XR75CX Case Display I/O Installation and Operation Manual
Contents
1. Use the UP and DOWN arrow keys to scroll through the available baud rate choices and select 19200 Press SET to save N NOTE The set value is stored even when the 4 time out expires and ends the procedure The E2 will override values set at the XR75CX Case Display device 7 2 HowtoAssigna MODBUS Address Follow steps 1 and 2 of Section 7 1 Setting the Baud Rate and Address to access the Ad re ss Setup Menu Select the Adr parameter Press SET to select Choose the address number using the arrow keys and press SET again to save Press SET and UP arrow keys to exit Setting the Baud Rate and Address Main Functions 7 8 Parameters This parameter table is a reference for changing parameters in the device but the E2 controller will override any changes made at the device 12 0 C to 12 0 C 21 F to 21 F 12 0 C to 12 0 C 21 F to 21 F 12 0 C to 12 0 C 21 F to 21 F 12 0 C to 12 0 C 21 F to 21 F Table 8 1 List of Parameters 8 XR75CX CD I amp O Manual 026 1217 Rev 0 08 NOV 2011 9 Digital Inputs The first digital input 18 20 is enabled with P3P n With P3P n and ilF 12F the second digital in put is disabled The free voltage digital inputs are programmable by the ilF and i2F parameters 9 1 ON OFF Function Switches the controller ON and OFF 9 2 Digital Inputs Polarity The digital input polarity depends on the 11P and 12P parameters2. Tu 14 11 Rx 4008 Unit 2 16 43 30 Use Chrl to Select CA Tabs Fails General Setup EEHER L SERU Alarms Hokices Serial COM Connection Hot Used GUNS Connection IUNeL HETWOHK DUERVIEN DOM Rand z 19 7 Khaud POOR 1 OOH Connection Ho Hoden Echelon PIMA Connection MINDS 1 CON Daud z 19 2 Kbaud E E CUMS Data Size E DIHS Parity GINA Stop Bits 1 Pi Connection Hot Word THIS GUMTHULLER Model RX 4 0 AA Unit 2 IP 18 21 1 212 237 hh Fe Rev 4 02408 FZ HEX TAB F3 EDIT 1 FA LUUR UP Fi PHEW TAB FS DARDEL Figure 16 4 Serial Communications Manager Screen 4 This screen will have a Connection field for all COM ports on the E2 Highlight the COM port connection field that will be used E2 Setup of Devices for the device and press LOOK UP From the list of network types select MOD BUS 5 Four fields will become visible underneath the COM port connection field which pertain to the way the device communicates e Baud Default setting is 19200 The baud rate set ting should be set to match the baud rate of the XR75CX CD device All devices connected to the same COM port should be set to the same baud rate e Data Size Leave this field at the default value 8 e Parity Leave this field at the default value None e Stop Bits Leave this field at the default value 1 6 Press gt to save changes and exit 16 3 2 Add and Connect the Device To enable communicati
3. e ilP or i2P CL the input is activated by closing the contact e ilP or i2P oP the input is activated by opening the contact ON OFF Function 10 Installation and Mounting BRACKET PUSH TO RELEASE Figure 10 1 Installation and Mounting of XR75CX CD The XR75CX CD controller should be mounted on a vertical panel in a 29 mm x 71 mm hole and se cured using the special bracket supplied The temperature range allowed for correct opera tion is 0 to 60 C Avoid places subject to strong vibra tions corrosive gases excessive dirt or humidity The same recommendations apply to probes Allow air to circulate through the cooling holes Digital Inputs 9 11 Electrical Connections The device s provided with screw terminal block to connect cables with a cross section up to 2 5 mm Before connecting cables verify that the power supply complies with the device s requirements Separate the probe cables from the power supply cables from the outputs and the power connections Do not exceed the maximum current allowed on each relay in case of heavier loads use a suitable external relay 11 1 Probe Connection The probes should be mounted with the bulb up wards to prevent damages due to casual liquid infiltra tion It is recommended the thermostat probe be placed away from air streams to measure the average room temperature correctly Place the defrost termi nation probe among the evaporator fa
4. ab o 1 2 8 00000 Figure 15 1 XR75CX CD to E2 MODBUS Network Wiring Probe Connection E2 MODBUS Network Wiring 13 16 ECT MODBUS Networking to E2s 16 1 COM Port Associations E2 Versions 3 xx and Below E2 PIB COM PORT ASSOCIATIONS E2 Enclosure Right Side E2 Modem Expansion COM Card Mounted _ L Above PIB Reba I I Serlal Device RS232 Port POWER INTERFACE BOARD PIB y Serial Device RS485 COM Port 2 Connectors Figure 16 1 Location of E2 Com Ports E2 versions 3 xx and Below Connecting a XR75CX CD controller to an E2 re quires the E2 to be version 3 02 or above Contact Re tail Solutions for upgrade information if the controller is a version before 3 02 An E2 has up to three COM ports that can be as signed for MODBUS communication COM2 an RS485 port on the E2 power interface board and COM4 and COM6 which are optional ports requiring expansion cards COM4 is recommended for MOD BUS connection of XR75CX CD units COM ports can only be used for one function n other words if COM2 is set up as the I O network you cannot connect MODBUS devices to COM2 En 14 XR75CX CD I amp O Manual sure your E2 is equipped with an RS485 COM Card P N 637 4890 and configured in E2 General Servic es 7 E Serial tab to enable COM4 or an E2 Expansion COM Card P N 637 4871 to enable COM6 Connect the MODBUS network cable to the three terminal connector on the COM port you wish t
5. the XR75CX CD shows the discharge air temperature In this mode you may view the values of all the other inputs and outputs by pressing the DOWN arrow but ton Each time the DOWN arrow button is pressed a message will be displayed for one second to indicate what input or output value will be shown followed by the current value 5 3 Defrost Mode When the case circuit is in defrost driven by the standard circuit the XR75CX CD may be pro grammed to display any three character message instead of the default temperature This feature ensures the higher case temperatures that occur dur ing a defrost cycle do not alarm customers The defrost message is displayed throughout the defrost cycle and for a programmed amount of time after wards Output Relay Control 5 4 E2 Alarms Case Temp Hi and Case Temp Lo When a XR75CX CD is associated with a Standard Circuit application in E2 a Case Temp Hi Limit Exceeded or Case Temp Lo Limit Exceeded alarm that occurs for the XR75CX CD s associated case will cause the main module and remote display s Alarm LED to turn ON indicating an active alarm Unlike XR75CX CD s temperature sensor alarms no alarm message will be shown on the display when case temperature alarms occur Operation 5 6 Front Panel Commands 6 2 Use of LEDS Each LED function is described in Table 6 2 CASE STATE Refrigeration se CASE STATE Defrost ate Flashing CASE STATE Dr
6. 026 1217 Rev 0 08 NOV 2011 XR75CX Case Display I O Installation and Operation Manual RSON EMERSOf 3 lt EMERSON Retail Solutions 3240 Town Point Drive NW Suite 100 Kennesaw GA 30144 USA Phone 770 425 2724 Fax 770 425 9319 TABLE OF CONTENTS E ANTRO DUCTON lt lt rc a ae a OAE T EEE EA E 1 E YGENBRA TL WA RNING Ss ee ee Eee Saale SSE Besseres ee 1 Dee MY VON EVN On 1 Dale GENERAL DESCRITO zie Eee een N else era seen 1 2 25 X REPOUPPOR OPTIONAL a A 2 23 AIR DEERING CODE A er re ee ee ee ee ee ee 2 3 CASE DISPLAY OUTROS a Se u a a le 3 A E2 SETUP cdas 4 4 1 CONFIGURING THE XR75CX CD THROUGH E2 cceascnseneeeeneenennensnnsnnnnennennnnnnnnnnnnennnnnnnnnsnnennnnnnnnnnnnnnnnnnnnsnnnnsnnsnennenn 4 A We CRC IT ASSOCER TION 2a ee esse e le eto dd A 5 OPERATION dida 5 SL OUTPUT RELAY CONTROL da asia 5 32 MODES OF OPERATION a dette 5 9 3 DELROST MODE ee a en ee e ee eee ae er 5 3 4 ELALARMS CASE TEMP HAND CASC TEMPLO Ar ee ee ee 3 6 FRONT PANEL COMMANDS 22 32 28 asien OSa ra a O Ea E i 6 Cle IKREISANDEUNCHONS aa oe at estas AT 6 9 22 USE OE E D D o E E EE ee S EE dd al eatin o A ee 6 T MAIN EUNCTIONS ica 7 Po SETTING Me BAOD RATE ANDADORES EHE ee e a eee 7 Les HOW TO ASSIGN AMODBUS ADDRESS ni ass nes tn nen ee 7 gt Me ME HS INYO EE GE WNC TIONG ee en nee A Selous 7 8 PARAMETER S anaa lends e tea ee a esse 8 9 DIGELLAT TNDUT Sa ss se ee e dl 9 IE ONE Be A A oR Eon Nee eye 9 92
7. 2 PCM TS DES O SRA een ernennen 9 10 INSTALLATION AND MOUNTING 4 ads 9 11 ELECTRICAL CONNECTIONS isos 10 ll PROBECONNE TON dd urn 10 12 HOW TO USE THE AO T KEY ai o ac ss 10 SS PECITEILCATION Seas 11 14 CONNECTIONS oa 12 15 E2 MODBUS NETWORK WIRING ccccccccccccccccccccscccccccccccccccccccccccscccccccccccccccccccccccceccccccccccccccccccccccccceces 13 16 ECT MODBUS NETWORKING TO EDS suscita 14 16 1 COM PORT ASSOCIATIONS E2 VERSIONS 3 XX AND BELOW ccceccscccceccececceccsccececcscescscescescesescescscescecescuccecs 14 16 2 COM PORT ASSOCIATIONS E2 VERSIONS 4 2 AND ABOVE cccsccscecceccsceccecccuccsccececescescsctscescscescescscuscucescuccecs 14 16 5 EISETUR OR DEVON a a aa a riesen 15 Td SSCL PAN CLV OTK LOS stress een 15 Table of Contents i 16 3 2 Add and Connect the Device 16 4 WIRING TYPES cccecececeeceeees 16 5 MODBUS TERMINATION BLOCKS ii e XR75CX CD I amp O Manual 026 1217 Rev 0 08 NOV 2011 1 Introduction 1 1 General Warning Please read the following safety precautions and warnings before using this manual CAUTION AN e This manual is part of the product and Should be kept near the device for easy and quick reference e The device should not be used for purposes differ ent from those described in this manual It cannot be used as a safety device Check the application limits before proceeding WARNINGS e Check that the supply vol
8. ELD WIRE Retail Solutions specifies Belden 8761 shielded CONNECT TOPIN 18 twisted pair cables for use as MODBUS wiring or en Belden 82761 and Belden 88761 for plenum instal E lations FROM OTHER gt o A TO LAST DEVICE For MODBUS network wiring of XR75CX CD controllers to E2 Belden 8641 P N 135 8641 is the recommended wire type to use If the recommended cable is not available in your area be sure the wiring meets or exceeds the follow ing specs 18 24 AWG Figure 16 9 MODBUS Termination Block P N 535 2711 Capacitance between 31 pF ft or less signal wires 9 45 m or less Capacitance between 59 pF ft or less signal and shield 17 98 m or less Maximum Length 4000 ft 18 to 22 AWG 1219 2 m 2500 ft 24 AWG 762 m Nominal Impedance 120W 50W 16 5 MODBUS Termination Blocks Because the XR75CX CD device has no on board means of termination use the MODBUS termination block P N 535 2711 for termination that can be wired to the end of the cable segment using the three pin connector Wire the two signal wires to the out side terminals and connect the shield to pin 18 of the device keeping the exposed shield wire length as short as possible 3 inches ideal maximum length Wiring Types ECT MODBUS Networking to E2s 17 The contents of this publication are presented for informational purposes only and they are not to be construed as warranties or guarantees express or implied regarding the
9. X 480 Mi Unit 2 IP 18 212 23f 306 FM bea d AR Fee STATUS FA L0HH1S 10H Figure 16 6 Network Summary Screen 6 By default each device in the network list has a board number of 0 To set the address and begin communication choose the device and press MEZ In the list of MODBUS devices choose the address number corresponding to the XR75CX CD address set up through the the following messages Online The device is communicating normally Offline The device 1s not communicating has not been commissioned is not functional or is not pow ered up Verify the device is powered up wired cor rectly and has the proper network address baud rate and parity Unknown The device is not communicating or has not been commissioned Verify the device is pow ered up wired correctly and has the proper network address baud rate and parity No Port No port is set up in the E2 Serial Config uration Manager to be a MODBUS port Wrong FW Rey This message is likely caused by the device having a firmware version older than the minimum revision required by E2 for communica tion Replace the device with a new one or a device that has the latest version of firmware on it Ras Unit 2 Hetunrk Summary ADUTSORY SUMMARY front display and press m to select it A Hane Type Hetwork Address Rey status Fails Alarms window will open where you can specify the Chae Disp ot Wea tase Bispla 2 ade ia etes address o
10. X CDs highlight the applica tion name whose number corresponds to the network address of the XR75CX CD you wish to set up 1 e XR75CX CD for XR75CX CD 1 4 From the XR75CX CD s status screen press SETUP 5 The parameters in these setup screens can be used to specify which inputs are present the case name or defrost override message sensor offsets and other important functions The E2 Online Help will explain the function of each parameter to access Online Help highlight the parameter you need assistance with and press 6 When all parameters are set properly press gt to return to the XR75CX CD s status screen 4 2 E2 Circuit Association The final step in setting up an E2 MODBUS network with XR75CX CDs is associating the Standard Cir cuit applications in the E2 with the XR75CX CDs they are attached to Refer to the E2 user manual for information on how to add and configure standard circuits Log into the E2 with level 4 access 2 Press CIRCUITS to view the circuit summary screen Highlight the circuit you wish to configure then press SETUP 4 In Setup screen C1 General set the following two parame ters e Num Case Sensrs Enter the number of XR75CX CDs on this circuit e Num Prod Sensrs If the XR75CX CDs on this circuit have sensors on input 2 enter the number of these sensors e Using Case Disp Set to Yes indicating the case tempera ture and other temps related to this ci
11. ction is not used on the XR75CX CD 12 XR75CX CD 180 Manual 026 1217 Rev 0 08 NOV 2011 15 E2 MODBUS Network Wiring e Connect the MODBUS Network to the RS485 Connector on the E2 PIB board Belden 8641 recommended e Note to wire the RS485 polarity at the E2 in the reverse of the XR75CX CD devices e Position the three termination jumpers to the UP terminated position to provide RS485 termination at the E2 e Do not connect the shield of the MODBUS network to the E2 PIB center terminal Instead use a 100 ohm 1 2 watt resistor to connect the MODBUS cable shield to earth ground e Ateach XR75CX CD device wire the MODBUS cable to the RS485 terminals and connect the MODBUS shield to the pin 18 terminal e Terminate the end of the MODBUS network at the last XR75CX CD device on the daisy chain with the MODBUS termination block P N 535 2711 or by connecting a 150 ohm resistor between the MODBUS terminals E2 Power Interface Board PIB Ns u Note that ifthe PIB board is E2 version 3 xx and below ee is E ver 4 02 and above TERHINATE NETMORK ds COM 2 4 or 6 integrated ern on the board no separate card RS485 termination can be used for RS485 wiring RS485 28 5 rs EARTH GROUND CONNECTION 100 Ohm Ys Watt BELDEN 9600 Baud Only wo MODBUS TERMINATION BLOCK 535 2711 150 ohm BELDEN Terminate last device only an REVERSE POLARITY OF ON RS 485 CABLE FR M E2 TO DEVICE Si Y XR75CX CD al dr N 4
12. f the controller If a network ID has rn musis a NEES nn already been selected its name will be shown De ene es ee next to the network ID in this list If the net work ID you are trying to assign has already been used you must set the address on this device to a different number that is not being hader Rk nen 00 US ed iri ane 12 227 206 FU Rev di AR Fa DELETE HERD Fe SEATS Fa LOMHISS 10H FS SETUP 14 14 11 HK an Unit 2 16 50 38 Hetwork Suneary UL AHH Figure 16 8 Network Summary Screen ADUISORY SUMMARY Hanr rule rear a 3 Falls nn E larna ea HODBUS 2 Devices EZ Unit 02 dj ler Holices oo neck CO nai XRISCK Cazelsp EL tD am Ver Urusei ARSENA E 2 Unused HAFSER OO 4 Aue Unused AHFSECA CO A A Unused Unused Unus 9 Unused Unused 11 0 Unused Unused a Unused pee THIS COMTROLLER te Model BX 480 Mn E am i Unit 2 u Unused n ee IP 10 212 257 34 muse F Rev 4 dd HETWORK OWERUIEW HOBDUS 1 MODUS 2 Eche Lon FS ENHEEL Figure 16 7 List of MODBUS Devices 7 Repeat Steps 5 and 6 until each device has a name and address 8 When finished press E to return to the Network Setup menu then press Hi Net work Summary Figure 16 6 Locate the devices you set up and look at each device s status in the Status field You will see one of 16 XR75CX CD 180 Manual 026 1217 Rev 0 08 NOV 2011 16 4 Wiring Types SHI
13. ip ly ALARM output ACTIVE ie CASE STATE Recovery Table 6 2 LEDs Figure 6 1 XR75CX CD Front Panel Once the XR75CX CD has been powered up for several minutes programming from the front panel is disabled Address and baud rate must be configured with the first minute of powering the device 6 1 Keys and Functions Table 6 1 shows the keys that are found on the front panel of the XR75CX CD controller and their corresponding functions Function Press to display target setpoint to select a pa rameter in programming mode or to confirm an operation Press the UP arrow to see the MAX tempera ture to browse the parameter codes in pro gramming mode or to increase the currently displayed temperature value Press the DOWN arrow to see the MIN tem perature to browse the parameter codes in programming mode or to decrease the cur rently displayed temperature value 1 Switches the device ON and OFF To enter programming mode u Keen Table 6 1 XR75CX CD Front Panel Keys and Functions 6 XR75CX CD I amp O Manual 026 1217 Rev 0 08 NOV 2011 7 Matin Functions 7 1 Setting the Baud Rate and Address To change the parameter s value follow these Steps Sad A BEBES oe E Enter the Programming mode by pressing the SET DOWN arrow keys for 3 seconds the C or F LED starts blinking Press the down arrow until adr displays Press the SET key Press the down arrow until bAu displays
14. lowing connectors must be used XREP RED LED 318 7210 XREP BLUE LED 318 7220 PartNumber AREPBLUELED 318 7220 XREP Cable 1 meter 318 7211 XREP Cable 1 meter 318 7211 nie Eo XREP t 7 na FEE XREP Cable 2 meter 318 7212 XREP Cable 3 met 318 7215 XREP Cable 3 meter 3187215 XREP Cable 3 meter 318 7215 XREP Mounting Plate 303 6037 Table 2 1 Wire Specifications XR75 Kit Case Display 110 VAC RED 818 6040 LED XR75 Kit Case Display 230 VAC RED 818 6041 LED XR75 Kit Case Display 110 VAC BLUE 818 6050 LED XR75 Kit Case Display 230 VAC BLUE 818 6051 LED XR75 Manual 026 1217 Table 2 2 Product Ordering Code 2 XR75CX CD 180 Manual 026 1217 Rev 0 08 NOV 2011 3 Case Display Outputs On Board Relay Outputs The XR75CX CD has 4 on board relays that may be used as satellite outputs by other E2 applications Wire the outputs to the two wire terminals on the right side of the control unit For loads greater than 3A use the outputs to energize external relays Output Resistive Rating 250VAC 0S1 120 240 4 9FLA 29 4 LRA 10A l and 7 N O N C 120 240 10A or land 8 0S3 120 240 5A 084 120 240 HP 10A Table 3 1 Output Ratings Ordering Codes Case Display Outputs 3 4 E2 Setup 4 1 Configuring the XR75CX CD Through E2 1 While logged in to the E2 with Level 4 access press gt CONFIGURED APPLICATIONS 2 Select 100 XR75CX CD 3 Ifthere are multiple XR75C
15. ns in the coldest place where most ice is formed and far from heaters or from the warmest place during defrost to prevent premature defrost termination 10 XR75CX CD I amp O Manual 12 Hot Key XR75CX CD are NOTE The Hot Key function is not used on 026 1217 Rev 0 08 NOV 2011 13 Specifications Case Front 32 mm x 74 mm Depth 60 mm Panel Mount 71 mm x 29 mm panel cut out Self extinguishing ABS IP 20 Protection Frontal IP65 Connections Screw terminal block lt 2 5 mm wiring Power Supply 230VAC 10 50 60Hz depending on the model 110VAC 10 50 60Hz Display 3 digits red or blue LED 14 2 mm high Up to four 4 NTC or PT1000 probes Inputs Digital free voltage contact 03 120 240 5A 250V AC 02 N O N C 120 240 10A 250V AC Relay Outputs 01 120 240 4 9FLA 29 4 LRA 10A 250VAC 04 120 240 Y HP 10A 250VAC Data Storing On the non volatile memory EEPROM Rated Impulsive Voltage 2500V Operating 0 to 55 C Temperatures Storage 30 to 85 C Relative Humidity 20 to 85 no condensing Resolution 0 1 C or 1 C or 1 F selectable Accuracy 0 7 C 1 digit ambient temperature 25 C Table 13 1 XR75CX CD Specifications Probe Connection Specifications 11 14 Connections 4 R485 _ A El Molde sl Suppl Hot Key Line 054 051 OS3 120V NL X Rep or 230V 50 60Hz Figure 14 1 XR75CX CD Connections www NOTES 120V or 230V depending on the model The Hot Key fun
16. o as sign as MODBUS Reverse polarity of on RS485 cable from E2 to the device 16 2 COM Port Associations E2 Versions 4 2 and Above E2 PIB COM PORT ASSOCIATIONS E2 Enclosure Right Side COM1 Serial Device RS232 Port u y m POWER INTERFACE BOARD PIB gt Serial Device RS485 COM Ports Nx COM2 COM6 COM4 Figure 16 2 Location of E2 COM Ports E2 PIB Board E2 version 4 2 and above An E2 has three COM ports that can be assigned for MODBUS communication COM2 COM ports can only be used for one function n other words if COM2 is set up as the I O network you cannot con nect MODBUS devices to COM2 Ensure BE EZ is configured in E2 General Services lt a gt BE Serial tab to enable COM4 or COM6 026 1217 Rev 0 08 NOV 2011 Connect the MODBUS network cable to the three terminal connector on the COM port you wish to as sign as MODBUS Reverse polarity of on RS485 cable from E2 to the device TERMINATED BIASED ALL 3 JUMPERS _ IN UP POSITION Ya is s ra ra ir rl E 2 E a Figure 16 3 MODBUS Networking 16 3 E2 Setup of Devices 16 3 1 Set Up Network Ports Before setting up a device the port on the E2 that has the MODBUS cable connected must be set up as a MODBUS port 1 Log in to the E2 with Level 4 access 2 Press Hong followed by Gener al Controller Info Ctrl 3 Press R5 to open the Serial tab of the General Controller Info setup screens
17. ons between E2 and the XR75CX CD units the devices must be added and addressed in E2 1 Log in to the E2 with Level 4 access 2 Press lt HH Connected I O Boards and Controllers 10 11 11 AX A400 Unit 2 16 55 31 Use Ctri X to Select CX Tabs ALARM fa this Unit ADUISORY SUMMARY Fails 2 2 CtriLink ACC z Ctritink CO NETWORK DUERUIEW CtrlLink ASC NODBUS 1 Discus 3 Echelon THIS CONTROLLER Model RHX 480 00 Unit 7 IP 10 212 237 38 F V Kev 4 0208 FS CANCEL Figure 16 5 Num Network Ctrls NetSetup Screen 3 Inthe Num Network Ctrls NetSetup screen under the ECT tab enter the number of de vices in the Quantity field Max shows the maximum number of devices allowed on the network 4 Press to return to the Network Setup menu then select WS Network Summary 5 Locate the units ou added to the network list Page age press EB and GW to scroll through the list If desired enter a new name for each device in the Name field ECT MODBUS Networking to E2s 15 Hane HX 400 URIE 2 Network Summary ABUISORY SUMMARY a Type Hetwork Address status Fails Alarms EF Unit LEITET 0 Ethernet i 208 This Controller Hoticts u CASE DISP Tb34 Case Displa z EL Cb EM tirillink CB HODDWS 1 Ho Port KEJSCA A KEILEN MODBUS 1 z Ho Fort HE IMHE UVEHUI EW Bir KATSOA MODAS P MODES 4 KRISE CO Mai Bee ee HOOD A PID LEE F1 DELETE HERD Echelon THIS CONTROLLER Model A
18. products or services described herein or their use or applicability Computer Process Controls Inc reserves the right to modify the designs or specifications of such products at any time without notice Computer Process Controls Inc does not assume responsibility for the selection use or maintenance of any product Responsibility for proper selection use and main tenance of any Computer Process Controls Inc product remains solely with the purchaser and end user 026 1217 08 NOV 2011 Emerson is a trademark of Emerson Electric Co 2011 Computer Process Controls Inc All rights reserved Printed in the USA
19. rcuit are being supplied by XR75CX CDs 4 XR75CX CD 180 Manual 5 Press MA screen will show a number of Case Display fields equal to the number entered in Num Case Sensrs step 4 For each field press LOOK UP and select the application name whose number corresponds to the network address number of the XR75CX CD you want to associate For example if you want to associate XR75CX CD 7 with this circuit select CL CD007 from the Look Up Table Once associated the Standard Circuit will automati cally receive discharge air termination temperature and product temperature either by sensor or calcula tion from the XR75CX CDs to move to Setup screen C2 Case Disp This 026 1217 Rev 0 08 NOV 2011 5 Operation 5 1 Output Relay Control The 4 on board relays on the XR75CX CD are con trolled by the associated XR75CX CD application in the E2 To control these relays you must connect the application s RELAY x COMMAND input where x is the relay number to the output of another applica tion in the E2 such as a schedule to control lighting Refer to the E2 Manual P N 026 1610 for informa tion on setting up input definitions 5 2 Modes of Operation Case Temperature Display Normal Mode When the case circuit is not in defrost and no alarms are active the XR75CX CD display shows a temper ature The user may select any of the four tempera ture inputs on the XR75CX CD as the default display temperature by default
20. tage is correct before connecting the device SAFETY PRECAUTIONS AND e Do not expose to water or moisture use the con troller only within the operating limits and avoid sud den temperature changes with high atmospheric humidity to prevent condensation from forming e Warning Disconnect all electrical connections before performing any kind of maintenance e Fit the probe where it is not accessible by the end user The device must not be opened e In case of failure or faulty operation send the device back to the distributor or to Retail Solutions see address with a detailed description of the fault o Verify the maximum current that can be applied to each relay see Section 13 Specifications e Ensure that the wires for probes loads and the power supply are separated and far enough from each other without crossing or intertwining e In case of applications in industrial environ ments the use of main filters our mod FT1 in paral lel with inductive loads could be useful General Warning 2 Overview 2 1 General Description The XR75CX Case Display 32 mm x 74 mm is a microprocessor based controller suitable for appli cations on medium or low temperature ventilated re frigeration units It has up to four 4 analog inputs discharge air temperature product temperature de frost temperature and coil out temperature four 4 re lay outputs and up to two 2 digital inputs The Case Display displa
21. ys these temperatures and values on an LED display Case Display may be net worked with an E2 RX controller software version 3 02 or higher to share sensor data with a Standard Circuit application that controls the case refrigeration Because the Case Display requires only a single network cable to communicate with an E2 cases equipped with XR75CX CDs require significantly less wiring and installation labor than traditional in stallations which typically require one cable per sen sor run to a centrally located group of input boards The XR75CX CD may control 4 external loads di rectly from its 4 onboard dry contact relay outputs The RS 485 serial output enables the unit to be connected to a network line that is MODBUS RTU compatible Two Modes of Operation The XR75CX CD can operate in Normal mode and Standalone failsafe mode When the case dis play is communicating normally with the E2 it is op erating in Normal mode If the communication between the case display and the E2 1s interrupted the case display will go into Standalone failsafe mode Introduction 1 2 2 X REP Output 2 3 Ordering Codes Optional Emerson Device Name Part Number XR75 Case Display 110 VAC RED LED 318 6040 U XR75 Case Display 230 VAC RED LED 318 6041 XR75 Case Display 110 VAC BLUE 318 6050 LED Figure 2 1 X REP Output XR75 Case Display 230 VAC BLUE 318 6051 To connect the X REP to the controller the fol LED
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