Motrona AX 342 Operating Instructions Manual
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Motrona AX 342 Operating Instructions Manual

Process indicator
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Process Indicator with 2 Analogue Inputs,
Serial RS232 / RS485 Interface
 Two analogue inputs with independent scaling, each +/- 10V or 0/4 – 20 mA
 Operating modes for display of input A or input B or the combinations
[A + B], [A - B], [A x B] and [A : B]
 Useful supplementary functions like Tare function, programmable averaging
functions, programmable linearization etc.
 Aux. output 24 V DC / 100 mA for sensor supply
AX34209a_e.doc / Mrz-16
AX 342
2 Presets, Relay Outputs and
Operating Instructions
Page 1 / 38

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Summary of Contents for Motrona AX 342

  • Page 1 AX 342 Process Indicator with 2 Analogue Inputs, 2 Presets, Relay Outputs and Serial RS232 / RS485 Interface  Two analogue inputs with independent scaling, each +/- 10V or 0/4 – 20 mA  Operating modes for display of input A or input B or the combinations [A + B], [A - B], [A x B] and [A : B] ...
  • Page 2  Regarding installation, wiring, environmental conditions, screening of cables and earthing, you must follow the general standards of industrial automation industry  - Errors and omissions excepted – General instructions for cabling, screening and grounding can be found in the SUPPORT section of our website http://www.motrona.com Version: Description: AX34209a/tj/hk/05_2011 First edition AX34209a_e.doc / Mrz-16...

  • Page 3: Table Of Contents

    Table of Contents Introduction ............................4 Electrical Connections .......................... 5 2.1. Power supply ..........................6 2.2. Aux. voltage output ........................6 2.3. Analogue measuring inputs......................6 2.4. Relay Outputs ..........................6 2.5. Serial RS232 / RS485 interface (AX 348 only) ................7 Jumper settings ...........................

  • Page 4: Introduction

    Also it may be important to display and evaluate both, linear and non-linear analogue inputs at an acceptable accuracy, which requires programmable linearization functions. Process controllers of series AX 342 have been designed for this kind of requirements. Moreover, these units also provide 2 programmable presets with relay outputs and a serial RS232 / RS485 interface.

  • Page 5: Electrical Connections

    2. Electrical Connections Terminal assignments and wiring example 1 2 3 Rel. 2 C NO NC 1 2 3 4 5 6 7 8 9 10 1 2 3 Rel. 1 C NO NC Rel. 2 Rel. 1 RS232 Sensor 1 Sensor 2 *) Contact positions are shown in powerless state AX34209a_e.doc / Mrz-16...

  • Page 6: Power Supply

     When earthing any of the GND terminals, please be aware that all terminals marked GND or AGND will be earthed.  Multiple earthing on different positions of an installation may cause problems, especially with poor overall performance of the whole earthing and screening system! ...

  • Page 7: Serial Rs232 / Rs485 Interface (Ax 348 Only)

    After setting the switch, shift the print carefully back to the housing and avoid damage of the front pins for connection to the front keypad plate. Screen (Sub-D-9) Connection of the RS232 interface A(+) A(+) AX 342 B(-) B(-) Connection of the RS485 interface AX34209a_e.doc / Mrz-16 Page 7 / 38...

  • Page 8: Jumper Settings

    3. Jumper settings When your input signal is a current of 0-20 mA or 4-20 mA, there is no need to change jumper settings and you can skip this section. Where however you intend to use one or both inputs for voltage signals, you must change the internal jumper settings correspondingly.
  • Page 9 Current inputs are automatically scaled to an input range of 0/4 – 20 mA. Voltage inputs use the standard range of +/- 10V. You are free to measure voltages up to 120 volts DC by use of a remote resistance in series to the input line (please observe applicable safety standards!).

  • Page 10: How To Operate The Keys

    4. How to Operate the Keys The unit uses 3 front keys for all setup operations. Subsequently, the key functions will be named as shown in the table below. ENTER (Command) The functions of the keys are depending on the actual operating state of the unit. The following three operating states apply: ...

  • Page 11: Parameter Settings

    4.2. Parameter settings 4.2.1. How to select a parameter The ENTER key will scroll through the menu. The SET key allows to select the corresponding item and to change the setting or the numeric value. After this, the selection can be stored by ENTER again, which automatically changes over to the next menu item.

  • Page 12: Teach Operation

    4.3. Teach operation he Time-out function will be switched off during all Teach operations Function  ENTER will conclude or abort any Teach operation in progress  SET function is fully similar to normal set-up operation Cmd will store the display value to the register and will change over to the next interpolation point.

  • Page 13: The Parameter Menu

    5. The Parameter Menu The menu provides one section with “basic parameters” and another section with “operational parameters”. On the display you will only find those parameters which have been enabled by the basic settings. E.g. when the Linearization Functions have been disabled in the basic set-up, the associated linearization parameters will also not appear in the parameter menu.

  • Page 14: Overview Of Operational Parameters

    5.2. Overview of Operational Parameters Single Mode Dual Mode Combined Modes Setpoints Preselection 1 Preselection 2 Display and „inPutA" „inPutA" „inPutA" Scaling „StArtA" „StArtA" „StArtA" „End A" „End A" „End A" „dPoi A" „dPoi A" „dPoi A" „FiLt A" „FiLt A" „FiLt A"...

  • Page 15: Setting Of Parameters

    6. Setting of Parameters 6.1. Basic Parameters In general, the parameters described subsequently must be set with the very first commissioning of the unit only. For best comprehensibility, this section describes setup of all display functions only first. Settings applicable to relay outputs and serial interface are described separately.

  • Page 16: Operational Parameters

    Menu Text Default Command key enable The Command key is switched off and no Offset values will appear in the menu The Cmd key will execute the Tare/Offset function The Cmd key will execute the Teach function The Cmd key will execute both, the Tare and the Teach function 6.2.

  • Page 17: Modes Of Operation

    6.3. Modes of operation 6.3.1. Single mode (input A only) Menu Text Setting Range Default Input A range Set the desired range for input A Voltage +/-10V Current 0-20 mA Current 4-20 mA Start value A -99999 … 99999 Value which the unit will display with a zero input signal of 0 volts or 0/4 mA End value A -99999 …...
  • Page 18 6.3.2. Dual Mode (Inputs A and B separately) With this mode, the SET key selects between display of channel A and display of channel B, and the bar of the high order LED indicates which of the two channels is actually in display. Menu Text Input Range Default...
  • Page 19 6.3.3. Combined Modes [A + B], [A - B], [A : B], [A x B] These modes allow displaying either the single channels A and B or the calculated result according to the selected combination. The SET key allows scrolling between the three displays.

  • Page 20: Additional Settings For The Preselections And Relays

    6.4. Additional settings for the Preselections and Relays 6.4.1. Basic settings: The basic setup menu provides the following additional parameters which are relevant for the operation of the presets and relays only: Menu Text Setting Range Default Signal source of Relay 1 Relay 1 depends on analogue input A Relay 1 depends on analogue input B *) Relay 1 depends on the combination [A,B] of both...
  • Page 21 Menu Text Setting Range Default Relay 2 switching characteristics See above See above See above See above Relay is statically active when the display reaches the value of Preset 1 – Preset 2 *) Relay is dynamically active when the display reaches the value of Preset 1 –...
  • Page 22 6.4.3. Operational settings for presets: The settings for the Preselection values appear at the beginning of the operational parameters: Menu Text Setting Range Default Preselection 1 -99999 … 99999 10000 Preselection 2 -99999 … 99999 5000 6.4.4. Actual switching state of the relays At any time you can find out the actual switching state of the relays.

  • Page 23: Parameters For The Serial Interface

    6.5. Parameters for the Serial Interface 6.5.1. Communication settings in the Basic Menu: Menu Setting Range Default Unit Number 0..99 You can assign any unit number between 11 and 99. The address must however not contain a “0“ because such numbers are reserved for collective addressing of several units.
  • Page 24 6.5.2. Operational Parameters for configuration of the interface: Menu Setting Range Default Serial Timer: 0,000 0,100 sec Setting 0,000 allows manual activation of a serial data 0,010 sec transmission at any time. All other settings specify the cycle … time for automatic transmission, when the interface is set to 9.999 sec "Printer Mode"...
  • Page 25 6.5.3. PC-Mode Communication with PC - Mode allows free readout of all parameters and registers of the unit. The subsequent example shows the details of communication for serial readout of the actual display value. The general string to initiate a request has the following format: EOT = Control Character (Hex 04) AD1 = Unit Address, High Byte...
  • Page 26 6.5.4. Printer Mode The Printer Mode allows cyclic or manual activation of transmissions of the specified register data. The corresponding register can be specified by means of parameter „S-Code“. Another parameter named „S-mod“ allows selection between two different string types: „S-mod“...

  • Page 27: Commissioning

    7. Commissioning Commissioning of this unit is easy and uncomplicated when following the subsequent steps: Step Action See section Analogue inputs  Set jumpers Basic settings  Select Operation mode  Keep linearization and Tare function off firstly Parameter settings ...

  • Page 28: Special Functions

    8. Special Functions 8.1. Tare / Offset function This function will become active after the “Cmd” parameter has been set to “oFFSEt” or to “both”(see 6.1). As a result, every touch of the “Cmd” key will store the actual display value to the Offset register, resulting in a Zero display with the actual input signal.
  • Page 29 P1(x)= -1000 P1(y)= 900 P8(x)= 0 P16(x)= 1000 P8(y)= 750 P16(y)= 800 P16(x)= +1000 P1(x)= 0 P16(y)= - 600 P1(y)= 0 Linearisation Mode = 4_quA Linearisation Mode = 1_quA Application Example: We like to display the filling quantity (volume) of a tank as shown below, with use of a pressure sensor mounted to the bottom of the tank.

  • Page 30: Manual Input Or „Teaching" Of The Interpolation Points

    8.3. Manual input or „Teaching“ of the interpolation points Interpolation points to form the linearization curve can be entered one after another, using the same procedure as for all other numeric parameters. This means you will enter all parameters P01_x to P16_x and P01_y to P16_y manually by keypad. During manual input of interpolation points the unit will not examine the settings P01_x to P16_x.
  • Page 31  When you read the x-value of your first interpolation point in the display, press “Cmd” again. This will automatically store the actual display value to the P01_x register, and for about 1 second you will read “P01_y “ on the display, followed again by the same reading stored previously.

  • Page 32: Overflow And Underflow Control

    8.4. Overflow and Underflow Control The unit continuously monitors both input channels for possible overflow or underflow situations (input signal out of specified range) Overflow: the analogue input signal is greater than +10,2 V or +20,4 mA Underflow: the analogue input signal is lower than -10,2 V or -0,4 mA Any out-of-range situation will cause a message according the table below: Display Input A...

  • Page 33: Technical Appendix

    9. Technical Appendix 9.1. Parameter Lists 9.1.1. General Function Text Min. value Max. value Default Ser. Code Operating Mode mode Brightness of Display briGht Display Update Time UPdAtE 5999 Keypad Locking CodE Key Command Range Input A inPut A Start Input A StArt A -99999 99999...
  • Page 34 9.1.3. Serial Interface Function Text Min. value Max. value Default Ser. Code Serial Timer (s) S-tin) 9999 Serial Mode S-n)od Serial Code S-CodE Serial Unit Nr S-Unit Serial Format S-Forn Serial Baud rate S-bAUd 9.1.4. Linearization Function Text Min. value Max.

  • Page 35: Dimensions

    9.2. Dimensions 110,0 (4.331’’) 96,0 (3.780’’) Panel cut out: 91.2 x 44.8 mm (3.590 x 1.764’’) AX34209a_e.doc / Mrz-16 Page 35 / 38...

  • Page 36: Technical Data

    9.3. Technical data Power supply DC : 24 V (17 – 30 V), approx. 100 mA (without aux. sensor supply) DC current consumption : 18 V : 110 mA, 24 V : 90 mA, 30 V : 80 mA (without sensors) Aux.

  • Page 37: Commissioning Form

    9.4. Commissioning Form Date: Software: Operator: Serial No.: Basic Settings: Operating mode: Code: Brightness: Linearization: Display Update [sec]: Cmd key command: Source 1: Source 2: Switch characteristics 1: Switch characteristics 2: Hysteresis 1: Hysteresis 2: Serial unit No.: Serial format: Serial Baud Rate: Analogue Inputs: Input A...
  • Page 38 Linearization: P01_X: P01_Y: P09_X: P09_Y: P02_X: P02_Y: P10_X: P10_Y: P03_X: P03_Y: P11_X: P11_Y: P04_X: P04_Y: P12_X: P12_Y: P05_X: P05_Y: P13_X: P13_Y: P06_X: P06_Y: P14_X: P14_Y: P07_X: P07_Y: P15_X: P15_Y: P08_X: P08_Y: P16_X: P16_Y: AX34209a_e.doc / Mrz-16 Page 38 / 38...

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