Technical Manual Cold Storage Controller TARN 1370, TARN 21370 Software Version 211204 No. 5311231-01/00 E Features l 3 control relays: R1: Solenoid Valve, R2: Defrost Heater R3: Choice of Fan or Alarm l Programmable Defrost Control by Cycle Timer & Temperature with Manual Defrost Override Option l Programmable Fan Control by Time / Temperature l Over-/Under Temperature Alarm l Operates with TF 201 or TF 501 (Pt1000)sensors Operating Elements refrig. ON Please Note Safety Instructions ! Parameters All adjustable parameters are assigned a “P” number. See listing on page 2 for details. defrost ON fan ON alarm increase values Programming / enter decrease values P TAR Calling up and editing Press "P" key ........... parameter number is displayed Press 'ñ/ò' ............... select desired parameter Press "P" again ........ parameter value is displayed Press 'ñ/ò' ............... adjust parameter value Press 'P' again ......... new value is stored, display returns to “P” number. ELREHA Access Authorization Key parameters have an access code requirement to prevent unauthorized changes from being made. All remaining parameters can be changed without an access code (see PARAMETER Listing on page 2 for parameters requiring code): decimal point flashes if night setpoint is active Auto scrolling Hold 'ñ/ò'-keys to scroll values automatically. Manual Defrost Manual defrost can be initiated while the display shows the actual value by pushing 'ñ' for more than 3 seconds - to terminate: press 'ò' for more than 3 seconds. Control Model Number Display By holding the "P" key for more than 2 seconds, the Control Model Number will be displayed (137). Press "P" key ............. parameter number is displayed Use "ñ/ò" ................. select "P38" Press "P" again ......... Display will show "00" Use "ñ" ..................... set value to --88-Press "P" again ......... code is stored Use "ñ/ò" ................. select desired "P" number to adjust If no key is pressed within four minutes, the access code will cancel and authorization access lock will be restored automatically. ELEKTRONISCHE REGELUNGEN GMBH page 2 Param. No. P01 P02 P03 P04 P05 P06 P07 P08 P09 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 Technical Manual TARN x1370 Cold Storage Controllers Code Description no 88 88 88 88 88 88 88 88 88 88 88 88 88 70 Actual temperature control sensor (°C or °F) Actual temperature evaporator (limit-) sensor Setpoint 2nd Setpoint (Night-Setpoint) Start-up of night-setpoint (in 10 minute steps) Stop of night-setpoint (in 10 minute steps) Highest adjustable setpoint Lowest adjustable setpoint Setpoint hysteresis Switching mode of cooling (compressor) relay Cooling relay delay on start-up Fan trailing temperature Fan operating mode Fan restart delay after defrost Remaining minutes till defrost ends Remaining minutes till restart of cooling Remaining minutes till restart of fan Remaining minutes up to an alarm Calibration of control sensor Calibration of evap. sensor / sensor OFF Sensor type / °C or °F / measuring range Parameter listing - Please note that you need a different code for changing the type of sensor. - Default values are factory set values. P22 P23 88 88 Defrost termination temperature in °C or °F Defrost type (independent from P10) P24 88 Defrost cycle P28 P29 P30 88 88 88 Defrost safety operation time Drain time, refrigeration delay after defrost Mode of relay #3 Set parameters to factory default: Switch supply voltage OFF, press and hold the 'P'-key, switch supply voltage ON. Hold key for about 5 more seconds. While holding the key, the display shows one by one: software-version, date and 'def.' ('def' = all parameters are set to default now). P31 88 Alarm delay P32 P33 P37 P38 88 88 no no Alarm high limit temperature (relative to P03) Alarm low limit (absolute value) Manual defrost Access Code Range display only display only Lowest (P08)...highest (P07) ± 100 °C (-148...212 °F) 0...235, oFF 0...235, oFF ± 100 °C (-148...212 °F) -100°C / -148°F up to (P07) 0,3...20,0 K 1= refrigeration, 2= heating 0...59 minutes -100°C... +100°C (hyst. 3K fixed) 1=, 2=, 3=, see text 0...30 minutes display only display only display only display only +/-10,0 K/F +/-10,0 K/F, oFF 1= TF 501 / °C / -110...+120°C 2= TF 201 / °C / -55...+105°C 3= TF 501 / °F / -166...248°F 4= TF 201 / °F / -67...221°F 5= TF 202 / °C / -55...+105°C 6= TF 202 / °F / -67...221°F 0,0...30,0°C / 118,0°F 1= electric, 2= hot gas, 3= electric+AZV, 4= hot gas+AZV 5= electric+DH, 6= hot gas+DH 7= electric+AZV+DH 8= hot gas+AZV+DH 1...99 hours 1...120 minutes 0...99 minutes 0 = relay is alarm relay, active ON 1 = relay is alarm relay active OFF 2 = like '0', but internal buzzer OFF 3 = like '1', but internal buzer OFF 4 = alarm is resettable 5 = relay is evaporator fan relay 1...99 minutes (if sensor fails always < 1 minute + flashing display 0...100 K ± 100 °C "ñ"= Start defrost, "ò"= Terminate 0...99 Default A B 0 0 oFF oFF +50 -50 2K 1 2 50 1 3 -22 -20 2K 1 2 1 3 0K 0K 2 2 10 1 10 1 4 4 30 0 30 0 5 5 100 -100 100 -100 0 0 Your value Technical Manual TARN x1370 Cold Storage Controllers page 3 Functional Description Display & Sensors Parameter P21 allows you to choose display in °C or °F, as well as sensor type and temperature range. The TARN 1370/21370 will operate with any of the following sensor types: TF201, TF 202 as well as TF501 (Pt1000), each of which has a specific temperature range. The display resolution for both sensor inputs is 0.1K (0.2°F). Note: If only one sensor input is needed, the 2nd input can be disabled. Temperature alarm An temperature alarm is indicated by : • an alarm LED on the front of the control • a built in audible alarm • an alarm relay (when R3 is designated as an alarm relay in Parameter P30). Parameter (P30) allows you to select the Alarm Configuration (ex. Alarm relay active/not active, with audible alarm/without audible alarm, manual reset option active/not active, etc.) Temperature Control Parameter (P03) defines the desired temperature, or “setpoint”. The controller compares the actual room temperature, (P01), with the setpoint, and activates the cooling relay as needed. This relay can activate a solenoid valve or a compressor to achieve the desired temperature as defined in (P03). Parameter (P09) allows the adjustment of the switching hysteresis (differential) to prevent the system from short cycling. A pause delay (P11) prevents the compressor from switching ON again immediately. If the temperature measured by the control sensor exceeds the range set by parameters (P32/ P33), a delay timer (P31) starts. After this timer runs down, an alarm will be activated. (P32) (high limit) is relative to setpoints (P03/P04). (P32) will adjust proportionally to the setpoints. Setpoint range With parameters P07/P08 you can define the range within which the setpoint can be adjusted. This prevents unauthorized personnel from making an adjustment outside of the desired operating range. R1 Control Mode Parameter P10 defines the operation mode of R1. Mode 1 = refrigeration, Mode 2 = Heating. See diagrams below for details. (P18) displays the remaining time until the alarm is activated. Once the measured temperature is restored within operating range, the relay will reset automatically. Defrost The R2 output is used to control a defrost device. R1 is automatically disabled when a defrost event is in progress, preventing simultaneous cooling and defrosting. Defrost Initiation l by internal cyclic timer (P24) l manually (P37). activated de-activated 6 = Cyclic Hot Gas Defrost + DH 7 = Heater or Airflow Defrost depending on + DH 8 = Hot Gas Defrost depending on + DH DH is the 'Display Hold' function (see below) Manual Defrost l Parameter P37 enables you to start a defrost cycle by pressing the "ñ" key, unless the sensor is already above termination temperature. or l When the control is in its default mode, (P01), and the temperature is on the display, a defrost event can be manually initiated by pressing the "ñ" key for more than 2.5 sec. Defrost Termination l Thermal termination. Whenever the evaporator sensor temperature (P02) is higher than the defrost termination temperature (P22), defrosting will be terminated. l Termination by (safety) time. The time set by parameter P28 is the maximum time a defrost cycle can last before it is terminated automatically. l Manual termination. With parameter P37 you can terminate a defrost cycle by pushing "ò" key. or While the actual temperature (P01) can be read on the display, a defrost cycle can be terminated by holding "ò" key for more than 2,5 seconds. l If the defrost limit sensor is interrupted, the defrost cycle will be stopped immediately. hysteresis Defrost Cycle setpoint cold 5 = Cyclic Heater or Airflow Defrost + DH Parameter (P15) displays the remaining time until defrost event completion. Cyclic Timer P24 defines the time up to the next defrost event, P28 defines the defrost duration. The cyclic timer starts running with power-up of the controller, the first (automatic) defrost events starts first after the first cycle time is run down. 1= refrigeration 4 = Hot Gas Defrost depending on Machine Runtime Same switching characteristic as Mode 2 Defrost Duration warm After the defrost cycle is terminated, cooling is delayed by parameter (P29). This prevents water drops from freezing on the evaporator coils. Parameter (P16) displays the remaining time before cooling is reinitiated after a defrost event. ON 2= heating activated OFF Defrost ends Defrost starts setpoint cold hysteresis de-activ. warm 2nd Setpoint Option The controller is equipped with an option to reduce energy consumption by establishing a second setpoint for after hours operation. Parameter (P04) allows you to select the second setpoint. Parameters (P05/P06) are used to establish the duration of the second setpoint, which is activated by an internal time switch. When this option is activated, the decimal point on the display will flash. Machine Runtime If the added power-on times of a connected machine (e.g. compressor) exceed the time defined by P24, a defrost cycle starts. (DH) Display Hold This function holds the last measured actual temperature value on the display during a defrost cycle. After the defrost cycle has been terminated, the 'Display Hold' ends if: Defrost Modes With P23 a defrost mode can be selected. l 1 = Cyclic Heater or Airflow Defrost Start of defrost cycle switches the defrost relay ON (i.e heater ON) and switches cooling OFF. l 2 = Cyclic Hot Gas Defrost Start of defrost cycle switches the defrost relay ON (i.e. bypass-valve open) and switches cooling relay ON (i.e. solenoid valve open). 3 = Heater or Airflow Defrost depending on Machine Runtime Same switching characteristic as Mode 1 measured Actual Value falls below of the Display Value by 2K or a fixed 15 minute timer times out. In Parameter (P23), modes 5 – 8, allow for the Display Hold feature. page 4 Technical Manual TARN x1370 Cold Storage Controllers Evaporator Fan Control The fan relay can also be used as an alarm relay, selectable by (P30) (see 'Temperature alarm'). Parameter (P13) allows you to select from 3 different fan operating modes. A temporal fan restart delay is active after a defrost cycle (P14). A thermostatic delay is always active, that means the fan starts only if the temperature measured with the evaporator (limit-) sensor is 3K below the fan trailing temperature (P12). If this function is not desired, (P12) can be set to its upper limit to make it ineffictive. During drain time (P29) the fan remains off. Fan Modes (P13) Practical conditions 1 = Fan runs if compressor output is on. After defrosting, the fan output is OFF until the programmed Fan Delay Time, (P14) is complete. . The fan is always run from the n/o contact of the fan relay. 2 = Fan runs continously, except during defrost and Fan Delay Time (P14) after defrost. Thermostatic fan delay: The fan stops if the temperature measured with the evaporator sensor exceeds P12. If this function is not desired, P12 can be set to its upper limit to make it ineffective. If you want to instate a thermostatic delay, select fan mode 2 and adjust setpoint P12. If you want to instate a thermostatic delay and airflow defrost, please realize a parallel connection of fan relay and defrost relay. 3 = Fan runs if the compressor output is on, and during defrost. The temporal fan delay must be set to "0". This mode can be used for airflow defrost, no thermostatic delay is valid. (P17) indicates the remaining time before the fan starts again. Switching Characteristic (Overview) Cooling delay Defrost event Fan delay ON Cooling Function (Relay K1) Defrost (Relay K2) OFF ON Temperature flow in the evaporator Fan Mode 1 OFF Fan Stop/Go setpoint Fan Stop/Go setp. ON on highest value OFF Fan Stop/Go setp. ON active OFF ON Fan Mode 2 Fan Stop/Go setp. on highest value OFF Fan Stop/Go setp. ON active OFF ON Fan Mode 3 Fan Stop/Go setp. on highest value OFF Fan Stop/Go setp. ON active OFF Technical Data Supply Voltage TARN 1370 .... 230V AC / 50-60 Hz TARN 21370 .. 115V AC / 60 Hz Power Consumption ................. appr. 4 VA Contact Rating cooling rel. ..... 10A res., 80A (20 msec) / 250V Contact Rating others ............. 5A res. / 250V Operating temperature ............. -10...+50°C (14...122°F) Storage temperature ................ -30...+70°C (-22...158°F) Relative Humidity ...................... max. 80% r.H., not condensing Display ..................................... LED,7-segment,red,character height 13mm (.51) Resolution ................................. 0,1°C / 0,2°F Accuracy ................................... typ. +/- 1K Temperature sensors ............... TF 201, TF 202 or TF 501 (Pt1000) Control-/Display Range with TF 201, 202 .......... -55...+105°C / -67...221°F with TF 501 .................. -110...+120°C / -166...248°F Data storage parameters .......... unlimited Relay indicators ........................ 3 mm, red Electrical connection ................ pluggable screw terminals 2,5mm (.1) Protection .................................. IP 54 from front Technical Manual TARN x1370 Cold Storage Controllers CONNECTION & SAFETY INFORMATIONS Please read before Start-up l Limit of Application: This product is not designed nor manufactured for use in equipment or systems that are intended to be used under such circumstances that may affect human life. For applications requiring extremely high reliability, please contact the manufacturer first page 5 Installation / Run-Up Sensor locations Control Sensor: In the airflow, at the suction side of the evaporator. Limit Sensor: In the lamella core or the contact pipe of the evaporator, at the place ice remains the longest time. lamellacore Evaporator(Limit-) sensor contact pipe l Electrical installation and putting into service must be done from authorized personnel. l Please note the local safety instructions ! l Before installation: Check the limits of the controller and your application. Before starting up we recommend you to read the instructions for use, since only by doing so you can avoid damage or malfunction and you will benefit all the advantages offered by this product. l During installation and wiring never work when the electricity is not cut-off ! l Never operate unit without housing. l Mounting the controller close to power relays is unfavourable in case of the electro-magnetic interference. l Before applying voltage to the controller, make sure that all wiring has been made in accordance with the wiring diagram in this manual. Check, if the supply voltage corresponds to the value printed on the type label. l Connect ‘PE’ terminals carefully to ground because otherwise operation of the internal noise filter is disabled. l Respect the environmental limits for temperature and humidity. Outside these limits malfunctions may occur. l Observe the maximum admitted current rate for the relays (see technical data). Compare with the peak start-up current of the controlled devices (valve, fan, compressor, heater..) l Sensor cables may be up to some hundred meters in length. Use shielded sensor cable only. Don’t install them in parallel with high-current cables to prevent inductive interference. A cross section of min. 0,5mm² is sufficient. Control Sensor Airflow Applications with Airflow-Defrost If this defrost method is used, there is no need for a defrost sensor in the evaporator, so the sensor can be disabled. If the correction parameter P20 is set to -10,1, the display shows "oFF" and the sensor is disabled. Correcting the parameter upward enables the sensor again. In this case, the controller terminates a defrost cycle only by time which is set with parameter P28. After power-up, display shows the temperature of the control sensor. After entering the access code (see chapter "unlock keys") you have to set the basic configuration of the controller to suit your application: l kind of temperature sensor and display value (°C/°F) (P21, Please note: special access code is '70'). All entered temperature setpoints will be set to default. l switching mode of cooling relay (parameter P10) l defrost method (P23) l evaporator fan mode (P13) l defrost cycle and duration (P24, P28) l sensor correction if necessary by P19/P20. The basic setup is now complete and you can edit the missing setpoints, delay times etc. l Shielding has to be connected to PE at the end near the controller l All used temperature sensors must be identical. Never use different types mixed. This will not work. See troubleshooting help on next page l TF-type sensors are moisture-proof but they are not designed for being immersed in water for a long period of time (not pressure-proof). In such a case, always use dipfittings. Application Example m a in s F 1 Typical parameter values for a cold storage with electric defrost F 2 P E L 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 e v a p o r a to r ( lim it) s e n s o r N c o n tro l s e n s o r C o ld S to r a g e P03 P07 P08 P09 P10 P11 P12 P13 P14 -20 -15 -25 2 1 2 -2 1 3 P22 P23 P24 P28 P29 P31 P32 P33 14 1 120 30 2 30 7 -35 page 6 Technical Manual TARN x1370 Cold Storage Controllers Troubleshooting 1. Which controller do you have ? Hold key 'P' for more than 2 seconds, display shows the type of the controller unit (138). 2. Do you hold the correct manual ? problem 3. With parameters P01 and P02 such as P15 to P18 (actual temperatures and running delays) you get a first survey about the unit's states. possible reason Temperature display: Actual display flashes with "-110" appr. "-166" Sensor type TF 501 with "°C" appr. "°F" selected, Short circuit in wiring or sensor itself Actual display flashes with "-55" appr. "-67" Sensor type TF 201 with "°C" appr. "°F" selected, Short circuit in wiring or sensor itself Actual display flashes with "120" appr. "248" Sensor type TF 501 with "°C" appr. "°F" selected, Wiring or sensor itself broken Actual display flashes with "105" appr. "221" Sensor type TF 501 with "°C" appr. "°F" selected, Wiring or sensor itself broken Temp. display does not match with actual temperature. Check if reference thermometer is placed at the same position as the sensor head. Then correct sensors. Programming: Setpoint cannot be adjusted High and low limit of the setpoint range are identical Other values cannot be programmed Enter Access Code. Display is running. All 3 positions change from 111 to 999 Unit works in selftest mode. Switch power OFF, switch power On again after 15 seconds. Please check sensor corrections now. You want to set all parameters to default Switch power OFF and wait 15 seconds. Hold P-key, switch power ON, unhand P-key. (The display shows first the software-version and then 'deF'. Now all parameter values are lost and are set to default. Temperature Control: Room temperature is shown too cold. Cooling is OFF although the room is too hot or: Cooling switches OFF too early. Sensor 1 and sensor 2 are interchanged, see also above 'Temp.display' Cooling is always running, although the room is cold enough and the indicator LED 1/Cooling is not ON. Wrong switching mode or N/O / N/C-contact interchanged (cool. relay). Note: If you change the switching mode, check or select the correct defrost mode ! Temperature too high, indicator LED '1/Cooling' is ON, but cooling does not switch ON. Wrong switching mode or N/O / N/C-contact interchanged (cool. relay). Note: If you change the switching mode, check or select the correct defrost mode ! Temperature too high, but cooling does not switch ON. Check, if a defrost cycle or the drain time is running. Cooling works, but fan is OFF. Check, if 'fan stop/go temperature' should work and the evaporator temperature is below the setpoint. Check if the fan delay is running You have selected fan mode 3, but the fan does not work during a defrost cycle. In this mode the fan delay must be set to '0'. If the evaporator sensor reaches the fan stop/go setpoint, the fan will be switched OFF during the defrost cycle. (appr. short defrost and fan relay with external wiring). You have selected fan mode 2, but fan switches ON and OFF during the cooling phases. Adjust fan stop/go temperature to the highest border You want to use a thermostatic fan delay, but the fan switches always OFF if cooling switches OFF. . Set fan mode to '2', adjust fan stop/go temperature. Defrost: Does not work. Check evaporator sensor position. Check defrost method, -times, -safety time and -termination temperature. Check if fan delay time is too long. Check if fan runs correctly in cooling cycles During a defrost cycle cooling starts. Defrost mode is set to 'hot gas'. Please set correctly. Note: If you change the switching mode, check or select the correct defrost mode ! Failure handling If the display flashes with 'minus'-LED: = sensor short circuit. without 'minus'-LED: = sensor interrupted Another possible opportunity is that the sensor is the wrong type or out of its specified range. Control sensor disturbance If the control sensor fails, all control functions will be disabled by de-activating the relay outputs. Display shows "oFF" if you select parameters P02 or P20 and the Limitation (Evap.) Sensor is disabled. Technical Manual TARN x1370 Cold Storage Controllers page 7 Dimensions / Wiring TARN 1370, TARN 21370 1/ 2/ 3/ 4/ 3 (.12) 230V AC 1 2 3 4 P ELREHA 6 7 ELREHA F1 F2 9 10 11 12 Snap in fixing frame from rear side. Kühlstellenregler Cold Storage Controller 8 76 (3.0) 5 70 (2.76) TAR 35 (1.38) 56 (2.2) 28 (1.1) 37 (1.46) Rückansicht mit Befestigungsrahmen rear view with mounting frame Front frame can be removed supplied gasket 75 (2.95) panel 70 (2.76) 28 (1.1) Accessories (please order separately or in a kit) : 10 9 8 7 6 5 4 3 2 mounting 1 cut-out 2x Temperature sensors TF 201 or TF 501 EG-Konformitätserklärung EG-Statement of Conformity Für das beschriebene Erzeugnis wird hiermit bestätigt, daß bei bestimmungsgemäßem Gebrauch die Anforderungen eingehalten werden, die in der Richtlinie des Rates zur Angleichung der Rechtsvorschriften der Mitgliedsstaaten über die elektromagnetische Verträglichkeit (89/336/EWG) und der Niederspannungsrichtlinie (73/23/EWG) sowie der Änderungsrichtlinien (93/68/EWG) festgelegt sind. Diese Erklärung gilt für alle Exemplare, auf die sich die vorliegende Bedienungsanleitung (die selbst Bestandteil dieser Erklärung ist) bezieht. We state the following: When operated in accordance with the technical manual, the criteria have been met that are outlined in the guidelines of the council for alignment of statutory orders of the member states on electro-magnetic consistency (89/336/EWG) and the Low Voltage Directive (73/23/ EWG) as amended by (93/68/EWG). This declaration is valid for those products covered by the technical manual which itself is part of the declaration. Zur Beurteilung des Erzeugnisses hinsichtlich elektromagnetischer Verträglichkeit und der Niederspannungsrichtlinie wurden jeweils die aktuellen Ausgaben der betreffenden Grund- und Fachgrundnormen herangezogen. To meet the requirements, the currently valid versions of the relevant standards have been used. Diese Erklärung wird verantwortlich vom Hersteller/Importeur This statement is made from the manufacturer / importer abgegeben durch: by: ELREHA Elektronische Regelungen GmbH D-68766 Hockenheim Werner Roemer, Technischer Leiter, Technical Director (Name / Anschrift / name / adress) Hockenheim.............21.10.2004....................................................... Ort/city Datum/date Unterschrift/sign This manual, which is part of the product, has been set up with care and our best knowledge, but mistakes are still possible. If you have any problems, difficulties or questions please don't hesitate asking our technical support. Technical details can be changed without notice, especially the software. Please note that the described functions are only valid for units containing the software with the version-number shown on page 1. Units with an other software number can work a little bit different. You will find this software number on the label of the unit too. set up 6.3.2005/tkd/jr checked: 21.3.2005 lhadidi approved: 21.3.2005/mv/sha file#: E155131 Shortform Manual for final customers Controller TARN x 1370 To change the Control Setpoint do the following : Press key 'P' .......... any parameter number appears Press keys 'ñ/ò' .... select parameter 'P03' Press "P" again ...... setpoint value appears Press keys 'ñ/ò' .... adjust setpoint value Press 'P' again ....... value is stored, back to parameter no. Control Model Number Display By holding the 'P' key for more than 2 seconds, Control Model Number will be displayed (137). If no key is pressed within four minutes, the access code will cancel and authorization access lock will be restored automatically.