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Emerson Dixell XEV23D Installing And Operating Instructions

Driver for stepper electronic expansion valves

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XEV23D
DRIVER FOR STEPPER ELECTRONIC EXPANSION
--- 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:
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.
1592025930 XEV23D GB r1.0 07.10.2011.doc
VALVES
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).
tEP
Model
0
Manual settings
1
Alco EX4-EX5-EX6
Alco EX7
2
3
Alco EX8 500
4
Danfoss ETS-25/50
Danfoss ETS-100
5
6
Danfoss ETS-250/400
Sporlan SEI 0.5-11
7
Sporlan SER 1.5-20
8
9
Sporlan SEI 30
Sporlan SER(I) G,J,K
10
11
Sporlan SEI 50
12
Sporlan SEH(I) 100
Sporlan SEH(I) 175
13
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
4
2
3
1
5-6 WIRES VALVES (UNIPOLAR)
Connection
numbering
4
2
3
1
5 – Common
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.
XEV23D
LSt
uSt
CPP
CHd
(steps*10)
(steps*10)
(mA*10)
(mA*10)
Par
Par
Par
5
75
50
10
160
75
10
260
80
7
262
10
10
353
10
11
381
10
0
159
16
0
159
12
0
319
16
0
250
12
0
638
16
0
638
16
0
638
16
SPORLAN
DANFOSS
ALCO EX
SEI-SEH
BLUE
WHITE
BLACK
BROWN
BLACK
WHITE
BLACK
RED
WHITE
GREEN
GREEN
SPORLAN
SAGINOMIYA
ORANGE
ORANGE
RED
RED
YELLOW
YELLOW
BLACK
BLACK
GRAY
GRAY
Sr
(step/s)
Par
Par
10
500
25
500
50
500
10
300
10
300
10
300
5
200
5
200
5
200
5
200
5
200
5
200
5
200
ETS
RED
1/4

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Summary of Contents for Emerson Dixell XEV23D

  • Page 1 XEV23D DRIVER FOR STEPPER ELECTRONIC EXPANSION VALVES --- MANUAL FOR RELEASE 1.2 --- GENERAL WARNING.........................1 GENERAL DESCRIPTION........................1 WIRING CONNECTIONS ........................1 VALVE CONNECTIONS AND CONFIGURATION................1 ABSOLUTE MAXIMUM POWER......................1 FRONT PANEL ........................... 2 USER INTERFACE ..........................2 PARAMETER LIST ..........................2 DIGITAL INPUTS ..........................3 10.
  • Page 2 NOTE: the electrical power absorption of the valve can be unrelated to refrigeration power that valve 7.6 HOW TO: CHANGE A PARAMETERS VALUE has. Before using the actuator, please read the technical manual of the valve supplied by the To change the parameter’s value operate as manufacturer and check the maximum current used to drive the valve in order to verify that they are follows: lower than those indicated below.
  • Page 3 Forced Opening percentage: (0 to 100; nU) if FoP=nU valve works with regulation SuperHeat alarm Hysteresis: (0.0 to 25.5°C; 1 to 77°F) hysteresis for superheat alarm algorithm. If FoP is different from nU the valve stays at FoP opening percentage. This deactivation.
  • Page 4 Probe value at 20mA or at 5V (related to PrM [ PA4 to 50.0 bar] parameter) [PA4 to 725 psi] 14. DISPLAY MESSAGES [-12.0 to 12.0 bar] Pressure probe calibration [-174 to 174 psi] Mess. Cause Outputs type of temperature probe PT1000;...