Datcon DT9002 Operating Instructions Manual
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Datcon DT9002 Operating Instructions Manual

Intrinsically safe process indicator
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DT9002
Intrinsically Safe Process Indicator
Operating Instructions

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Summary of Contents for Datcon DT9002

  • Page 1 DT9002 Intrinsically Safe Process Indicator Operating Instructions...

  • Page 2: Table Of Contents

    DT9002 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 DT9002 7. Setting-up ..............25 7.1. Typing the code (password) in ..........25 7.2. The menu ................27 7.3. Display modes of limit output status (01. menu item) .... 28 7.4. Setting up the limit outputs (02. and 03. menu items).... 30 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 DT9002. 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

    2.2. Appropriate use The DT9002 is a 4-20 mA loop-powered intrinsically safe process indicator. Detailed information on the application range of the DT9002 is available in chapter 3. Product description. 2.3. Warning about misuse Inappropriate or incorrect use of the instrument can give rise to application-specific hazards, or demage to system components through incorrect mounting or adjustment.

  • Page 6: Safety Information For Ex Areas

    DT9002 2.6. Safety information for Ex areas Please note the Ex-specific safety information for installation and operation in Ex areas. 2.7. Environmental instructions Protection of the environment is one of our most important duties. Please take note of the instructions written in the following chapters: •...

  • Page 7: Product Description

    DT9002 3. Product description 3.1. Delivery configuration Delivered items The scope of delivery encompasses: • DT9002 • 1 pc. of seal (for panel cut-out sealing) • 2 pcs. of srew clamps • documentation: this oparating instructions manual quality certification Main parts The instrument is built from the following main parts: 1.

  • Page 8: Principle Of Operation

    DT9002 is housed in a DIN standard 144 x 72 mm ABS case with IP 65 protection from the front and IP 30 protection from the back side, for installation on the control panel.

  • Page 9: Adjustment

    DT9002 3.3. Adjustment DT9002 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 DT9002 displays the 4-20 mA loop current with a resolution of three decimals.

  • Page 10: Mounting

    DT9002 4. Mounting 4.1. General instructions Use the enclosed seal when mounting DT9002 on panel to assure IP 65 protection from the front side. Electrostatic hazard! Clean only a moist cloth and detergent. Mounting positions Select a mounting position you can easily read the display...

  • Page 11: Mounting Procedure

    DT9002 4.3. Mounting procedure Preparatory steps 1. Cut-out the panel according to the figure shows below. The cut-out needs special tools, it must be carried out by trained specialist personnel. Cut-out dimensions 2. Put on the enclosed seal onto the instrument case from the rear side and fit it to the instrument front panel back side.
  • Page 12 DT9002 Mounting by the fixing clamps 4. Put on the two enclosed fixing clamps onto the sides of the instrument case (Figure step 1). Fix the instrument by turning the srews in clockwise direction (Figure step 2). 20180621-V1...

  • Page 13: Connecting

    There are two different cases for the current loop to be connected: • The DT9002 acts as a terminal device of the current loop. In this case the signal comes via a pair of wires, and it does not have to go to other devices.
  • Page 14 DT9002 Connecting the cables • The DT9002 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. The following figure shows this case.
  • Page 15 DT9002 Select connection cable Take note the suitability of the connecting cable. We recommend the use of screened twisted pair cable. The wire cross-section should be 0.25-1.5 mm Select connection cable Take note of the corresponding installation regulations for for Ex applications Ex applications.
  • Page 16 DT9002 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 17 DT9002 Finishing step Check if the cables are connected properly (have you connected all the cables; have you connected them to the right place; is the connection stable; do not the cable-ends touch each other). Checking the After you have completed the connections, put the current...

  • Page 18: Display And Manual Controls

    DT9002 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 19: Characters And Mnemonics Appearing On The Display

    DT9002 6.2. Characters and mnemonics appearing on the display DT9002 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 20 DT9002 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 21 DT9002 During setting up The instrument is making calculations, please wait  (Busy) The requested operation has been completed (Ready)  The saving of the settings is being done (Save)  No, I don’t want this menu (No)  Yes, the menu can be started (Yes) ...

  • Page 22: Manual Controls

    DT9002 6.3. Manual controls DT9002 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 23 DT9002 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 24 DT9002 (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 25: Setting-Up

    DT9002 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 26 DT9002 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 27: The Menu

    DT9002 7.2. The menu The menu structure 01: Limit-value display page 28. 02: Limit value 1 03: Limit value 2 page 30. 04: Decimal point page 38. 05: Scale 4 mA page 39. 06: Scale 20 mA page 41. 07: Averaging number page 43.

  • Page 28: Display Modes Of Limit Output Status (01. Menu Item)

    DT9002 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 29 DT9002 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 30: Setting Up The Limit Outputs (02. And 03. Menu Items)

    DT9002 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 31 DT9002 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 32 DT9002 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 33 DT9002 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 34 DT9002 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 35 DT9002 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 36: Limit Output Alarm Mode

    DT9002 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 37 DT9002 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 38: Decimal Point Position (04. Menu Item)

    DT9002 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 39: The Physical Value Assigned To 4 Ma (05. Menu Item)

    DT9002 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 40 DT9002 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 41: The Physical Value Assigned To 20 Ma (06. Menu Item)

    DT9002 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 42 DT9002 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 43: The Number Of Averaged Measurements (07. Menu Item)

    DT9002 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 44 DT9002 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 45: Display Refresh Time (08. Menu Item)

    DT9002 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 46 DT9002 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 47: Tests (09. Menu Item)

    DT9002 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 48 DT9002 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 49: Changing The User Code (10. Menu Item)

    DT9002 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 50 DT9002 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 51: Changing The Supervisor Code (11. Menu Item)

    DT9002 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 52 DT9002 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 53: Display Operating Modes (12. Menu Item)

    DT9002 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 54 DT9002 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 55: Disable Displaying The Leader Zeros (13. Menu Item)

    DT9002 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 56 DT9002 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 57: Clear Minimum And Maximum Values (14. Menu Item)

    DT9002 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 58: Resetting The Default Settings (15. Menu Item)

    DT9002 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 59: 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 60: Appendix

    DT9002 10. Appendix 10.1. Technical specification Intrinsical safety data Certification: BKI 15 ATEX 0027 X, BKI 15 ATEX 0027 X/1 Marking: II 1G Ex ia IIC T6 Ga (-20 °C < Ta < 60 °C) Ex safety data Input safety data: 0...
  • Page 61 DT9002 Accuracy: 4 mA: typical 1 μA max. 3 μA (23 ˚C ±2 ˚C) 4 mA: typical 2 μA max. 7 μA (-20 - +60 ˚C) 20 mA: typical 2 μA max. 5 μA (23 ˚C ±2 ˚C) 20 mA: typical 8 μA max.

  • Page 62: Application Example

    DT9002 10.2. Application example 20180621-V1...

  • Page 63: Error Messages

    DT9002 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 64: 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 65: Description Of The Menu Items

    DT9002 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 66 DT9002 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 67 DT9002 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 68: Messages And Error Messages During Setting Up

    DT9002 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 69: 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 DT9002 be the following: • Number of decimals: 2. • The physical value assigned for the 4 mA current: 5.00 •...
  • Page 70 DT9002 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 71: The Limit Outputs (Training Material)

    DT9002 10.8. The limit outputs (training material) Outputs The DT9002 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 72 DT9002 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 73 DT9002 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 74 DT9002 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 75 DT9002 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 76 DT9002 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 77 DT9002   • : 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 78 DT9002   • : 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 79 DT9002    • : 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 80 DT9002 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 81 DT9002 Example for the practical usage of the limit outputs There is a 100-litre tank, whose liquid level is indicated by the instrument DT9002 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.

  • Page 82: Atex Certification

    DT9002 10.9. ATEX Certification 20180621-V1...
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