Emerson Dixell XC645CX Manuale utente

XC645CX

(v. 3.4)

1592001440 XC645CX GB r3.4 31.10.2017.docx XC645CX 2/54

INDEX

1. BEFORE PROCEEDING 5

1.1 CHECK THE SW REL.OF THE XC645CX 5

2. GENERAL WARNING 5

2.1 PLEASE READ BEFORE USING THIS MANUAL 5

2.2 SAFETY PRECAUTIONS 5

3. GENERAL DESCRIPTION 5

4. COMPONENTS RELATED TO THE XC645CX 6

4.1 CWC15KIT AND CWC30KIT:WIRING KITS 6

4.2 CABCJ15 OR CABCJ30: 2PIN CONNECTORS 7

4.3 PP07, PP11, PP30 PP50: 4÷20MAPRESSURE TRANSDUCERS7

4.4 NP4-67: PIPE MOUNTING TEMPERATURE PROBE 7

4.5 XJ485CX: TTL /RS485 SERIAL CONVERTER 7

5. WIRING & ELECTRICAL CONNECTIONS 8

5.1 GENERAL WARNINGS 8

5.2 WIRING CONNECTIONS 8

5.3 PROBES CONNECTION 9

5.4 LOAD CONNECTIONS 10

5.5 SAFETY AND CONFIGURABLE DIGITAL INPUTS –FREE VOLTAGE 10

5.6 ANALOG OUTPUT CONNECTION 11

5.7 HOW TO CONNECT MONITORING SYSTEM -RS485 SERIAL LINE 11

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

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11.2 HOW TO ENTER IN PARAMETERS LIST “PR2” 17

11.3 HOW TO CHANGE PARAMETER VALUES 17

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 KEYBOARD19

16. USE OF THE PROGRAMMING “HOT KEY “ 20

16.1 HOW TO PROGRAM A HOT KEY FROM THE INSTRUMENT (UPLOAD) 20

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 22

17.3 OTHERS INPUTS CONFIGURATION 24

17.4 DISPLAY AND MEASUREMENT UNIT 25

17.5 COMPRESSOR REGULATION 26

17.6 LIQUID INJECTION THERMOSTAT 27

17.7 FANS REGULATION 27

17.8 ALARMS –COMPRESSOR SECTION 27

17.9 ALARMS –DLT SECTION 28

17.10 ALARMS –FANS SECTION 28

17.11 SUCTION SUPERHEAT 28

17.12 DYNAMIC SET POINT FOR FAN 29

17.13 ANALOG OUTPUT (OPTIONAL) 29

17.14 OTHER 30

18. TYPE OF REGULATION 32

18.1 DIGITAL SCROLL REGULATION 32

18.2 PROPORTIONAL BAND REGULATION -ONLY FOR FANS 36

18.3 CONDENSER WITH INVERTER OR EC FANS–ANALOG OUTPUT SETTING 37

18.4 ANALOG OUTPUT “FREE”38

19. ADDITIONAL FUNCTIONS 39

19.1 COMPRESSOR RUNNING PROOF FUNCTION 39

19.2 FLOOD PROTECTION FUNCTION 40

19.3 SUCTION SUPERHEAT MONITORING 41

19.4 HOT GAS INJECTION VALVE 42

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20. ALARM LIST 42

20.1 TYPES OF ALARMS AND SIGNALING MANAGED 42

20.2 BUZZER MUTING 45

20.3 ALARM CONDITIONS –SUMMARY TABLE 46

21. TECHNICAL FEATURES 49

22. PARAMETERS –DEFAULT VALUES 50

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1. BEFORE PROCEEDING

1.1 Check the sw rel. of the XC645CX

1. Look at the SW rel. of XC64D printed on the label of the controller.

2. If the SW release is 3.4, proceed with this manual otherwise contact Dixell 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.

3. General description

The XC645CX is designed to manage both compressors and fans in a condensing system such

as a pack.

The compressors can be digital scroll, simple, multistage.

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Control is by means of a neutral zone or proportional band 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 suction and discharge 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. To guarantee the total

system’s safety, there are also two inputs for low and high pressure switches: when these are

activated, the system is stopped.

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

serial TTL output, using the standard ModBus RTU protocol.

4. COMPONENTS RELATED TO THE XC645CX

Name

Description

Part number

Transformer

TF5 230V/12Vac

CD050010 00

Wiring kit 1.5m and 3m

CWC15-Kit (1,5m)

CWC30-Kit (3,0m)

DD500101 50

DD500103 00

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

4.1 CWC15KIT and CWC30KIT: wiring kits

The XC645CX is provided with 2 socket

connectors with 14 and 6 pins.

For the wiring the CWC15KIT (1.5m cable

length)or CWC30KIT (3.0m cable length) have

to be used.

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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 (25-26),

- i2F configurable digital input (27-

28),

- 0-10Vdc or 4-20mA analogue

output (23-24)

- oA6, 12Vdc/40mA digital output (21-

22) :

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 NP4-67: pipe mounting temperature probe

The NP4-67 temperature probe

can be used on the discharge line

to monitor the discharge

temperature of the Digital Scroll

compressor.

NP4-67 1.5MT NTC probe

Measurement range: -40+110°C,

Cable 1,5mt

Code BN609001 52

4.5 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).

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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 3A resistive, see also Technical

Features, in case of heavier loads use a suitable external relay.

5.2 Wiring connections

Power supply: model at 12Vac/dc supply: use terminals 1-2

Power supply: model at 124Vac/dc supply: use terminals 1-2

- Always use a class 2 transformer with minimum power 5VA such as TF5.

- Terminals [21-22], [23-24], [25-26], [27-28] are provided with JST 2 PINS connectors, they

require the CABCJ15 (1,5mt) or CABCJ30 (3mt) wiring cables

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5.3 Probes connection

5.3.1 General warnings

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.

Pressure probe (4 - 20 mA): 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 (14PINs connector): 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

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

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5.4 LOAD CONNECTIONS

!!!WARNING: Digital Scroll valve coil MUST operate at main voltage (230Vac or 115Vac)!!!!

NOTE: Main voltage side (6PINs connector): the PIN 17 is the common line for all the relay outputs

and for the TRIAC.

5.5 SAFETY AND CONFIGURABLE DIGITAL INPUTS –FREE

VOLTAGE

5.5.1 Loads safety inputs

!!!WARNING: free voltage inputs!!!!

Controller has 7 configurable digital inputs, free voltage.

Each digital input can be set by the related parameter iF01,.. iF07.

The digital inputs are factory pre-set to operate as safety input for loads and as HP and LP. This

input has to collect the status of the safety devices relatedto the compressor such as thermistors,

pressure switches etc.

When this input is activated the correspondence load is switched off and not considered for the

regulation.

The correspondence between loads (compressors or fans) and safety inputs is the following

LOAD

TERMINALS

INPUT

TERMINALS

SETTING

Load 1

15-17

Di1

10-13

iF01 = oA1

Load 2

16-17

Di2

10-14

iF02 = oA2

Load 3

18-17

Di3

10-11

iF03 = oA3

Load 4

20-17

Di4

10-12

iF04 = oA4

Load 6

21-22

Di7

27-28

iF07 = oA6

5.5.2 Circuit with 1 SUCTION and 1 CONDENSER: HP –LP Pressure

switch connections

The controller is preset to manage also the low pressure switch and the high pressure switch,

both the inputs are free voltage.

Connect the pressure switches as described in the following table.

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