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Datcon DT4200 Operating Instructions Manual

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DT4200
Process Indicator
Operating Instructions

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Summary of Contents for Datcon DT4200

  • Page 1 DT4200 Process Indicator Operating Instructions...

  • Page 2: Table Of Contents

    DT4200 Contents 1. About this document .............4 1.1. Function ................... 4 1.2. Target group................4 1.3. Symbolism used............... 4 2. For your safety ...............5 2.1. Authorised personnel ............... 5 2.2. Appropriate use................ 5 2.3. Warning about misuse ............. 5 2.4. General safety instructions............5 2.5.
  • Page 3 DT4200 7. Setting-up ..............23 7.1. Typing the code (password) in ..........23 7.2. The menu ................25 7.3. Display modes of limit output status (01. menu item) .... 26 7.4. Setting up the limit outputs (02. and 03. menu items).... 28 7.5.

  • Page 4: About This Document

    1. About this document 1.1. Function This operating instructions manual has all the information you need for quick set-up and safe operation of DT4200. Please read this manual before you start setup. 1.2. Target group This operating instructions manual is directed to trained personnel.

  • Page 5: For Your Safety

    2.5. CE conformity A DT4200 is in conformity with the provisions of the following standards: EN 61326:2000 (EMC) 2.6. Environmental instructions Protection of the environment is one of our most important duties.

  • Page 6: Product Description

    DT4200 3. Product description 3.1. Delivery configuration Delivered items The scope of delivery encompasses: • DT4200 • 1 pc. panel sealing (1) • 2 pc. mounting clamps (enclosed in a nylon bag) • documentation: this oparating instructions manual certification warranty...

  • Page 7: Principle Of Operation

    The 4 ½-digit liquid crystal display make process variables easily visible at a distance. A label defining the appropriate engineering unit may be attached to the right of the display. DT4200 has two optically isolated transistor outputs for limit signaling or for simple control purposes. Power supply DT4200 is loop-powered from 4-20 mA signal, dropping less than 2 V at 20 mA.

  • Page 8: Adjustment

    DT4200 3.3. Adjustment DT4200 can be adjusted through the 3 button front panel keypad. All configuration parameters are stored in the instrument EEPROM for unlimited period of time, even when the loop current beeng switched off. In factory setting the DT4200 displays the 4-20 mA loop current with a resolution of three decimals.

  • Page 9: Mounting

    DT4200 4. Mounting 4.1. General instructions Use the enclosed seal between the instrument and the panel when mounting the instrument to assure IP 65 from the front. Mounting positions Select a mounting position you can easily read the display reach for mounting and connecting the instrument and that minimises the hazard of water, dust or dump getting into the instrument.

  • Page 10: Mounting

    DT4200 4.3. Mounting Preparatory steps The instrument is housed in a DIN standard 96 x 48 x 50 mm ABS case. It can be fix in the panel with the two enclosed mounting clamps. Dimensions of panel cutout 1. Cut-out the panel according to the figure shows above.
  • Page 11 DT4200 Mounting with the mounting clamps 2. Put on the enclosed seal onto the instrument case from the rear side and fit it to the instrument holding frame (Figure step 2). 3. Put the instrument into the prepared cut-out until it possible and check the fitting of the seal between case and mounting surface.

  • Page 12: Connecting

    Preparing cables Prepare the cable for the connection. Strip approx. 8 mm insulation. In case of using flexible cable, use crimped wire end. Wiring plan, connecting the DT4200 as a terminal device: (see also “Application example”) Be careful the polarity of the cable.
  • Page 13 DT4200 Connecting the cables • The DT4200 is situated in the „middle” of the current loop. In this case one cable comes from the signal source and another cable goes to the processing unit(s). The following figure shows this case.
  • Page 14 DT4200 Connecting the cables Make sure before connection that the current loop is into the terminal switched off. assemblies The push-in direct connector assemblies used allow a fast connection of the cables. Their proper usage is shown by the following figure: 1.
  • Page 15 1.5 and 2.2 V, while pin 6 is the positive one, if the connection is correct. In the case of reverse polarity, the voltage value is less than 1 V, and 5 is the positive pin. With this you have completed the connection of DT4200. 20181113-V0...

  • Page 16: Display And Manual Controls

    DT4200 6. Display and manual controls 6.1. The first start-up The display The display is indicated by the arrow (1) After the instrument has been installed and connected into the current loop, first you see on the display the type of ...

  • Page 17: Characters And Mnemonics Appearing On The Display

    DT4200 6.2. Characters and mnemonics appearing on the display DT4200 has a 7-segment type display. It means that maximum 7 bars are used to form each characters. The numbers can be read easily, some of the letters, marks however, looks unusual: ...
  • Page 18 DT4200 Messages of critical errors  A/D failure (Service: AD Hardware)  EEPROM failure (Service: EEPROM Hardware)  EEPROM write error (Service: EEPROM Protected)  Calibration error (Service: Calibration)  Default factory settings (Service: Default Factory Settings)  The last saving was not successful (Error: Last Save)
  • Page 19 DT4200 Minimum-maximum values on the display (▲ button)  Minimum value (MINimum)  Maximum value (MAXimum)  Firmware version (FiRMwareE)  Low numeric value not possible to display  High numeric value not possible to display Limit values on the display ...

  • Page 20: Manual Controls

    DT4200 6.3. Manual controls DT4200 can be adjusted by the membrane push-buttons indicated by (1), (2), and (3) in the drawing. Functions of the push-buttons during measurement (1) MENU button: Entering the menu When you push this button, the device will ask for a password (code) in accordance with Chapter 7.1.
  • Page 21 DT4200 Using this function:  1. Press the ▲ button as long as you see this: This mnemonic indicates that it will be displayed the minimum value measured after the last clear. 2. Keeping the button pressed down, after 1.5 sec the minimum value will be displayed as long as the button is pressed down.
  • Page 22 DT4200 (3) ENTER button: displaying the status of the limit output and clearing the alarm (alarm acknwledgement). It’s functionality depends on the operating mode of displaying the limits. In default factory setting this function is switched off, therefore pushing the button does not cause any changes.

  • Page 23: Setting-Up

    DT4200 7. Setting-up 7.1. Typing the code (password) in The importance of the You may enter the menu only after you have typed your code code in. The code is made from 3 numeric characters. This solution prevents unauthorised persons from changing the settings of the instrument.
  • Page 24 DT4200 Automatic exit from If no buttons are pressed, the instrument displays the the request for the code  mnemonic (Auto Escape) after 1 minute has passed from the last pressing of a button, and it RESTARTS, i. e. goes back to the measuring mode. This...

  • Page 25: The Menu

    DT4200 7.2. The menu The menu structure 01: Limit-value display 26. page 02: Limit value 1 03: Limit value 1 28. page 04: Decimal point 36. page 05: Scale 4 mA 37. page 06: Scale 20 mA 39. page 07: Averaging number 41.

  • Page 26: Display Modes Of Limit Output Status (01. Menu Item)

    DT4200 7.3. Display modes of limit output status (01. menu item) Function The state of the limit outputs (whether they are switched on or off) can be displayed. Here you can define the conditions, on which displaying should depend. [Default factory setting: OFF] Sequence of operations 1.
  • Page 27 DT4200 Sequence of operations  •  : Always on (ON) It always displays the states of limit outputs. If you keep the ENTER button pressed down, the measurement results are displayed. (This operating mode is useful when the states of limit outputs is more important than the measured value.)

  • Page 28: Setting Up The Limit Outputs (02. And 03. Menu Items)

    DT4200 7.4. Setting up the limit outputs (02. and 03. menu items) Function The instrument has two limit outputs. They are identical with each other, and work independently. Operation: the instrument keeps comparing the displayed physical value with the (adjustable) limit value. It switches the output ON depending whether the displayed value is higher than the limit value.
  • Page 29 DT4200 Setting the operating 5. Keep stepping by pressing the ▲ button you can select mode the desired limit-output operating mode. Sequence of operations  •  : the output is always in switched off condition. [default factory setting] ...
  • Page 30 DT4200 Low limit value 8. Keep stepping by pressing the ▲ button as long as you Sequence of operations  see this sub-menu item: . LL (Low Limit) means: the low limit value. Here you can define the numerical value by which the device will compare the measured physical values.
  • Page 31 DT4200 Hysteresis of the low 16. Keep stepping by pressing the ▲ button as long as you limit  see this sub-menu item: . LH (Low Hysteresis) Sequence of operations means: the hysteresis of the low limit value. Here you can...
  • Page 32 DT4200 High limit value Setting the high limit value and It’s hysteresis is necessary Sequence of operations  in that case only, if you had selected the or the  operating mode. 23. Pressing the ▲ button keep stepping as long as you see ...
  • Page 33 DT4200 Hysteresis of the high 33. Keep stepping by pressing the ▲ button as long as you limit  see this sub-menu item: . HH (High Hysteresis) Sequence of operations means: the hysteresis of the high limit value. Here you can...

  • Page 34: Limit Output Alarm Mode

    DT4200 7.5. Limit output alarm mode Function In alarm mode, the limit output is switching on when the limit condition exist. But the output stays switched on (independent from the limit condition) until the ENTER button is pressed (alarm acknowledge). (All these information are described in detail in Chapter 7.4.
  • Page 35 DT4200 Exit from the menu item 1. After finishing the settings, press the MENU button to exit  from the menu item, and you see this: 2. Press the MENU button to exit from the menu item, and  you see this: (3.

  • Page 36: Decimal Point Position (04. Menu Item)

    DT4200 7.6. Decimal point position (04. menu item) Function Setting the position of the decimal point on the display, or switching the decimal point off. [Default factory setting: 3 decimals] Sequence of operations 1. Enter the menu by typing the supervisor code.

  • Page 37: The Physical Value Assigned To 4 Ma (05. Menu Item)

    DT4200 7.7. The physical value assigned to 4 mA (05. menu item) Function Defining the physical value that should be assigned to the loop current value 4 mA, this can be any numerical value within the range that can be displayed (-20000 - 20000).
  • Page 38 DT4200 Exit from the menu item 1. After finishing the setting, press the MENU button, to exit  from the menu item, and you see this: (2. If you want to change the setting you have done just now, or if you just want to check what you have typed in, go on with the operation from point 3 of the Sequence of operations.)

  • Page 39: The Physical Value Assigned To 20 Ma (06. Menu Item)

    DT4200 7.8. The physical value assigned to 20 mA (06. menu item) Function Defining the physical value that should be assigned to the loop current value 20 mA, which can be any numerical value within the range that can be displayed (-20000 - 20000).
  • Page 40 DT4200 Sequence of operations 6. Pressing the ► button you can select the next digit. 7. Pressing the ▲ button you can increase the value of the blinking digit:           , etc.

  • Page 41: The Number Of Averaged Measurements (07. Menu Item)

    DT4200 7.9. The number of averaged measurements (07. menu item) Function The instrument performs cca. 15 measurements in each seconds. The displayed measurement result is generated as the average of several measurements. Here you can define the number of measurements that should be used for calculating the averaged numerical value.
  • Page 42 DT4200 Sequence of operations  •  : The displayed value is the same as the last measurement result; the previous measurements do not influence this value. (The display settling time after the stabilisation of the input signal: 0.1 second.) ...

  • Page 43: Display Refresh Time (08. Menu Item)

    DT4200 7.10. Display refresh time (08. menu item) Function The instrument performs cca. 15 measurements in each seconds. It’s too fast to see the changing of the measurement value. Here you can define the time periods by which the instrument displays the new measurement values.
  • Page 44 DT4200 Exit from the menu item 1. After finishing the setting, press the MENU button, to exit  the menu item, and you see this: (2. If you want to change the setting you have done just now, or if you just want to check what you have typed in, go on with the operation from point 3 of the Sequence of operations.)

  • Page 45: Tests (09. Menu Item)

    DT4200 7.11. Tests (09. menu item) Function Checking the display and the limit outputs. Sequence of operations 1. Enter the menu by typing either the user code or the supervisor code. The way the code should be type in is described in Chapter ...
  • Page 46 DT4200 Sequence of operations Comment: the status you have selected here remains unchanged as long as you exit the menu, and the instrument starts measuring. 10. You can exit from the display test by pressing the  MENU button. You see the blinking mnemonic.

  • Page 47: Changing The User Code (10. Menu Item)

    DT4200 7.12. Changing the user code (10. menu item) Function You can define new codes instead of the factory-defined user code. The code is an optional number within the range between 000 and 999. [Default factory setting: 000] Sequence of operations 1. Enter the menu by typing either the user code or the supervisor code.
  • Page 48 DT4200 Sequence of operations 9. If the codes written in for the first and second time are identical with each other, the device exits from the menu  item. You see this on the display. Do not forget the user code you have specified. If you forget it, defining another one is possible only by using a supervisor code for entering into the menu.

  • Page 49: Changing The Supervisor Code (11. Menu Item)

    DT4200 7.13. Changing the supervisor code (11. menu item) Function You can define new codes instead of the factory-defined supervisor code. The code is an optional number within the range between 000 and 999. [Default factory setting: 100] Sequence of operations 1. Enter the menu by typing the supervisor code.
  • Page 50 DT4200 Sequence of operations 9. If the codes type in for the first and second time are identical with each other, the instrument exits from the  menu item. You see this on the display. Do not forget the supervisor code you have specified. If you forget it, defining another one is possible in the service only.

  • Page 51: Display Operating Modes (12. Menu Item)

    DT4200 7.14. Display operating modes (12. menu item) Function The instrument has a 4-and-a-half-digit display. It is possible to switch it into a 3-and-a-half-digit display mode. In this case the display behaves like a 3-and-a-half-digit display during measurement. (The mnemonics are displayed in four digits).
  • Page 52 DT4200 Exit from the menu item 1. After finishing the setting, press the MENU button, to exit  from the menu item, and you see this: (2. If you want to change the setting you have performed just now, or if you just want to check what you have typed in, continue the operation from Point 3 of the Sequence of operations.)

  • Page 53: Disable Displaying The Leader Zeros (13. Menu Item)

    DT4200 7.15. Disable displaying the leader zeros (13. menu item) Function Leader zero: the zeros that stand before an integer of no value. E.g. the instrument displays the value 5.2 together with the leader zeros:  (default factory setting), or without the leader ...
  • Page 54 DT4200 Exit from the menu item 1. After you have performed the setting, press the MENU button. This takes you out from the menu item, and you see  this: (2. If you want to change the setting you have done just...

  • Page 55: Clear Minimum And Maximum Values (14. Menu Item)

    DT4200 7.16. Clear minimum and maximum values (14. menu item) Function To clear the measured and stored mimimum and maximum values. Sequence of operations 1. Enter the menu by typing the supervisor code. The way the code should be type in is described in Chapter 7.1.

  • Page 56: Resetting The Default Settings (15. Menu Item)

    DT4200 7.17. Resetting the default settings (15. menu item) Function In this case all the settings are deleted, and the default factory setting is restored. Using this function makes sense in that case, when the settings of the instrument have changed so much, that it is easier to start the setting-up process from the default factory setting.

  • Page 57: Fault Rectification

    DATCON personnel. In the case of errors, it is recommended to notice of the displayed error message, as well as of the phenomenon seen. These information please communicate to the Datcon service personnel. 9. Dismounting 9.1. Dismounting procedure The steps described in Chapter 4.

  • Page 58: Appendix

    DT4200 10. Appendix 10.1. Technical specifications Power supply Supply: 4-20 mA, loop-powered Voltage drop: see: at Input parameters Reverse polarity protection: Maximum current: 80 mA Input parameters Input signal: Current Range: 3.5-20.5 mA Voltage drop: < 2 V (at 20 mA), < 2.2 V (at 4 mA)
  • Page 59 DT4200 Measuring parameters Characteristics: Linear Measuring frequency: 15 measurements / second Number of averaged samples: 1; 2; 4; 8; 16; 32 (adjustable) Limit outputs Output type: optically isolated passive switching transistor Current in OFF condition: I < 0.1mA (at 9 V) Voltage in ON condition: U <...

  • Page 60: Application Example

    DT4200 10.2. Application example 20181113-V0...

  • Page 61: Error Messages

    DT4200 10.3. Error messages The instrument has a sophisticated self-testing function; it is capable of detecting the majority of the errors. All mnemonics (code words) presented on the display comes from English expressions in abbreviated form. A/D overflow (Error: A/D Overflow) ...

  • Page 62: Messages Of Critical Errors

    10.4. Messages of critical errors Such errors are caused normally by structural injuries or damages. Repair is done by the service of Datcon. In case of error it is recommended to notice of the displayed error message, as well as of the phenomenon seen and communicate to the Datcon service personnel.

  • Page 63: Description Of The Menu Items

    DT4200 10.5. Description of the menu items You find a description of the menu items in the following part. A description on the handling of the menu is in Chapter 7. Settings. Display modes of limit output status (Limit Displaying) ...
  • Page 64 DT4200 Physical value assigned to 4 mA  The physical value to be assigned to the 4 mA loop current. Access is possible Any values can be defined for it within the minimum- by supervisor code only maximum interval that can be displayed . [Default factory...
  • Page 65 DT4200 Changing the User Code (User Code)  The new User Code must be typed in twice, in order to  avoid any typing errors. The mnemonic (Re-Type) warns you to type the code for the second time, after you have typed it once.
  • Page 66 DT4200 Clear minimum and maximum values (Reset Min. &  max.) Access is possible   Select for clear the minimum and maximum values. by supervisor code only Restoring the default settings (Reset 1)   When you select , all the parameters will be reset to Access is possible the default factory setting, and the instrument restarts.

  • Page 67: Messages And Error Messages During Setting Up

    DT4200 10.6. Messages and error messages during setting up The following mnemonics may displayed when the settings  are being performed. The value you have defined is lower than permissible  (Low Limit) The instrument has replaced the value you have defined to the permitted lowest value.

  • Page 68: Setting Up The Instrument (Example)

    10.7. Setting up the instrument (Example) Exercise There is a pressure transmitter with a measurement range of 5-150 bar corresponds to 4-20 mA. Let the settings of DT4200 be the following: • Number of decimals: 2. • The physical value assigned for the 4 mA current: 5.00 •...
  • Page 69 DT4200 Setting the physical 1. Pressing the ▲ button keep stepping as long as you see value assigned to 20 mA  this menu item: 2. Enter the menu item by pressing the ENTER button. 3. Pressing the ▲ button you can increase the value of the blinking number: 4.

  • Page 70: The Limit Outputs (Training Material)

    DT4200 10.8. The limit outputs (training material) Outputs The DT4200 has two optically isolated limit outputs that work independently from each other. The two outputs are equivalent. The following information and examples relate to output No.1. All these, however, are applicable for output No.2 too, without modification.
  • Page 71 DT4200 Limit output sub-menu  In the menu, the second menu-item ( ) contains all the parameters that relate to the limit output No.1. When you enter the menu, you get into a sub-menu. The menu structure is presented by the figure 7.2. Menu structure.
  • Page 72 DT4200 Detailed description of The operating modes define the conditions under which the the operating mode limit output should switch ON depending on the value of the measured and displayed physical signal.  Switched OFF  The output is always switched OFF. [default factory setting] ≥...
  • Page 73 DT4200 Example: Comment: the precondition for the following examples is Hysteresis > 0  that the output is in mode, that is, it switches ON when the measured value ≥ L1.LL (low limit). The input signal has  an increasing characteristic, but rippled.
  • Page 74 DT4200 Example: If you want the output to switch ON only once in the case of Hysteresis > 0 the signal presented by the previous example, then set the  value of the hysteresis higher than 0. In practice the hysteresis value could be depend from two aspects: •...
  • Page 75 DT4200 Detailed description of the limit value operating modes   • : Switched OFF [this is the default factory setting] Independent of the measured value, the limit output is always switched OFF.   • : It switches ON, when: measured value ≥ low limit The output switches ON, if the displayed value ≥...
  • Page 76 DT4200   • : It switches ON, when the measured value < low limit The output switches ON, if the displayed value is lower than . the numerical value defined as the parameter. . In this operating mode the value of the...
  • Page 77 DT4200   • : It switches ON, when (measured value ≥ low limit) AND (measured value ≤ high limit) The output switches ON, when the displayed value ≥ . numerical value defined as the parameter AND, . besides, it is ≤ numerical value defined as the...
  • Page 78 DT4200    • : It switches ON, when (measured value < low limit) OR (measured value > high limit) The output switches ON, when the displayed value is lower  than the numerical value defined as the parameter ...
  • Page 79 DT4200 Alarm Mode The limit output may work in Alarm mode too. This mode is  switched ON by the parameter. According to the  default factory setting it is switched off ( ). When the  Alarm mode is ON (...
  • Page 80 DT4200 Example for the practical usage of the limit outputs There is a 100-litre tank, whose liquid level is indicated by the instrument DT4200 in 0-100 litres, without decimals. Task: The limit output No.1 should control a pump, that switches ON when the liquid-level goes lower than 70 litres, and switches OFF when it goes higher than 90 litres.
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