Emerson XEV22D- User Manual

1592025920 XEV22D GB r3.0 02.02.2011.doc

XEV22D

1/1

XEV22D

DRIVER FOR STEPPER ELECTRONIC EXPANSION

VALVES

--- MANUAL FOR RELEASE 0.8 ---

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 ___________________________________________________________ 3

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 XEV22D module is able to drive a large variety of stepper electronic expansion valves. XEV22D
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.
XEV22D 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. A LAN connection permits to
transmit the pressure signal to others XEV modules in order to use only one pressure transducer in
multiplexed cabinet applications. There are also two configurable digital inputs, the first one is free of
voltage and the other ones is at high voltage in order to simplify connections with cooling request
signal. 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 XEV22D 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:

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.

4. VALVE CONNECTIONS AND CONFIGURATION

!!!!!!!!!! WARNING !!!!!!!!!!!!!!
To avoid any possible problem, 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:

tEP

Model

LSt

(steps*10)

uSt

(steps*10)

CPP

(mA*10)

CHd

(mA*10)

Sr

(step/s)

0

Manual settings

Par

Par

Par

Par

Par

1

Alco EX4-EX5-EX6

5

75

50

10

500

2

Alco EX7

10

160

75

25

500

3

Alco EX8 500

10

260

80

50

500

4

Danfoss ETS-25/50

7

262

10

10

300

5

Danfoss ETS-100

10

353

10

10

300

6

Danfoss ETS-250/400

11

381

10

10

300

7

Sporlan SEI 0.5-11

0

159

16

5

200

8

Sporlan SER 1.5-20

0

159

12

5

200

9

Sporlan SEI 30

0

319

16

5

200

10

Sporlan SER(I) G,J,K

0

250

12

5

200

11

Sporlan SEI 50

0

638

16

5

200

12

Sporlan SEH(I) 100

0

638

16

5

200

13

Sporlan SEH(I) 175

0

638

16

5

200

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)

Connection

numbering

ALCO EX

SPORLAN

SEI-SEH

DANFOSS

ETS

4

BLUE

WHITE

BLACK

2

BROWN

BLACK

WHITE

3

BLACK

RED

RED

1

WHITE

GREEN

GREEN

5-6 WIRES VALVES (UNIPOLAR)

Connection

numbering

SPORLAN

SAGINOMIYA

4

ORANGE

ORANGE

2

RED

RED

3

YELLOW

YELLOW

1

BLACK

BLACK

5 – Common

GRAY

GRAY

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

XEV22D 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.

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

V

A

L

V

E

T

Y

P

E

BIPOLAR VALVES

(4 wires)

Maximum Current 0.9A

UNIPOLAR VALVES

(5-6 wires)

Maximum Current 0.33A