AED9201B
Contents
1. _ _ KL2 HBM AED9201B H E _ KL5 I F 1 E H 2 H H Ge a RS485 RS232 H E al D mE 7 23 W a Color codes HBM BU blue green RD red white GY grey BK black Fig 3 1 2 Transducer connection in the AED9201B basic device for a 6 wire connection There are two methods of connection for transducers implemented in four wire circuitry e Connection via a 6 core extension cable bridged sensor circuit in the transducer con nector e Connection without an extension cable sensor circuit bridged at the transducer electron ics HBM 10 HBM Transducer connection Plug inconnection Transducer Cableto transducerelectronics Cable shield Fig 3 1 3 Transducer connection in 4 wire circuitry via a 6 core cable extension 2 HBM AED9201B H LH E KL6 KES IH ed IE x E IH T e lt 1 2 E 4 6 2 EN Jl Color code HBM BU blue GN gree2. AED9201B Diagnostic bus E TARA HE KLG _KLS O EL HE Ss 18 30 V t AH Lu LH e H E p RS485 RS232 UE ti HUTY Fig 3 5 1 Connecting the diagnostic bus via terminal KL1 The interfaces setting of the bus is defined and cannot be changed 38400 bit s 8E1 External bus termination resistances are not necessary for this bus The HBM interface converter can be used to connect the RS485 bus to an RS232 COM port of the PC HBM AED9201B en Connecting the diagnostic bus 21 AED9201B en Diagnostic bus RS 485 2 wire TB RB Fig 3 5 2 Diagnostic RS485 bus The ground of the interface driver is related to the GNDext terminal The interface driver of the master should be also connected to this GNDext Only a connecting cable with a screen grounded on two sides should be used as the inter connecting cable between the AED 9201B and the bus and the master see also AED9201B cable connection via a PG gland The functions and commands of the diagnostic channel are described in the help file aed help e Diagnosis The address corresponds to the address of the AD103C amplifier command ADR 00 89 factory setting 31 see aed help e Basic Commands This ad dress is independently from the CANOpen address The following functions can also be execute
3. External power pack 1 Fig 3 6 1 Connection of digital I Os inputs IN1 2 electrically isolated by ext power pack 2 IN1 trigger Inputs IN1 2 are electrically isolated from the external supply voltage Us as well as from the amplifier ground The ground connection of both the inputs is initially connected to the ground of supply voltage Us Logic level IN1 Trigger Break Dosing IN2 Taring or start dosing Quiescent level low Quiescent level low duration gt 20 ms Quiescent level low duration gt 20 ms active edge high low edge Activation low high low Puls Activation low high low Puls AED9201B en Connecting digital inputs outputs 23 A AED9201B en Unused inputs remain open If the input circuit is also supplied via Us the ground of the inputs and the ground of the must be connected V IN2 eG e External power pack INT V N External 59 AED9201B load IN2 IF our E lH L H our out F ou
4. dO 11 12 13 CONNECTING the CIAQNOSTIC DUS caia 20 D GIAGNOSIIC LUST te S 20 distributor as as tua ala lada ltda da ata ataca laca need idad 8 AED9201B en HBM 28 Index E electrical exe a1 8 s01 0 a e EA AE S EE E A E rrr 8 interface CONVE rr ete tette tod a alae 17 L load cell connection 00101 100110101801001010100001016000000000000000010101016 8 M imanttacturersnoleSos 22 41 es ee e cc ACAD Le en ETE P on eie 6 mechanical 7 multi channel measurements 18 gland TR 8 26 potential equalizationz xou dd e edendi dd Lt ru Lo Ras cts 17 eee EEUU 4 Q quiescent level RS LM Ee uM et a eu 18 R nep 6 5422 NE HK vo TRE 6 S serial interface cr 6 RS232 A E A E A E E E A NN A eee 6 7 15 17 NN A EE 6 54 TAAA A E E A E A EA A 15 17 Supply Voltage soii 14 supply Voltage AF DIZO B anotar 14 26 HBM AED9201B en Index 29 T transducer COnnection 1 3 011110101100100100000000101010100101200000081767 8 U A NS RNA 6 AED9201B en HBM Modifications reserved All details describe our products in general form only They are not to be understood as express warranty and do not constitute any liability wha
5. bus mode is set out as a Master Slave configuration with the AED implementing a slave This means that all the AED activities are initiated from the control computer Each AED is given a separate communication address 00 89 and can then be activated by an Sii ii 00 89 Select command A broadcast command 598 is implemented for specific communication situations This means that after a command of this type all the AEDs exe cute the command of the Master but none of the AEDs respond All these communication commands are described with relevant examples in aed_help_e AD103C Description of the basic commands 4 wire physical circuit Line Line termination termination Fig 3 4 1 Bus structure 4 wire bus general The termination resistances of 500 marked in Figure 3 4 1 are important for the electrical function of the bus system These resistances safeguard the quiescent level for the receiver on the bus line The physical circuit must only be connected with these resistances at the line ends AED9201B en Multi channel measurements bus mode RS485 19 AED9201B en For the local bus termination distribution shown in the diagram the Master and the AED with address 89 should include the termination resistances Which is why in this AED the bus connection is activated with the commands STR1 and TDD1 see aed_help_e AD103C Description of the basic commands The HBM interface converter also in
6. changes of cable resistances affect the measurement result This means that even if no further changes are made to the 4 wire cable used for calibration there will still be measurement errors when there are temperature changes be cause the cable resistance and possibly the contact resistances at the connectors are tem perature dependent With the 4 wire circuit feedback lines 2 and 3 are directly connected at connection terminals 2 and 3 in the AED see Fig 3 1 4 AED9201B en HBM 12 Transducer connection Equivalent circuit of the bridge with bridge resistance Rg and supply lines with line resistances R and Riz 4 m A Pou 0 0178 mm m for copper T 3 14 l Length of cable Cross section of cable gt R R 1 69 beil 10 0 14 The voltage drop over the bridge feeder cables be determined from bridge resistance cable length cable cross section A and the bridge excitation voltage Urt2 For Re 80 O Rui 1 60 l 10 m and 5 V there is an excitation current of Ign Rie 60 and thus voltage drop over the two line resistances totaling approx 0 32 V Ubridge 4 8 V For Rs 80 Q RL2 160 100 m and Usa 5 V there is an excitation current of ler Ri2 45
7. mA and thus a voltage drop over the two line resistances totaling approx 1 4 V UBridge 3 6 V HBM AED9201B en Transducer connection AED9201B en 13 This is irrelevant for the 6 wire circuit as the voltage drop over the sensor lines is taken into account in the measurement signal But with a 4 wire circuit the dependency of the copper resistance of the cables on tempera ture goes directly into the measurement result as the bridge excitation voltage Usriage changes RL t Rizo 1 a t 20 C where R20 is the line resistance at 20 C and a is the temperature coefficient of the copper calculation see p 13 acy 0 00392 1 K With a cable length of 100 m and a temperature differential of 10 C there is a line resis tance of 1 Rua t 16 1 0 00392 10 16 6 Q This changes the bridge excitation voltage of Ubridge 5 7 V at 20 C to Upridge 3 53 V This change in bridge excitation voltage directly at the transducer changes the measurement signal of the bridge by 1 9 100 1 3 53 V 3 6 V This typical calculation shows that if long cables are involved only 6 wire circuitry should be used HBM 14 Connecting the supply voltage 3 2 Connecting the supply voltage The power supply must meet the following requirements AED9201B DC voltage 15 30 V nominal 18 30 V Current consumption lt 175 mA without bridge Current consumption lt 275 mA f
8. 2 Start filling Output functions dosing function IMD lt 2 no dosing mode LIV1 deactivated LIV2 deactivated LIV1 activated LIV2 activated LIV3 activated LIV4 activated control OUT1 via POR command control OUT2 via POR command limit value LIV1 controls output OUT1 limit value LIV2 controls output OUT2 limit value LIV3 controls output OUT3 limit value LIV4 controls output OUT4 Outputs OUT5 6 cannot be driven HBM AED9201B en Connecting digital inputs outputs IMD 2 dosing mode 25 The following output functions are available subject to the output mode command OMD Outputs OMDO OMD1 OMD2 OUT1 Coarse Flow Coarse Flow Coarse Flow OUT2 Fine flow Fine flow Fine flow OUT3 Ready signal Ready signal Ready signal emptying emptying emptying OUT4 Tolerance overrun Outside Tolerance Alarm OUT5 Tolerance underrun see command MUX see command MUX OUT6 Alarm see command MUX see command MUX 1 for emptying time gt 0 EPT gt OUT3 emptying control is over set time for emptying time 0 EPT OUTS ready signal is after actual value determination The command MUX is able to control the digital outputs OUT5 and OUT6 if the dosing mode is activated IMD 0 and not used for the dosing control OMD gt 0 AED9201B en HBM 26 AED9201B cable connection 9 7 AED9201B cable connection via PG gland Fan out the cable s
9. 2 ml Tre 0 ud 1 Equivalent interface marking TA T R Fig 3 3 1 Pin assignment for the 5232 5485 interfaces AED9201B en HBM 16 Connection to a computer No bus mode The RS232 interface allows the AED to be connected directly to a PC The cable length is limited to 15 m and bus mode is not possible Computer AED9201B RS232 RS232 o9 RxD O Housing 2 O O 18 30 V 5 OND 9 GND O O female connector soldered view Housing O O 25 pin female connector Power pack soldered view Fig 3 3 2 Connecting an AED to a computer via the RS232 interface HBM AED9201B en Connection to a computer 17 Bus mode The RS485 interface with a 4 wire connection allows the full range of AED functions with a maximum cable length of 1000 m To connect the AED to the COM port of a PC RS232 you need an interface converter 1 SC232 422B from HBM Basically shielded cables should be used for the interface wiring with the cable shielding being connected to the AED housing via the PG see AED9201B cable connection via the PG gland The power supply can also be connected via this cable with a 6 core shielded cable being necessary If it should be necessary a separate cable can be used to establ
10. I O connection cables only need to be shielded if the ca bles are longer than 30m 32 81 yd or are routed outside closed buildings EN 61326 1 The CE mark enables the manufacturer to guarantee that the product complies with the requirements of the relevant EC directives the declaration of conformity is available at http www hbm com HBMdoc In accordance with national and local environmental protection and material recovery and recycling regulations old devices that can no longer be used must be disposed of separately and not with normal household garbage If you need more information about waste disposal please contact your local authorities or the dealer from whom you purchased the product HBM HBM Introduction and appropriate use Introduction and appropriate use AED9201B digital transducer electronics are part of the AED component family that digitally conditions signals from mechanical measurement sensors and networks them with bus ca pability These include digital amplifier motherboards basic devices with serial interfaces and intelligent sensors with integrated signal processing The purpose of these components is to directly digitize and condition the measurement signals at the transducer location Using digital transducer electronics AED9201B you can connect SG transducers in a full bridge circuit directly to a computer or a PC This enables you to configure complete meas urement chains quickly and with little
11. ON etatis tate teet te set a ta edd ee e ud uda UE 11 6 M M 11 13 6 WIre COD ne clon iaa iaa aaa aaa aaa 9 11 B BASICS DOC amis na nr rr nea 7 bridge exeitation voltage AR AA 9 11 13 bridge A 11 12 bus A E AA ML ANM 18 ET D C 18 Dusline oe EA LER AV Eh Lh t aaah IM 18 DUS ntfsjo E EEEE CH 16 18 485 avant Ci CA 6k C LC LC Le tute LEE Le LLL eL E eL EE LLL EE ECCE 18 19 bus termination RR 18 bus t rmination ptet 8 E E E E E E A E dr E E aire Donee at d Fa 18 cable CONNECHON 22 Cable connection digital AnpUls 22 Supply Voltage iie HE E UO RE eR SR EIE ATL ARS 26 cable connection supply voltage 201 c ettet tb b e be ha n Ot Oba ta n ra e e M ds 14 26 56 656 iona natn AAA tod aC eoe Do Du D A DCN DLL DX IT Dos EE ao 12 cable
12. User Manual AED9201B Digital Transducer Electronics Basic Device RS232 or RS485 I W 5 11693 2 0 en Content 1 Typographical CONVENIOS 4 4 eed a uu Cn 3 Important INFOMATION aiii cin 4 Sri a 5 1 Introduction appropriate 86 e ek E CERE eC ER SERE 6 2 Mechanical construction Lecce eee eee eee nn enne nnne nn 7 3 Electrical connections ba idea 8 3 4 Transducer 8 3 2 Connecting the supply 14 3 37 lt CONNECTION to COMPU E ius 15 3 4 Multi channel measurements bus mode 5485 18 3 5 Connecting the diagnostic 20 3 6 Connecting digital inputs outputs 00 eee cece cece 22 3 7 AED9201B cable connection via PG 26 A a a a e a aaaea aaa a a a aAa aaaea Aa eaea deea 27 AED9201B en HBM HBM AED9201B en Typographical con
13. cludes these bus termination resistances do not deacti vate them These terminations must not be activated more than twice in one bus The wiring must not be in the shape of a star The best wiring method is to loop the physical circuit through from AED to AED The basic device has 2 PG cable entries for this The ground of the interface driver is related to the GND terminal The interface driver of the master should be also connected to this GND The quiescent level on the RS485 physical circuit is produced in 4 wire mode at TA gt 0 35 V Rest level though AED termination resistances RA gt 0 35 V Rest level though Master termination resistances As the RS485 is a differential bus interface the rest level is also specified as a differential voltage between the lines and not ground related Furthermore please note that this inter face tolerates a maximum common mode range of 7 V HBM 20 Connecting the diagnostic bus 3 5 Connecting the diagnostic bus The diagnostic bus is used to analyze dynamic processes The bus is set out as an RS485 2 wire bus lines TB RB and TA RA GND
14. d via this bus Parameters Read only changes are not possible Measured values Reading individual measured values MSV 5 not possible Results Trigger results and dosing results can be read The diagnostic functions can be executed using the HBM AED Panel32 program as from Version V3 0 0 The HBM display unit DWS2103 can be connected with this interface Than all implemented functions and parameters are accessible This is independent from the main communication channel HBM 22 3 6 HBM Connecting digital inputs outputs Connecting digital inputs outputs The measuring amplifier is electrically isolated from the supply voltage the interface connec tion and the digital l Os These connections relate to the GND potential of the external supply voltage IN2 IN1 a o 24 0v pa pe External power pack 2 X AED9201B KL4 External load KL1 KL2 IN2 H IN1 L E H H H f Ug 8 30 V UB RS485 RS232 D 2 SSS SSS
15. extra work The AED9201B basic device contains the AD103C amplifier motherboard It provides me chanical protection shields the amplifier board EMC protection allows you to select the RS485 or RS232 serial interfaces and implements full electrical isolation of all connections The AD103C amplifier motherboard is not included in the scope of supply of the basic device and must be ordered separately Two digital inputs and six digital outputs allow e processes to be controlled via four limit values LIV1 4 e triggered measured values MAV to be determined afilling or dosing process to be controlled The PC software AED PANEL 3215 available to facilitate parameter settings to display dy namic measurement signals and for comprehensive analysis of the dynamic system The HBM display unit DWS2103 can be connected to all AED basic devices All basic devices of the AED family can be connected with the digital display unit DWS2103 This unit supports all implemented functions of the AED The amplifier motherboard AD101B can also be used spare part All commands are described in the help file aed help e The abbreviation AED is also used for transducer electronics in the following text Strain Gage AED9201B en Mechanical construction 7 2 Mechanical construction The basic device extends the functionality of the AD amplifier boards and provides e mechanical protection IP65 e the power supply for the amplif
16. help e AD103C Descrip tion of the basic commands The production number is set at the factory and cannot be changed The transducer connection must always be assigned It is essential for a transducer or a bridge model to be connected up for operation AED9201B en Safety instructions Safety instructions AED9201B en There are not normally any hazards associated with the product provided the notes and instructions for project planning assembly appropriate operation and maintenance are observed Each time before starting up the modules you must first run a project planning and risk analysis that takes into account all the safety aspects of automation technology This particularly concerns personal and machine protection It is essential to comply with the safety and accident prevention regulations applicable to each individual case Installation and start up must only be carried out by suitably qualified personnel Do not allow the equipment to become dirty or damp During installation and when connecting the cables take action to prevent electrostatic discharge as this may damage the electronics The required power supply is an extra low voltage with safe disconnection from the mains When connecting additional devices comply with the local safety requirements All the interconnecting cables must be shielded cables The screen must be connected extensively to ground on both sides The power supply and digital
17. hield radially Remove outer sheath of cable to expose required length of wire L Slide cable screw connection with sealing ring and clamping rings over the end of the cable Push the ground sleeve as far as it will between the strands and the cable shield press the shield onto the sleeve flange cut off any excess strip the insulation from the ends of the wires and tin them Shorten the cable shield and bare the strands Slide the cable as far as it will go trough the intermediate supports on the housing push on the cable screw connection and tighten securely Fig 3 7 1 Cable connection via a PG gland Only a connecting cable with a screen grounded on both sides and metal connectors should be used as the connecting cable between the AED9201B and its partner device Bring the screen extensively into contact on both sides at the PG gland and at the metal shell of the connector If the partner device does not have a metal connector connect the cable shielding extensively to ground If there are vast differences between the ground po tential of the AED9201B and its partner device a potential equalization line must be provided in addition HBM AED9201B en Index 27 Index 4 ARO iets seen atu I 11 13 ta 9 10 A WIPE CONMECH
18. ier motherboard and transducer excitation 5 Vpc e total transducer bridge resistance 80 4000 Q e achoice of serial interfaces RS485 4 wire or RS232 electrically isolated from the am plifier e digital inputs outputs electrically isolated from the amplifier e EMC tested e Diagnostic bus Amplifier AD10x Digital plug in connector connections and Diagnostic bus Transducer Interface Power supply connection changeover and Interface connections Fig 2 1 Mechanical construction AED9201B without amplifier The amplifier motherboard is designed as a plug in board that can be plugged into the carrier board of the basic device via a 25 pin D connector The basic device contains terminals for the transducer power pack and interface connections slide switches for interface selection and the voltage stabilizer The connection cables exit the casing via PG glands on the side AED9201B en HBM 8 Electrical connections 3 Electrical connections A connection diagram is attached inside the lid of the AED9201B basic device beyond the connection terminals risk that loops may form Please make sure that the cable shielding is properly connected to the PG gland see the AED9201B cable connec tion via PG glands section 1 When making the connections please ensure that the wires of the cable do not protrude If it should be necessary a separate cable can be used to establish potential equalization between the t
19. ish potential equalization between the bus nodes The cable shielding must not be used for this potential equalization For reasons of electromagnetic compatibility it is advisable to use a double shielded cable from the HBM program for example 3 2 0 14 m 4 3301 0076 Us 18 30 Interface converter RS232 RS485 PC COM port RI E i RxD TxD Hem wagetechnik GmbH 1 o H RS 485 Bus AED 9201B TxD RxD Power mie TA TA blue GND lt lt TB TB black SUB D connector SUB D female connector RA RA green 9 pin PC 9 pin converter PIN pu PIN RB RB grey 2 RxD 2 TxD GND ___ 3 TxD 3 RxD GND white 5 GND 5 U U red 18 30 Vig Equivalent Interface marking TA T TB T RA R RB Fig 3 3 3 Connecting an AED to a computer via RS232 and the supply voltage Die DTR control line for communication with the AED is not required AED9201B en HBM 3 4 HBM Multi channel measurements bus mode RS485 Multi channel measurements bus mode RS485 With the RS485 interface several AEDs can be connected to a common bus line The bus cabling for 4 wire mode is shown in Fig 3 4 1 With the RS485 interface up to 90 AEDs can be connected to a common bus line With the aid of the RS485 bus driver it is possible to implement long cables up to 1 093 61 yd in length AED
20. m H ours OUT6 KL6 _ KL5 Pr Us 18 30 V Us H ees RS485 RS232 1 12 P Fig 3 6 2 Connection of digital I Os inputs IN1 2 not electrically isolated from Us same power pack IN1 trigger Digital outputs OUT1 6 are electrically isolated from the amplifier and are supplied via Us They are implemented as H side switches Consequently consumers must be connected to ground see Fig 3 6 2 The outputs are short circuit proof and can drive ohmic and induc tive loads with currents up to approx 0 5 A per output Logic level OUT inactive voltage is Low H side switches deactivated OUT active voltage is High H side switches activated The functions of the digital inputs and outputs differ in accordance with the type of measuring amplifier used HBM 24 Function of the digital inputs outputs Connecting digital inputs outputs The AD103 amplifier board has two inputs and 6 outputs The functions are defined using commands IMD LIV and OMD see aed_help_e AD103C Description of the commands for signal processing Description of the commands for filling and dosing applications Input functions IMDO Input functions deactivated possible to read in the status using the POR command IMD1 IN1 external trigger for the trigger function TRC IN2 taring and changing over to net IMD2 IN1 Stop filling IN
21. n RD red white GY grey BK black Fig 3 1 4 Transducer connection in 4 wire circuitry without a cable extension jumpers 2 2 and 3 3 AED9201B en Transducer connection 11 When connecting several transducers it is advisable to use an HBM junction box VKKx In general the feed lines running to the AED should be shielded cables Notes on type of connection length and cross section of cables Depending on the bridge resistance of the load cell being used and the length and cross section of the load cell connection cable there may be voltage drops that can reduce the bridge excitation voltage The voltage drop at the connection cable is also dependent on temperature copper resistance Likewise the output signal of the load cell changes in pro portion to the bridge excitation voltage 6 wire circuit standard mode of operation This will correct all the effects of the load cell cabling up to the feedback points Even chang ing the length of a cable after calibration will not make any difference to the measurement results For load cells with a 6 wire connection feedback lines 2 and 3 are bridged in the load cell with excitation 2 and 3 Fig 3 1 2 For load cells with a 4 wire connection the feedback bridges must be implemented directly at the load cell connection Fig 3 1 3 or 3 1 4 4 wire circuit As correction through AUTOCAL can only ever take place up to feedback points 2 3 all the
22. or an 80 bridge resistance 9201 j HO KL6 H Us 18 30 V HH LU 3 Ly RS485 RS232 F TE E J Fig 3 2 1 Power supply connection The voltage feed must be shielded It can be applied within the interface cable or be imple mented as a separate cable When supplying several AEDs via one cable the voltage drop over the cable must be taken into consideration The voltage drop depends on the supply current required and on the line resistance HBM AED9201B en Connection to a computer 15 3 3 Connection to a computer The basic device can be set to two interface variants changeover switch on the AED9201B board Mi AED9201B KL6 KL5 KL4 ES SSS SSS RS485 RS23
23. ransducer and the AED and between the AED and the Master control unit grounding concept The cable shielding must not be used for this potential equalization 3 1 Transducer connection A The transducer connection must always be assigned connect the transducer code HBM Pin green wie e Bridge excitation voltage black Cable shield Cable braid Fig 3 1 1 Transducer connection in 6 wire circuitry HBM color coding HBM AED9201B en Transducer connection AED9201B en You can connect SG transducers in a full bridge circuit with a total bridge resistance of Rs 80 4000 With a transducer resistance of gt 1000 increased noise measurement ripple must be taken into account Excitation voltageU 5 V Current consumption lt 175 mA 036 Bridge resistance Raz Output current of outputs 1 6 The bridges are supplied with power in the AED9201B basic device 5 Vpc The bridge exci tation voltage is electrically isolated from the external supply voltage The 6 wire connection avoids the effect of a long cable on the measured value When several transducers and a junction box are used the 6 wire circuitry is routed to the junction box
24. tsoever 11693 2 0 en Hottinger Baldwin Messtechnik GmbH Postfach 100151 D 64201 Darmstadt Im Tiefen See 45 D 64293 Darmstadt Tel 49 6151 803 0 Fax 49 6151 8039100 E mail support hbm com www hbm com HBM measurement with confidence
25. ventions 3 Typographical conventions For clear identification and improved legibility the following conventions have been used in this documentation A Important paragraphs are marked with a symbol to draw attention to them C CE Designation Statutory marking requirements for waste disposal Italics Points out external documents and files File gt Open All menus and menu commands appear in quotes here the File menu and the Open sub menu Start Quotes and italics are used for buttons input fields and user input MSV All commands are set out in a bold font style or as a link to the command description AED9201B en HBM Important information Important information HBM A Neither the design of the device nor any technical safety aspects may be modified without the express permission of Hottinger Baldwin Messtechnik GmbH Any modification ex cludes Hottinger Baldwin Messtechnik GmbH from any and all liability for any damage re sulting therefrom It is strictly forbidden to carry out any repairs and soldering work on the motherboards or to replace any components Repairs may only be carried out by persons authorized thereto by Hottinger Baldwin Messtechnik GmbH All the factory settings are stored safe from power failure at the factory not in the measur ing amplifier where they can be deleted or overwritten They can be reset at any time by using the command TDDO For more information see file aed
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