Emerson Dixell IEV12D Wiring diagram

IEV12D - IEV14D
Release FW 1.8

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INDEX
1. GENERAL WARNING....................................................................................5
1.1 PLEASE READ BEFORE USING THIS MANUAL ...............................................................................5
1.2 SAFETY PRECAUTIONS.......................................................................................................5
1.3 PRODUCT DISPOSAL (WEEE).................................................................................................6
2. MAIN CHARACTERISTIC ...............................................................................7
3. USER INTERFACE........................................................................................7
3.1 ICONS OF THE DISPLAY ..............................................................................................................8
3.2 KEYS...................................................................................................................................9
3.3 SCREEN DISPLAY.....................................................................................................................9
3.4 VIEWING THE MEASURED OR CALCULATED VARIABLES........................................................................10
3.5 VIEWING ACTIVE ALARMS,ALARM LOG AND THE UPLOAD FUNCTION ........................................................12
3.6 VIEWING THE SUPERHEATING SET POINT .......................................................................................13
3.7 MODIFYING THE SUPERHEATING SET POINT ....................................................................................13
3.8 VIEWING PARAMETERS OF LEVEL PR1..........................................................................................14
3.9 VIEWING PARAMETERS OF LEVEL PR2..........................................................................................14
3.10 HOW TO MODIFY THE PARAMETERS ............................................................................................16
3.11 MODIFYING THE VALUE OF PASSWORD PR2..................................................................................17
3.12 TEMPERATURE AND PRESSURE PARAMETER VALUES ......................................................................19
4. CONNECTIONS..........................................................................................19
5. DIGITAL INPUTS ........................................................................................21
6. RELAY......................................................................................................22
7. GENERAL DESCRIPTION ............................................................................22
7.1 KIND OF OPERATION ...............................................................................................................23
7.2 CONFIGURATION VALVE ↔CIRCUIT .............................................................................................26
7.3 VALVE MANAGEMENT ..............................................................................................................27
7.4 ALARM MANAGEMENT .............................................................................................................29
8. DESCRIPTION OF PARAMETERS.................................................................30
8.1 PROBE CONFIGURATION PARAMETERS..........................................................................................30
8.2 PARAMETERS TO CONFIGURE THE RELAYS AND DIGITAL INPUTS ............................................................31
8.3 DISPLAY VIEW SETTING PARAMETERS...........................................................................................31
8.4 VALVE CONFIGURATION PARAMETERS ..........................................................................................31
8.5 SYSTEM CONFIGURATION PARAMETERS ........................................................................................31
8.6 ADJUSTMENT PARAMETERS ......................................................................................................32
8.7 OTHER PARAMETERS ..............................................................................................................34
9. PARAMETERS TABLE ................................................................................35
10. ALARM CODES AND ACTIONS ..................................................................45

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11. PARAMETER PROGRAMMING KEY - HOTKEY 4K.........................................47
11.1 DOWNLOAD .......................................................................................................................48
11.2 UPLOAD ...........................................................................................................................48
12. SERIAL OUTPUT ......................................................................................49
13. MAXIMUM POWER ALLOWED....................................................................49
14. INSTALLATION ........................................................................................49
14.1 GENERAL RULES..................................................................................................................50
14.2 ANALOGUE INPUT CONNECTION ................................................................................................50
14.3 SUPERCAP CONNECTION DIAGRAM.............................................................................................52
14.4 LAN CONNECTION ............................................................................................................54
15. PLASTIC CONTAINER...............................................................................55
16. TECHNICAL SPECIFICATIONS ...................................................................55
16.1 ELECTRICAL SPECIFICATION ....................................................................................................55
16.2 ANALOGUE INPUTS ...............................................................................................................56
16.3 DIGITAL INPUTS ...................................................................................................................56
16.4 RELAY OUTPUTS..................................................................................................................56
16.5 OPERATING CONDITIONS ........................................................................................................57

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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.
•Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring
the same and unchanged functionality.
1.2 Safety Precautions
•Do not expose the device to water or moisture: use the controller only within the operating limits
avoiding sudden temperature changes with high atmospheric humidity (to prevent formation of
condenses).
•Use the controller only within the operating limits (temperature, humidity, supply power,
characteristics of the connected loads, etc..).
•Caution: Before beginning any maintenance operation, disconnect all electrical connections of
the instrument
•The instrument must not be opened.
•In case of failure or faulty operation send the instrument back to the distributor or to "Dixell srl"
(see address at the end of this document) with a detailed description of the fault.
•Pay attention to the maximum current applied to each relay (see section "Technical Data").
•Ensure that the wires of probes, power supply and power loads are separated and far enough
from each other, without crossing or intertwining.
•symbol is intended to alert the user to the presence of uninsulated "dangerous voltage"
within the product area of sufficient magnitude to constitute a risk of electric shock to persons.
•symbol is intended to alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying the device
•Dixell Srl reserves the right to modify this manual without notice.
•This manual is part of the product and should be kept near the equipment for its consultation.
•The device cannot be used as a safety device.
•The product should not be used in a different way as shown in the documentation.
•The device must always be placed inside a cabinet, accessible only by authorized personnel.
Separate the power supply of the device from power supply of other electrical devices
connected in the electrical panel (use separated transformer). The secondary of the transformer
must not be connected to earth.

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1.3 PRODUCT DISPOSAL (WEEE)
With reference to Directive 2002/96/EC of the European Parliament and of the Council of 27 January
2003 and to the relative national legislation, please note that:
•There lies the obligation not to dispose of electrical and electronic waste as municipal
waste but to separate the waste.
•Public or private collection points must be used to dispose of the goods in accordance
with local laws. Furthermore, at the end of the product's life, it is also possible to return
this to the retailer when a new purchase is made.
•This equipment may contain hazardous substances. Improper use or incorrect disposal
can have adverse effects on human health and the environment.
•The symbol shown on the product or the package indicates that the product has been
placed on the market after 13 August 2005 and must be disposed of as separated
waste.
•Should the product be disposed of incorrectly, sanctions may be applied as stipulated in
applicable local regulations regarding waste disposal.

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2. Main characteristic
IEV is an electronic controller designed for the management of one or two unipolar stepper motors of
electronic expansion valves.
IEV is available with a single driver for use with single gas circuit (IEV12D) or double drivers for
applications in two gas circuits (IEV14D).
IEV is compatible with several types of refrigerant and the main valves available in the market.
Two different regulation are available:
• STAND ALONE: the digital inputs are used to start the superheat control. Evaporating pressure
transducer and suction temperature probe has to be connected to the IEV;
• LAN: the IEV can be connected to the Ichill 200 EVO series to control the machine (chiller or heat
pump) and the superheat.
Evaporating temperature probe has to be connected to the IEV and suction pressure transducer can be
connected to the IEV or to the Ichill (by configuring dedicated parameters).
To guarantee the best regulation is recommended to connect the suction pressure transducer directly to
the IEV.
Main features:
• management of one or two unipolar electronic expansion valves
• compatibility with several models of valve
• compatibility with different types of refrigerant gas
• manual control of PID regulation or adaptive regulation
• digital inputs to start regulation in STD_ALONE configuration
• LAN connection with IC 200 EVO family controllers
• double- digit display for simultaneous multiple information
3. User interface

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3.1 Icons of the display
°C -°F
BAR-PSI
ON when the displays show a temperature or pressure.
ON in parameter programming if the displays show temperature or pressure set
points/differentials.
%
ON when the displays show the opening percentage of one of the two valves.
ON when the valve is activated for adjustment.
Both can be ON if both valves are in adjustment mode.
ON when the display shows the temperature/pressure/superheating of valve 1 or valve 2
(valve selection via ).
ON and flashing if the valve is closing or opening.
Remains ON if the valve is in a static position.
open
ON if the valve is opening.
close
ON if the valve is closing.
ON and flashing if an alarm is active.
menu
ON if the menu appears.

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3.2 Keys
Press the key to toggle between the information of valve 1 and valve 2.
SET
Press the key to view the superheating set point.
The superheating set point can be modified by pressing the key for 4 seconds.
Press the keys to:
•scroll through the suction temperature, the evaporation pressure, the
superheating value, etc.
•scroll through the parameters and increase/decrease the value of the
parameters being modified
•toggle between the items while browsing the menu
menu
Press this key to access the menu to view the active alarms.
SET +
Press the keys simultaneously for 4 seconds to access the parameter programming
area.
SET +
Press the keys simultaneously to exit from the parameter programming area.
3.3 Screen display
The variables (suction temperature, evaporation pressure, superheating value, opening value of the
valve, etc.) that are to be viewed on the upper and lower displays are selected via the special parameter
(Ec43 and Ec44).
Press the key to view the variables (suction temperature, evaporation pressure, superheating
value, etc.) of valve 1 or valve 2. The icons, which represent the state of the valve (icon ON if
the valve is adjusting), are always displayed, even if the currently displayed variables are those of the
other valve.

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If the variables of valve 1 are shown on the display, only the icons belonging to valve 1 are viewed (V1,
, open, close), except for the status icon ( ).
If the variables of valve 2 are shown on the display, only the icons belonging to valve 2 are viewed (V2,
, open, close), except for the status icon ( ).
The alarms are shown in the lower display, regardless whether they belong to valve 1 or 2. The alarms
are shown alternately with the value that appears in the lower display under normal conditions. If the
probe that is to be displayed is in error, "----" appears instead of the value.
Other parameters involved on visualization/configuration
Ec41 Unit of measure (°C / bar ÷ °F / psi)
Ec42 Pressure measurement (0=relative, 1= absolute)
Ec45 Operning percentage visualization (0=no, 1=yes)
3.4 Viewing the measured or calculated variables
Press the keys to view the values of the following measured and calculated variables
concerning valve 1 or 2:
-Superheating set point (SHC / SHH)
-Superheating value (SH)
-Valve opening (OPEn)
-Suction temperature (SCt1)
-Evaporation pressure (LP1)
-Evaporation temperature (tP1)
-Operation mode (Cool / HEAt)
-Adjustment method (Man –AUto)
Press the key to select whether to view the variables of probe 1 or probe 2.

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3.5 Viewing active alarms, alarm log and the upload function
The following can be viewed by pressing the “menu” key:
•ALrM: active alarms (if present); press to view all the other alarms
•ALoG: alarm log (last 50 alarms with fifo logic)
•UPL: menu to upload the map of parameters (copy the map from HotKey 4K to IEV)
After viewing the last alarm in the AloG menu, ArSt appears on the lower display and PAS on the upper
display. The Alarm log is reset by logging in via the password (default value = 4).

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3.6 Viewing the superheating set point
Pushing SET key it will be visualized superheating cooling set point (SHC) or heating set point
(SHH), depending on operation mode at the time.
If the device is configured for both operation mode, in STD-BY the display shows both set point.
3.7 Modifying the superheating set point
Proceed as follows to modify the superheating set point:
•press SET for 5 seconds
•the superheating set point of valve 1 flashes
•press to modify the superheating set point
•press SET to confirm the value
•the superheating set point of valve 2 (if present) flashes
•press to modify the superheating set point
•press SET to confirm the value and return to the normal display

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3.8 Viewing Parameters of level Pr1
Proceed as follows to view the parameters:
•press SET and simultaneously for 5 seconds
•press to view the desired parameter
•press SET and simultaneously to exit from viewing the parameters
3.9 Viewing Parameters of level Pr2
Proceed as follows to view the parameters:
•press SET and simultaneously for 5 seconds
•press to view the password Pr2 parameter (last parameter on the list)
•press SET
•press to enter the value of password Pr2
•press SET
•the first parameter of the list will appear on the display; from this moment onwards, all the
parameters visible in Pr1 and Pr2 will be displayed

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How to modify visibility level
To modify the visibility lev of a parameter from Pr1 to Pr2 or from Pr2 to Pr1 is necessary:
•enter programming parameters level Pr2
•select the parameter
•push SET key and hold it down then press key
•if the dot point on parameter label is lighted, it means that the parameter is visible also in
Pr1 visibility level
•repeat above procedure to make the parameter visible or not in Pr1 level
Parameter displayed also in Pr1

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Parameter displayed also in Pr2
3.10 How to modify the parameters
Proceed as follows to access the programming area of the parameters displayed in Pr1:
•press SET and simultaneously for 5 seconds
•press to view the parameter that is to be modified
•press SET
•press to modify the value of the parameter
•press SET to confirm the value and move on to the next parameter
•repeat the above steps to modify the other parameters
•press SET and simultaneously to exit from the programming area of the parameters
Proceed as follows to access the programming area of the parameters displayed in Pr2:
•press SET and simultaneously for 5 seconds
•press to view the password Pr2 parameter (last parameter on the list)
•press SET
•press to enter the value of the current password
•press SET to confirm the value
•parameter Et01 will be displayed once again (in this case the parameters of level Pr2 are
displayed)
•press to view the desired parameter
•press SET if the parameter must be modified
•press to enter the new value
•press SET to confirm the value
•press SET and simultaneously to exit from the programming area of the parameters

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Modifying the parameters displayed in Pr1:
3.11 Modifying the value of Password Pr2
Proceed as follows to edit the value of the password:
•press SET and simultaneously for 5 seconds
•press to view the password Pr2 parameter (last parameter on the list)
•press SET
•press to enter the value of the current password
•press SET to confirm the value
•parameter Et01 will be displayed once again (in this case the parameters of level Pr2 are
displayed)
•press to view the password Pr2 parameter (last parameter on the list)
•press SET
•press to enter the new value of the password
•press SET to confirm the value
•press SET and simultaneously to exit from the programming area of the parameters

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3.12 Temperature and Pressure Parameter Values
All parameters that indicate a temperature or pressure can be expressed in degrees Celsius/bar or
Fahrenheit/PSI, according to parameter Ec41 that sets the unit of measurement.
Modifying the Ec41 parameter from Celsius/bar to Fahrenheit/PSI and vice versa does not involve
an automatic update of the parameters from one unit of measurement to the other. Therefore, the
operator must check all the parameters concerning temperature and pressure in order to modify them
accordingly.
In particular, by modifying the Ec41 parameter from °C/bar to °F/PSI:
•the value of the temperature and pressure parameters are multiplied by 10 (with no
decimal).
Modifying the Ec41 parameter from °F/PSI to °C/bar:
•the value of the temperature and pressure parameters are divided by 10 (with a decimal).
When the instrument is switched on, the parameters are verified and modified if they are out of
the specified range of values.
4. Connections
Power connections, probes, digital inputs and relay outputs

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Multipolar connector
Terminal
Type
Description
1
Supply
AC supply: 24Vac
DC supply: Reference “+“ 24 Vdc
2
Pb1
Analogue input 1 (NTC, PTC, PT1000)
3
Pb2
Analogue input 2 (NTC, PTC, PT1000)
4
Pb3
Analogue input 3 (NTC, PTC, PT1000, 0 - 5V, 4 - 20 mA)
5
Pb4
Analogue input 4 (NTC, PTC, PT1000, 0 - 5V, 4 - 20 mA)
6
LAN +
LAN Connection (+ terminal) to connect to IC200 EVO series
7
Supply
AC supply: 24Vac
DC supply: Reference “-“ 24 Vdc
8
Pbc
Analogue inputs common line
9
+12V
Voltage output +12Vdc (to connect current trasducers)
10
GND
Ground (to connect rathiometric probe)
11
+5V
Voltage output +5Vdc (to connect rathiometric probe)
12
LAN -
LAN Connection (- terminal) to connect to IC200 EVO series
Digital input connector
Terminal
Type
Description
28
DI1
Digital input 1
29
C
Common digital inputs
30
DI2
Digital input 2
31
DI3
Digital input 3
32
C
Common digital inputs
33
DI4
Digital input 4
Serial output RS485 and relays output
Terminal
Type
Description
17
RS485 +
RS485 Connection (+ terminal)
18
RS485 -
RS485 Connection (- terminal)
19
C
Common relay 1
20
RL1
Relay 1
21
C
Common relay 2
22
RL2
Relay 2

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Supercap connector
41
+In
Input from XEC Supercap
42
gnd
Ground XEC Supercap
HotKey 4K connector
This connector is used to connect the HotKey to upload or download the configuration parameters.
Valve connector
Set the programming of the configuration parameters before connecting the valve; the connection of a
valve with features not compatible with the model set in the device can result in a failure of the device or
to the valve
Do not connect or disconnect the valve while the device is connected to the power; this operation may
result in the breakdown of the device
Valve 1 connections
Terminal
Type
Description
5
+12V
Voltage output +12Vdc
1
W1
Connection to valve 1 (first coil)
3
W1
Connection to valve 1 (first coil)
2
W2
Connection to valve 1 (second coil)
4
W2
Connection to valve 1 (second coil)
Valve 2 connections
Terminal
Type
Description
5
+12V
Voltage output +12Vdc
1
W1
Connection to valve 2 (first coil)
3
W1
Connection to valve 2 (first coil)
2
W2
Connection to valve 2 (second coil)
4
W2
Connection to valve 2 (second coil)
5. Digital inputs
The device has 4 digital inputs that can be configured via parameters that involve the following
functions:
0 : not configured
o1 : call to adjust circuit 1 - active by an open contact
c1 : call to adjust circuit 1 - active by a closed contact
o2 : circuit 1 cooling/heating function - active by an open contact
c2 : circuit 1 cooling/heating function - active by a closed contact