Emerson Dixell XEV23D Installing And Operating Instructions

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XEV23D

tEP

Model

LSt

(steps*10)

uSt

(steps*10)

CPP

(mA*10)

CHd

(mA*10)Sr(step/s)

Manual settings

Par

Alco EX4-EX5-EX6

5755010500

Alco EX7

1607525

500

Alco EX8 500

2608050

500

Danfoss ETS-25/50

2621010

300

Danfoss ETS-100

3531010

300

Danfoss ETS-250/400

3811010

300

Sporlan SEI 0.5-11

159165

200

Sporlan SER 1.5-20

159125

200

Sporlan SEI 30

319165

200

Sporlan SER(I) G,J,K

250125

200

Sporlan SEI 50

638165

200

Sporlan SEH(I) 100

638165

200

Sporlan SEH(I) 175

638165

200

Connection

numbering

ALCO EX

SPORLAN

SEI-SEH

DANFOSS

ETS

BLUE

WHITE

BLACK

BROWN

BLACK

WHITE

BLACK

RED

WHITE

GREEN

Connection

numbering

SPORLAN

SAGINOMIYA

ORANGE

RED

YELLOW

BLACK

5 – Common

GRAY

DRIVER FOR STEPPER ELECTRONIC EXPANSION

VALVES

--- MANUAL FOR RELEASE 1.2 ---

1. GENERAL WARNING.........................................................................................................................1

2. GENERAL DESCRIPTION..................................................................................................................1

3. WIRING CONNECTIONS ...................................................................................................................1

4. VALVE CONNECTIONS AND CONFIGURATION.............................................................................1

5. ABSOLUTE MAXIMUM POWER........................................................................................................1

6. FRONT PANEL ...................................................................................................................................2

7. USER INTERFACE.............................................................................................................................2

8. PARAMETER LIST .............................................................................................................................2

9. DIGITAL INPUTS ................................................................................................................................3

10. FORCED OPENING............................................................................................................................3

11. ELECTRICAL CONNECTIONS...........................................................................................................3

12. RS485 SERIAL LINE...........................................................................................................................3

13. HOW TO: USE THE HOT-KEY...........................................................................................................3

14. DISPLAY MESSAGES........................................................................................................................4

15. TECHNICAL DATA..............................................................................................................................4

16. STANDARD VALUES .........................................................................................................................4

1. GENERAL WARNING

1.1 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.

1.2 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.  Fit the probe where it is not accessible by the End User. 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.

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

parallel with inductive loads could be useful.

2. GENERAL DESCRIPTION

The XEV23D module is able to drive a large variety of stepper electronic expansion valves. XEV23D permits to regulate the superheat (SH) of the fluid that runs into refrigerating unit in order to obtain optimized performance and a functioning of the evaporator independent by climatic or load conditions. XEV23D modules are equipped with two probe inputs, one for 4 to 20mA or 0 to 5V pressure transducer and another one for NTC-EU or NTC-US temperature probe. There are also two configurable digital inputs, the first one is free of voltage and the other ones is free of voltage to pass from the chilling to the heat-pump model. With the useful display it’s possible to see the value of superheat (SH), the degree of opening of the valve or the probe values, the local keyboard allows to program the instrument without any other devices. To complete instrument equipment, a RS485 serial link permits to connect XEV23D to dIXEL monitoring and supervising systems.

3. WIRING CONNECTIONS

The superheat regulation is performed only when the cooling digital input is enabled. The following scheme shows how the device takes the request of cooling:

4. VALVE CONNECTIONS AND CONFIGURATION

WARNINGS

1. To avoid possible problems, before connecting the valve configure the driver by making the right changes on the parameters. Select the kind of motor (tEU parameter) and check if the valve is present in tEP parameter table reported here below.

2. The max distance between an XM controller and a valve must not exceed 10 m. To avoid any problems, use only shielded cables with section greater than or equal to 0.325 mm² (AWG22).

If you can see your valve on the table, please select the valve through tEP parameter. In this way, you can be sure of a right configuration.

About the connection, please pay attention to the following table to have a quick reference on the connection mode for valves of different manufacturer. In any case, the unique and valid reference has

to be considered the datasheet made by manufacturer of the valve:

4 WIRES VALVES (BIPOLAR)

5-6 WIRES VALVES (UNIPOLAR)

Please see the following scheme to make the right wirings. With "First Level" are indicated the connections on the floor of the 4 DIN module and, of course, with "Second Level" the connections of the 1st floor that are only for the stepper motor of the valve and for HOT-KEY.

AFTER MAKING THE CONNECTION, PLEASE SWITCH OFF AND ON THE XEV CONTROLLER IN ORDER TO BE SURE OF THE RIGHT POSITIONING OF THE VALVE.

5. ABSOLUTE MAXIMUM POWER

XEV23D is able to drive a wide range of stepper valves, in the following table are indicated the maximum values of current that the actuator can supply to the stepper wiring. The dIXEL transformer to use is the TF20D.

1592025930 XEV23D GB r1.0 07.10.2011.doc XEV23D 1/4

NOTE: the electrical power absorption of the valve can be unrelated to refrigeration power that valve

VALVE

TYPE

BIPOLAR VALVES

(4 wires)

Maximum Current 0.9A

UNIPOLAR VALVES

(5-6 wires)

Maximum Current 0.33A

To display and to modify the set point. In programming mode it selects a parameter or it confirms a value.

By pressing and releasing this key, it’s possible to see the values of the probes. In programming mode it slides the codes of the parameters or it increases their values.

In programming mode it slides the codes of parameters or it decreases their values.

KEYS COMBINATIONS

To lock or to unlock the keyboard

To enter programming mode.

LED

MODE

Function

Low pressure alarm

Maximum Operating Pressure alarm

OFF

Valve is completely closed

BLINKING

Valve is moving

Valve is completely opened

BLINKING

Serial communication present

OFF

Serial communication absent

Superheat alarm

To enter in “Pr1” level menu:

1) Pressing SET+ DOWN buttons for about 3 seconds.

2) Instruments shows first parameter in Pr1 menu

To enter to “Pr2” parameters list:

1. Enter to “Pr1”.

2. Select “Pr2” parameter and press SET.

3. The “PAS” label will be shown, then “0--” with 0 blinking.

4. Insert “321” password through UP and DOWN buttons, then press SET to confirm.

To change the parameter’s value operate as follows:

1. Enter the Programming mode by pressing the Set and DOWN button for about 3s.

2. Select the required parameter.

3. Press the SET button to display the value.

4. Use UP or DOWN to change the value.

5. Press SET to store the new value and move to the following parameter.

To exit: Press SET + UP or wait 30s without pressing any button.

NOTE: the set value is stored even when the procedure is exited by waiting the time-out to expire.

SEt

SH Set point in Chill mode (0,0 ÷ 24,0°C - 0 ÷ 43 °F)

St2

SH Set point in Heat Pump mode (0,0 ÷ 24,0°C - 0 ÷ 43 °F)

FtY

Kind of gas: (R22, 134, 404, 407, 410, 507, CO2) type of gas used by plant. This is a

fundamental parameter for correct functioning of all system.

PEo

Probe Error opening percentage: (0 to 100%) if a temporary probe error occurs, valve

opening percentage is PEo until PEd time is elapsed. If PEO is different from 0 it assures cooling also with probe error, because even if the device cannot calculate superheat the valve can work at PEo percentage.

PEd

Probe Error delay before stopping regulation: (0 to 239sec; 240=On=unlimited) if

probe error duration is higher than PEd, valve will close completely and “Pf” message will be showed. With PEd=on, valve opening is PEo until probe error finishes.

tEU

Type of Stepper motor: (UP; bP) it permits to select the kind of valve. UP = 5-6 wires

unipolar valves; bP = 4 wires bipolar valves. !!!!! WARNING !!!!! by changing this parameter the valve has to be reinitialized.

tEP

Predefined valve selection: (0 to 13) if tEP=0 the user has to modify all the parameters

of configuration in order to use the valve. If tEP is different from 0 the device performs a fast configuration of the following parameters: LSt, USt, Sr, CPP, CHd. To select the right number please read the following table:

tEP

Model

LSt

(steps*10)

uSt

(steps*10)

CPP

(mA*10)

CHd

(mA*10)Sr(step/s)

Manual settings

Par

Alco EX4-EX5-EX6

5755010500

Alco EX7

1607525

500

Alco EX8 500

2608050

500

Danfoss ETS-25/50

2621010

300

Danfoss ETS-100

3531010

300

Danfoss ETS-250/400

3811010

300

Sporlan SEI 0.5-11

159165

200

Sporlan SER 1.5-20

159125

200

Sporlan SEI 30

319165

200

Sporlan SER(I) G,J,K

250125

200

Sporlan SEI 50

638165

200

Sporlan SEH(I) 100

638165

200

Sporlan SEH(I) 175

638165

200

If tEP is different from 0, previous configuration of LSt, uSt, Sr, CPP and CHd will be overwritten.

HFS

Kind of motor movement: (HAF; FUL)

 HAF = half step. Use this setting for the unipolar valve.  FUL = half step. Use this setting for the bipolar valve.

LSt

Minimum number of steps: (0 to USt (*10)) it permits to select the minimum number of

steps. At this number of steps the valve should be closed. So it’s necessary the reading of manufacturer datasheet to set correctly this parameter. It’s the minimum number of steps to stay in advised range of functioning. !!!!! WARNING !!!!! after changing this

parameter the valve will have to be reinitialized. The device performs this procedure automatically and restarts its normal functioning when the programming mode ends.

USt

Maximum number of steps: (LSt to 800 (*10)) it permits to select the maximum number

of steps. At this number of steps the valve should be completely opened. Read the datasheet provided by manufacturer of the valve to set correctly this parameter. It’s the maximum number of steps to stay in advised range of functioning. !!!!! WARNING !!!!!

after changing this parameter the valve will have to be reinitialized. The device performs this procedure automatically and restarts its normal functioning when the programming mode ends.

ESt

Extra step in closing phase: (0 to 255 (*10)) it sets the number of extra steps the

controller performs, when the valve is closed at start up, to force the closure of the valve.

Step rate: (10 to 600 step/sec) it is the maximum speed to change step without losing

precision (=losing steps). It’s advised to stay under the maximum speed.

CPP

Current per phase (only bipolar valves): (0 to 100 (*10mA)) it is the maximum current per phase used to drive valve. It’s used only with bipolar valves.

CHd

Holding current per phase (only bipolar valves): (0 to 100 (*10mA)) it is the current per phase when the valve is stopped for more than 4 minutes. It’s used only with bipolar valves.

oPE

Start opening Percentage: (0 to 100%) opening valve percentage when start function is active and during post defrost phase. This phase duration is SFd time.

SFd

Start Function duration: (0.0 to 42min 00s, res. 10s) it sets start function duration and post-defrost duration. During this phase the alarms are neglected.

MnF

Maximum opening percentage at normal Functioning: (0 to 100%) during regulation

it sets the maximum valve opening percentage.

has. Before using the actuator, please read the technical manual of the valve supplied by the manufacturer and check the maximum current used to drive the valve in order to verify that they are lower than those indicated below.

6. FRONT PANEL

6.1 XEV23D LEDS

On display there are some luminous dots. Their meaning is described in the following table:

7.6 HOW TO: CHANGE A PARAMETERS VALUE

8. PARAMETER LIST

NOTE: All pressure parameters are relatives or absolutes depending on the PrM parameter

REGULATION

7. USER INTERFACE

7.1 HOW TO: SEE THE READ-ONLY VALUES

1) Press and release UP button.

2) First read-only label is showed;

3) Brows parameter labels with UP or DOWN buttons.

4) Press SET to see read-only value. To change parameter, press SET.

5) To leave the fast access menu, press and release SET+UP or wait for time-out to expire (about 3 minutes).

7.2 HOW TO: SEE THE SET POINT

1) Press the SET buttons until the set point will be showed.

2) To come back to see temperature, wait about 5s or press newly SET key.

7.3 HOW TO: MODIFY THE SET POINT

To change the set point value operate as follows:

1) Press the SET button until the set point will be showed.

2) Use UP or DOWN buttons to change its value.

3) Press SET button to store the new value.

7.4 HOW TO: ENTERING “PR1” PARAMETER MENU

7.5 HOW TO: ENTERING “PR2” PARAMETER MENU

1592025930 XEV23D GB r1.0 07.10.2011.doc XEV23D 2/4

+ 2 hidden pages

Emerson Dixell XEV23D Installing And Operating Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual