Emerson Process Management EC2-352 User's Manual
Contents
1. 1 4 PCN 864 925 16 09 2009 EC2 352 Display Case and Coldroom Controller Operating Instructions EMERSON Recommended Sensor Positions in Detail 2 ECN Pxx coil out temperature sensor Position directly after the evaporator on the common suction line 3 ECN Sxx air in temperature sensor Position in the middle of the cabinet as high as possible 4 ECN Sxx air out temperature sensor Position asymmetric closer to the expansion valve as high as possible 5 ECN Fxx fin temperature sensor Position on the evaporator asymmetric closer to the expansion valve Recommendations for mounting the pipe sensor Insure proper thermal contact by using a metallic pipe clamp or temperature resistant plastic straps Do not use standard plastic tie wraps as used for electrical wiring as they may become loose over time which could result in faulty temperature measurements and poor superheat control performance It is recommended to insulate the pipe temperature sensor with ARMAFLEX or equivalent The recommended position of the pipe sensors 1s between 9 and 3 o clock as shown in the picture EC3_ColdDat cdr 1 PTS5 07M suction pressure transmitter Position on the common suction line close to coil out temperature sensor 2 Both air temperature sensors should be mounted on spacers in the air duct so that there is airflow around Caution The sensor cables can be extended if necessary The connection must be protected agai2. 1 MOP on u4 Superheat mode 0 off 1 fixed superheat 2 adaptive superheat u7 Superheat setpoint max uo 20 Kf 1s wu Start openings 5 7S L380 T Display access 0 all disabled Caution access to controller only via the TCP IP Ethernet network possible 1 Keyboard enabled 2 IR remote control enabled 3 Keyboard and IR remote control Temporary data display and manual defrost enabled 4 Keyboard and IR remote control Temporary data display disabled Control setpoint with SEL key and manual defrost enabled HS iR access code ro fi o HS Password Po fet pet PCN 864 925 16 09 2009 amp EMERSON Formula for Mean Factors AQ r8 r9 Temperature calculation by the following formula Temperature Airin 1 Mean Factor 100 Airou Mean Factor 100 Examples Mean factor 0 Mean factor 100 Mean factor 50 Temperature Air in Temperature Air out Temperature Average between Air in and Air out Alarm Codes E0 Pressure sensor alarm EI Coil out sensor alarm E2 Air in sensor alarm This Alarm Code is inhibited if no air in sensor used AO r8 and r9 100 E3 Air out sensor alarm This Alarm Code is inhibited if no air out sensor used AO r8 and r9 0 and fin sensor installed d2 1 E4 Fin sensor alarm This Alarm Code is inhibited if no fin sensor used d2 0 Explanations for E0 E4 Alarms No sensor connected or the sensor and or the sensor cable
3. Cn Cleaning CL Alarms are cleared OF Emerson Electric GmbH amp Co OHG is not to be held responsible for erroneous literature regarding capacities dimensions applications etc stated herein Products specifications and data in this literature are subject to change without notice The information given herein is based on technical data and tests which EMERSON believes to be reliable and which are in compliance with technical EC2 352 Display Case and Coldroom Controller Operating Instructions Visualising Data WebPages A TCP IP Controller Readme file is available on the www emersonclimate eu website to provide detailed information about TCP IP Ethernet connectivity Please refer to this file if you need information beyond the contents of this instruction sheet The EC2 352 has a TCP IP Ethernet communication interface enabling the controller to be directly connected to a PC or network via the standard Ethernet port The EC2 352 controller has embedded WebPages to enable the user to easily visualise the parameter lists using real text labels No special software or hardware is required Connect the EC2 352 using the optional ECX N60 cable assembly to a network or hub that enables the controller to recetve a dynamic TCP IP address If a DHCP server is not available the controller can be connected to a computer using a crossover cable plugged directly into the Ethernet port In this case the TCP IP address of the computer must be ma
4. EC2 352 Display Case and Coldroom Controller Operating Instructions EMERSON Note This document contains short form instructions for experienced users Use last column in List of Parameters to document your individual settings More detailed information can be found in the User Manual The EC2 352 is a dedicated refrigeration controller with superheat and a driver for an Alco Controls Electric Control Valve EX2 In addition the EC2 352 controls air temperature and manages defrost and fan s Network EMERSON A PTS pressure transmitter 1 and an ECN Pxx pipe temperature sensor 2 measure saturated suction gas pressure and suction gas temperature at the evaporator outlet and feed the signals into the superheat control loop The superheat controller output modulates the opening of the EX2 pulse width modulated Electrical Control Valve 6 thus optimizing the refrigerant mass flow through the evaporator The ECN Sxx air temperature sensors 3 and 4 measure air in and out temperature of the evaporator and feed signals into the air temperature thermostat The ECN Fxx fin sensor 5 is used for defrost termination The controller has 3 relay outputs to control the compressor 7 defrost heater 9 and evaporator fan 8 Please consult the technical data right for input and output ratings In case of power loss due to the positive shut off characteristics of the EX2 Electrical Control Valves a liquid line solenoid valve
5. he option of the fans on off The cleaning mode should not be used in order to isolate the application for maintenance purposes 3 Fans only 4 Set the electronic control valve to 100 open 5 Displays the current TCP IP address 6 Set the controller s TCP IP address to 192 168 1 101 default value This change is only temporary A power down will reset the previous address e 7 Resets all parameters to the factory default setting The controller will indicate oF during the reset and the valve will close Display of Data The data to be permanently shown on the display can be selected by the user parameter 1 In case of an alarm the alarm code is displayed alternately with the selected data The user can inhibit the alarm code It is possible to temporarily display these values This is a useful feature when initially setting up the system without the aid of the WebPages Press the SEL button to scroll through all possible displayable data The display will show for one second the numerical identifier of the data see 1 parameter and then the selected data After two minutes the display will return to the by parameter 1 selected data This action is only valid when parameter H2 3 Logical status of compressor relay IR LED Ethernet activity LED only active when service pin is pressed Logical status of fan relay Logical status of defrost heater relay Alarm condition 2 4 PCN 864 925 16 09 2009 EC2 352 Di
6. hed on again at dH dd d4 Defrost at startup O no 1 yes 0 1 oO d5 Delay power up defrost 0 180 min 0 d6 Pump down delay 0 180 sec 0 Compressor will run during pump down delay while valve is closed d7 Draindelay LS min 2 f ha Injection delay 180 Valve is open during injection delay while compressor is not running Demand defrost mode 0 off 1 on 2 on together with timed defrost dd Pulsed defrost differential l 20 K 2 dH Pulsed defrost setpoint 40 dt aC 5 dt Defrost termination temperature 40 90 c 8 dP Max defrost duration 0 180 min 30 dI Defrost interval 0 192 h 8 du Start up delay after synch O 180 min 30 F FAN PARAMETERS F1 Fan startup by 0 on 1 delayed by time Fd error on temperature 2 by temperature Ft error on time 3 first whatever comes first time or temperature no alarm 4 last time and temperature must come no alarm F2 During no cooling 0 2 0 min 0 Fd Fan delay after defrost 0 Ft On temp after etos 40 a e o C COMPRESSOR PARAMETERS CO Delay first start after powerup O 15 min of C1 Cycletime S min OT C2 Min stoptime OS min OT C3 Min run time 0 15 min 0 u SUPERHEAT PARAMETERS u0 Refrigerant 0 R22 1 R134a 2 R507 3 R404A 4 R407C 5 R410A 6 R124 7 R744 ul Correction glide dp Glide positive values i Pressure drop negative values u2 MOP control m 0 MOP off
7. is broken or short circuited Er Data error display out of range Data send to the display is out of range AH High temperature alarm AL Low temperature alarm AE Thermostat emergency operation Air sensor failure system is in continuous cooling mode AF Valve Status Valve closed due to compressor safety loop active Ao Superheat emergency operation Sensor s failure Ar No refrigerant flow detected No refrigerant flow was detected Au Valve open 100 for more than 10 minutes dt Forced defrost termination time or temperature Ft Forced fan startup time or temperature Messages No data to display The display will show an at node start up and when no data is send to the display In Reset to default values activated The display will show an In when the factory default configuration data set is initialized Id Wink request received The display will show a flashing Id when the wink request was received The flashing Id will be shown on the display until the service button will be pressed or a 30 min delay timer will expire or a second wink request is received This function is action only when using SNMP protocol Node is offline The node is offline and no application is running This is the result of a network management command and will happen for example during node installation dS Defrost standby dP Pump down dF Defrost cycle dd Defrost drain delay dI Defrost injection delay du Defrost start up delay
8. is not needed to prevent flooding of the compressor A Safety instructions Read installation instructions thoroughly Failure to comply can result in device failure system damage or personal injury The product is intended for use by persons having the appropriate knowledge and skills Ensure electrical ratings per technical data are not exceeded e Disconnect all voltages from system before installation Keep temperatures within nominal limits e Comply with local electrical regulations when wiring EC2 352 65117 _EN_ R05 doc Replacement for Rev 04 Technical Data EC2 Series Controller Power supply 24VAC 10 50 60Hz Class II Power a 20VA max including EX2 Communication TCP IP Ethernet 10MBit s Plug in connector size Removable screw terminals wire size 0 14 1 5 mm Temperature storage 20 65 C operating 0 60 C 0 80 r h non condensing IP65 front protection with gasket 24VDC 4 20mA SPDT contacts AgCdO Inductive AC15 250V 2A Resistive AC1 250V 8A 12A total return current Triac output for EX2 Electrical Control Valve Coil ASC 24V only Mounting The EC2 352 can be mounted in panels with a 71 x 29 mm cutout See dimensional drawing below for ll x f space requirements including rear connectors e Push controller into panel cutout 1 Make sure that mounting lugs are flush with outside of controller housing Insert allen key into front panel holes and tur
9. mported into a standard spreadsheet program such as Excel Refer to the TCP IP Controller Readme file for a complete description of the features available for the TCP IP series of controllers knowledge of today It is intended only for use by persons having the appropriate technical knowledge and skills at their own discretion and risk Since conditions of use are outside of EMERSON s control we cannot assume any liability for results obtained or damages occurred due to improper application This document replaces all former versions Emerson Electric GmbH amp Co OHG Postfach 1251 HeerstraBe 111 D 71332 Waiblingen Germany Phone 49 0 7151 509 0 Fax 49 0 7151 509 200 www emersonclimate eu EC2 352 65117 _EN_ R05 doc Replacement for Rev 04 4 4 PCN 864925 16 09 2009
10. n m M clockwise Mounting lugs will turn and gradually an me E 2 move towards panel 2 Be ee Turn allen key until mounting lug barely touches panel Then move other mounting lug to the same position 3 Tighten both sides very carefully until controller is secured Do not over tighten as mounting lugs will E break easily ___ Te EMERSON Cutout 71 x 29 mm Electrical Installation Refer to the electrical wiring diagram below for electrical connections A copy of this diagram is labeled on the controller Use connection wires cables suitable for 90 C operation EN 60730 1 Ss EMERSON Climate Technologies EC2 Series Therm EXV 31 Suction Press S2 Coil out Temp S3 Air in Temp 54 Air out Temp 55 Defrost Temp S1 S2 S3 S4 S5 RX TX EC2 analog inputs are for dedicated sensors only and should not be connected to any other devices Connecting any EC2 inputs to mains voltage will permanently damage the EC2 Important Keep controller and sensor wiring well separated from mains wiring Minimum recommended distance 30mm Warning Use a class II category transformer for 24VAC power supply EN 60742 Do not ground the 24VAC lines We recommend to use one transformer per EC2 controller and to use separate transformers for 3 party controllers to avoid possible interference or grounding problems in the power supply Connecting any EC2 inputs to mains voltage will permanently damage the EC2
11. nst water and dust The evaporator outlet temperature sensor should be mounted on the common suction header of the evaporator A calibration correction can be made using the parameter ul see procedure below Setup and Parameter Modification Using the Keypad For convenience an infrared receiver for the optional IR remote control unit is build in enabling quick and easy modification of the system parameters when a computer interface is not available Alternatively the parameters can be accessed via the 4 button keypad The configuration parameters are protected by a numerical password The default password is 12 To select the parameter configuration e Press the PRG button for more than 5 seconds a flashing 0 is displayed e Press 4 or be until 12 is displayed password e Press SEL to confirm password The first modifiable parameter code is displayed 1 To modify parameters see Parameters modification below Parameter Modification Procedure e Press a or be to show the code of the parameter that has to be changed e Press SEL to display the selected parameter value e Press EJ or FI to increase or decrease the value e Press SEL to temporarily confirm the new value and ia its code e Repeat the procedure from the beginning press 4 or HI to show To exit and save the new settings e Press PRG to confirm the new values and exit the parameters modification procedure To exit without modifying any pa
12. nually modified to be compatible with the default address of the controller Refer to the TCP IP Controller Readme file for more details Open the Internet browser program on the computer and enter the default TCP IP address of the controller into the address line of the Internet browser 192 168 1 101 or the dynamic address from the DHCP server Refer to the TCP IP Controller Readme file if a specific port is required After a few moments the default monitoring page should be displayed If the browser does not open the default page or display active data the user should check the Internet browser Option configuration Refer to the TCP IP Controller Readme file Analg Detost Fan c erso Thermostat Evaporator Dispi TORAP Moreton Alarms Serice sensor 7 eee P po confguration confguration configuration configuration configuration comfguration Conhgurstion configuration Monitor Cipi states kout states General Aleem i Compressor seater a Fan Thermostat contro er Detrost cortroter Superhest controter Control Terperetee DEN Cetrost Temperature ru Col hn Temperate ET lt Aa in Temperature A s C Detrost Duration kas hms FPresoze fae tog Irog stab Ar Of levpersize i IM oh eae Cot Od Temperate ma lt Cul h Terperetre rT Pump down Superheal x H Defrost Cut Out Temperature poe C Drain dowh Superheat Setpoint im k Alarre ergas ttura EN kioskon dely Vaive Opaning po ES Syrebrorizaton wet Evaporator stat
13. oring off no temp alarms generated 1 cooling deadband control cutin set point difference cut out set point 2 cooling modulating thermostat cutin set point cut out set point difference 2 3 heating deadband control cutin set point difference cut out set point 4 on external control using nvi Valve via SNMP Air in and air out sensor monitoring off Temp alarms will be generated 6 7 d St Setpoint day d DEFROST PARAMETERS Defrost mode 0 natural defrost defrost heater not activated pulsed defrost not possible 1 forced defrost defrost heater activated pulsed defrost possible 2 forced defrost defrost heater activated pulsed defrost possible defrost termination using nviStartUp via SNMP Termination by 0 termination by temperature termination by time will generate an alarm Sismieye tS 1 termination by time termination by temperature will generate an alarm 2 first what ever comes first time or temperature no alarm 3 last by time and temperature no alarm Defrost termination sensor 0 Dedicated defrost sensor must be installed 1 Air out sensor used for defrost termination EC2 352 65117 _EN_ R05 doc Replacement for Rev 04 d3 Pulsed defrost 0 l 0 0 off no pulsed defrost heaters switched off at defrost termination temperature dt or max time dP whatever is selected 1 on pulsed defrost dd and dH in use heaters are switched off at dH and switc
14. rameter e Do not press any button for at least 60 seconds TIME OUT e Press ESC on IR remote control EC2 352 65117 _EN_ R05 doc Replacement for Rev 04 Defrost Activation A defrost cycle can be activated locally from the keypad e Press the he button for more than 5 seconds a flashing 0 is displayed e Press 4 or be until 12 is displayed password e Press SEL to confirm password The defrost cycle is activated Special Functions The Special Functions can be activated by e Press EJ and IM together for more than 5 seconds a flashing 0 is displayed e Press J or M until the password is displayed default 12 If password was changed select the new password e Press SEL to confirm password a 0 is displayed and the Special Function mode is activated e Press a or he to select the function The number of special functions is dynamic and controller dependent See list below e Press SEL to activate the function without leaving the special function mode e Press PRG to activate the function and leave the special function mode Most of the Special Functions work in a toggle mode the first call activates the function and the second call deactivates the function The indication of the function can only be displayed after exiting the special function mode e 0 Display test function e 1 Clear alarm messages e 2 Cleaning mode The cleaning mode is effectively a manual defrost with t
15. splay Case and Coldroom Controller EMERSON Operating Instructions List Of Parameters DISPLAY PARAMETERS 1 Value to show 0 9 0 0 Thermostat control temperature with Temp alignment C 1 Air in temperature C 2 Air out temperature C 3 Alarm temperature C 4 Defrost termination temperature C 5 Coil in temperature C calculated from the pressure 6 Coil out temperature C 7 Calculated superheat K 8 Valve opening in 9 Displays defrost status 2 Alarm suppression O off l on 0 5_ Temperature Unit 0 C 1 F 0 Decimal point O yes l no 0 7 Display during defrost 0 0 dF defrost mode l 0 1 o e o 2 0 1 dF defrost termination temp 2 dF control temperature C Temperature alignment for 1 0_ 20 20 K F 0 0 A ALARM PARAMETERS AO Mean factor alarm temperature 0 100 100 Al Low temp alarm delay 0 180 min 5 A2 High temp alarm delay 0O 180 min 5f A3 Alarm delay after defrost 0 180 min 0 AH High temp alarm limit AL 70 C K 40 AL Low temp alarm tima 95 AR C K 50 Alarm limit type 0 l 0 0 absolute temperatures C 1 relative temperatures K to setpoint r THERMOSTAT PARAMETERS ri Minsetpoint 50 2 c SOT 12 Setpointmax rl 60 PC j4 Day night control O off l on 0 1 Jil r4 Thermostat mode 0 4 i 0 off no thermostat function continues cooling air in sensor monit
16. ue Cyce Rate o 1A Commotion on Thermostat se Cook Thermostat on Moduating Costing Oetrost Adaptive operation Mocaeting Pufsrd defroct Mpi operation Dersi defrost MoT aeran System fare Door open dmim Cortrusut operation EMERSON The Monitoring and Alarm WebPages are read only and therefore it is not necessary to enter a username or password A username and password will be requested upon the initial request to any of the other WebPages The factory default settings are Username EmersonID Password 12 The default settings may be modified in the Display configuration page Press the tabs at the top of the Monitoring page with a left click of the mouse button to enter the respective Webpage The parameters will be visualised in real text together with the program code as defined in the parameter list below After the parameters have been modified the complete list of settings can be saved to the memory of the computer and used later to upload into another controller This can save a considerable amount of time when using multiple controllers and over a period of time a library can be created containing the parameter lists for equipment for different applications It is also possible to display live graphical data from the controller In addition a permanent 30 days log file containing the control temperature at 15 minutes intervals is stored in the non volatile memory to be later transferred using FTP to the computer The log file can be i
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