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ii • XR75CX I&O Manual

026-1210 Rev 4

2F=PAL) ................................................................................................................................... 13

) .................................................................................................................... 13

EF)............................................................................................................................ 13

2F=AUS) ............................................................................................................. 13

) .................................................................... 13

2F=ES) ......................................................................................................................................... 13

8.9. ON - OFF F

F)................................................................................................................................ 13

....................................................................................................................................... 14

9 RS485 SERIAL LINE (FOR MONITORING SYSTEMS)...................................................................................... 15

10 X-REP OUTPUT (OPTIONAL) ............................................................................................................................... 15

11 INSTALLATION AND MOUNTING ..................................................................................................................... 16

12 ELECTRICAL CONNECTIONS............................................................................................................................. 16

................................................................................................................................................. 16

13 HOW TO USE THE HOT KEY ............................................................................................................................... 17

) ............................................................................... 17

)......................................................................... 17

14 ALARM SIGNALS ................................................................................................................................................... 18

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15 SPECIFICATIONS.................................................................................................................................................... 19

16 CONNECTIONS ........................................................................................................................................................ 21

17 E2 MODBUS NETWORK WIRING ....................................................................................................................... 22

18 ECT MODBUS NETWORKING TO E2S............................................................................................................... 23

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18.3.1. Set Up Network Ports........................................................................................................................................ 24
18.3.2. Add and Connect the Device ............................................................................................................................. 24

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19 DEFAULT SETTING VALUES .............................................................................................................................. 27

APPENDIX A - ALTERNATE MODBUS COM WIRING METHOD FOR E2, XR, XM, AND XEV DEVICES 31

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Содержание Dixell XR75CX Series

Страница 1: ...XR75CX Digital Controller for Medium Low Temperature Refrigeration Applications Installation and Operation Manual 026 1210 Rev 4 ...

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Страница 3: ...Emerson 1065 Big Shanty Road NW Suite 100 Kennesaw GA 30144 USA 770 425 2724 www emerson com ...

Страница 4: ......

Страница 5: ... COMMANDS 4 4 1 KEYS AND FUNCTIONS 4 4 2 USE OF LEDS 4 5 MAX AND MIN TEMPERATURE MEMORIZATION 5 5 1 HOW TO SEE THE MIN TEMPERATURE 5 5 2 HOW TO SEE THE MAX TEMPERATURE 5 5 3 HOW TO RESET THE MAX AND MIN TEMPERATURE RECORDED 5 6 MAIN FUNCTIONS 6 6 1 HOW TO SEE THE SETPOINT 6 6 2 HOW TO CHANGE THE SETPOINT 6 6 3 HOW TO START A MANUAL DEFROST 6 6 4 HOW TO CHANGE A PARAMETER VALUE 6 6 5 THE HIDDEN MEN...

Страница 6: ...THE HOT KEY 17 13 1 HOW TO PROGRAM A HOT KEY FROM THE DEVICE UPLOAD 17 13 2 HOW TO PROGRAM THE DEVICE USING A HOT KEY DOWNLOAD 17 14 ALARM SIGNALS 18 14 1 SILENCING BUZZER ALARM RELAY OUTPUT 18 14 2 ALARM RECOVERY 18 14 3 OTHER MESSAGES 18 15 SPECIFICATIONS 19 16 CONNECTIONS 21 17 E2 MODBUS NETWORK WIRING 22 18 ECT MODBUS NETWORKING TO E2S 23 18 1 COM PORT ASSOCIATIONS E2 VERSIONS 3 XX AND BELOW 2...

Страница 7: ... be easily programmed through the keyboard 2 2 Ordering Code CAUTION This manual is part of the product and should be kept near the device for easy and quick reference The device should not be used for purposes different from those described in this manual It cannot be used as a safety device Check the application limits before proceeding SAFETY PRECAUTIONS AND WARNINGS Check that the supply volta...

Страница 8: ...owing for drip time set by means of the Fnd parameter FnC C_y fans will switch ON and OFF with the compressor and run during defrost FnC O_y fans will run continuously during defrost also An additional parameter called FSt provides the setting of temperature detected by the evaporator probe above which the fans are always OFF This is used to make sure that air is circulated only if this temperatur...

Страница 9: ...nF When oA2 onF the relay is activated when the controller is turned ON and de activated when the controller is turned OFF 3 4 4 Neutral Zone Regulation When oA2 db the relay 1 2 can control a heater element to perform a neutral zone action oA2 cut in SET HY oA2 cut out SET 3 4 5 Alarm Relay When oA2 ALr the relay 1 2 operates as an alarm relay It is activated every time an alarm occurs Its status...

Страница 10: ...ress the DOWN arrow key to see the MIN temperature to browse the parameter codes in programming mode or to decrease the displayed temperature value Switches the device ON and OFF if onF oFF Switches the light ON and OFF if oA1 Lig Table 4 1 XR75CX Front Panel Keys and Functions Locks Unlocks the keyboard To enter programming mode Returns to room temperature display LED Mode Function ON Compressor ...

Страница 11: ...stored 5 2 How to See the MAX Temperature 1 Press and release the UP button 2 The Hi message will be displayed followed by the maximum temperature recorded 3 By pressing the UP button again or by waiting 5 seconds the normal display will be restored 5 3 How to Reset the Max and Min Temperature Recorded 1 Press and hold the SET button for more than 3 seconds while the max or min temperature is disp...

Страница 12: ...ts value 3 Use the UP or DOWN buttons to change its value 4 Press SET to store the new value and move to the next parameter To exit Press the SET UP buttons or wait 15 seconds without pressing a key 6 5 The Hidden Menu The hidden menu includes all the parameters of the controller 6 5 1 How to Enter the Hidden Menu 1 Enter the Programming mode by pressing the SET DOWN buttons for three 3 seconds th...

Страница 13: ...WN buttons pressed for more than 3 seconds 2 The PoF message will be displayed and the keyboard will be locked At this point it will be possible to see the setpoint or the MAX or Min temperature stored only 3 If a button is pressed for more than 3 seconds the PoF message will be displayed 6 8 To Unlock the Keyboard Press and hold the UP and DOWN buttons for more than 3 seconds until the Pon messag...

Страница 14: ... to 12 0 C 21 to 21 F Allows to adjust possible offset of the fourth probe odS Outputs activation delay at start up 0 to 255min This function is enabled at the initial start up of the instrument and inhibits any output activation for the period of time set in the parameter AC Anti short cycle delay 0 to 50min Minimum interval between the compressor stop and the following restart rtr Percentage of ...

Страница 15: ...be P1 thermostat probe P2 evaporator probe P3 configurable probe P4 Probe on Hot Key plug dtE Defrost termination temperature 50 to 50 C 58 to 122 F enabled only when EdF Pb Sets the temperature measured by the evaporator probe which causes the end of defrost idF Interval between defrost cycles 0 to 120hours Determines the interval of time between two defrost cycles MdF Maximum length for defrost ...

Страница 16: ...gement nP P1 P2 P3 P4 nP no probe P1 thermostat probe P2 evaporator probe P3 configurable probe P4 Probe on Hot Key plug AUXILIARY THERMOSTAT CONFIGURATION terms 1 2 oA2 AUS ACH Kind of regulation for auxiliary relay Ht CL Ht heating CL cooling SAA Set Point for auxiliary relay 50 to 110 0 C 58 to 230 F It defines the room temperature setpoint to switch auxiliary relay SHY Differential for auxilia...

Страница 17: ... to 45 F Ad2 Condenser temperature alarm delay 0 to 255 min Time interval between the detection of the condenser alarm condition and alarm signaling dA2 Condenser temperature alarm exclusion at start up 0 0 to 24h00min res 10min bLL Compressor OFF with low temperature alarm of condenser n Y n no compressor keeps on working Y yes compressor is switched OFF until the alarm is present in any case reg...

Страница 18: ...id interval before signaling an alarm event i2F PAL If the nPS activation during did time is reached switch OFF and ON the instrument to restart normal regulation odc Fan compressor status when door open no FAn CPr F_C no normal FAn fan OFF CPr compressor OFF F_C fan and compressor OFF rrd Outputs restart after doA alarm n Y n outputs not affected by the doA alarm Y outputs restart with the doA al...

Страница 19: ...nding relay output status through the odc parameter no normal any change Fan Fan OFF CPr Compressor OFF F_C Compressor and fan OFF Since the door is opened after the delay time set through parameter doA the door alarm is enabled the display shows the message dA and the regulation restarts is rtr Y The alarm stops as soon as the external digital input is disabled again With the door open the high a...

Страница 20: ...onnect to a monitoring system MODBUS RTU compatible such as the X WEB500 3000 300 10 X REP Output Optional Optionally an X REP can be connected to the controller through the dedicated connector To connect the X REP to the controller the following connectors must be used CAB 51F 1m CAB 52F 2m CAB 55F 5m Figure 10 1 X REP Output ...

Страница 21: ... 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 12 1 Probe Connection The probes should be mounted with the bulb upwards to prevent damages due to casual liquid i...

Страница 22: ...cle and then turn the Controller ON by pressing the on off button again for 5 seconds The normal temperature value will display to indicate the controller is ON 3 Automatically the parameter list of the Hot Key is downloaded into the controller memory the doL message will display followed by End at the end of the data transfer phase if the controller is programmed correctly 4 After 10 seconds the ...

Страница 23: ...er Messages Message Cause Outputs P1 Room probe failure Compressor output acc to par Con and CoF P2 Evaporator probe failure Defrost end is timed P3 Third probe failure Outputs unchanged P4 Fourth probe failure Outputs unchanged HA Maximum temperature alarm Outputs unchanged LA Minimum temperature alarm Outputs unchanged HA2 Condenser high temperature It depends on the AC2 parameter LA2 Condenser ...

Страница 24: ...3 HP 6k cycles 250 V 50 60 Hz 1 2 HP 30k cycles Terminals 4 and 1 Compressor 120 V 50 60 Hz 1 4 HP 30k cycles 240 V 50 60 Hz 1 2 HP 30k cycles Terminals 3 and 1 AUX Light 120 240 V 50 60 Hz 5 A General Purpose 6k cycles Terminals 2 and 1 Defrost N O 120 240 V 50 60 Hz 10 A Resistive 30k cycles 120 240 V 50 60 Hz C300 Pilot Duty 30k cycles Terminals 7 and 1 Defrost N C 120 240 V 50 60 Hz 10 A Resis...

Страница 25: ...5 no condensing Measuring and Regulation Range NTC EU probe 10k 1 3435 40 to 110 C 40 to 230 F NTC US probe xxk y 40 to 110 C 40 to 230 F Resolution 0 1 C or 1 C or 1 F selectable Accuracy ambient temperature 25 C 0 7 C 1 digit Table 15 1 XR75CX Technical Data ...

Страница 26: ...20 XR75CX I O Manual 026 1210 Rev 4 16 Connections Figure 16 1 XR75CX Connections ...

Страница 27: ...wire the MODBUS cable to the RS485 terminals and connect the MODBUS shield to the pin 18 terminal Terminate the end of the MODBUS network at the last XR75CX 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 Refer to Appendix A Alternate MODBUS COM Wiring Method for E2 XR XM and XEV Devices Technical Bulletin P ...

Страница 28: ...the MODBUS network cable to the three terminal connector on the COM port you wish to assign as MODBUS Reverse polarity of on RS485 cable from E2 to the device 18 2 COM Port Associations E2 Versions 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 in other words if COM2 is set up Figure 18 1 Location of E2 COM Por...

Страница 29: ...etting is 19 2k The baud rate setting should be set to match the baud rate of the XR75CX device 9600 All devices connected to the same COM port should be set to the same baud rate Data Size Leave this field at the default value 8 Parity Leave this field at the default value None Stop Bits Leave this field at the default value 1 6 Press to save changes and exit 18 3 2 Add and Connect the Device To ...

Страница 30: ...line The device is communicating normally Offline The device is not communicating has not been commissioned is not functional or is not powered up Verify the device is powered up wired correctly 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 powered up wired correctly and has the proper network addre...

Страница 31: ...two signal wires to the outside 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 Shielded Yes Conductor Type Twisted Pair Gauge 18 24 AWG Capacitance between signal wires 31 pF ft or less 9 45 m or less Capacitance between signal and shield 59 pF ft or less 17 98 m or less Maximum Length 4000 ft 18 to...

Страница 32: ...21 to 21 F 0 0 C 0 F Pr2 odS Outputs delay at start up 0 to 255 min 0 Pr2 AC Anti short cycle delay 0 to 50 min 1 Pr1 rtr P1 P2 percentage for regulation 0 to 100 100 P1 0 P2 100 Pr2 CCt Continuous cycle duration 0 0 to 24h 00min res 10min 0 0 Pr2 CCS Setpoint for continuous cycle 50 to 110 0 C 58 to 230 F 5 C 23 F Pr2 Con Compressor ON time with faulty probe 0 to 255 min 15 Pr2 CoF Compressor OFF...

Страница 33: ...Pr2 FAP Probe selection for fan management nP P1 P2 P3 P4 P2 Pr2 ACH Kind of action for auxiliary relay CL Ht CL Pr2 SAA Setpoint for auxiliary relay 50 to 110 C 58 to 230 F 0 0 C 32 F Pr2 SHY Differential for auxiliary relay 0 1 to 25 5 C 1 to 45 F 2 0 C 2 F Pr2 ArP Probe selection for auxiliary relay nP P1 P2 P3 P4 nP Pr2 Sdd Auxiliary relay operating during defrost n Y n Pr2 ALP Alarm probe sel...

Страница 34: ... CL CL Pr2 i1P Digital input polarity 18 20 oP opening CL closing CL Pr1 i1F Digital input 1 configuration 18 20 dor dEF dor Pr1 i2P Digital input polarity 18 19 oP opening CL closing CL Pr2 i2F Digital input configuration 18 19 EAL bAL PAL dor dEF ES AUS Htr FAn HdF onF EAL Pr2 did Digital input alarm delay 18 20 0 to 255 min 15 Pr1 doA Door open alarm delay 0 to 255 min 15 Pr1 NPS Number of acti...

Страница 35: ...alues 29 dP3 Third probe display Pr1 dP4 Fourth probe display Pr1 rSE Real set actual set Pr2 rEL Software release 5 6 Pr2 Ptb Map code Pr2 Label Name Range Value Level Table 19 1 XR75CX Default Setting Values 2 Only for XR75CX with X REP output ...

Страница 36: ... for E2 Standard and terminated with a 150 ohm resistor at the other end of the network segment 150 ohms between the two communication wires Recommended For reliable communication on some installations it may be necessary to connect a 100 ohm resistor between the XR XM or XEV device s previously identified ground terminal and earth ground Some E2 MODBUS COM Ports Can Support Two Network Segments F...

Страница 37: ...MODBUS Termination BlocksAppendix A Alternate MODBUS COM Wiring Method for E2 XR XM and XEV Devic es 31 Figure A 1 MODBUS Com Wiring Diagram ...

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Страница 39: ...ate Technologies Retail Solutions Inc and or its affiliates collectively Emerson reserves the right to modify the designs or specifications of such products at any time without notice Emerson does not assume responsibility for the selection use or maintenance of any product Responsibility for proper selection use and maintenance of any product remains solely with the purchaser and end user 026 121...

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