Operating Manual
Contents
1. 4 Zero operating mode The amplifiers in the MGA II System are easily replaced ME10 1 When internal calibration is finished move sliding switch to position BM ZERO check amplifier zero point 2 The zero value set is displayed and corresponds to the suppressed previous load tare value Example ZERO Tare value 0 1 mV V MEAS 2 mV V 2000 kg 0 1 mV V 100 kg RANGE Zero 100 kg is displayed negative tare load D FINE 3 Note this value Fel 4 Switch amplifiers 2 6 22 5 Move sliding switch to position ZERO i L PE 6 Set polarity with switch S23 For positive indication to minus for m P23 negative indication to plus D 7 With switch S22 set the value noted previously as precisely as 522 possible p 8 With P23 set the display precisely to the noted value 100 e z S23 9 The amplifier has now been matched to the transducer s zero point 0 lt The amplifier can now be calibrated with the internal calibration signal see pag 8 9 MGA Balancing Range gt Measuring frequency range 5 Measurement frequency range Cut off frequency ME30 ME50 The amplifier s Butterworth low pass is factory set HBM ME10 ME30 ME50 ME50S6 S24 3 6 MGAII 0 500 Hz 0 60 Hz 0 500 Hz 0 250 Hz You can change the measuring2. 25V Rg26 19 mH 30 3 If the 5 is used with 5101 safety barriers ensure that the bridge supply voltage is 1 V and that switch S29 is in the Full position bridge MGA Balancing Range Zero balancing 1 2 Zero balancing M lt 5 m ZERO MEAS RANGE J FINE N 1 D Domo A MGAII P23 S22 S23 Perform zero balancing before the first measurement and after each alteration to the measurement set up 1 Leave sliding switches in the MEAS position during balancing 2 Set the polarity with switch S23 Set to minus for positive and plus for negative indication 3 Coarse balancing With switch S22 set the smallest possible display value The balance range for ME10 and is approx 2 mV V for 50 80 mV V 4 Fine balancing With P23 set the display precisely to zero Example Display on DA12 1 437 S23 to S22 as close as possible to zero e g 0 123 With P23 set to 0 000 Balancing Range Setting a range D 5 2 Setting a range Using the adjustment controls on the operating panel RANGE P21 P22 match the sensitivity of the amplifier to the transducer signal Hem ME10 Try to set the measuring range so as to utilise the amplifier s dynamic
3. range 10 V as fully as possible Range coarse ZERO on Using internal DIP switches the two ranges can be set independently to Ne the transducer s nominal sensitivity SN RANGE Factory settings ME10 1 2 mV V P21 MB2 0 2 mV V P22 re Range Switch S24 4 External E am MB1 2 mV V OPEN re Connect contacts 4 MB2 0 2 mV V mi CLOSED and 22 from Bu2 TUS see pagg 8 10 ME50 MB1 80 mV V MB2 8 mV V Range Switch S24 4 External ME30 ME50 HEM MB1 80 mV V OPEN E Connect contacts 4 MB2 8 mV V m CLOSED and 22 from Bu2 110 524 4 MGA D 6 Balancing Range Setting a range ME10 ME30 Pre setting of the ranges in the range 0 2 mV V 4 mV V for Up 5 V ME10 ME30 0 4 mV V 8 mV V for Ug 2 5 V ME50 is possible S26 S27 with switches S26 and S27 as shown in the following tables Ld 25V 5V Up 10V MB1 S26 MB2 S27 0 34 0 48 0 17 0 24 0 09 0 12 8 m im m 1 0 ES 0 44 0 64 0 22 0 32 0 11 0 16 m m
4. m 0 60 0 84 0 30 0 42 0 15 0 21 q m m mV mv mw 1102 3 4 5 6 7 8 m 1 04 1 46 0 52 0 73 0 26 0 37 m m iy m F 1 36 1 94 a 0 78 1 1 0 39 0 55 0 20 0 28 m m 1 80 2 56 0 90 1 28 0 45 0 64 m 2 36 3 38 1 18 1 69 0 59 0 85 mi 3 12 4 46 1 56 2 23 078 112 m OPEN 4 14 5 88 2 07 2 94 1 04 1 47 B m Pm 0 68 0 97 0 34 0 49 m j 5 5 m 5 46 7 76 2 73 3 88 1 37 1 94 Jm m F CLOSED 7 22 10 26 3 61 5 13 1 81 2 57 m ja The range should be set so that the nominal value of the transducer see identification plate is within one range in order thereby to obtain the greatest possible output signal Example Force transducer 100 N at 2 mV V Range setting 1 56 2 23 mV V MGA Balancing Range Setting a range ME50 526 527 B ____ 0 n OPEN CLOSED Ug 1V 22 5 V MB
5. Before measurement takes place the amplifier must be matched to the transducer and balanced 1 1 Excitation voltage Factory settings ME10 50 ME50S6 5V 5V 25V 25V Us 5V Default setting for strain gage transducers Up 2 5 V Rated excitation voltage for HBM inductive transducers 1V For inductive transducers with high output signals or when using the ME50 with safety barriers or with very small sensors You can alter the bridge supply voltage using the S25 switch on the amplifier motherboard ME10 mid ME10 S25 Up Bridge resistance 1 2 3 25V gt 60 40000 OPEN m i 5V gt 110 4000 CLOSED m 10 V Rg gt 220 4000 Q m E 525 MGA Balancing Range Zero balancing ME30 525 50 525 Bridge resistance Switch S25 25 V gt 60 4000 Q COUI 5V gt 110 4000 Q JC Te ME50 Up Bridge resistance Switch S25 Switch S29 1V Rg22 5 20 mH ICT
6. HBM amplifiers output area The decimal point is selectable disconnectable via plug in jumpers St21 St22 on the DA12 motherboard Select decimal point DA12 motherboard Dec point Display St22 ADR Unscrew DA12 front panel oo 10000 V Lift cap off the rotary switch and unscrew o eM rotary switch with socket spanner EC NDS 10V Unscrew motherboards access to ST21 22 free 00 1V Remove jumper no decimal point 5121 Plug jumper in Decimal point be moved to any nn position g E 22 MGA Introduction gt Structure of the MGA II device Control elements for the amplifier plug in units Amplifier type 10 DC amplifier strain gauge transducers measurement frequency range 0 10 kHz ME30 600 Hz carrier frequency amplifier for strain gauge transducers ME50 4 8 kHz carrier frequency amplifier for inductive transducers ME50S6 4 8 kHz carrier frequency amplifier for strain gauge transducers Range fine Fine balancing of the ranges Operating mode Selection of Zero Measure Calibrate operating modes Zero balancing fine Fine balancing of the zero point Zero balancing coarse Coarse balancing of the zero point Polarity Setting the polarity of the balanc
7. frequency range by repositioning DIP switches 524 3 and 524 6 ME10 Measurement 24 3 24 6 frequency range 0 2 Hz 1 dB OPEN fg 2 5 Hz 3 dB OPEN 0 500 Hz 1 dB fg 675 Hz 3 dB m CLOSED OPEN 0 10 kHz 1 dB fg 20 kHz 3 dB without effect m CLOSED ME30 Measurement S24 3 frequency range 0 60 Hz 1 dB CLOSED fg 80 Hz 3 dB 0 2 Hz 1 dB fg 2 5 Hz 3 dB Balancing Range Measuring frequency range ME50 Measurement frequency range S24 3 0 500 Hz 1 dB fg 675 Hz 3 dB CLOSED 0 2 Hz 1 dB fg 2 5 Hz 3 dB OPEN MGA D 14 Balancing Range gt Measuring frequency range MGAII Index E Index B Bridge supply voltage D 2 C Calibration 9 Coarse balance 4 Connecting a strain gage full bridge B 5 Connection boards B 4 B 10 C 3 Cut off frequency D 12 D Decimal point A 7 E Earthing switch B 2 End phase module EM001 B 11 F Fine balance D 4 Four wire connection B 4 B 6 G Greenline B 3 Guidelines A 2 Internal calibration signal D 9 M MASTER B 12 Measuring frequency range D 12 R Range D 5 Range fine D 8 Remotes B 10 S Safety barriers B 7 D 3 Safety instructions 5 residual danger
8. of the following points when putting the system together The amplifier plug in units are inserted from the front the associated connection boards from the back It is important to ensure correct allocation during this step If using wide connection boards 8 divisions you must plug these into slots 1 5 etc Slots 2 4 6 etc on the front panel must be fitted with blanking plates On safety grounds all unused slots amplifiers or connection boards must be covered over with blanking plates e Check that all amplifiers and connection boards are firmly plugged in e Connect the device to the mains supply with the mains cable provided Connect your transducer to the jack provided on the connection board reference BUO1 If you use a cable you have made up yourself please adhere to the pin assignment for your transducer as shown in Section B Connections Also observe the safety instructions MGA C 4 Commissioning Switching on 1 2 Switching on e Switch the device on with the POWER button on its front panel HBM HOTTINGER BALDWIN MESSTECHNIK DA 12 When the DA12 is initialized at which time all LEDs light up for a moment it notes the components present If no transducer is connected an overflow is displayed Switching on MGA Balancing Range D 1 D Balancing Range MGA Balancing Range Zero balancing 1 Balancing
9. that adequate pro tection or locking against unintentional actuation is provided such as access checks pass word protection etc The MGAII must be positioned such that the mains connection can be accessed and the device disconnected from the mains at any time Do not operate the device if the mains cable is damaged If an amplifier channel is to be withdrawn close off the plug in unit with a blanking plate Built in devices must only ever be operated whilst they are within the housing provided for them The device complies with the safety requirements of DIN EN 61010 Part 1 VDE 0411 Part 1 Protection Class Introduction gt Notes on documentation A 1 A Introduction MGAII Introduction gt Notes on documentation Notes on documentation MGA This Manual contains all the information you need to operate the MGA Il There are several guidelines available to you e Each Section starts with a list of its contents e The header tells you which Section or sub section you are currently reading Example Connections Transducer B 15 e The page numbering is linked to capital letters which correspond to the Section headings Symbols used in this manual Symbol C Meaning CE mark The CE mark enables the manufacturer to guarantee that the product complies with the requirements of the relevant EC guidelines the Declaration of Conformity can be found at http www hbm com HBMdoc Introduc
10. the zero operating voltage to the PEL earthing point through a separate line MGA Connections Outputs and remotes Outputs and remotes 3 1 Connection boards AP01 AP03 AP05 AP11 000000000000 Bu2 OUTPUT OOOOOOOOOOOO OOOOOOOOOOOOO 13 25 OOOOOOO ss Bu 2 Outputs OUTPUT MGA Connection boards for the amplifier channels are plugged in at the back of the desktop housing The jacks on these connection boards provide you not only with connection facilities for the transducer but also with several output and control signals depending on the chosen option The connection boards contain a 25 pin jack designated Bu2 The pin assignment of the jack for connection boards AP01 05 11 is shown in the following diagram ol Zero operating voltage Zero balancing external Range 1 fine external Operating mode Calibrate 105 Switch MB1 MB2 to LL Operating mode ZERO toBL Option voltage or current output switchable 10 V l 20 mA 4 20 mA Output Us 10 V Ra gt 5 aL Fig B 1 Bu2 pin assignment Connections Outputs and remotes APO1 Bud End phase module Bu3 End phase modu
11. 1 S26 MB2 S27 mV V mV V 3 4 5 8 17 0 24 0 6 8 9 6 22 0 32 0 8 8 12 8 m C 30 0 42 0 12 0 16 8 39 0 55 0 15 6 22 0 m m z 52 0 73 0 20 8 29 2 s 68 0 97 0 27 2 38 8 m 90 0 128 0 36 0 51 2 118 0 169 0 47 2 67 6 m 156 0 223 0 62 4 89 2 a 207 0 292 5 82 8 117 0 NE au 272 0 387 5 109 0 155 0 m 360 0 512 5 144 0 205 0 m m MGA D 8 Balancing Range Setting a range CTS Range fine Both ranges can be separately fine tuned with P21 P22 ZERO D FINE 1 21 1 P22 re Le 0 ME50 154 2 gt 21 gt L 5 gt 17 gt 18 gt 19 gt L Bu2 HBM MGA II S24 1 2 MB2 In this case corrections up to 35 relative to the set range are possible A ABS NOTE If the factory calibration of MB2 0 2 mV V or 8 mV V is to be retained P22 must not be altered For MB1 it is also possible to perform fine setting by means of an external potentiometer approx 35 of the set range To do this reset switches S24 1 2 as per the following table and connect the potentiometer to contact
12. 5 pin cable plugs DB 25P connecting plug 25 pin cable plug with housing and fixing accessories for output and control signals DB 15P connecting plug 15 pin cable plug with housing and fixing accessories for transducer port D25 BNC 2 connecting plug with BNC jack EM001 end phase module switchable to impressed voltage or impressed current can be plugged on to connection boards MGA Introduction gt MGA II housings MGA Protection class The degree of protection given in the technical data indicates the suitability of the housings for various ambient conditions and also the protection of persons against potential risks when used The letters IP International Protection which are always present in the designation are followed by two digits These indicate which degree of protection a housing offers against contact or foreign bodies first digit and moisture second digit The MGA II System is available in housings with degree of protection IP20 as per DIN EN 60529 IP 2 0 Code index Degree of protection against Code index Degree of protection against water contact and foreign bodies Protection against contact with No water protection fingers protection against foreign bodies with gt 12 mm Complete protection against contact Protection against water jet nozzle protection against penetration of dust from any angle Introduction gt Structure of the MGA device 7 3 Stru
13. B0599 3 7 en Operating Manual Amplifier System MGA with Digital Display DA12 I S Contents Safety instructions nee 5 AT INIFOQUCHON We ee Rei etai bd cae a ened A 1 1 Notes on documentation mann an nun nn eee eee eens A 2 2 see Sugeest e dd tu A 4 3 Structure of the MGA Il device eee eee eee eee nenne A 7 3 1 Control elements for the digital indicator A 9 3 2 Control elements for the amplifier plug in A 10 3 3 Component location diagrams connection boards A 11 3 4 Component location diagrams ME10 ME50 ME50S6 A 14 A GOndilions on site ee a RE A 15 5 Maintenance and cleaning E AA A A 16 B Connections u anne B 1 1 Mains connection nee B 2 1 1 Shielding designi Yin A a a N RR anaes B 3 2 Connecting transducers 5 sn a a ai B 4 2 1 Connect strain gage full bridge B 5 2 2 Connect inductive half bridge B 6 2 3 Intrinsically safe transducer port B 7 2 3 1 Electrical connection to 05 B 8 3 Qutp flssand rem tes m a EIE E EE B 10 3 1 Connection boards APO1 APO3 AP
14. O5 11 B 10 4 Synchronisation and MESO only B 12 C COMMISSIONING tote ae 1 Eee 2 1 1 Devices in the desktop housing and module frame C 3 e SSWIICHING acrior ce SS l akka onde ceo en asi Sta C 4 MGAII Bal ancing Range uu ay ee ceo Ae pu pu ae eee tes D 1 b Balancing idad nda race deos Gehe and ae Fi e c D RU HR C Pd do D 2 1 4 Excitation voltage cie ED XR VITE Eu ers e Ium er D 2 1 27 Zero balancing a ci EIE SAX Sete eR e usa S EPI VY D 4 2 Selling arange urn ern EI RIEN VI ERE Rd D 5 3 Calibrating the measuring chain lseeeeeeeee II D 9 4 ero operating mode x 335 ce i qx on tcu E va ceca M tec S A C b Y D 11 5 Measurement frequency range Cut off frequency D 12 E MA Ar E 1 MGA II Safety instructions Use in accordance with the regulations The amplifier system is to be used exclusively for measurement tasks and directly related control tasks Use for any purpose other than the above shall be deemed to be not in accor dance with the regulations To ensure safe operation the device may only be operated in accordance with the informa tion given in the User Manual It is also essential to comply with the legal and safety require ments for the application concerned d
15. PCB must be set 1st channel accordingly Setting S28 Slave n Master i m ME30 5 S28 R37 R24 If in the the case of the MASTER amplifier no transducer is connected by six core circuit the bridge supply voltage leads must be connected to the sensor conductor by jumpers at the connecting plug or by internal 100 kOhm resistors on the amplifier circuit board e Inthe case of ME30 and ME50 solder bridge between R24 and R37 Connecting Synchronising SY 02 s Device 1 Kab 1 Kab251 0 5 SY 02 Device 2 Device 3 Synchronising more than 2 devices with ME30 and ME50 You can synchronise any number of devices via the SYNCHR jacks e Set the switch SY02 on the first device to MASTER likewise S28 on the amplifier motherboard Channel 1 s28 ME30 ME50 528 MASTER La e Onall succeeding amplifier plug in units set the switch S28 to SLAVE likewise switch SYO2 on the succeeding devices S28 ME30 ME50 _ 528 11857 SLAVE ifi e Connect all devices together via the synchronisatio
16. cture of the MGA Il device Connection boards APO1 APO2 AP05 AP11 End phase module option ns _______ Power pack DA12 digital indicator Amplifier plug in units ME10 ME30 ME50 ME50S6 Fig 3 1 Overall structure of the MGA Il device MGAII Introduction gt Structure of the MGA II device Synchronisation Earthing switch Output Transducer port dd 8201 Hei BLOT SY02 1 1 So H1 So EH FH 33 33 33 3 ARI Blanking Connection plates Mains boards connection Chassis ground Fig 3 2 Rear of device section MGAII Introduction gt Structure of the MGA II device A 9 3 1 Control elements for the digital indicator e Digital display 4 1 2 position 7 segment display Channel selector switch Selection of the required measurement channel Mains POWER A switch Fig 3 3 DA12 digital indicator The four and a half position digital indicator displays the nominal value at 10 V This corresponds to the
17. e voltage Fig 3 4 Front panel amplifier plug in unit MGAII Introduction gt Structure of the MGA II device A 11 3 3 Component location diagrams connection boards Base for EM001 end phase module 51 52 20 Bu2 Fig 3 5 Connection board AP01 MGA Introduction gt Structure of the MGA II device S301 1 S303 2 Base for EM001 end phase module S302 1 5304 2 Fig 3 6 Connection board 5 MGAII Introduction gt Structure of the MGA II device A 13 Base for EMOO1 end phase module 5302 1 S304 2 9301 1 1 1 303 2 Fig 3 7 Connection board AP11 MGA A 14 Introduction gt Structure of the MGA II device 3 4 Component location diagrams ME10 ME30 ME50 ME50S6 S26 S27 BR3 BR4 HBM St21 e S21 P23 s22 S23 6385 251 254 S24 252 Fig 3 8 Com
18. eitshinweise sind wie folgt aufgebaut Art der Gefahr Folgen bei Nichtbeachtung Gefahrenabwehr Warnzeichen macht auf die Gefahr aufmerksam Signalwort gibt die Schwere der Gefahr an siehe folgende Tabelle Art der Gefahr benennt die Art oder Quelle der Gefahr Folgen beschreibt die Folgen bei Nichtbeachtung Abwehr gibt an wie man die Gefahr vermeidet umgeht Gefahrenklassen nach ANSI Warnzeichen Signalwort Bedeutung kennzeichnet eine gef hrliche Situation in der Tod oder schwere K rperverletzung eintreten k nnen wenn sie nicht vermieden wird kennzeichnet eine gef hrliche Situation in der leichte bis mittelschwere K rperverletzungen eintreten k nnen wenn sie nicht vermieden wird Sachsch den Das Produkt oder die Umgebung HINWEIS k nnen besch digt werden A Auf dem Modul Bedeutung Angaben in der Bedienungsanleitung ber cksichtigen MGAII MGAII Information about CE labelling The devices in the MGA II range carry the CE label and satisfy the requirements of EU guideline 2004 108 EG Elektromagnetic compatibility and of the Low Voltage Directive 2006 95 EC admits listed harmonised European standards EN The EU declarations of conformity according to the above mentioned EU guideline Article 10 for the relevant authorities are available from HOTTINGER BALDWIN MESSTECHNIK GMBH Im Tiefen See 45 D 64239 Darmstadt The MGA Il system devices are designed for industr
19. ial and domestic applications domestic area business and trade small scale enterprises and fulfil the requirements for interference immunity and for emisssion according to EN61326 1 2006 In addition to the details given in the operating instructions the following information should be taken into account when operating the device The connecting cable must be screened and the screen must be connected flat on the connector housing If system components e g plug in cards are supplied separately then the operator must ensure that they are used in a HBM system housing or in an equivalent housing Working safely Error messages should only be acknowledged if the cause of the error is removed and no further danger exists The instrument complies with the safety requirements of DIN EN 61010 Part 1 VDE 0411 Part 1 Protection Class To ensure adequate immunity from interference use only Greenline shielded ducting see HBM offprint Greenline shielding design EMC compliant measuring cable downloadable from the Internet at http www hbm com Greenline Conversions and modifications The measuring amplifier system must not be modified from the design or safety engineering point of view except with our express agreement Any modification shall exclude all liability on our part for any damage resulting therefrom In particular any repair or soldering work on motherboards is prohibited When exchanging any modules only o
20. ignal you always receive a fixed value for checking irrespective of the transducer load MGAII Balancing Range Calibrating the measuring chain MGAII P21 P22 Method B Direct loading of the transducer A defined load is applied to the attached transducer The accuracy of this calibration depends on the calibration weighting end measure in the case of displacement transducers 1 Set sliding switch to position MEAS during the calibration task 2 Select a range such that the amplifier is driven to the maximum possible extent by the calibration load 3 Apply a defined load to the transducer 4 With potentiometer P21 set the display so as to bring about a reference to the load quantity You can display a mechanical load at the correct digital and numerical value The same procedure can be followed with P22 MB2 the factory calibration 0 2 mV V ME50 8 mV V will be lost Mechanical calibration can be simulated electrically using a calibrator Example Transducer Load cell with nominal load 10kg Nominal characteristic 2 mV V Calibration load 5 kg For Range 1 With P21 set display to 5000 d 1d 1 g For Range 2 proceed similarly using P22 Balancing Range Zero operating mode D 11
21. ions Transducers B 5 2 1 Connect strain gage full bridge Amplifier ME10 MESO ME50S6 wh n Measuring signal bk Excitation voltage bu Excitation voltage rd Measuring signal 4 Cable shielding 1 gn Sensor circuit gy Sensor circuit 1 see EJ3 AP01 B 6 152 Case 135 1251 Wire colours wh white bk black bu blue rd red ye yellow gn green gy grey AP03 B Case GH AP05 9 0000 0000 0000 oooQ AP11 3 gt 4 gt Casg 654 MGA B 6 Connections Transducers 2 2 Connect inductive half bridge Amplifier MES5O APO1 AP03 AP11 wh Measuring signal 8 gt 12 bk Excitation voltage 5 gt B 2 gt 2 bu _ Excitation voltage oO _ Gol 1 24 cable shielding eel NETTE 3 __9 Sensor circuit HH amp 13 gt FH 5 gt gy Sensor circuit 125 GH 6 gt U 1 see B 3 Wire colours wh white bk black bu blue rd red ye yellow gn green gy grey MGA Il C
22. le 51 52 20 ot Sliding switch Plug in jumpers required output Switch position 51 ST 10 V s2 sr Any 1 ST o 20 s N FE 4 51 ST 20 mA 52 ST The chart above left shows the arrangement of switches the AP01 AP03 motherboard Each end phase module is assigned a sliding switch e g S302 1 and a plug in jumper The maximum possible number of EM001 end phase modules is two The switch position necessary for the required output signal is shown in the table underneath MGAII Connecting Synchronising Synchronisation ME30 and ME50 only SY 02 7 SYNCHR O MASTER lan I SLAVE MGA Switch Synchronisation jack Synchronisation is advisable when e the transducer cables of several devices have been laid side by side e the sensors are unshielded and bunched close together Synchronisation prevents beat interference due to carrier frequency differences All amplifiers within a device are basically synchronized with a built in master oscillator Synchronising 2 devices e Connect two devices through one of the SYNCHR jacks 1 Kab 251 on the SYO2 plug in unit e Setthe Master Slave switch on the plug in unit SYO2 to MASTER for one device and to SLAVE for the other In addition the switch S28 on the amplifier
23. n jacks If the device is not to be synchronised e onthe first device set the SYO2 switch to MASTER e switch S28 Channel 1 to MASTER Use the synchronisation cable Kab251 0 5 Accessories In the case of the ME10 amplifier synchronisation is not possible no CF amplifier MGA B 14 Connecting gt Synchronising MGAII Commissioning C 1 C Commissioning MGA Commissioning Switching on Commissioning MGA This chapter shows you the necessary steps to take in order to make your measuring system amplifier system and transducer ready for use You will then be in a position to carry out a function test of all components The various steps are deliberately explained in very general terms without going into detail about specific transducers or amplifier plug in units However it is very easy to apply the description to your own measuring system In some instances especially to do with connecting transducers reference will be made to later chapters We also warn about certain errors which can typically occur during commissioning After initially commissioning and adapting the amplifier plug in unit to your transducer you are in a position to get to know the other functions and facilities of the MGA II Amplifier System Commissioning Switching on 3 1 1 Devices in the desktop housing and module frame Ifyou have not yet received your complete amplifier system you should take note
24. onnections Transducers 2 3 Intrinsically safe transducer port The AP05 connection board is used for connecting strain gage transducers which are used through an intrinsically safe EEx ib circuit in areas subject to explosion hazard Three safety barriers double safety barriers for 6 lines separate the intrinsically safe from the non intrinsically safe circuit Strain gage full bridges can be connected to the AP05 connection board The following values apply to the intrinsically safe circuit Strain gage full bridge Voltage lt 22V Current lt 193 lt 1 0 W Attachable transducer resistors in the intrinsically safe circuit ME30 Up 5 V 300 4000 2 Up 2 5 V 100 4000 Q ME10 Up 10 V 600 4000 Up 5V 175 4000 2 Up 2 5 V 60 4000 Q MGA B 8 Connections Transducers 2 3 1 Electrical connection to AP05 MGAII In the case of strain gage full bridges a six wire connection must be used to attach the transducer A 6 core cable with light blue oversheath to identify the intrinsically safe circuit is used to connect the transducer The transducer s Inspection Certificate should be consulted to determine whether it is suitable for the intrinsically safe circuit present with the values specified in the Technical Data The PEL potential equalisation line terminals of the Zener barriers must be connected by the shortest path to the potential e
25. ponent location diagram ME10 ME30 ME50 ME50S6 1 with 2 on ME50 and ME50S6 3 not on ME10 4 onME10 MGA Introduction gt Conditions on site A 15 4 Conditions on site A CAUTION Protect desktop devices from moisture or atmospheric influences such as rain snow etc Ensure that the ventilation openings on the sides the openings for the electric fan on the back of the device and the openings on the underside of the device are not covered up Protect the device from direct sunlight Comply with the maximum permitted ambient temperatures specified for the system devices in the Technical Data For installation in 19 fitted cupboards because of the poorer heat dissipation suitable steps must be taken to ensure that the maximum permissible ambient temperature is not exceeded In all cases we recommend forced exhaust ventilation and in particularly critical cases clearances above and below the module frame Permissible relative humidity at 31 C is 80 non condensing reducing linearly to 50 at 40 C The devices are classed as overvoltage category II pollution grade 2 equipment MGA Introduction gt Maintenance and cleaning Maintenance and cleaning MGAII MGA II system devices are maintenance free Please note the following points when cleaning the housing A CAUTION Withdraw the mains plug from the socket before carrying out any cleaning e Clean the housing with a sof
26. qualisation cable shielding in the area subject to explosion hazard The cross section of this link must at least match the conductivity of 1 5 mm2 copper If the voltage between the PEL earthing point and the operating voltage zero point of the amplifier exceeds 1 2 V additional connection of protective conductor and operating zero may result in malfunctions in the amplifier This voltage should therefore be kept as low as possible by appropriate choice of protective conductor EN 255 Further guidance on transducer connection in areas subject to explosion hazard will be found in HBM publications SDO1A safety barriers for strain gage full bridges Connections Transducers B 9 Intrinsically safe transducer port strain gage full bridge Ug max 8 8 V 6 3 V effective Sensor circuit Excitation circuit BL Zero operating voltage Excitation circuit Sensor circuit B Measurement diagonal Ug max x 1 4 V 1 V effective Ry Cable resistance Rz 158 5 Barrier resistance Rp Bridge resistance Rz 1 5 Barrier resistance Re Earth resistance 15 155 Barrier resistance In normal operation no current flows through the Zener diodes in the Zener barriers or if cable and transducer are of symmetrical construction through Rg The potential equalisation line PEL is thus kept to the operating zero potential If malfunctions occur connect
27. riginal HBM parts must be used Qualified personnel means persons entrusted with the installation assembly commissioning and operation of the product who possess the appropriate qualifications for their function This instrument is only to be installed and used by qualified personnel strictly in accordance with the technical data and with the safety rules and regulations which follow It is also essential to comply with the appropriate legal and safety regulations for the applica tion concerned during use The same applies to the use of accessories Maintenance and repair work on an open device with the power on must only be carried out by trained personnel who are aware of the dangers involved MGA II 10 MGAII Safety requirements Before commissioning find out whether the mains voltage and current type specified on the identification plate match the mains voltage and current type at the place of use and whe ther the circuit being used is adequately protected Insert the mains plug only into a socket with a protection switch Protection Class 1 When connecting electrical devices to low voltage connect to extra low safety voltage only safety transformer in accordance with DINVDE 0551 EN60742 Before you open the device make sure it is switched off remove the mains plug from the socket Never pull the mains plug from the socket by the mains cable Automation equipment and devices must be covered over in such a way
28. s 5 SLAVE B 12 Synchronisation B 12 Z Zero balance D 4 Zero value D 11 Zero value D 11 MGA Hottinger Baldwin Messtechnik GmbH All rights reserved All details describe our products in general form only They not be understood as express warranty and do not constitute liability whatsoever Hottinger Baldwin Messtechnik GmbH Im Tiefen See 45 64293 Darmstadt Germany Tel 49 6151 803 0 Fax 49 6151 803 9100 Email info hbm com www hbm com measure and predict with confidence lt 7 Nr 2002 1300 B0599 3 7 en
29. s 17 19 of jack Bu2 rear of housing see also pagq 8 10 Range 1 fine Switches S24 142 External MB internal m CLOSED F OPEN _ factory setting 1 2 m OPEN m Potentiometer to MB1 external 5 CLOSED contacts 17 19 Balancing Range Calibrating the measuring chain D 9 3 Calibrating the measuring chain 0 21 22 Calibrating a measuring chain serves to maintain a clear cut relationship between measured and displayed value Here we explain two standard calibration procedures suitable for the MGA II System Method A Internal calibration signal The amplifier has an internal calibration signal of 1 mV V 0 1 8 mV V 1 for ME50 with which for the measuring range gt 1 mV V ME50 gt 8 mV V the amplifiers sensitivity can be adjusted 1 Set sliding switch to position CAL during the calibration task 2 Using potentiometer P21 for MB1 set the range so that the desired output signal appears Example 2 mV V 10000 Internal calibration signal 1 mV V 5000 Set output signal to 5000 MB2 has been calibrated at the factory to 0 2 mV V ME50 8 mV 205 If the setting of 2 is altered this value longer be set later using the internal calibration signal by balancing potentiometer P22 On calling the calibration s
30. t slightly damp not wet cloth You should on no account use solvent since it may damage the labelling on the front panel and the indicator box e When cleaning ensure that no liquid gets into the device or connections Connections Mains and battery operation B 1 B Connections MGAII Connections Mains and battery operation Mains connection Connecting to the mains Housing earthing system POWER AC 200W max e gt S NT030 B5 264V 40 65Hz YY XZ NA XZ 3 753 7 AN O CONNECTION OF CABLE 5 5 SEEOPERATION MANUAL Earthing switch MGAII The NT030 power pack is designed for connection to 230 V 115 V and for the maximum configuration of 16 channels It adapts automatically to the 115 V 230 V mains supply voltage The fan on the power pack is temperature controlled and automatically cuts out if necessary The power pack is protected with an internal 3 15 A T micro fuse CAUTION The power pack fuse may be changed only by the manufacturer s service personnel Earthing switch The earthing switch in the factory setting e links zero operating voltage to the protection circuit If external devices e g transducers computers already make this link and this causes earth circuits to occur hum pickup the earthing switch mus
31. t be opened 6 Mains connection Automation equipment and devices must be covered over in such a way that adequate protection or locking against unintentional actuation is provided such as access checks password protection etc The MGAII must be positioned such that the mains connection can be accessed and the device disconnected from the mains at any time Connections Shielding design 1 1 Shielding design GREENLINE Greenline shielding design HBM has developed the Greenline shielding design as an effective means of improved protection against electromagnetic interference The cable shielding is formed in such a way that the whole of the measuring system is completely enclosed in a Faraday cage ABS NOTE In the case of connection boards fitted with a terminal block AP05 please connect the cable shielding to the eyelet on the connection board MGA B 4 Connections Transducers 2 Connecting transducers Measuring signal When using double width connection boards AP03 05 only slots 1 3 Excitation voltage 5 7 9 and 11 can be occupied by an amplifier Excitation voltage IMPORTANT Transducers with four wire connection Measuring signal If you are connecting a transducer with 4 wire cable you must connect sensor circuit to the appropriate bridge excitation circuit in the Sensor circ
32. tion Notes on documentation Symbol Meaning Statutory marking requirements for waste disposal National and local regulations regarding the protection of the environment and recycling of raw materials require old equipment to be separated from regular domestic waste for disposal For more detailed information on disposal please contact the local authorities or the dealer from whom you purchased the product IMPORTANT Important information Indicates important information about the product or about handling the product TIP Information Instructions for use Instructions for use or other valuable information for the user MGAII Introduction gt MGA II housings 2 MGA II housings The MGA II System is supplied in various housings Desktop housing TG005 255x171x367 W x H x Din mm Desktop housing Module frame Maximum number of channels Supply voltage TG005 6 230 V 115 V TG007 12 230 V 115 V TGO11 2 230 V 115 V ERO07 12 230 V 115 V MGA Introduction gt MGA II housings A 5 All basic versions of the device consist of the following components Housing DA12 digital indicators indication limit 19 999 Amplifier plug in units ME10 Connection boards AP01 APOS Power pack Accessories Kab133A adapter cable 0 3 m D connector to MS coupler socket Kab251 05 synchronisation cable 0 5 m 2x
33. uit transducer connector sensor circuit to excitation voltage and Feedback ondas sensor circuit to excitation voltage bridges AP01 connection board connect 5 with 12 and bridge 6 with 13 AP03 connection board connect B with G and bridge C with F 1 Any cable extension must only ever be carried out in six wire T3 connection Avoid rearranging the transducers with the device switched on Should this however occur correct functioning is obtained by briefly switching the device ON and OFF For cable lengths gt 50 m one resistor with half the bridge resistance value BR 2 must be solder into the transducer in place of each feedback bridge If the transducers are calibrated in six wire connection the resistors must be solder directly into the sensor circuit Which transducer to connect to which amplifier ME10 DC amplifier for strain gage transducers measuring frequency 0 10 kHz ME30 600 Hz CF amplifier for strain gage transducers ME50 4 8 kHz CF amplifier for inductive transducers ME50S6 4 8 kHz CF amplifier for strain gage transducers l SS i 244 5 NOTE The accuracy of a measurement channel can be affected by adjacent channels if no transducers have been connected to them In this case we recommend closing the bridges for the sensor circuits of the excitation voltage for all channels that have not been connected clip on dummy plug with appropriate bridges MGAII Connect
34. uring use The same applies to the use of accessories General dangers of failing to follow the safety instructions The amplifier system is a state of the art device and is safe to operate The device may give rise to further dangers if it is inappropriately installed and operated by untrained person nel Any person instructed to carry out installation commissioning maintenance or repair of the device must have read and understood the User Manual and in particular the technical safety instructions Residual dangers The scope of supply and list of components provided with the amplifier system cover only part of the scope of measurement technology In addition equipment planners installers and operators should plan implement and respond to the safety engineering considerations of measurement technology in such a way as to minimise residual dangers Prevailing regula tions must be complied with at all times There must be reference to the residual dangers connected with measurement technology After setting up and password protected activities care must be taken to ensure that any control units that may be connected remain in a safe and secure state until the switching behaviour of the amplifier system has been checked MGA II MGAII Warnzeichen und Gefahrensymbole Wichtige Hinweise f r Ihre Sicherheit sind besonders gekennzeichnet Beachten Sie diese Hinweise unbedingt um Unf lle und Sachsch den zu vermeiden Sicherh
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