Related Manuals for HBM AED 9101B
Summary of Contents for HBM AED 9101B
- Page 1 Operating manual Digital Transducer-Electronics AED 9101B Part 1, Basic device Free Datasheet http://www.datasheet4u.com/...
- Page 2 AED9101B / Part 1 / Basic device 1/24 Part 1 Description of the hardware of the AED basic device AED9101B Contents Page Safety notes ....................... 3 Introduction and Use ................. 4 Mechanical construction ................5 Electrical connection................. 6 3.1 Transducer connection ................. 6 3.2 Connection of the supply voltage............
- Page 3 In particular, it is prohibited to carry out any repairs, soldering work etc whatsoever on the boards and to exchange components. Repairs may only be carried out by HBM. The complete factory settings are stored nonvolatile in the measurement board AD101B and cannot be deleted or overwritten;...
- Page 4 AED9101B / Part 1 / Basic device 3/24 Safety notes • Normally, the product does not represent any hazard if the notes and instructions for project planning, assembly, use within specifications and maintenance are complied with. • The relevant accident prevention regulations, as applicable in each individual case, must be complied with.
- Page 5 AED9101B / Part 1 / Basic device 4/24 Introduction and Use The digital transducer electronic devices AED9101B belong to the family of AED components which digitally condition and network as bus-capable signals from mechanical measured value transducers. This includes digital measurement amplifier boards, base devices with RS-485 interface, and intelligent sensors with integrated signal processing.
- Page 6 AED9101B / Part 1 / Basic device 5/24 Mechanical construction • Mechanical protection (IP65) • Voltage supply for measurement amplifier board and transducer supply • Total bridge resistance transducer > 40 Ω • Selectable serial interfaces RS-422, RS-485 (4 wire / 2 wire) •...
- Page 7 AED9101B / Part 1 / Basic device 6/24 Electrical connection A connection diagram is enclosed with the basic device AED 9101B. When making connections, please ensure that the cable wires do not protrude beyond the connection terminals (risk of loops forming). Please also ensure that the cable shield is correctly connected to the PG bolting (see Chapter 3.6).
- Page 8 0,1uF Fig. 3.1.2: Transducer connection in the basic device AED9101B with 6-wire connection (colours used by HBM: BU - blue, GN - green, RD - red, WH - white, GY - grey, BK – black) For transducers calibrated in four-wire-technology, there are two types of connection: •...
- Page 9 (Wire colours : BU – blue, GN - green, RD – red, WH – white, GY – grey, BK – black) When connecting several transducers, it is recommended to use a distribution box VKK4 or VKK6 by HBM. In general the supply cable to the AED should be implemented as shielded cable.
- Page 10 AED9101B / Part 1 / Basic device 9/24 When connecting several transducers to the AED, note the number of connectable load cells (or the resulting bridge resistance) in relation to the external supply voltage, so as not to exceed the maximum dissipation loss in the basic device.
- Page 11 AED9101B / Part 1 / Basic device 10/24 Effect on the measurement result with AUTOCAL (command ACL1) activated: 6-wire circuit (standard operation mode): With the 6-wire-circuit the return cable 2´ and 3´ in the load cell ( for load cells with 6-wire-connection) or directly on the load cell connection ( for load cells with 4-wire circuit) with the supply cable 2 and 3 bridged (Fig.3.1.2 ).
- Page 12 AED9101B / Part 1 / Basic device 11/24 Replacement circuit for the bridge with bridge resistance RB and the supply cable with cable resistances R and R : = (4xp /π)x(l[m] / A [mm = 0.0178 [Ωmm /m for copper] π...
- Page 13 AED9101B / Part 1 / Basic device 12/24 However, for the 4-wire circuit, the dependence of the copper resistance of the cable directly influences the measurement result via the temperature, as the bridge supply voltage U changes: bridge := R x (1 + alpha x (t –20°C)), L(t) with R...
- Page 14 AED9101B / Part 1 / Basic device 13/24 3.2 Connection of the supply voltage The voltage supply must meet the following requirements: AED9101B with AD101B Direct voltage +6...+30V Current consumption ≤200mA (for 40Ω bridge) 3´ UB +6..30V 2´ 0,1uF The voltage supply must be shielded. It can be fed in within the interface cable or designed as a separate cable.
- Page 15 The interface RS485 with a 4-wire- connection provides for the full functionality of the AED with a maximum cable length of 1000 m. In order to connect the AED to the COM-Port of a PC (RS232), an interface converter (by HBM 1- SC232/422A) is necessary.
- Page 16 The cable shield should not be used for this equipotential bonding. A double shielded cable is recommended for this cable for EMC reasons (available from HBM, e.g.: 3 x 2 x 0.14m² , 4-3301.0071). The shield of the master cable is connected with the shield of the AED cable (not with the supply ground).
- Page 17 2 = RxD 3 = RxD 3 = TxD UB (red, 8..30VDC) 5 = GND 5 = GND Fig. 3.3.3 Connection of an AED (RS422 or RS485 4 wire) to a computer via the HBM Converter AED9101B_P1_e_draft_020318.doc Free Datasheet http://www.datasheet4u.com/...
- Page 18 3.4 Multi-channel measurements (bus mode, RS485) Several AEDs can be connected to a common bus cable through the RS-485 interface. The principle of bus wiring for 4-wire operat. is illustrated in Fig. 3.4.1. Up to 32 AEDs can be connected to a common bus cable through the RS-485 interface.
- Page 19 3). If the switch ‚Bus termination‘ is set to OFF, then the command STR does not have any effect, that is, bus termination is deactivated. The HBM interface converter also contains these bus termination resistors. Important note These terminations may not be activated more than twice in one bus.
- Page 20 AED9101B / Part 1 / Basic device 19/24 Termination resistors are necessary for the electrical function of this bus system. These resistors protect the quiescent-signal levels for the receivers on the bus cable. These termination resistors are already contained in the AED and to be set via the switch ‚Bus termination’...
- Page 21 AED9101B / Part 1 / Basic device 20/24 3.5 Trigger input An external sensor (light barrier, contact a.o.) can be connected to the trigger input of the AD101B in order to drive the trigger measurement function (see operation instructions AD101B, Part 2). The command is to be activated as an "external trigger"...
- Page 22 21/24 3.6 Cable connection AED9101B via PG unions As a connection cable between the AED 9101B and partner device, only a connection cable with a shield grounded on both sides (and metal connectors) may be used. The shield is to be full-surface applied to the PG union (and to the housing of the metal connector).
- Page 23 AED9101B / Part 1 / Basic device 22/24 Technical data of the AED9101B basic device Type AED 9101B Measured signal input; DMS transducer (full bridge) >40 * Transducer connection 6-wire circuit Transducer – supply voltage Transducer cable length <100 RS422, RS485 or RS232...
- Page 24 Modifications reserved. All details describe our products in general form. They are not to be understood as express warranty and do not constitute any liability whatsoever. 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 AED9101B_P1_e_draft_020318.doc Free Datasheet http://www.datasheet4u.com/...
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