Delta Controls RTS-424 Application Manual
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Delta Controls RTS-424 Application Manual

Room temperature sensor
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Product Description
The RTS-424 is an intelligent 4-button room sensor with a custom
LCD that is designed to be an Intelli-stat (RTS-406) replacement.
The RTS-424 can be connected to V2 Intelli-Con panels, DCUs, or
Application Controllers loaded with V2 firmware. It is capable of
displaying a wide range of digital or analog values, as well as three-
digit 7-segment alpha-numeric text.
Contents
MODEL NUMBERS...............................................................................................................3
OTHER RELEVANT DOCUMENTS ..................................................................................3
IMPORTANT INFORMATION! ..........................................................................................3
DEVICE CONFIGURATION (KEYPAD) ...........................................................................4
CHOOSING THE MODE OF OPERATION.......................................................................6
COMMUNICATION ..............................................................................................................7
RTS MODE OF OPERATION PROGRAMMING.............................................................8
Document Edition 1.0
APPLICATION GUIDE
Room Temperature Sensor:
............................................................................................. 6
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RTS-424 (Rev 4.2)
Document Edition 1.0
................................................................. 7
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Page 1 of 26

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Summary of Contents for Delta Controls RTS-424

  • Page 1: Table Of Contents

    RTS-424 (Rev 4.2) Document Edition 1.0 Product Description The RTS-424 is an intelligent 4-button room sensor with a custom LCD that is designed to be an Intelli-stat (RTS-406) replacement. The RTS-424 can be connected to V2 Intelli-Con panels, DCUs, or Application Controllers loaded with V2 firmware.
  • Page 2 EADING EMPERATURE ............20 EADING THE OCAL ETPOINT ............20 EADING IGHT ETPOINTS ..............21 LEARING UTTON RESSES RTS-424 D ......21 RITING TO THE ISPLAY AND ETPOINTS ................22 CTIVATING CONS ENH MODE PROGRAMMING EXAMPLE ..............24 Page 2 of 26 Document Edition 1.0...

  • Page 3: Model Numbers

    3. The RTS-424 is NOT upgradeable to a DNS-24. 4. When using a RTS-424 directly connected to the Turbo or Mini-Turbo, make sure that there is no Intelli-Con Zone Controller or Micro controller addressed as one (1) on the panel zone network. All communications to the RTS-424s are routed through address one.

  • Page 4: Device Configuration (Keypad)

    9. Local setpoints are automatically retained on power failure. 10. When in RTS Mode the RTS-424 will round the displayed temperature to the nearest whole number such that the temperature display will only display nn.0. This is a limitation of the original I-stat protocol.
  • Page 5 1) No – Do not store a setpoint in the RTS-424 2) Yes – Store and display a setpoint in the RTS-424 3) Hide – Store but only display a setpoint in the RTS-424 when the up or down buttons are pushed.

  • Page 6: Choosing The Mode Of Operation

    Room Temperature Sensor Application Guide Choosing the Mode of Operation Menu Item Description Line 3 (Bottom – i.e., Setpoint Value): 1 to 5 - Disabled - No Setpoint until an arrow button is pressed (adjustable) - Setpoint is always displayed (adjustable) - No Setpoint until an arrow button is pressed (not adjustable) - Setpoint is always displayed (not adjustable) House &...

  • Page 7: Communication

    Communication Initiating Communication Communication to the RTS-424 is set up in exactly the same manner as with the I-stat (RTS-406); the appropriate Input and Output points must be created to initiate communication. See the RTS Mode of Operation Programming and ENH Mode of Operation Programming for more information on how to initiate communication.

  • Page 8: Rts Mode Of Operation Programming

    16 physical inputs Create the next highest input for an RTS-424 addressed as 2 and so on. Assign a 10K thermistor scale range to the inputs to scale the input to deg C or deg F. If expansion boards are used, create an analog input with an instance number one higher than possible according to the expansion board slot width set in the CP object.

  • Page 9: Clearing Button Presses

    Reading two buttons held down at the same time (local setpoint disabled) The RTS-424 is capable of reading 2 buttons held down at the same time as a unique number. The coding is based on the values of each single button:...

  • Page 10: Activating Icons

    Icons are activated by setting the output .FUNCTION property to 0.4, then writing a value to the RTS-424. The RTS-424 will interpret the value as a particular icon and display it on the glass. Please refer to the Icon table below for Icon activation and deactivation codes.

  • Page 11: Using The Local Setpoint Feature

    Using the Local Setpoint Feature The RTS-424 has the ability to store a setpoint locally, and display it in the lower portion of the LCD. It also has the ability to store the setpoint high and low limits locally. To activate this feature please see the Configuration Menu Options table above.

  • Page 12: Other Display Functions

    RTS424_DISPLAY = 200 + DAY_SP ELSE RTS424_DISPLAY = 200 + NIGHT_SP ENDIF Other Display Functions The RTS-424 is capable of performing all the same functions as the Intelli-stat. Please refer to the table below for detailed information. Display Functions Function Comments...
  • Page 13 Room Temperature Sensor Application Guide RTS Mode of Operation Programming Alpha numeric encoded display See the RTS-424 character table below Reserved Icon activation and local setpoints See previous Activating Icons section Write to Line 1 of the display Alphanumeric Reserved...
  • Page 14 *Due to the limitations of a seven segment display, these characters will not look correct. The code assigned to the appropriate RTS-424 output to display the alpha characters is calculated by adding the codes for the left and right digits together.

  • Page 15: Rts Mode Programming Example

    Room Temperature Sensor Application Guide RTS Mode Programming Example RTS Mode Programming Example The following section is an example of a typical room control program for the RTS-424 when in RTS Mode. Step 1: Set the following Menu items to the indicated values:...
  • Page 16 Room Temperature Sensor Application Guide RTS Mode Programming Example Step 3: Read through the code and create the necessary points in a database. Enter the following code into a program and test the program. Note that some of the timing may have to be adjusted for your particular application. [SETPOINTS] HI_SETPOINT = 24 LO_SETPOINT = 18...
  • Page 17 ELSE SEQUENCE = LIMIT(SEQUENCE - 1 , 0 , 5 ) ENDIF ENDDO [READ/WRITE TO RTS-424] IF (RTS424_TEMP.SWITCH = 0) THEN \ [NO BUTTONS HAVE BEEN PRESSED] IF (SEQUENCE = 0) OR (SEQUENCE = 5) THEN \ [DISPLAY ROOM TEMP]...
  • Page 18 Room Temperature Sensor Application Guide RTS Mode Programming Example ENDIF ELSE IF (SEQUENCE = 3) THEN \ [SET DAY/NIGHT SETPOINT] IF (OCCUPIED = ON) THEN RTS424_DISPLAY = 200 + DAY_SP ELSE RTS424_DISPLAY = 200 + NIGHT_SP ENDIF ELSE IF (SEQUENCE = 4) THEN \ [SET LOW SETPOINT ADJUST LIMIT] IF OCCUPIED = ON THEN RTS424_DISPLAY = 300 + LO_SETPOINT...

  • Page 19: Enh Mode Of Operation Programming

    16 physical inputs Create the next highest input for an RTS-424 addressed as 2 and so on. If expansion boards are used, create an analog input with an instance number one higher than possible according to the expansion board slot width set in the CP object.

  • Page 20: Reading The Local Setpoint

    Room Temperature Sensor Application Guide ENH Mode of Operation Programming Note: there is a slight mismatch between the value displayed on the RTS and the value displayed in ORCAview. This can be partially corrected for using by using the calibration field of the IP. In ENH Mode values other than the temperature (i.e.

  • Page 21: Clearing Button Presses

    ENDIF Writing to the RTS-424 Display and Setpoints To write values to the display on a RTS-424 addressed as 1, create an output with an instance number set according to the following example: Type of Control Panel (exp board slot width set to 0)

  • Page 22: Activating Icons

    The simplest way to control the RTS-424 is to pre-configure the setpoints and simply read the values instead of writing the setpoints. The following program is an example of how to control the local setpoints and change the...
  • Page 23 Room Temperature Sensor Application Guide ENH Mode of Operation Programming 424 will interpret the value as a particular icon and display it on the glass. Please refer to the Icon table below for activation and deactivation codes. The following is an example of how to display the Fan icon: [CONTROL FAN ICON] IFONCE (FAN ON) THEN RTS424_DISPLAY.FUNCTION = 0.2...

  • Page 24: Enh Mode Programming Example

    Room Temperature Sensor Application Guide ENH Mode Programming Example ENH Mode Programming Example The following section is an example of a typical room control program for the RTS-424 when in RTS Mode. Step 1: Set the following Menu items to the indicated values:...
  • Page 25 Read through the code and create the necessary points in a database. Enter the following code into a program and test the program. Note that some of the timing may have to be adjusted for your particular application. [***RTS-424 PROGRAM***] [SETPOINTS]...
  • Page 26 SET OVERRIDE ENDIF IF (OVERRIDE ON_FOR 2H) THEN RESET OVERRIDE ENDIF [CLEAR BUTTON PRESSES AND RESTORE COMM] [255 INDICATES THAT THE RTS-424 COMM HAS BEEN INTERRUPTED] IF (RTS424_TEMP.SWITCH = 255) THEN DO_EVERY 30S COMMAND "IP12 RESET" \ [RESTORE COMM] ENDDO ELSE IF (RTS424_TEMP.SWITCH >...

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