 25 DSTI i OST b401 STARTING DSTI bert Se 5 2 Todd WOOD STARTING BYPASS 05 eu Figure 8 13 Monitoring of an MMC block ro 5000 15 SSW 06 Soft Starter Parameterization 4 SSW 06 SOFT STARTER PARAMETERIZATION parameters related to the multimotor control using the IOS6 board from the SSW 06 soft starter K_IOS6 kit are described next 4 1 P140 EXTERNAL BY PASS CONTACTOR It is used in this application to indicate to the SoftPLC that an external by pass contactor will be used 1 active Factory setting O Inactive 1 Inactive Reading writing 1 Active m O Inactive Without external by pass contactor m 1 Active With external by
15. atic control of up to three motors Input EN Enables the block Output ENO Indicates that the block is active Properties Motor1 2 or 9 ee START Starts the motor in 1 SIOP otops the motor in O FAULT otops the motor in O SIARTING Indicates motor starting or stopping BYPASS Indicates active by pass een gt SRC1 Data source SRC2 Data source SRCe Data source DST Data destination DST2 Data destination DST2 Data destination Figure 3 1 MMC function block 3 1 1 Used Motors block is divided into three sub blocks Motor 1 Motor 2 and Motor 3 with each motor characteristics Initially the not used motors must be disabled in the block by means of the properties of each motor In order to get access to these properties double click on the block Matar 1 2 Motor 3 Matar 1 Motor 2 Motor d Used Motor Used Motor Start Start Digital Input 0 ES Tag Figure 3 2 Not used Motor 3 3 1 2 Inputs The control logic for each motor is performed based in three inputs Start Stop and Fault Those inputs make different types of control logics possible either two wire or three wire start stop commands 10 SoftPLC Function 3 1 21 Two wire In the example below the digital input 7 017 Start Stop of the 056 board starts the Motor 1 when closed and stops it when opened The inputs Start Stop and Fault are programmed as the same DI Matar 1 Motor 2 Moto
16. atic with rotation via digital input for the level sensors m Rotation in automatic mode at every activation via level sensors it starts two of the three pumps m Manual automatic selection via digital input manual mode if open and automatic when closed Manual activation is only allowed in manual mode and with closed level sensors General disable input allows immediate stop of all the motors m Phase loss protection via SoftPL C even with motors driven via by pass Programmed automatic error reset for faults of the SSW 6 5 1 Multipump System High Level Low Level Sensor Pump 2 Pump 3 Close Cistern Figure 6 6 Multipump system The figure 6 4 system is often used in residential or commercial buildings where it is necessary to keep a water reservoir full through the activation with rotation of two of the three used centrifuge pumps In this system only two pumps are necessary and the third is a stand by one for a case of failure therefore the rotation is necessary in order to keep this pump in perfect operation conditions 6 5 2 SoftPLC Project 5 Because of the size of this project SoftPL C applicative it must be visualized directly in the WLP 31 Project Examples 6 5 3 Project 5 Electric Diagram y AU s ps DIAFZ o Apes TNH3EX Josuac 405485 8487 BART MoT do1s uels dos sels doyS Heys
17. cription X1 SSW 06 digital input for General Enable 5 3003 General Enable via SoftPLC MX5000 bit marker reserved for the MMC block output IX7 IX9 96IX11 IOS6 Start digital inputs IX8 IX10 961X12 IOS6 Stop digital inputs 2oIX2 96IX2 1 4 SSW 06 Fault digital inputs 4 96QX6 96QX8 IOS6 starting digital outputs 5 7 96QX9 IOS6 by pass digital outputs MW8000 word marker reserved for the modification of not used parameters 29 Project Examples 6 4 2 Project 4 Electric Diagram vy AU s ps 33AFZ A Apr AY TWNQILKA MO Fl Bid qid 5 ld Cl EL LL B FI H o Sy w 0 30 S I HME Els INO cH LEG OL SL 950 O_O 82X Il Il Il Il e CL 1 9 g O sO sO sO sOeGeO x5 sO ge 02 A E A E A E A EA E A E A E A E A E A F Il HM 30 Project Examples 6 5 PROJECT 5 MULTIPUMP Example with multioump control which makes the automatic control of three pumps with rotation for low power applications It comprises m Three motors with three centrifuge pumps m Manual and automatic command Manual via three digital inputs separated start stop for each motor Autom
18. ed phase loss for instance if the detection is carried out through the voltage monitoring others like overload must be performed by means of individual overload relays for each motor 1 2 CASCADE MULTIMOTOR soft starter is used to start each motor individually which is then connected directly to the line The cascade starting can be performed in two forms In sequence the motors are started in a sequence one after another and stopped simultaneously or individually the motors are started and stopped individually SSW 06 K2 K3 K4 E Motor 1 H Motor 2 i Motor 3 Figure 1 2 Cascade multimotor The soft starter must be selected to withstand the duty cycles of the motors i e the starting current and time and the number of starts per hour considering all the motors Introduction The Multimotor Control It requires auxiliary contactors for controlling the motors The contactors K2 K4 and K6 are used to start the motors individually through the soft starter while K3 K5 and K are used to connect the motors to the line after their starting The majority of the most advanced soft starters on the market do not allow this type of application because they are every time more focused in the protection of the electric motor and the electric installation and not only in starting the motors 1 2 1 Advantage m Reduction of the driving system cost by using only one soft starter for starting more than one
19. ible m A reduction in installation and maintenance costs due to the simplicity of the motor driving system implemented inside the SSW 06 by means of the 056 board and the SoftPLC software m Easy implementation and modification of functions and protections through the SoftPLC by using the project software WLP 2 2 DISADVANTAGES m Many of the motor protections implemented in SSW 06 soft starters are not used m he need of protections like overload relays phase loss relays fuses etc for every driven motor SoftPLC Function 3 SOFTPLC FUNCTION SSW 06 has the capacity to implement the SoftPL C a programable logic controller software with contact language Ladder and the possibility 1 k byte of applicative software With the SoftPLC interlocking logics between digital and analog inputs and outputs for driving motors among other logics can be created SoftPLC is programmable through the WLP software This software also allows on line monitoring of the applicative program developed by the user which facilitates its development The WLP software comes for free together with the SSW 06 soft starter and can also be downloaded from WEG s website Information on its use can be obtained in the SSW 06 WLP software manual 31 MMC FUNCTION BLOCK MULTIMOTOR CONTROL A function block called Multimotor Control MMC has been developed for the multimotor control system which together with the IOS6 board allows the autom
20. iciali siii ironia ross dn 21 6 1 PROJECT 1 TWO MOTOR SEQUENTIAL CASCADE 2 22 23 6 1 1 dll 23 6 1 2 Project T EIGCIHO Diagram 24 6 2 PROJECT 2 THREE MOTOR SEQUENTIAL 25 6 2 1 T T ETE TI 25 6 2 2 Project 2 Diagrammi 26 6 3 PROJECT THREE MOTOR FIXED SEQUENTIAL 27 6 3 1 pSONPLCO CERT DOT TTE TED DTE Tm 27 Index 6 3 2 Projects Electric VR EKE HERI PEE NUEENMEEFNKEXVE ND DEENVEEF IUE 28 6 4 PROJECT 4 THREE MOTOR INDIVIDUAL CASCADE Leer eren eene nn nna nnn anas 29 6 4 1 SontPLG Project 4 PE ED TT E LED 29 6 4 2 ProIecE4 BICC UC ES n 30 565 PROJECTS MULTIPUMP aa aa ia 31 6 5 1 Mullipump System 31 652 SoftPLeFroicct Sic A 31 32 6 5 3 Project 5 About the Manual ABOUT THE MANUAL This manual provides the necessary information for the ope
21. pacity 1A 9 240 Vac HL COM Common point of the relay outputs To be used only for the relay outputs REL Board external power supply input 24 Vac 20 to 30 150 MA NO Normally open contact COM Common NOTE 0 Cable cross section from 0 5 to 1 0 mm Maximum torque 0 50N m 4 50 Ibf in 18 056 Board KitK I0E flue 5 2 1 Digital Inputs The digital inputs must be activated with an external 24 Vdc power supply using either O V or 24 Vdc as the common point Terminal Strip X4 DI7 Terminal Strip X4 09 X 3 DI9 D110 DI10 e 15 Dit 15 011 vy 6 DI12 6 0112 DI COM DI COM 24Vdc Figure 5 2 Connection diagram of the digital inputs NOTE 0 The digital inputs wiring must be made with shielded cables and must be laid separately from other wiring power 110 V 220 V command etc 5 2 2 Digital Relay Outputs The digital outputs are normally open relay contacts They close the contacts when activated 8 RL4NO 9 RL5NO SUPPLY INTERNAL RELAYS Figure 5 3 Relay outputs diagram NOTE Relays contactors solenoids or electromechanical brake coils connected to relay outputs can generate interference in the control circuit To eliminate this effect RC suppressors must be connected in parallel with the coils of those devices in case of AC supply and free wheeling diodes in case of DC supply 5 23 1056 E
22. r 3 Used Motor Start Digital Input 1056 BOARD e DIF DIS LiB Stop 2 3 ZI Digital Input 0 z k Fault tcI Digital Input MEE IN Figure 3 3 Two wire control 3 1 2 2 Three wire In the example below the digital input 7 017 Start of the IOS6 board starts the Motor 1 when pressed to close and the digital input 8 DI8 Stop stops it when pressed to open The inputs Stop and Fault are programmed as the same DI Motor 1 Motor 2 Motor 3 Used Motor Start Digital Input 056 BOARD 7 Tag Stop E E 8 Tag Fault 8 Tag Figure 8 4 Three wire control 3 1 2 3 Protection In the example below the digital input 9 DI9 Fault allows the installation of any type of protection which disables the motor when it opens The Fault input only disables the motor or prevents its starting but it does not cause a SSW 06 soft starter fault Motor 1 Motor 2 Motor 3 Used Motor Start Digital Input x 7 Tag Stop Digital Input 8 Tag gt E Digital Input m 4 Figure 8 5 Protection input 11 SoftPLC Function One example is the installation of a motor temperature sensor which by tripping stops the motor and after cooling down allows the motor start again Another example is the installation of level sensors floating level s
23. ration of the SSW 06 soft starter used in the multimotor application with the IOS6 digital input and output expansion board and programmed in ladder language This manual must be used together with the SSW 06 user manual SoftPLC manual and the WLP software ABREVIATIONS AND DEFINITIONS PLC Programmable Logic Controller RAM Random Access Memory WLP Ladder language programming software USB Universal Serial Bus NUMERICAL REPRESENTATION Decimal numbers are represented by means of digits without suffix Hexadecimal numbers are represented with the letter h after the number Introduction To The Multimotor Control 1 INTRODUCTION TO THE MULTI MOTOR CONTROL Soft starter multimotor control consists in starting more than one motor with the same soft starter It is still used in the industry with the purpose of reducing the cost of the motor starting system It can be implemented in two ways in parallel or in cascade 1 1 PARALLEL MULTIMOTOR All the motors are connected in parallel starting and stopping simultaneously H Motor 1 Motor 2 E Motor 3 Figure 1 1 Parallel multimotor The soft starter must be selected in order to withstand the sum of the individual motor currents for both the starting and the continuous operation It is feasible for low power applications where the motor costs are less than the soft tarter cost All the soft starters allow this type of application Some of the soft starter protections can be us
24. sted below are indicated in the diagrams by means of their respective numbers The use of ultra rapid action fuses is not mandatory for the SSW 06 soft starter operation however their use is recommended for the complete protection of the thyristors The T1 transformer is optional and must be used when the supply line voltage is different from the supply voltage for the electronics and the fans In the event of damage in the SSW 06 power circuit that keeps the driven motor running due to short circuit the motor protection is obtained with the use of the K1 contactor This contactor must be able to withstand the starting current of the used motors X1E 83 and 34 is only available in the models with fans For the protection of the motors it is recommended the use of overload relays thermistors or thermostats for each used motor When thermistors or thermostats are used they must provide normally closed contacts which must be wired to the Fault input of the MMC block Remember that when using two wire command single pole single throw switch every time the power returns after a power failure the motor will restart immediately if the switch remains closed In case of maintenance in the Soft Starter SSW 06 or in the motors it is necessary to disconnect the power supply input in order to assure complete isolation of the equipments from the supply line An emergency stop can be implemented by cutting off the system command supply
25. witches with centrifuge pump applications When the level is too high or too low then the level sensors will trip stopping the motor and when the correct level is restored allow the motor start again Pump Temperature Sensor Level Sensor Figure 8 6 Protection examples 3 1 8 Outputs They are used to control the power contactors that will connect the motors to the soft starter during their start and stop stages and to connect them to the supply line when necessary releasing the soft starter 3 1 31 Start Stop Output It is used to connect the motor to and disconnect it from the SSW 06 soft starter during the start and stop stages In the figure 3 7 example the digital output 4 RL4 Starting controls the contactor K2 which is responsible for the connection of the M1 motor to the soft starter during the start and stop stages 3 1 3 2 By pass Output It is used to connect the motor directly to the supply line after its starting In the figure 3 7 example the digital output 5 RL5 By pass controls the contactor which is responsible for the connection of the M1 motor to the supply line after its starting SSW 06 011 uyw 4 Starting Tag By Pass Tag 056 BOARD Figure 8 7 Start stop and by pass outputs 12 SoftPLC Function 3 1 4 Starting Data Modification The MMC block allows the modification of up to three pieces of data for each motor This data is loaded from
26. xternal Power Supply IOS6 board needs to be fed externally for the operation of both the relay outputs and the digital inputs It should be supplied by a 24 Vdc source with current capacity higher than 150 mA The same power supply can be used for the digital inouts and outputs 056 Board Kit Terminal Strip X4 Figure 5 4 a gt Lists ai FES FRG 71111727771 056 board external power supply 20 Project Examples 6 PROJECT EXAMPLES oome suggestive projects which can be used integrally or partially to create the desired application are presented in this section Those examples are available in the WLP listed with the same used in this application guide as showed in the figure below 00000 00 ooo O WEG Ladder Programmer Project View ETE Communicate Help Parameter Values FIO li ull Export Project as Application Import Application to coco gt MEN Sequential cascade 2 motors Project 1 Project 2 Sequential cascade 3 motors Project 3 Fixed sequential cascade 3 motors Project 4 Individual cascade 3 motors Multipumps i ProjectS Figure 6 1 Accessing the WLP examples NOTES The main warning notes for all of the suggestive projects li
27. zation m 1 Yes Enabled SoftPLC applicative 4 5 P951 DIGITAL INPUT AND OUTPUT EXPANSION BOARD ENABLING Its function is to enable the K IOE kit digital inputs and outputs expansion board 056 This board can only be used through the SoftPLC 1 Yes Factory setting Heading writing O No lOS6 board disabled m 1 Yes lOS6 board enabled 056 Board Kit K IOE 5 IOS6 BOARD KIT K IOE It is an optional board with six isolated digital inputs and six isolated relay outputs internally connected to the product and allowing the expansion of the SSW 06 number of inputs and outputs Being used together with the SoftPLC it allows the electric driving system eliminating a considerable amount of wiring relays timers contactors and micro PLOs Therefore reducing installation and maintenance costs NOTE 0 When the 056 board is used then the optional communication boards from the KFB kits cannot be used anymore 5 11 MECHANICAL INSTALLATION The IOS6 board is easily installed inside the SSW 06 allowing mechanical robustness and a simple installation Figure 5 1 1056 board mechanical installation 5 2 ELECTRIC INSTALLATION The signal digital inputs and outputs and the external power supply connections are made at the 056 board terminal strip X4 6 isolated digital inputs Minimum high level 18Vdc Maximum low level 3Vdc Maximum Voltage 30Vdc Input Current 11mA 24Vdc Contact ca
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