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Summary of Contents for Technische Alternative ESR 31 Series
- Page 1 ESR 31 Version 2.0 EN Simple solar control unit Operation Installation instructions...
- Page 3 This instruction manual is available in English at www.ta.co.at Diese Anleitung ist im Internet auch in Deutsch unter www.ta.co.at verfügbar. Ce manuel d’instructions est disponible en langue française sur le site Internet www.ta.co.at Questo manuale d’istruzioni è disponibile in italiano sul sito Internet www.ta.co.at Estas instrucciones de funcionamiento están disponibles en español, en Internet www.ta.co.at.
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Page 4: Table Of Contents
Table of contents Safety requirements ......................5 Maintenance ..........................5 Generally applicable rules for the correct use of this control unit ..........6 Hydraulic diagrams ........................ 7 Program 0 – 2 -Solar thermal system ..................7 Program 4 – 7 - Loading pump control ..................8 Program 8, 9 - Air flap control for an earth collector .............. -
Page 5: Safety Requirements
Safety requirements All installation and wiring work on the controller must only be carried out in a zero-volts state. These instructions are intended exclusively for authorised professionals. The opening, connection and commissioning of the device may only be carried out by competent personnel. In so doing, all local security re- quirements must be adhered to. -
Page 6: Generally Applicable Rules For The Correct Use Of This Control Unit
Generally applicable rules for the correct use of this control unit The manufacturer of the control unit cannot be held liable for any indirect damage to the system if the party that installs the system does not install any additional electromechanical devices (thermostat, possibly in combination with a one-way valve) to protect the system from damage as a result of a malfunction under the following conditions: Solar thermal system for swimming pools: An excess temperature thermostat and a... -
Page 7: Hydraulic Diagrams
Hydraulic diagrams Program 0 – 2 -Solar thermal system Program 0 = factory settings S3 for program 1 and 2 Required settings : max … limit TK S2 max2 … see program 1 or 2 diff min2 … see program 2 …... -
Page 8: Program 4 - 7 - Loading Pump Control
Note: In programs 0 - 2, the system condition "Collector - excess temperature reached" is indicated in the menu Status by the advice CETOFF for Collector Excess Temperature switch off. Some countries only offer subsidies for the installation of solar thermal systems if the control units have a function check to detect a sensor defect and a lack of circulation. -
Page 9: Program 8, 9 - Air Flap Control For An Earth Collector
Program 7 Required settings : min 2 max … limit TK S2 min … switch-on temp. energy generator 1 S1 min2 … switch-on temp. energy generator 2 S3 diff diff 2 … energy generator 1 S1 – TK S2 diff diff2 …... -
Page 10: Program 12 - Burner Requirement Using Holding Circuit
Program 12 - Burner requirement using holding circuit Required settings : max … limit S1 (ex works = 65°C) min … switch-on threshold S2 (ex works = 40°C) The output switches on when S2 < min and only switches off when S1 > max. In other words, boiler requirement when S2 falls short of min... - Page 11 Generally for all programs (16, 17): No thermostat function or differential switching function is activated. Calling one of these two programs the measuring speed of the input S2 is automatically increased from AV 1.0 to AV 0.4 (see in the menu MEN under SENSOR) and the speed control is activated as an alternative parameter list with the following factory settings(see in the menu MEN under PSC): Abs.
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Page 12: Operation
Operation The large display contains all of the icons for all of the important information and a field for plain text. Navigation with the co-ordination keys is adapted to the display structure. ... -
Page 13: The Main Level
The main level Temperature Temperature Temperature Sensor 1 Sensor 2 Sensor 3 External value 1 External value 6 Speed stage Only displayed if Only displayed if ESR31-D only external DL is external DL is and active PSC activated activated Analogue stage Volume flow Current power only if control out-... - Page 14 Displays the value measured at the sensor (S1 - T1, S2 - T2, S3 – T3). T1 to T3 E1 to E6 Displays the values from external sensors which are read via the DL-bus. Only activated inputs are displayed. ERR means that no valid value has been read. In this case the external value is set to 0.
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Page 15: Changing A Value (Parameter)
Further sensor display types: Radiation in W/m² Digital state Flow in l/h (sensor (radiation sensor) (0=OFF, 1=ON) 3 = VFS 2-40) (digital input) If in the SENSOR menu (main menu MEN) one sensor is set to OFF or a volume flow encod- er VSG is defined, then the value display of this sensor is hidden at the main level. -
Page 16: The Parameter Menu Par
The parameter menu PAR (Version number, program number, min, max, diff, auto/manual mode) In the following example the PAR menu has been selected for program 5 so that all setting parameters (max2, min) can be displayed. Code to enter menu Version number Program number Max limit switch-off... -
Page 17: Software Version Vr / Vd
Software version VR / VD Software version of the device (VR = version with relay output, VD = speed version). It can- not be changed as it indicates the intelligence of the device and must be provided if there are any queries. - Page 18 Schematic representation of setting values...
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Page 19: Automatic / Manual Mode
Automatic / manual mode O AUTO The output is set to automatic mode and can be switched for test purposes to manual mode (O ON, O OFF). When the manual mode has been selected, an icon appears at the top. If the hand symbol is displayed, the control function is deactivated. -
Page 20: The Menu Men
The menu MEN The menu contains basic settings to specify additional functions such as sensor type, func- tion check, etc. Navigation and changes are done as usual with the keys , while the dialogue is only set up in the text line. As the settings in the menu can change the basic features of the control unit, only a tech- nician who has the code can open this level. -
Page 21: Language Deut, Eng
SENSOR Sensor menu: indication of the type of sensor or a fixed temperature for an input that is not used. SYS PF System protective functions: switch off the solar thermal system when a critical collector temperature has been reached; anti-freeze function for the collector. STARTF Start function: start help for solar thermal systems. -
Page 22: Sensor Settings
Sensor settings Sensor S3 has been used as example for the sensor settings, since this sensor has the most setting options. Sensor (3x) Determination of average PT1000 Radiation sensor Fixed value Transfer of values Digital input Fixed value entry Transfer of values setting setting Sensor OFF... -
Page 23: Sensor Type
Sensor type Solar collectors reach standstill temperatures of 200 to 300°C. No value above 200°C is expected due to the sensor installation point and physical properties (dry steam does not conduct heat well, for instance). The standard PT1000 series sensors can be permanently exposed to 250°C and briefly to 300°C. -
Page 24: Creating A Mean (Average) Av
Creating a mean (average) AV Set the number of seconds during which an average should be calculated. (ex works = 1.0s) AV1 1.0 Create an average of sensor S1 for 1.0 seconds For simple measurements, 1.0-2.0 should be selected. A large average slows everything down and is only recommended for the sensors for the heat counter. -
Page 25: Collector Excess Temperature Cet
Collector excess temperature CET Steam occurs in the system during standstill. When the system automatically switches on again, the pump does not have enough pressure to raise the fluid level above the highest point in the system (collector supply line). This represents a considerable load on the pump when there is no circulation. -
Page 26: Start Function Startf (Ideal For Tube Collectors)
Start function STARTF (ideal for tube collectors) Solar thermal systems sometimes start too late in the morning when the collector sensor does not come into contact with the warm heat transfer medium in time. Flat collector fields or vacuum tubes with forced circulation often lack sufficient gravity pull. The start function tries to release a rinsing interval while constantly monitoring the collector temperature. -
Page 27: After-Running Time Art
Radiation value (radiation threshold) in W/m above which rinsing is allowed. Without a radiation sensor, the computer calculates the necessary temperature increase for the long-term mean that launches rinsing from this value. (ex works = 150W/m Adjustment range 0 to 990 W/m² in 10 W/m² steps Pump run-time (rinsing time) in seconds. -
Page 28: Pump Speed Control Psc (Only Esr31-D)
Pump speed control PSC (only ESR31-D) Pump speed control PSC is not suitable for electronic or high efficiency pumps. Warning! The values in the following description are by way of example only; they must, in all cases, be matched to the system! Absolute value Desired value for Differential control... - Page 29 The pump speed control can be used to change the delivered quantity - i.e. the volume flow - of usual commercial circulating pumps in 30 steps. This provides constant levels of (differential) temperatures in the system. The speed control is disabled ex works. When active, it receives the signal to control from the overriding differential switch, i.e.
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Page 30: Absolute Value Control
Absolute value control = maintaining a sensor S1 can be kept at one temperature (such as 60°C) very well by using the speed control. If the solar radiation is reduced, S1 becomes colder. The control unit then lowers the speed and hence the flow rate. -
Page 31: Differential Control
Differential control = keeps the temperature constant between two sensors. Keeping the temperature difference constant between S1 and S2, for instance, allow for “shifting” operation of the collector. If S1 drops due to lower irradiation, the difference be- tween S1 and S2 thus drops. The control unit then lowers the speed, which increases the dwell time of the medium in the collector and hence the difference between S1 and S2. -
Page 32: Event Control
Event control = If a set temperature event occurs, the speed control starts, thus keeping a sensor con- stant. If, for instance, S3 reaches 55°C (activation threshold), the collector should be kept at a certain temperature. Maintaining a sensor then works as with absolute value control. EC N31 Event control in normal operation, an event at sensor S3 leads to a constant level at sensor S1. - Page 33 Stability problems The speed control has a “PID controller”. It ensures an exact and fast adjustment of the ac- tual value to the set point. In applications such as solar power systems or feed pumps, the following parameters should be left in factory settings. With a few exceptions, the system will run stably.
- Page 34 Pump standstill The wave packet method allows for variations in the volume flow by a factor of 10 in 30 in- crements. If the flow rate is too low, flap valves may cause a system standstill. In addition, low power stages at low speeds may cause the rotors to stop. Such a standstill may some- times be desired, which is why stage 0 is allowed as the lowest stage.
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Page 35: Control Output Cop 0-10 V / Pwm
Control output COP 0-10 V / PWM Different functions of the control output Control output 5V power supply 0 - 10V output deactivated for vortex sensors PWM output Error message Error message (upon error 0 to (upon error in- 10 V switchover) verse switchover from 10 to 0V) Control output deactivated;... - Page 36 The following settings are only possible in 0-10V and PWM modes. Warning! The values in the following description are by way of example only; they must, in all cases, be matched to the system! Control output Output for release Absolute value Desired value for control abs.
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Page 37: Function Check F Chck
Setting of the output to release the analogue output. Setting range: OP 1 = The analogue output is only released if the output is also switched on. (ex works = --) OP -- = The analogue output is not assigned to the output. Function check F CHCK Some countries only offer subsidies for the installation of solar thermal systems if the con- trol units have a function check to detect a sensor defect and a lack of circulation. -
Page 38: Heat Quantity Counter Hqc
Heat quantity counter HQC ON/OFF Sensor supply line Sensor return line Encoder or vortex Litres per pulse - LPP only displayed when sensor sensor type S3 = VSG (pulse encoder) No volume flow Fixed volume flow encoder Share of antifreeze Sensor adjustment Reset counter (see description) - Page 39 The setting of the type of volume flow encoder used is made in menu "SENSOR". A volume flow encoder can only be connected to input S3. S3 = KTY, PT, GBS, fixed value, accept value, digital, OFF or VTS (Vortex temperature) = No volume flow encoder S3 = VF2 (vortex sensor 2-40l/min) A vortex volume flow encoder (electronic volume flow encoder VFS 2-40) is connect-...
- Page 40 Temporary temperature difference between the supply and return line sensor (Maximum display ±8.5 K, additionally an arrow is displayed). If both sensors are immersed in one bath for test reasons (with both thus measuring the same tem- peratures), the device should display “DIF 0.0”. Sensor and measurement equip- ment tolerance may, however, lead to a displayed difference under DIF.
- Page 41 "Step by step" setting of the heat quantity counter You have the option of using 2 different volume flow encoders: the pulse encoder VSG, the FTS….DL, which is connected to the data link. If you do not use a volume flow encoder, then you can only set a fixed volume flow. In the following, the necessary settings are displayed "step by step".
- Page 42 FTS….DL (Example: fitting in the return, use of an external sensor for the pre-run which is connected to the FTS4-50DL) The FTS4-50DL is connected to the data link (external sensor), hence: menu "EXT DL", setting of the volume flow encoder in the display of the external sensor "E1": 11 (address 1, index 1) Setting the sensor temperature of the FTS4-50DL for the return: menu "EXT DL", in the display "E2": 12 (address 1, index 2)
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Page 43: External Sensors Ext Dl
External sensors EXT DL Address for Address for Address for external value 1 external value 2 external value 6 Electronic sensors for temperature, pressure, humidity, differential pressure, etc. are also available in the DL version. In this case, the supply and signal transmission takes place via the DL bus. -
Page 44: Status Display Status
Status display Status The status display provides information in special system situations and problems. It is mostly intended for use with solar thermal systems, but can also be useful with other dia- grams. The status display can then only operate if an active function check is set off via de- fective sensors S1 –... - Page 45 Function check activated Function check Function check Collector - excess activated error no error temperature cut-off occurred active (no error occurred) Error sensor 1 Error sensor 2 Sensor 3 no error (interruption) (short circuit) Circulation error Reset error only displayed when occurred No circulation error...
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Page 46: Installation Instructions
Installation instructions Sensor installation The sensors must be properly arranged and installed for the system to function correctly. Collector sensor (red or grey cable with connection box): Either insert the sensor in a pipe directly soldered or riveted to the absorber and extending out of the collector casing or screw the sensor onto a T piece on the end of the supply line’s collecting tube using an immersion sleeve. -
Page 47: Installing The Device
The bi-directional data link (DL-Bus) was developed for the ESR/UVR series and is only compatible with products of the Technische Alternative company. Any cable with a cross section of 0.75 mm² can be used for the data link (e.g. twin-strand) having a max. length of 30 m. -
Page 48: Tips On Troubleshooting
Tips on troubleshooting In general, all of the settings in the menus PAR and MEN and the terminals should first be checked if there is a malfunction. Malfunction, but “realistic” temperature values: Check program number. Check the switch-on and switch-off thresholds and the set differential temperatures. Have the thermostat and differential thresholds already been reached? Were the settings in the submenus (MEN) changed? Can the output be switched on and off in manual mode? If an endurance run and... -
Page 49: Table Of Settings
Table of settings If the control system fails unexpectedly, all of the settings must be repeated for initiation. In such cases, problems can be prevented by entering all of the set values in the following ta- ble. This table must be provided in any correspondence. Only then is a simulation possi- ble to detect the cause of the error. - Page 50 Control output 0-10V/PWM COP OFF/5V/0-10V/PWM Output OP Abs.value control AC Desired value DVA 50°C °C Diff. control system DC Desired value DVD 10 K Event control syst. EC Desired value TVE 60°C °C Desired value DVE 110°C °C Proportional part PRO Integral part INT Differential part DIF Min.
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Page 51: Technical Data
Technical data Power supply: 210 ... 250V~ 50-60 Hz Power input: max. 3 VA Fuse: 3.15 A fast-acting (device + output) Supply cable: 3x 1mm² H05VV-F conforming to EN 60730-1 Case: plastic: ABS, flame resistance: Class V0 to UL94 Norm Protection rating: II - protective insulation Protection class:... - Page 52 EC- DECLARATION OF CONFORMITY Document- Nr. / Date: TA12001 / 19.11.2012 Company / Manufacturer: Technische Alternative elektronische SteuerungsgerätegesmbH. Address: A- 3872 Amaliendorf, Langestraße 124 This declaration of conformity is issued under the sole responsibility of the manufacturer. Product name: ESR31-D, ESR31-R Product brand: Technische Alternative GmbH.
- Page 56 Legal notice These assembly and operating instructions are protected by copyright. Use outside the copyright requires the consent of the company Technische Alternative elektronische Steuerungsgerätegesellschaft m. b. H.. This applies in particular to reproductions, translations and electronic media.
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Questions and answers
About the senser ESR31. How do I ser which line is grund?
The ground line on the Technische Alternative ESR 31 Series sensor is determined by ensuring proper grounding according to the installation instructions. The document mentions that all sensor grounds are internally interconnected and can be interchanged. Proper grounding is essential to prevent damage from lightning or electrostatic discharge. Always follow the markings on the sensor's label and use the designated terminal for protective grounding.
This answer is automatically generated