Prozeda Primos 250 SR Installation And Operating Instructions Manual
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Prozeda Primos 250 SR Installation And Operating Instructions Manual

Controller unit for solar thermal system
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Controller unit for solar thermal systems
primos 250 SR
Installation and operating instructions
English version of original German installation and operating instructions
Version: 1.2
July 2016

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Summary of Contents for Prozeda Primos 250 SR

  • Page 1 Controller unit for solar thermal systems primos 250 SR Installation and operating instructions English version of original German installation and operating instructions Version: 1.2 July 2016...
  • Page 2 • These installation and operating instructions will hereinafter be designated as "Instructions". • The primos 250 SR controller will hereinafter be designated as "Controller". • The thermal solar power plant will hereinafter be designated as "Solar power plant". • Freely definable Prozeda function modules, complete with selectable inputs and outputs, will hereinafter be designated as "Multi-function controllers"...
  • Page 3 This manual is designed to help you use the controller properly, safely and economically. Target group This manual is addressed to all persons who carry out any of the following tasks: • Installing the controller • Connecting the controller • Putting the controller into operation •...
  • Page 4 Style conventions used in the text Specific style conventions are assigned to different elements in the manual. This makes it easy to recognise the type of text concerned: Standard text, "Menu", "Menu item", "Button designations", • lists and actions. Notes accompanied by this symbol contain information about how to operate the controller economically.

  • Page 5: Table Of Contents

    Table of contents Safety ........................7 1.1 Proper use .............................. 7 1.2 Basic safety information ........................7 Description of the controller ................... 9 2.1 Overview ..............................9 Installing the controller ..................10 3.1 Removing the terminal cover ......................11 3.2 Fastening the controller ........................12 Connecting the controller ..................
  • Page 6 10 Measuring energy output ..................40 10.1 Flow indicator............................40 10.2 Setting the energy output measurements................. 41 11 Restore factory settings ..................41 12 Networking the controller with other devices ............41 13 Faults ........................42 13.1 Faults with fault message ........................ 42 13.2 Faults without fault message ......................

  • Page 7: Safety

    • Use the RS485 interface (ProBus and ProBusX) only for networking further devices from the manufacturer Prozeda. The definition of proper use also encompasses observing and complying with all of the information contained in this manual - in particular compliance with all safety information and instructions.
  • Page 8 Safety Preventing risks of fatal injury from electric shocks • Make sure that all regulations applicable at the point of use are complied with. • Always make sure that the controller is disconnected from the power supply before carrying out any work on it. •...

  • Page 9: Description Of The Controller

    Description of the controller • Use only sensor connection boxes supplied by the manufacturer. 2 Description of the controller The controller is used for monitoring and controlling a solar thermal system. The controller allows the system to be configured in accordance with the local situation at the place of use and with the requirements of the user.

  • Page 10: Installing The Controller

    Installing the controller 3 Installing the controller DANGER Risk of fatal injuries due to explosions or fire. Never use the controller in areas where there is a risk of explosion. Install the controller on a non-flammable subsurface. DANGER Risk of fatal electric shock when working on the opened controller. Make sure that the controller is disconnected from the mains voltage before removing the terminal cover.

  • Page 11: Removing The Terminal Cover

    Installing the controller Removing the terminal cover Undo the locking screw (1). To remove the terminal cover (2), pull it off as shown here.

  • Page 12: Fastening The Controller

    Connecting the controller Fastening the controller If you wish to lead cables and lines through the back of the controller, you need to do this before you fasten it. ATTENTION Risk of damage to the controller housing due to screws tightened too firmly.

  • Page 13: Connecting The Controller

    Connecting the controller 4 Connecting the controller DANGER Risk of fatal electric shock when working on the opened controller. Make sure that the controller is disconnected from the mains voltage before removing the terminal cover. Make sure that the power supply has been secured to prevent it from being switched on again.
  • Page 14 Connecting the controller The following illustration shows the elements of the controller that are important for connection: Pos. Description Terminals for extra-low voltage area Fuse Terminals for 230 V area Terminals for protective conductor Terminals for relay contact Cut-out apertures for cable feedthrough at the back Screw clamps for securing the cables Cut-out apertures for cable feedthrough on the underside Connect the cables to the corresponding terminals.

  • Page 15: Connecting The Controller To The Power Supply

    Connecting the controller Connecting the controller to the power supply When making the mains connection, you must ensure that the mains supply can be disconnected at any time. If you make a permanent mains connection, proceed as follows: Install a switch outside the controller. If you make the mains connection complete with cable and earthing pin plug, proceed as follows: Make sure that the earthing pin plug is easily accessible.

  • Page 16: Assignment Of The Terminals To The System Components

    Connecting the controller Assignment of the terminals to the system components The connections in the following table are options that may be used in all hydraulic layouts: Terminal S4 / S4 Temperature sensor for the collector return for the "Energy output measurement" function RS-485- interface (ProBusX) Make sure that the polarity of the bus connection is not mixed up (A-A, B-B).
  • Page 17 Connecting the controller Terminal assignment for hydraulic layout 110.00 Terminal R1 / N / PE Solar circuit pump, 230 V connection. Power control for high-efficiency pump on HE1/M1 S1 / S1 Temperature sensor for collector S2 / S2 Temperature sensor for storage tank (S4 / S4) Temperature sensor of the collector return line for the "Energy yield measurement"...
  • Page 18 Connecting the controller Terminal assignment for hydraulic layout 000.00 In layout 000.00 you can use all outputs as multi-function controllers. In this case you must define at least one of the three switching outputs R1or R0 as a multi-function controller. Terminal R1 / N / PE Multi-function controller on switching output R1...

  • Page 19: Operating The Controller

    Operating the controller 5 Operating the controller This chapter provides you with an overview of the controller's display elements and operating elements. This is followed by explanations of all the basic actions. Description of the display elements The main menu is located in the top part of the display. It is comprised of the following menus: Main menu Symbol...
  • Page 20 Operating the controller When you have selected a menu, the applicable menu symbol (1) will be displayed. The bottom section of the screen displays the value (3) complete with a corresponding addition (2) and a measurement value symbol (7). Below these, status information and messages may be displayed (4–6), depending on the specific menu item.

  • Page 21: Using The Operating Buttons

    Operating the controller Using the operating buttons The operating buttons allow you to navigate in the menus and make changes to values. The following table explains the functions of the operating buttons: Operating Function buttons Display the previous menu item. Increase the displayed value.

  • Page 22: Displaying And Changing The Values In The Menus

    Displaying and changing the values in the menus Changing values To activate the displayed menu item, select The value flashes. To increase the value, select To reduce the value, select To cancel the entry, select The value stops flashing. The value that is currently set will be displayed. To confirm the entry, select The value stops flashing.
  • Page 23 Displaying and changing the values in the menus „Info“ menu Example Symbol Description Reset 75 °C Current temperature of collector – min. 12 °C Minimum temperature of collector × max. 105 °C Maximum temperature of collector × 52 °C Current temperature of storage tank min.

  • Page 24: Displaying And Changing Values In The "Program" Menu

    Displaying and changing the values in the menus Displaying and changing values in the "Program" menu The "Program" menu allows you to display and change the parameters. The "Current settings" column allows you to enter your settings. WARNING Risk of scalding from hot water as a result of incorrect settings. Exercise particular care when configuring settings on the controller.
  • Page 25 Displaying and changing the values in the menus „Program“ menu Value Symbol Description Range Factory Current setting setting menu. 13:21 00:00–23:59 12:00 Current time 23:03:11 Current date The following eight menu items apply to multi-function controllers R1 and R4. If a hydraulic layout has been selected in the "Basic settings" menu that allows for several multi-function controllers, these menu items will appear several times (once for each multi-function controller).
  • Page 26 Displaying and changing the values in the menus „Program“ menu Value Symbol Description Range Factory Current setting setting Stop 20:00 Time window 4: Stop for the 00:00–23:59 20:00 "Tube collector" and "Drain-back" functions. Only if the time controller has been activated for these functions in the "Basic settings"...

  • Page 27: Controlling Switching Outputs In The "Manual Mode" Menu

    Displaying and changing the values in the menus Controlling switching outputs in the "Manual mode" menu The "Manual mode" menu allows the controller's switching outputs to be turned on and off for test purposes. To enable the controller to run in automatic mode again, you have to exit manual mode after completion of setting tasks.
  • Page 28 Displaying and changing the values in the menus There are two operating modes: • User mode • Editing mode. In user mode you can display values in this menu, but you cannot make any changes to them. If user mode is activated, the menu symbol is displayed in the form of a "locked" symbol.
  • Page 29 Displaying and changing the values in the menus „Basic settings“ menu Position Symbol Description Range Factory Current settings settings P: 7: Pump runtime "Drain-back" function 15–360 s 180 s "Recooling" function 0–1 P: 8: 0 = Off 1 = On Only if the "Collector protection"...
  • Page 30 Displaying and changing the values in the menus „Basic settings“ menu Position Symbol Description Range Factory Current settings settings for MFC R1 P: 23: Selection of the sensor for the sink for 1–4 MFC R1 MFC R4 function at switching 0–3 P: 30: output R0...

  • Page 31: Setting The Control Functions

    Setting the control functions „Basic settings“ menu Position Symbol Description Range Factory Current settings settings 1 = ProBus, for working with conexio The change will not take effect until after the controller is restarted. * Position 16: Glycol types Selection Meaning Selection Meaning...

  • Page 32: Setting The Pump Control System

    Setting the control functions switched on when a certain specific target temperature has been reached in the collector. The "Program" menu allows you to set the following parameter: • Target temperature for the collector. Setting the pump control system You can connect standard pumps and high-efficiency pumps (HE pumps). For these you can set the following types of control system: •...
  • Page 33 Setting the control functions Controlling HE pumps with analog signals In the case of the pump control system complete with analog signal, the controller sends a 0–10 V analog signal to terminals HE1 and HE2. Definitions for the output voltage (U): •...

  • Page 34: Setting The "Tube Collector" Functions

    Setting the control functions Inverted In the case of the pump control system with an inverted PWM signal, the nominal speed of the pump (0–100 %) corresponds to the PWM signal (100-0 %). The following diagram shows the power curve for the pump control system with an inverted PWM signal at a minimum pump output of 30 %.

  • Page 35: Setting Multi-Function Controllers (Mfc)

    Setting multi-function controllers (MFC) 8 Setting multi-function controllers (MFC) Depending on the hydraulic layout, switching outputs R0, R1, R2 and R3 can be used as multi-function controllers (MFC). These can be set irrespective of the basic functions of the controller. You can assign the following functions to the multi-function controllers: •...

  • Page 36: Setting The "Temperature Difference Controller" Function

    Setting multi-function controllers (MFC) temperature rises above the upper limit of the preset temperature range (hysteresis), the switching output of the multi-function controller switches off. The "Basic settings" menu allows you to set the following parameters: • P:30: MFC R4 function at switching output R0 •...

  • Page 37: Setting Protective Functions

    Setting protective functions 9 Setting protective functions In order to protect the solar power system against frost and overheating, the controller is equipped with the following protective functions: • "Collector protection" function • "Storage tank protection" function • "System protection" function •...

  • Page 38: Setting The "Recooling" Function

    Setting protective functions When the temperature falls below the system protection temperature, the system will be in the "Collector protection" function again. When the temperature falls below the collector protection temperature, the system will be in normal operating mode. Setting the "Recooling" function ATTENTION Risk of damage to the solar power system if operated with the "Recooling"...

  • Page 39: Setting The "Anti-Freeze Protection" Function

    Measuring energy output The control type is selected in the menu "Basic settings" with the following value: • P:5: "Collector protection" function − "Drain-back" time-controlled function Time-controlled You can set a time window and a pump runtime. In the time window the solar circuit pump is switched on at certain specific intervals for the duration of the preset pump runtime.

  • Page 40: Measuring Energy Output

    Measuring energy output 10 Measuring energy output The controller can calculate and display the energy output of the solar power system. To do so, it requires the following values: • Flow rate • Temperature difference between the collector and collector return flow temperatures •...

  • Page 41: Setting The Energy Output Measurements

    Restore factory settings 10.2 Setting the energy output measurements The "Basic settings" menu allows you to set the following parameters: • P:12: Measurement principle for energy output measurement • P:15: Flow rate for the "Flow indicator" measurement principle • P:16: Energy output measurement: Glycol type •...

  • Page 42: Faults

    Faults 13 Faults ATTENTION Risk of damage to the system if faults are remedied incorrectly. Make sure that faults are only ever remedied by specialist personnel. There are two categories of system faults: • Faults that are detected by the controller and trigger a fault message •...
  • Page 43 Faults The table below shows the faults with fault messages: Fault message Possible cause Action A sensor line is interrupted. Make sure that the sensor lines Here S2 are intact. A sensor is faulty. Check the sensor resistance. If necessary, replace the sensor. flashing A short circuit has occurred in Make sure that the sensor lines...

  • Page 44: Faults Without Fault Message

    Faults 13.2 Faults without fault message The table below shows the faults without fault messages: Fault Possible cause Action No indication on the display. There is no mains voltage. Switch on the controller or connect the controller to the mains voltage. Make sure that the main fuse for the mains connection is switched on.
  • Page 45 Technical data Fault Possible cause Action The pump symbol rotates The connection to the pump Make sure that the cable without the pump actually has been interrupted. connection to the pump is running. intact. The pump has seized up. Make sure that the pump is running.

  • Page 46: Technical Data

    Technical data 14 Technical data Autonomous electronic temperature difference controller, continuous operation Housing material 100% recyclable ABS housing Dimensions L x W x D in mm 176 × 162 × 44 Protection class IP30 according to DIN 40050, EN 60529 Operating voltage AC 230 voltage, 50 Hz, –10 to +15% Standby power consumption...

  • Page 47: Resistance Table

    Resistance table 15 Resistance table With reference to the table below check the functioning of the temperature sensors using a resistance meter: Temperature in °C / Resistance in ohms –10 °C 0 °C 10 °C 20 °C 40 °C 60 °C 80 °C 100 °C 960 Ω...

  • Page 48: Disposing Of The Controller

    Disposing of the controller 17 Disposing of the controller The environmentally-friendly disposal of electronic assemblies, recyclable materials and other unit components is regulated by national and regional laws. Contact the competent local authority for detailed information on disposal. Dispose of lithium batteries in accordance with the statutory regulations. Dispose of all components in accordance with statutory regulations.
  • Page 51 1334B-TB004-12B-E...
  • Page 52 These instructions were prepared by a technical documentation office certified by DocCert- System. Address of manufacturer Prozeda GmbH In der Büg 5 D-91330 Eggolsheim Telephone: +49(0)9191/6166-0 Telefax: +49(0)9191/ 6166-22 Email: kontakt@prozeda.de www.prozeda.de...

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