Emerson Dixell XC650CX Manuale utente

XC650CX

(v. 3.5)

1592001431 XC650CX GB r3.5 21.07.2020 XC650CX 3/56

INDEX

1. BEFORE PROCEEDING 6

1.1 CHECK THE SW REL.OF THE XC650CX 6

2. GENERAL WARNING 6

2.1 PLEASE READ BEFORE USING THIS MANUAL 6

2.2 SAFETY PRECAUTIONS 6

3. GENERAL DESCRIPTION 7

4. COMPONENTS RELATED TO THE XC650CX 7

4.1 CW15KIT AND CW25KIT: WIRING KITS 8

4.2 CABCJ15 OR CABCJ30: 2PIN CONNECTORS 8

4.3 PP07, PP11, PP30 PP50: 4÷20MAPRESSURE TRANSDUCERS 8

4.4 XJ485CX: TTL /RS485 SERIAL CONVERTER 8

5. WIRING & ELECTRICAL CONNECTIONS 9

5.1 GENERAL WARNINGS 9

5.2 WIRING CONNECTIONS 9

5.3 PROBES CONNECTION 9

5.4 LOAD CONNECTIONS 10

5.5 SAFETY AND CONFIGURABLE DIGITAL INPUTS –FREE VOLTAGE 11

5.6 ANALOG OUTPUT CONNECTION 11

5.7 HOW TO CONNECT MONITORING SYSTEM -RS485 SERIAL LINE 12

6. MOUNTING & INSTALLATION 12

7. FIRST INSTALLATION 13

7.1 HOW TO SET THE KIND OF GAS 13

7.2 HOW TO SET THE RANGE OF THE PRESSURE PROBES 13

8. USER INTERFACE 14

8.1 DISPLAYING 14

8.2 KEYBOARD 14

8.3 ICONS 15

9. HOW TO SEE AND MODIFY THE SET POINT(S) 15

9.1 HOW TO SEE THE SET POINT OF COMPRESSORS AND/OR FANS 15

9.2 HOW TO MODIFY THE SET POINT OF COMPRESSORS AND/OR FANS 16

10. THE INFO MENU 16

11. PARAMETERS PROGRAMMING 17

11.1 HOW TO ENTER THE “PR1” PARAMETER LIST 17

11.2 HOW TO ENTER IN PARAMETERS LIST “PR2” 17

11.3 HOW TO CHANGE PARAMETER VALUES 17

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12. HOW TO DISABLED AN OUTPUT 18

12.1 HOW TO DISABLED AN OUTPUT DURING A MAINTENANCE SESSION. 18

12.2 OUTPUT DISABLED SIGNALING. 18

12.3 REGULATION WITH SOME OUTPUTS DISABLED. 18

13. RUNNING HOURS OF LOADS 18

13.1 HOW TO DISPLAY THE RUNNING HOURS OF A LOAD. 18

13.2 HOW TO RESET THE RUNNING HOURS OF A LOAD. 18

14. ALARM MENU 19

14.1 HOW TO SEE THE ALARMS 19

15. KEYBOARD LOCKING 19

15.1 HOW TO LOCK THE KEYBOARD 19

15.2 TO UNLOCK THE KEYBOARD 19

16. USE OF THE PROGRAMMING “HOT KEY “ 19

16.1 HOW TO PROGRAM A HOT KEY FROM THE INSTRUMENT (UPLOAD) 19

16.2 HOW TO PROGRAM AN INSTRUMENT USING A HOT KEY (DOWNLOAD) 20

17. LIST OF PARAMETERS 20

17.1 PLANT DIMENSIONING AND TYPE OF REGULATION. 20

17.2 PROBES CONFIGURATION 24

17.3 CONFIGURABLE DIGITAL INPUTS CONFIGURATION 26

17.4 DISPLAY AND MEASUREMENT UNIT 27

17.5 COMPRESSOR REGULATION 27

17.6 LIQUID INJECTION THERMOSTAT 28

17.7 FANS REGULATION 29

17.8 ALARMS –COMPRESSOR SECTION 29

17.9 ALARMS –FANS SECTION 30

17.10 SUCTION SUPERHEAT OF CIRCUIT 1 30

17.11 DYNAMIC SET POINT FOR FAN 31

17.12 ANALOG OUTPUT 1(OPTIONAL)–TERMINALS 29-30 31

17.13 ANALOG OUTPUT 2(OPTIONAL)–TERMINALS 8-10 32

17.14 OTHER 32

18. EVEN CAPACITY COMPRESSORS (CTYP = SPO) 33

18.1 COMPRESSORS WITH SAME CAPACITY –DEAD BAND CONTROL 33

19. UNEVEN CAPACITY COMPRESSORS (CTYP = DPO) 34

20. SCREW COMPRESSORS (CTYP = SCR) 34

20.1 REGULATION WITH SCREW COMPRESSORS LIKE BITZER/HANBELL/REFCOMP ETC 35

21. FAN REGULATION 35

21.1 CONDENSER WITH INVERTER OR ECI FANS–ANALOG OUTPUT SETTING 36

21.2 ANALOG OUTPUT “FREE”37

22. ADDITIONAL FUNCTIONS 39

22.1 COMPRESSOR RUNNING PROOF FUNCTION 39

22.2 FLOOD PROTECTION FUNCTION 40

1592001431 XC650CX GB r3.5 21.07.2020 XC650CX 5/56

22.3 SUCTION SUPERHEAT MONITORING 41

22.4 HOT GAS INJECTION VALVE 42

23. ALARM LIST 42

23.1 TYPES OF ALARMS AND SIGNALING MANAGED 42

23.2 BUZZER MUTING 46

23.3 ALARM CONDITIONS –SUMMARY TABLE 46

24. TECHNICAL FEATURES 49

25. PARAMETERS –DEFAULT VALUES 50

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1. BEFORE PROCEEDING

1.1 Check the sw rel. of the XC650CX

1. Look at the SW rel. of XC650CX printed on the label of the controller.

2. If the SW release is 3.5, proceed, proceed with this manual otherwise contact Dixell at

www.dixell.com to get the right manual.

2. GENERAL WARNING

2.1 Please read before using this manual

•This manual is part of the product and should be kept near the instrument for easy and quick

reference.

•The instrument shall not be used for purposes different from those described hereunder. It

cannot be used as a safety device.

•Check the application limits before proceeding.

•Dixell Srl reserves the right to change the composition of its products, even without notice,

ensuring the same and unchanged functionality.

2.2 Safety Precautions

•Check the supply voltage is correct before connecting the instrument.

•Do not expose to water or moisture: use the controller only within the operating limits avoiding

sudden temperature changes with high atmospheric humidity to prevent formation of

condensation

•Warning: disconnect all electrical connections before any kind of maintenance.

•The instrument must not be opened.

•In case of failure or faulty operation send the instrument back to the distributor or to “Dixell

S.r.l.” (See address) with a detailed description of the fault.

•Consider the maximum current which can be applied to each relay (see Technical Data).

•Ensure that the wires for probes, loads and the power supply are separated and far enough

from each other, without crossing or intertwining.

•Fit the probe where it is not accessible by the end user.

•In case of applications in industrial environments, the use of mains filters (our mod. FT1) in

parallel with inductive loads could be useful.

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3. General description

The XC650CX is designed to manage both compressors and fans in a condensing system such

as a pack. The compressors can be scroll or Stream, simple or multistage.

It’s possible to manage up to 2 suction circuits with a common condenser.

Control is by means of a neutral zone and is based on the pressure or temperature sensed in the

LP suction (compressors) and HP (condenser) circuits. A special algorithm balances the run hours

of the compressors to distribute the work load uniformly.

The controllers can convert both LP and HP pressures and displays them as temperatures.

The front panel offers complete information on the system’s status by displaying the suction and

condenser pressure (temperatures), the status of the loads, possible alarms or maintenance

conditions.

Each load has its own alarm input that is able to stop it when activated.

By means of the HOT KEY the controller can be easy programmed at power on.

The controller can be connected to the X-WEB, controlling and monitoring system, thanks to the

RS485 serial output, using the standard ModBus RTU protocol.

4. COMPONENTS RELATED TO THE XC650CX

Name

Description

Part number

Transformer

TF5 230V/12Vac

CD050010 00

Wiring kit 1.5m and 3m

CW15-Kit (1.5m)

CW25-Kit (2.5m)

DD500001 50

DD500002 50

Female disconnect able connector for digital input

or analog output (4pcs)

CABCJ15 (1,5m)

CABCJ30 (3,0m)

DD200101 50

DD200103 00

TTL /RS485 serial converter

XJ485CX+CABRS02

J7MAZZZ9AA

4-20mA suction pressure transducer

PP11 (-0.5÷11bar)

BE009302 07

4-20mA condenser pressure transducer

PP30 (0÷30bar)

BE009302 04

Hot key for programming

HOT KEY 4K

DK00000100

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4.1 CW15KIT and CW25KIT: wiring kits

The XC650CX is provided with 2

socket connectors with 14 and 12

pins.

For the wiring the CW15KIT (1.5m

cable length) or CWC25KIT (2.5m

cable length) have to be used.

4.2 CABCJ15 or CABCJ30: 2 PIN connectors

NOTE:

Use the connection cable CABCJ15 (1.5m lenght) or the

CABCJ30 (3.0m lenght) for the:

- HP digital input (31-32),

- D.I.7 digital input 7(33-34),

- 0-10Vdc or 4-20mA analogue output (29-30)

- oA6, 12Vdc/40mA digital output (27-28)

4.3 PP07, PP11, PP30 PP50: 4÷20mA pressure transducers

NAME

CABLE LENGTH

RANGE

DIXELL CODE

PP07

2,0MT

-0,5+7 bar rel FE

BE009302 00

PP11

2,0MT

-0,5+11 bar rel FE

BE009302 07

PP30

2,0MT

0+30 bar rel FE

BE009302 04

PP50

2,0MT

0+50 bar rel FE

BE009302 05

4.4 XJ485CX: TTL / RS485 serial converter

The XJ485CX is a TTL/RS485 external

converter. Insert it into the TTL receptacle to

convert the TTL output into a RS485 (+) and (-)

signal for the monitoring system MODBUS_RTU

compatible. (XWEB).

1592001431 XC650CX GB r3.5 21.07.2020 XC650CX 9/56

5. WIRING & ELECTRICAL CONNECTIONS

5.1 General warnings

Before connecting cables make sure the power supply complies with the instrument’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 5A resistive, in case of heavier

loads use a suitable external relay.

5.2 Wiring connections

NOTE

24V version: use terminals 1-2 for power supply;

5.3 Probes connection

5.3.1 General warnings

Pressure probe (4 - 20mAor ratiometric): respect the polarity. If using terminal ends be sure

there are no bear parts which could cause short circuiting or introduce noise disturbance at high

frequencies. To minimize the induced disturbances use shielded cables with the shield connected

to earth.

Temperature probe: it is recommended to place the temperature probe away from direct air

streams to correctly measure the temperature.

5.3.2 Probe wirings

Low voltage side : Keep the cables away from the power cables. Use shielded cable to lengthen the

cables.

NOTE1: The PIN 4 is the common line for the temperature probes

NOTE2: The PIN 6 gives a 12Vdc supply for the 4-20mA pressure transducers

1592001431 XC650CX GB r3.5 21.07.2020 XC650CX 10/56

PP07 PP11, PP30, PP50 4÷20mA pressure

transducers respect the polarity.

Suction (P1C = Cur)

Brown (+) to terminal 6 ; white (-) to terminal 5

Condenser (P2C = Cur)

Brown (+) to terminal 6 ; white (-) to terminal 7

Suction 2 - optional (P3C = Cur)

Brown (+) to terminal 6; white (-) to terminal 3

3 5 7

4 6 8

12V

40mA

Pb1

Pb3 Pb2

Temperature probes (NTC 10K)

Suction: 4-5 (P1C = NTC)

Condenser: 4-7 (P2C =NTC)

Pb3 (P3C = NTC): 4-3

3 5 7

4 6 8

Pb1Pb3 Pb2

Ratiometric transducers (0.5÷4.5Vdc)

Suction (P1C = 0-5)

5 (In); 4(+); 10 (gnd)

Condenser (P2C =0-5)

7 (In); 4(+); 10 (gnd)

Suction 2 - optional (P3C = 0-5)

3 (In); 4(+); 10(gnd)

4 0 m A

1 3 5 7 9

2 4 6 8 10

Pb1 Pb2

Gnd

Pb3

5.4 LOAD CONNECTIONS

NOTE: Main voltage side (12PINs connector):

- the PIN 17, 19 are the common line for the relay outputs with pin 15 and 16

- the PIN 21, 22 are the common line for all the relay outputs with pin 18 and 20

- and all of them have to be used.

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