Circutor DHB-402 Instruction Manual
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Circutor DHB-402 Instruction Manual

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Indicator for process signals,
temperature and resistance
DHB-402 DHB-424
INSTRUCTION MANUAL
(M045B01-03-21A)

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Summary of Contents for Circutor DHB-402

  • Page 1 Indicator for process signals, temperature and resistance DHB-402 DHB-424 INSTRUCTION MANUAL (M045B01-03-21A)
  • Page 2 DHB-402 DHB-424 Instruction Manual...

  • Page 3: Safety Precautions

    CIRCUTOR, SA reserves the right to make modifications to the device or the unit specifications set out in this instruction manual without prior notice. CIRCUTOR, SA on its web site, supplies its customers with the latest versions of the device specifica- tions and the most updated manuals.

  • Page 4: Table Of Contents

    3�- UNIT INSTALLATION ��������������������������������������������������������������������������������������������������������������������������������������������������������7 3�1�- PRELIMINARY RECOMMENDATIONS ������������������������������������������������������������������������������������������������������������������������7 3�2�- INSTALLATION ���������������������������������������������������������������������������������������������������������������������������������������������������������7 3�3�- UNIT TERMINALS �����������������������������������������������������������������������������������������������������������������������������������������������������8 3�3�1�- LIST OF TERMINALS, DHB-402 MODEL ���������������������������������������������������������������������������������������������������������8 3�3�2�- LIST OF TERMINALS, DHB-424 MODELS �������������������������������������������������������������������������������������������������������9 3�4�- CONNECTION DIAGRAM ����������������������������������������������������������������������������������������������������������������������������������������� 10 3�4�1�- CONNECTION OF THE STANDARD ANALOGUE SIGNALS ������������������������������������������������������������������������������ 10 3�4�2�- CONNECTION FOR MEASURING TEMPERATURE �����������������������������������������������������������������������������������������...

  • Page 5: Revision Log

    DHB-402 DHB-424 REVISION LOG Table 1: Revision log� Date Revision Description 09/14 M045B01-03-14A Initial version 08/15 M045B01-03-15A Global revision Changes in the following sections: 02/16 M045B01-03-16A 3.3.1. - 3.3.2. - 4.6. - 5. Changes in the following sections: 03/21 M045B01-03-21A 4.7.1.1.

  • Page 6: 1�- Verification Upon Reception

    - Inputs to measure analogue voltage, current and temperature signals. - LCD Display, which displays all the parameters. - 2 alarm relays, fully programmable (DHB-402 model). - 2 analogue outputs, fully programmable. (DHB-424 model). - 4 alarm relays, fully programmable (DHB-424 model).

  • Page 7: 3�- Unit Installation

    DHB-402 DHB-424 3.- UNIT INSTALLATION 3�1�- PRELIMINARY RECOMMENDATIONS In order to use the unit safely, it is critical that individuals who handle it follow the safety measures set out in the standards of the country where it is being used, use the person- al protective equipment necessary, and pay attention to the various warnings indicated in this instruction manual.

  • Page 8: 3�3�- Unit Terminals

    Figure 1: Unit installation and attachment� 3�3�- UNIT TERMINALS 3�3�1�- List of terminals, DHB-402 model Table 2:List of terminals on the DHB-402� Unit terminals 1 :10V +, Voltage input 9: AL1, Alarm 1 relay output (NO)

  • Page 9: 3�3�2�- List Of Terminals, Dhb-424 Models

    21: A, RS-485 36: AL4, Alarm 4 relay output (NO) 29 30 31 32 33 34 35 36 DHB-402 / DHB-424 9 10 1112 131415 16 Figure 3: Terminals of the DHB-424 Note: The input, output, power supply and RS-485 communications lines are galvanically separated from each other.

  • Page 10: 3�4�- Connection Diagram

    3�4�1�- Connection of the standard analogue signals DHB-402 / DHB-424 DHB-402 / DHB-424 60 mV Figure 4: Connection of the standard signals, DHB-402 and DHB-424 models� 3�4�2�- Connection for measuring temperature Thermocouple Resistance and RTD (2 wires) Resistance and RTD (3 wires)

  • Page 11: 4�- Operation

    DHB-402 DHB-424 4.- OPERATION 4�1�- MEASURING PARAMETERS The unit measures or calculates all the parameters in Table 4 Table 4:Measurement parameters Maximum display Parameter Display range range Range: 10 V -10 ...10 V -13 ...13 V Voltage Range: 60 mV 0 ...

  • Page 12: 4�3�- Button Functions

    DHB-402 DHB-424 and there are 5 LEDs, Figure 7 Alarm LEDs Measurement time LED Figure 7: LEDs of the DHB-4xx 4 alarm LEDs, indicating the active alarm.  1 measurement time LED, indicating that the calculation time has not ended.

  • Page 13: 4�4�- Open Collector Output, Oc (Dhb-424 Model)

    DHB-402 DHB-424 4�4�- OPEN COLLECTOR OUTPUT, OC (DHB-424 model) The DHB-424 unit has an NPN-type open collector output, terminals 27 and 28 of , indicating an Table 3 over-range for the measurement. See “5.- TECHNICAL FEATURES” 4�5�- REGRESSION OF NON-LINEAR EQUATIONS Normally, an instrument's measurement is given by the equation for a line;...

  • Page 14: 4�6�- Alarms

    DHB-402 DHB-424 4�6�- ALARMS The DHB-402 unit has:  2 alarm relays, Alarm 1 and 2, terminals 9, 10, 11, and 12 of , with normally open (NO) Table 2 contact. 2 alarms, Alarm 3 and 4, fully programmable but not linked to any relay.

  • Page 15: 4�7�- Configuration

    Alarm activated Alarm DHB-402 DHB-424 activated Alarm deactivated Alarm deactivated Measured Alarm value deactivated Measured Alarm Alarm value output Measured output value Alarm Alarm output output Alarm Alarm activated activated Alarm Alarm activated activated Alarm Alarm deactivated deactivated Alarm Measured...
  • Page 16 DHB-402 DHB-424 Display screen Input parameter Inp0 Regression of non-linear equations. 0Ind0 DHB-124 dIsp0 Display parameters DHB-124 Parameters of the alarms 1, 2, 3 and 4. Alr01 DHB-124 Alr04 Parameters of the alarms 1, 2, 3 and 4. DHB-124 0oUt0...

  • Page 17: 4�7�1�- Input Parameters

    DHB-402 DHB-424 Figure 11:Password screen To modify the password, press the button. To modify the value of the selected digit, press the button repeatedly. To jump to the next digit, press the button. Once at the desired value, validate by pressing the button.
  • Page 18 DHB-402 DHB-424 To edit the parameter, press the button. The parameters that can be displayed are: RTD sensor: Pt 100 RTD sensor: Pt 500 Resistance measurement RTD sensor: Pt 1000 up to 400 Ω Measuring resistance Type J thermocouple up to 4000 Ω...
  • Page 19 DHB-402 DHB-424 4�7�1�2�- COMPENSATION VALUE Note: Parameter applicable to temperature (RTD and Thermocouple) and resistance measurement in- puts. This configuration screen is used to select the compensation value. For the RTD sensors this value is defined by the cable that joins the RTD sensor to the unit.

  • Page 20: 4�7�2�- Regression Of Non-Linear Equations

    DHB-402 DHB-424 To edit the parameter, press the button. To modify the value of the selected digit, press the button repeatedly. To jump to the next digit, press the button Once at the desired value, validate by pressing the button.
  • Page 21 DHB-402 DHB-424 To edit the parameter, press the button. To modify the value of the selected digit, press the button repeatedly. To jump to the next digit, press the button. Once at the desired value, validate by pressing the button.
  • Page 22 DHB-402 DHB-424 4�7�2�3�- EXPECTED VALUES (Yi) This screen is used to configure the value Y1 (expected value) corresponding to the first point in the equation. The screen flashes between the symbol and the configured value ( Figure 21 Figure 21:Expected values configuration screens�...

  • Page 23: 4�7�3�- Display

    DHB-402 DHB-424 4�7�3�- DISPLAY� This menu is used to configure the display features. Press the button to access the first configuration parameter. Figure 23:Display setup menu 4�7�3�1�- MINIMUM POSITION OF THE DECIMAL PLACE IN THE DISPLAY VALUE This screen can be used to assign a minimum position to the decimal point being displayed.
  • Page 24 DHB-402 DHB-424 The colour options are: Green. Orange. Red. To move from one option to another, press the button repeatedly. When you see the option you want, validate by pressing the button. The unit goes back to the screen shown in...
  • Page 25 DHB-402 DHB-424 When the button is pressed, the unit goes to the main screen of the display menu ( Figure 23 Default value: Orange. 4�7�3�4� UPPER COLOUR This screen is used to configure the upper colour of the display. In other words, this is the display colour when the measured value is above the upper colour limit (see section “4.7.3.6.
  • Page 26 DHB-402 DHB-424 To edit the parameter, press the button. To modify the value of the selected digit, press the button repeatedly. To jump to the next digit, press the button. Once at the desired value, validate by pressing the button.
  • Page 27 DHB-402 DHB-424 4�7�3�7� UNDERFLOW� This screen is used to configure the value under which underflow signals will be shown on the display The screen flashes between the symbol and the configured value ( Figure 30 Figure 30:Underflow screens� To edit the parameter, press the button.

  • Page 28: 4�7�4� Alarm 1

    DHB-402 DHB-424 Once at the desired value, validate by pressing the button. You can now select the position of the decimal point, which will be flashing. To select the position of the decimal point, press the button. Validate by pressing the button.
  • Page 29 DHB-402 DHB-424 To edit the parameter, press the button. The parameters are: Type of input that has DHB-424  been connected to the Current time unit. To move from one option to another, press the button repeatedly. When you see the option you want, validate by pressing the button.
  • Page 30 DHB-402 DHB-424 To move to the next parameter on the menu, press the button. When the button is pressed, the unit goes to the main screen of the alarms menu ( Figure 33 Default value: Manual deactivation of the alarm relay (H-off).
  • Page 31 DHB-402 DHB-424 To modify the value of the selected digit, press the button repeatedly. To jump to the next digit, press the button Once at the desired value, validate by pressing the button. You can now select the position of the decimal point, which will be flashing.

  • Page 32: 4�7�5� Alarm 2

    This menu is used to configure the parameters of alarm 2. See section “4.7.4. ALARM 1” 4�7�6� ALARM 3 This menu is used to configure the parameters of alarm 3. This alarm is not linked to a relay in the DHB-402 model. See section “4.7.4. ALARM 1” Instruction Manual...

  • Page 33: 4�7�7� Alarm 4

    DHB-402 DHB-424 4�7�7� ALARM 4 This menu is used to configure the parameters of alarm 4. This alarm is not linked to a relay in the DHB-402 model. See section “4.7.4. ALARM 1” 4�7�8� OUTPUTS (DHB-424 model) This menu is used to configure the unit's outputs.
  • Page 34 DHB-402 DHB-424 4�7�8�2� ANALOGUE OUTPUT: TYPE (DHB-424 model) This screen is used to select the type of analogue output. The screen flashes between the symbol and the configured value ( Figure 43 Figure 43:Analogue output configuration screen: type� To edit the parameter, press the button.
  • Page 35 DHB-402 DHB-424 To select the position of the decimal point, press the button. Validate by pressing the button. The unit goes back to the screen shown in Figure 44 To move to the next parameter on the menu, press the button.
  • Page 36 DHB-402 DHB-424 4�7�8�5� MODBUS COMMUNICATIONS: BAUD RATE (DHB-424 model) Screen used to configure the baud rate of the RS-485 port. The screen flashes between the symbol and the configured value ( Figure 46 Figure 46:Modbus communications configuration screens: Transmission speed�...
  • Page 37 DHB-402 DHB-424 The options available are: 8 data bits - no parity - 2 stop bits 8 data bits - even parity - 1 stop bit 8 data bits - odd parity - 1 stop bit 8 data bits - no parity - 1 stop bit To move from one option to another, press the button repeatedly.

  • Page 38: 4�7�9� Service

    DHB-402 DHB-424 4�7�8�8� EXITING THE MENU At the end of the menu the screen shown in appears. Figure 49 Press the button to go back to the main screen of the outputs menu Figure 41 Figure 49:End of menu screen�...
  • Page 39 DHB-402 DHB-424 To move to the next parameter on the menu, press the button. When the button is pressed, the unit goes to the main screen of the services menu ( Figure 50) Default value: No changes made (no). 4�7�9�2� PASSWORD This screen is used to enter a password to access the unit's setup menus.
  • Page 40 DHB-402 DHB-424 shown in Figure 53� To move to the next parameter on the menu, press the button. When the button is pressed, the unit goes to the main screen of the services menu ( Figure 50 Range: 0.00 ... 23.59.
  • Page 41 DHB-402 DHB-424 4�7�9�5� DISPLAY TEST The test screen consists of all the segments of the screen lighting up in a sequence, allowing you to verify the correct operation of all the indicator lights. The screen flashes between the symbol and the configured value. ( Figure 55 Figure 55:Display test screen�...

  • Page 42: 4�8�- Communications (Dhb-424 Model)

    DHB-402 DHB-424 4�8�- COMMUNICATIONS (DHB-424 model) The DHB-424 units have an RS-485 serial communication output with the MODBUS RTU® communi- cations protocol 4�8�1�- CONNECTIONS The RS-485 standard enables direct communications of 32 units with a single 1200 m long serial link (speed of 9600 bauds).

  • Page 43: 4�8�2�- Modbus Protocol

    DHB-402 DHB-424 4�8�2�- MODBUS PROTOCOL� The DHB-424 uses the RTU mode (Remote Terminal Unit) with its Modbus protocol. The Modbus functions implemented in the unit are as follows: Function 03 for reading multiple records. Function 04 for reading input records.
  • Page 44 DHB-402 DHB-424 Table 7: Modbus memory MAP (Table 1) INPUT PARAMETERS Address Symbol Description Type of input Value Description RTD sensor: Pt 100 RTD sensor: Pt 500 RTD sensor: Pt 1000 Resistance measurement up to 400 Ω Resistance measurement up to 4000 Ω...
  • Page 45 DHB-402 DHB-424 REGRESSION OF NON-LINEAR EQUATIONS Address Symbol Description Address 1 Address 2 Measured value for point no. 3 -19999 ... 99999 7252-7253 7626 Address 1 Address 2 Expected value for point no. 3 -19999 ... 99999 7254-7255 7627 Address 1 Address 2 Measured value for point no.
  • Page 46 DHB-402 DHB-424 REGRESSION OF NON-LINEAR EQUATIONS Address Symbol Description Address 1 Address 2 Measured value for point no. 14 -19999 ... 99999 7296-7297 7648 Address 1 Address 2 Expected value for point no. 14 -19999 ... 99999 7298-7299 7649 Address 1 Address 2 Measured value for point no.
  • Page 47 DHB-402 DHB-424 4�8�3�3- Configuration: Display parameters� The Modbus address is in decimal format. The read and write functions are enabled for all of these variables. Table 9: Modbus memory map (Table 3) DISPLAY Address Symbol Description Minimum position of the decimal place in the display value.
  • Page 48 DHB-402 DHB-424 4�8�3�4- Configuration: Alarm parameters� The Modbus address is in decimal format. The read and write functions are enabled for all of these variables. Table 10:Modbus memory map (Table 4)� ALARMS Address Symbol Description Parameter (Alarm 1) Value Description P.a1...
  • Page 49 DHB-402 DHB-424 ALARMS Address Symbol Description Alarm 2 LED Value Description Led2 4020 Interlocking of the alarm LED disabled Interlocking of the alarm LED enabled Address 1 Address 2 Alarm 2 low value PRL2 -19999 ... 99999 7212-7213 7606 Address 1...
  • Page 50 DHB-402 DHB-424 ALARMS Address Symbol Description Alarm 4 LED Value Description Led4 4028 Interlocking of the alarm LED disabled Interlocking of the alarm LED enabled Address 1 Address 2 Alarm 4 low value PRL4 -19999 ... 99999 7220-7221 7610 Address 1...
  • Page 51 DHB-402 DHB-424 OUTPUTS (DHB-424) Address Symbol Description Apply the changes entered in the RS-485 interface Value Description save 4034 Do not save changes Save changes Address 1 Address 2 Zero value of the analogue output -19999 ... 99999 7224-7225 7612...
  • Page 52 DHB-402 DHB-424 4�8�3�7- Status record The Modbus address is in decimal format. The read and write functions are valid for these variables. Table 13:Modbus memory map (Table 7)� STATUS OF THE UNIT Address Symbol Description Unit status. Describes the current status of the unit. Events may only be deleted.
  • Page 53 DHB-402 DHB-424 4�8�3�8- Unit information parameters� The Modbus address is in decimal format. The read function is valid for these variables. Table 14:Modbus memory map (Table 8) UNIT INFORMATION Address 1 Address 2 Name Description Unit Unit identifier. 7000-7001 7500...

  • Page 54: 5�- Technical Features

    DHB-402 DHB-424 5.- TECHNICAL FEATURES Model: DHB-402 Model: DHB-424 Code Auxiliary power supply Code Auxiliary power supply M22027 85 ... 253 V ~ / 85 ... 253 V M22028 85 ... 253 V ~ / 85 ... 253 V M220270020000 20 ...
  • Page 55 DHB-402 DHB-424 Relay outputs DHB-402 DHB-424 Number of relays Maximum voltage, open contacts 250 V ~ Maximum current 0.5 A Maximum switching power 1500 W or 1250 VA Electrical working life (250 VAC / 5 A) 1×10 cycles Mechanical working life 1×10...
  • Page 56 DHB-402 DHB-424 Figure 58: Dimensions of the DHB-4xx� Instruction Manual...

  • Page 57: 6�- Maintenance And Technical Service

    DHB-402 DHB-424 6.- MAINTENANCE AND TECHNICAL SERVICE In the case of any query in relation to device operation or malfunction, please contact the CIRCUTOR, SA Technical Support Service. Technical Assistance Service Vial Sant Jordi, s/n, 08232 - Viladecavalls (Barcelona) Tel: 902 449 459 ( España) / +34 937 452 919 (outside of Spain) email: sat@circutor.com...

  • Page 58: 8�- Ce Certificate

    DHB-402 DHB-424 8.- CE CERTIFICATE Instruction Manual...

  • Page 59: Appendix A: Display Messages

    DHB-402 DHB-424 APPENDIX A: DISPLAY MESSAGES The error screens shown in may appear after the unit is switched on or while it is measuring� Table 15 Table 15:Error messages Error messages Overflow of the measured value above its range. This message...
  • Page 60 CIRCUTOR, SA Vial Sant Jordi, s/n 08232 -Viladecavalls (Barcelona) Tel.: (+34) 93 745 29 00 - Fax: (+34) 93 745 29 14 www.circutor.es central@circutor.es...

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