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HBM MGA II Operating Manual

Amplifier system with digital display
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B0599-3.7 en
Operating Manual
Amplifier System
MGA II
with Digital Display
DA12

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Summary of Contents for HBM MGA II

  • Page 1 Operating Manual Amplifier System MGA II with Digital Display DA12 B0599-3.7 en...

  • Page 3: Table Of Contents

    A−4 Structure of the MGA II device ..........
  • Page 4 ................E−1 MGA II...

  • Page 5: Safety Instructions

    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...
  • Page 6 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 MGA II...
  • Page 7 Situation, in der VORSICHT leichte bis mittelschwere Körperverletzungen eintreten können, wenn sie nicht vermieden wird. Sachschäden: Das Produkt oder die Umgebung HINWEIS können beschädigt werden. Auf dem Modul Bedeutung: Angaben in der Bedienungsanleitung berücksichtigen MGA II...
  • Page 8 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...
  • Page 9 The instrument complies with the safety requirements of DIN EN 61010, Part 1 (VDE 0411, Part 1); Protection Class I. 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.
  • Page 10 If an amplifier channel is to be withdrawn, close off the plug−in unit with a blanking plate.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 I. MGA II...

  • Page 11: A Introduction

    Introduction Ý Notes on documentation A−1 Introduction MGA II...

  • Page 12: Notes On Documentation

    A−2 Introduction Ý Notes on documentation Notes on documentation This Manual contains all the information you need to operate the MGA II. There are several guidelines available to you: • Each Section starts with a list of its contents. •...
  • Page 13 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. Information / Instructions for use Instructions for use or other valuable information for the user. MGA II...

  • Page 14: Mga Ii Housings

    A−4 Introduction Ý MGA II housings MGA II housings The MGA II System is supplied in various housings: Desktop housing TG 005 Desktop housing TG 007 (458x171x367) (255x171x367) 19” module frame ER 007 (483x132.5x367) Desktop housing TG011 (173x171x367) (W x H x D in mm)
  • Page 15 Introduction Ý 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, AP03 ... ) •...
  • Page 16 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).

  • Page 17: Structure Of The Mga Ii Device

    Introduction Ý Structure of the MGA II device A−7 Structure of the MGA II device End−phase module (option) Connection boards (AP01, AP02, AP05, AP11) Power pack DA12 digital indicator Amplifier plug−in units (ME10, ME30, ME50, ME50S6) Fig. 3.1: Overall structure of the MGA II device MGA II...
  • Page 18 A−8 Introduction Ý Structure of the MGA II device Synchronisation Earthing switch SY02 Output Transducer port AP01 Blanking Mains plates Connection connection boards Chassis ground Fig. 3.2: Rear of device (section) MGA II...

  • Page 19: Control Elements For The Digital Indicator

    Mains 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 HBM amplifiers’ output area. The decimal point is selectable/disconnectable via plug−in jumpers St21/St22 on the DA12 motherboard. DA12 motherboard Dec.−point...

  • Page 20: Control Elements For The Amplifier Plug−In Units

    A−10 Introduction Ý Structure of the MGA II device Control elements for the amplifier plug−in units Amplifier type ME10 ME10: DC amplifier for 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...

  • Page 21: Component Location Diagrams, Connection Boards

    Introduction Ý Structure of the MGA II device A−11 Component location diagrams, connection boards Base for EM001 end−phase module 0...20 Fig. 3.5: Connection board AP01 MGA II...
  • Page 22 A−12 Introduction Ý Structure of the MGA II device Base for EM001 end−phase module S302−1 S304−2 Fig. 3.6: Connection board AP05 MGA II...
  • Page 23 Introduction Ý Structure of the MGA II device A−13 Base for EM001 end−phase module S302−1 S304−2 S301−1 S303−2 Fig. 3.7: Connection board AP11 MGA II...

  • Page 24: Component Location Diagrams Me10, Me30, Me50, Me50S6

    A−14 Introduction Ý Structure of the MGA II device Component location diagrams ME10, ME30, ME50, ME50S6 BR3/BR4 St21 Fig. 3.8: Component location diagram ME10, ME30, ME50, ME50S6 with ME30 on ME50 and ME50S6 not on ME10 on ME10 MGA II...

  • Page 25: Conditions On Site

    D Permissible relative humidity at 31 °C is 80 % (non−condensing), reducing linearly to 50 % at 40 °C. D The devices are classed as overvoltage category II, pollution grade 2 equipment. MGA II...

  • Page 26: Maintenance And Cleaning

    A−16 Introduction Ý Maintenance and cleaning Maintenance and cleaning MGA II system devices are maintenance−free. Please note the following points when cleaning the housing: CAUTION Withdraw the mains plug from the socket before carrying out any cleaning. D Clean the housing with a soft, 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.

  • Page 27: B Connections

    Connections Ý Mains and battery operation B−1 Connections MGA II...

  • Page 28: Mains Connection

    (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. Earthing switch MGA II...

  • Page 29: Shielding Design

    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.

  • Page 30: Connecting Transducers

    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). MGA II...

  • Page 31: Connect Strain−Gage Full Bridge

    Excitation voltage (−) Excitation voltage (+) Measuring signal (−) Case Case Case Case Cable shielding Sensor circuit (+) Sensor circuit (−) see page B−3 Wire colours: wh= white; bk= black; bu= blue; rd= red; ye= yellow; gn= green; gy= grey MGA II...

  • Page 32: Connect Inductive Half Bridge

    Measuring signal (+) Excitation voltage (−) Excitation voltage (+) Cable shielding Case Case Case Sensor circuit (+) Sensor circuit (−) see page B−3 Wire colours: wh= white; bk= black; bu= blue; rd= red; ye= yellow; gn= green; gy= grey MGA II...

  • Page 33: Intrinsically Safe Transducer Port

    1.06 W Attachable transducer resistors in the intrinsically safe circuit ME30 =5 V 300...4000 Ω = 2.5 V 100... 4000 Ω ME10 =10 V 600...4000 Ω = 5 V 175... 4000 Ω = 2.5 V 60... 4000 Ω MGA II...

  • Page 34: Electrical Connection To Ap05

    This voltage should therefore be kept as low as possible by appropriate choice of protective conductor. NOTE Further guidance on transducer connection in areas subject to explosion hazard will be found in HBM publications. “SD01A safety barriers” for strain−gage full bridges MGA II...
  • Page 35 In normal operation no current flows through the Zener diodes in the Zener barriers or − if cable and transducer are of symmetrical construction − through R . The potential equalisation line (PEL) is thus kept to the operating−zero potential. If malfunctions occur, connect the zero operating voltage to the PEL earthing point through a separate line. MGA II...

  • Page 36: Outputs And Remotes

    Operating mode Calibrate; to Switch MB1/MB2; to Operating mode ZERO; to Option: voltage or current output; switchable "10 V; I ="20 mA (+4...+20 mA) Ω Output U ="10 V; R >5 k Fig. B 1: Bu2 pin assignment MGA II...
  • Page 37 EM001 end−phase modules is two. End−phase module The switch position necessary for the required output signal is shown in the table underneath. End−phase module 0...20 Sliding switch Plug−in jumpers required output Switch position +10 V +20 mA +4... +20 mA MGA II...

  • Page 38: Synchronisation (Me30 And Me50 Only)

    100 kOhm resistors on the amplifier circuit−board. • In the case of ME30 and ME50: solder bridge between R24 and R37 MGA II...
  • Page 39 SY02 switch to MASTER Device 2 • 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). Device 3 MGA II...
  • Page 40 B−14 Connecting Ý Synchronising MGA II...

  • Page 41: C Commissioning

    Commissioning C−1 Commissioning MGA II...

  • Page 42: 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. MGA II...

  • Page 43: Devices In The Desktop Housing And Module Frame

    Connect your transducer to the jack provided on the connection board (reference BU01). 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 II...

  • Page 44: Switching On

    Switch the device on with the POWER button on its front panel. 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 II...
  • Page 45 Balancing/Range D−1 Balancing/Range MGA II...
  • Page 46 2.5 V 2.5 V = 5 V: Default setting for strain gage transducers = 2.5 V: Rated excitation voltage for HBM inductive transducers = 1 V: For inductive transducers with high output signals or when using the ME50 with safety barriers or with very small sensors.
  • Page 47 Switch S29 ≥2.5...20 mH 2.5 V ≥6...19 mH ME50 NOTE If the ME50 is used with SI01 safety barriers, ensure that the bridge supply voltage is 1 V and that switch S29 is in the ‘”Full bridge” position. MGA II...
  • Page 48 The balance range for ME10 and ME30 is approx. "2 mV/V, for ME50 "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. MGA II...
  • Page 49 22 from Bu2 (see page B−10) ME50: MB1!"80 mV/V MB2!"8 mV/V Range Switch S24/4 External ME30, ME50 "80 MB1 = mV/V − OPEN Connect contacts 4 "8 CLOSED and 22 from Bu2 MB2 = mV/V (see page B−10) S24/4 MGA II...
  • Page 50 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 II...
  • Page 51 = 1 V = 2,5 V MB1: S26/ MB2: S27 ME50 mV/V mV/V 17.0−24.0 6.8−9.6 22.0−32.0 8.8−12.8 30.0−42.0 12.0−16.8 39.0−55.0 15.6−22.0 52.0−73.0 20.8−29.2 68.0−97.0 27.2−38.8 90.0−128.0 36.0−51.2 118.0−169.0 47.2−67.6 156.0−223.0 62.4−89.2 207.0−292.5 82.8−117.0 OPEN 272.0−387.5 109.0−155.0 CLOSED 360.0−512.5 144.0−205.0 MGA II...
  • Page 52 17−19 of jack Bu2 (rear of housing) (see also page B−10). Range 1 fine Switches S24/ 1+2 External 5kΩ MB1 internal CLOSED OPEN − (factory setting) Potentiometer to OPEN CLOSED MB1 external contacts 17−19 ME30, ME50 S24/1+2 MGA II...
  • Page 53 Calibrating the measuring chain 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. ME10 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...
  • Page 54 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; 1 d = 1 g For Range 2 proceed similarly using P22. MGA II...
  • Page 55 Balancing/Range Ý Zero operating mode D−11 Zero operating mode The amplifiers in the MGA II System are easily replaced. 1. When internal calibration is finished, move sliding switch to position ME10 ZERO (check amplifier zero−point). 2. The zero value set is displayed and corresponds to the suppressed previous load (tare value).
  • Page 56 = 675 Hz (−3 dB) 0...10 kHz (−1 dB) without effect CLOSED = 20 kHz (−3 dB) ME30 Measurement S24/3 frequency range 0...60 Hz (−1 dB) CLOSED = 80 Hz (−3 dB) 0...2 Hz (−1 dB) OPEN = 2.5 Hz (−3 dB) MGA II...
  • Page 57 Balancing/Range Ý Measuring−frequency range D−13 ME50 Measurement S24/3 frequency range 0...500 Hz (−1 dB) CLOSED = 675 Hz (−3 dB) 0...2 Hz (−1 dB) OPEN = 2.5 Hz (−3 dB) MGA II...
  • Page 58 D−14 Balancing/Range Ý Measuring−frequency range MGA II...
  • Page 59 Earthing switch, B−2 Safety instructions, 5 residual dangers, 5 End−phase module EM001, B−11 SLAVE, B−12 Synchronisation, B−12 Fine balance, D−4 Four−wire connection, B−4 , B−6 Zero balance, D−4 Zero value, D−11 Zero value, D−11 Greenline, B−3 Guidelines, A−2 MGA II...
  • Page 60 They are not to be understood as express warranty and do not constitute liability whatsoever. Hottinger Baldwin Messtechnik GmbH Im Tiefen See 45 S 64293 Darmstadt S Germany Tel. +49 6151 803−0 S Fax: +49 6151 803−9100 Email: info@hbm.com S www.hbm.com...

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Da12

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