Emerson XEV22D Installation And Operation Manual

026-1206 Rev 3 13-DEC-2012

XEV22D Driver for Stepper

Electronic Expansion Valves Installation

and Operation Manual

Emerson Climate Technologies Retail Solutions

1065 Big Shanty Road NW, Suite 100

Kennesaw, GA 30144, USA

Phone: [phone]

Fax: [phone]

Table of Contents

1 INTRODUCTION.......................................................................................................................................................... 1

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

2 OVERVIEW................................................................................................................................................................... 1

2.1. GENERAL DESCRIPTION ................................................................................................................................................ 1

2.2. ORDERING CODE .......................................................................................................................................................... 1

3 WIRING CONNECTIONS........................................................................................................................................... 2

4 WIRING GUIDELINES................................................................................................................................................ 3

5 MOUNTING AND POWERING ................................................................................................................................. 4

5.1. INSTALLATION .............................................................................................................................................................. 4

5.2. P

OWERING THE XEV22D ............................................................................................................................................. 4

5.2.1. Choosing Transformer Sizes................................................................................................................................. 4

5.2.2. XEV22D Power Wiring......................................................................................................................................... 5

5.2.3. Wire Type and Maximum Distances ..................................................................................................................... 5

6 VALVE CONNECTIONS AND CONFIGURATION ............................................................................................... 6

7 ABSOLUTE MAXIMUM POWER............................................................................................................................. 8

8 FRONT PANEL............................................................................................................................................................. 9

8.1. KEYS AND FUNCTIONS ................................................................................................................................................. 9

8.2. XEV22D LEDS............................................................................................................................................................ 9

9 USER INTERFACE .................................................................................................................................................... 10

9.1. TO SEE THE READ-ONLY VALUES ............................................................................................................................. 10

9.2. TO SEE THE SETPOINT ................................................................................................................................................ 10

9.3. TO MODIFY THE SETPOINT ......................................................................................................................................... 10

9.4. TO ENTER PR1 PARAMETERS LIST ............................................................................................................................. 10

9.5. TO ENTER PR2 PARAMETERS LIST ............................................................................................................................. 10

9.6. TO MODIFY THE PARAMETERS VALUE ...................................................................................................................... 10

9.7. HOW TO ASSIGN A MODBUS ADDRESS.................................................................................................................... 11

10 PARAMETERS.......................................................................................................................................................... 12

11 DIGITAL INPUTS..................................................................................................................................................... 17

12 FORCED OPENING................................................................................................................................................. 17

13 ELECTRICAL CONNECTIONS ............................................................................................................................ 17

13.1. PROBES ..................................................................................................................................................................... 17

14 RS485 SERIAL LINE................................................................................................................................................ 17

15 HOW TO USE THE HOT KEY............................................................................................................................... 18

15.1. HOW TO PROGRAM A HOT KEY FROM THE CONTROLLER (UPLOAD)...................................................................... 18

15.2. HOW TO PROGRAM THE CONTROLLER USING A HOT KEY (DOWNLOAD) ............................................................... 18

16 DISPLAY MESSAGES ............................................................................................................................................. 19

16.1. ALARM RECOVERY ................................................................................................................................................... 19

Table of Contents • v

17 SPECIFICATIONS ................................................................................................................................................... 20

18 E2 MODBUS NETWORK WIRING ....................................................................................................................... 21

19 ECT MODBUS NETWORKING TO E2S............................................................................................................... 22

19.1. COM PORT ASSOCIATIONS - E2 VERSIONS 3.XX AND BELOW ................................................................................ 22

19.2. COM PORT ASSOCIATIONS - E2 VERSIONS 4.2 AND ABOVE ................................................................................... 23

19.3. E2 SETUP OF DEVICES .............................................................................................................................................. 23

19.3.1. Set Up Network Ports........................................................................................................................................ 23

19.3.2. Add and Connect the Device............................................................................................................................. 23

19.4. WIRING TYPES .......................................................................................................................................................... 25

19.5. MODBUS TERMINATION BLOCKS ........................................................................................................................... 25

20 STANDARD VALUES .............................................................................................................................................. 26

vi • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

1 Introduction

2 Overview

1.1. General Warning

Please read the following safety precautions and

warnings before using this manual:

CAUTION!

• This manual is part of the product and
should be kept near the controller for easy

and quick reference.

• The controller should not be used for purposes
different from those described in this manual. It can­not be used as a safety device.

• Check the application limits before proceeding.

SAFETY PRECAUTIONS AND
WARNINGS!

• Check that the supply voltage is correct

before connecting the controller.

• Do not expose to water or moisture: use the con­troller only within the operating limits and avoid sud­den temperature changes with high atmospheric
humidity to prevent condensation from forming.

• Warning! Disconnect all electrical connections
before performing any kind of maintenance.

• Fit the probe where it is not accessible by the end
user. The controller must not be opened.

• In case of failure or faulty operation, send the
controller back to Retail Solutions (see address) with a
detailed description of the fault.

• Verify the maximum current that can be applied
to each relay (see Section 17, Specifications).

• 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 main filters (our mod. FT1) in paral­lel with inductive loads could be useful.

2.1. General Description

The XEV22D controller is capable of driving a
wide variety of stepper electronic expansion valves.
The controller regulates the superheat (SH) of the flu­id that runs into the refrigeration unit to obtain opti­mized performance and functioning of the evaporator
independent of climate or load conditions.

XEV22D controllers are equipped with two (2)
probe inputs, one for a 4 to 20mA (or 0 to 5V) pres­sure transducer and another one for a Pt1000 or NTC
temperature probe.

The LAN connection transmits the pressure signal
to the other XEVs; this allows the use of only one
pressure transducer in multiplexed cabinet applica­tions. The controller can also have two (2) configu­rable digital inputs, the first one is free of voltage and
the other one is at high voltage, to simplify connec­tions with cooling request signal.

With the integrated display, it is possible to see the
superheat (SH) value, the degree of valve opening, or
the probe values; the local keyboard enables the con­troller to be programmed without any other devices.

An RS485 serial link connects the controller to
other Emerson monitoring and supervising systems.

2.2. Ordering Code

Device

Name

XEV22D

Table 2-1 - Product Ordering Code

Dixell Code

XEV22D-1C0F0B

X0JFGAESG3NA-000

Emerson

Code

318-5001

General Warning Introduction • 1

3 Wiring Connections

The superheat regulation is performed only when the cooling digital input is enabled. Figure 3-1 shows how

the device takes the request of cooling:

Figure 3-1 - How XEV22D Acts on Cooling Request

See Figure 3-2 for wiring. The “First Level” indicates the connections on the floor of the 4-DIN module and

“Second Level” indicates the connections on the first floor that are only for the stepper motor of the valve and
for the Hot Key.

Figure 3-2 - XEV22D Wiring Connections

2 • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

4 Wiring Guidelines

DEVICE TYPE RETAIL SOLUTIONS

ANALOG TEMP SENSOR
DIGITAL INPUT

RS-485 NETWORK BELDEN #8761 #22-2 SHIELDED

PRESSURE TRANSDUCER **BELDEN #8771 #22-3 SHIELDED

*STEPPER VALVE Use valve manufacturer’s harness with a maximum length not

POWER LOADS AND VALVE

Table 4-1 - Wiring Guidelines

BELDEN #8761 #22-2 SHIELDED

Retail Solutions P/N 035-0002

Retail Solutions P/N 035-0002

BELDEN #8641 #24-2 SHIELDED

Retail Solutions P/N 135-8641

Retail Solutions P/N 135-8771

**#8771 for alternate 600v rated wire use BELDEN #8618 16
AWG

to exceed 30 feet (10 meters).

Allow a maximum wire size of 14 AWG (2 mm

2

).

Ordering Code Wiring Guidelines • 3

5 Mounting and

Powering

The XEV22D is usually mounted by the Refriger­ation equipment manufacturer. Therefore, the install­er need only make the necessary connections between
the boards and the site controller(s).

In some instances, an installer may be required to
mount the XEV22D. There are no restrictions on the
location of the XEV22D; however, the controller
should be mounted in a location protected from mois­ture. Typically, mounting inside the electrical control
panel of a package unit is acceptable.

5.1. Installation

The XEV22D uses a DIN mount installation.

Figure 5-1 - DIN Mounting

Mount: On a DIN rail (EN 50022,

DIN 43880) Fastened with
screws via the removable
plastic flaps

Material: PC-ABS Thermoplastic

Self-extinguishing: VO (UL94)

Comparative Tracking
Index (CTI):

Color: Gray

Table 5-1- XEV22D Enclosure Specification

4 • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

300V

5.2. Powering the XEV22D

Retail Solutions supplies a wide variety of 24VAC
transformers with varying sizes without center taps.

Table 5-2 shows the transformer sizes and are non

center-tapped.

5.2.1. Choosing Transformer Sizes

The transformer used to power the XEV22D

should have at least a 20VA rating. The XEV22D

should not share a transformer with any other de­vices.

Transformer

Part Number

640-0040 50VA 110/208/220 VAC

640-0041 50VA 110 VAC

640-0042 50VA 220 VAC

Table 5-2- Transformer Compatible with XEV22D

VA Rating

Primary

Voltage

5.2.2. XEV22D Power Wiring

The XEV22D can be powered by one of the 50VA

non-center-tapped transformers listed in Table 5-2.

Neither side of the secondary should be connected
to ground. Also, do not connect the center tap (if pro­vided on the transformer) to ground. The entire sec­ondary of the transformer should be isolated from any
ground.

5.2.3. Wire Type and Maximum

Distances

Two-conductor non-shielded cables are the rec­ommended wire for connecting the transformer to the

XEV22D, see Table 5-3 for power wiring types.

Shielded cable should not be used for power wiring.
The center tap should be left disconnected, if present
on the transformer.

14AWG:

Feet = 1920/VA

18AWG:

Feet = 739/VA

(VA is the total VA rating of the controller)

For example, if you had an 18 VA load:

14 AWG: 24 ft.

18 AWG: 9ft. (rounded down)

Sensors requiring 24VAC should not be powered

from the same transformer powering the input board.

Any devices that will be connected to the XEV22D’s
inputs or outputs must be powered with a separate
24VAC transformer.

Power Wiring Types
14 AWG Belden 9495
18 AWG Belden 9495

Table 5-3- Power Wiring Types

The wire length from the transformer determines
the type wire gauge used. In most cases, the distance
between the XEV22D and the transformer that sup­plies power to it is not enough to be of concern;

how­ever, it is very important NOT to exceed this
maximum wire length or the controller will not oper­ate correctly.

Use these formulas to determine if the wire gauge

you are using fits within specification:

Powering the XEV22D Mounting and Powering • 5

6 Valve Connections and Configuration

CAUTION! 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 the tEP parameter table reported below:

tEP Model

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

Table 6-1 - tEP Parameter Table

CAUTION! The maximum distance between an XEV22 controller and a valve must not exceed 30 feet (10
meters).

LSt

(steps*10)

uSt

(steps*10)

CPP

(mA*10)

CHd

(mA*10)

Sr

(step/s)

If you can locate your valve in the table, select the valve through the tEP parameter. This way, you can be

sure of the correct configuration (refer to Table 6-1).

Regarding connections, use Table 6-2 below for a quick reference on the connection mode for valves of dif-

ferent manufacturers. In any case, the unique and valid reference has to be considered the datasheet made by
manufacturer of the valve:

Connection
Numbering

4 BLUE WHITE BLACK

2 BROWN BLACK WHITE

3 BLACK RED RED

1 WHITE GREEN GREEN

Table 6-2 - 4-Wire Valves (Bipolar)

6 • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

ALCO EX*

SPORLAN

SEI-SEH

DANFOSS ETS

Connection
Numbering

4 ORANGE ORANGE

2 RED RED

3 YELLOW YELLOW

1 BLACK BLACK

5- Common GRAY GRAY

Table 6-3 - 5 to 6 Wire Valves (Unipolar)

NOTE: After making the connection, switch
the XEV controller OFF and ON to make sure
that the valve is positioned properly.

SPORLAN SAGINOMIYA

It is highly recommended that the maximum dis­tance of the stepper valve harness length between the
valve and the XEV22D controller must not exceed 30
feet (10 meters).

If the valve harness length must be extended be­yond 30 feet (10 meters), Emerson Retail Solutions

provides an Inductor Extender (P/N 335-3500) for use

with Sporlan Valves ONLY.

The Inductor Extender (P/N 335-3500) is ONLY

for use with Sporlan Bipolar 4-wire stepper valves
with 100 ohm or 75 ohm phase resistance.

When using the Inductor Extender, the XEV22D
controller “CPP” parameter setting MUST be less
than 20; otherwise the Valve, Controller, and/or In­ductor Extender will be damaged or have its life ex­pectancy drastically shortened.

Refer to Table 6-1 for the list of the XEV series

controller supported Sporlan Stepper valves. The In­ductor Extender can ONLY be used with Sporlan Bi­polar Stepper valves that have a setting of 16 or 12 in
the “CPP” column.

The recommended CPP parameter should NOT be
increased to create AC voltage at the valve, if the
valve harness length is over 30 feet, an Inductor Ex­tender MUST be added into the 4-wire valve harness.

When using the Inductor Extender

(P/N 335-3500), any stepper valve harness extensions

MUST not exceed 170 feet total length.

Use 14 AWG wire for valve harness extensions in
conduit. If the valve harness extension is not in con­duit, use 16 AWG or 14 AWG shielded cable with the
shield terminated to an earth grounded chassis. For
valve harness extensions over 100 feet, 14 AWG
shielded cable is recommended.

Using an AC volt meter to measure voltage at the
Valve will not produce accurate results with a voltage
chopper constant current stepper valve drivers as used
in XEV22D controllers.

Instead, an AC current meter can be used to mea­sure valve milliamps as a field verification method.

If the current measurement using the method de­scribed below is less than the recommended value by
more than 20%, the CPP parameter may be increased
by up to 2 (12 to 14 or 16 to 18). The CPP parameter
MUST be less than 20 when using the Inductor Ex-

tender (P/N 335-3500).

For a CPP parameter of 12, the measured current
should be near 120 mA AC, for a CPP setting of 16,
the measured current should be near 160 mA AC.

Below is a description of using an AC current me­ter to test a stepper valve:

Using an AC Volt meter to measure the voltage
across a stepper valve will not produce accurate re­sults if the valve is driven by a voltage chopper con­stant current valve driver. XEV controllers use a
voltage chopper constant current stepper valve driver.

The stepper valve voltage can be checked by using
an in-line True RMS AC current meter. The AC cur­rent meter will produce a more accurate reading than
AC voltage due to the valve drive switching the volt­age to the valve on and off at a frequency much higher
than a voltmeter can read. The voltage chopper con­stant current valve driver maintains a constant AC
current through the valve while the valve is moving,
which makes an AC mA meter ideal to test the valve.
The current can be read in each of the stepper valves
two windings/phases. Due to the fact that current un­like voltage is the same at any point in a wire, the cur­rent test can be performed at the XEV22D controller
or at the valve, and will have the same results. It is no
longer necessary to take apart the case or get on a lift
to access the valve, the in-line current test can be per­formed at the most convenient location.

An AC clamp meter will not have enough resolu­tion to read the stepper valve milliamps.

If the current meter used is not a True RMS meter,
the readings will be approximately10% higher due to
the stepper drive producing square waves and not sin
waves.

1. Power down the XEV22D controller.

2. Disconnect the Sporlan valve white wire from the
XEV22D controller.

3. Connect the meter red lead from the meter 10A ter­minal to the Sporlan valve white wire.

4. Connect the meter black lead from the meter COM
terminal to the XEV22D controller where the Spor­lan white wire was removed.

5. Change the meter dial selector to AC amps (~A).

Powering the XEV22D Valve Connections and Configuration • 7

6. Note the mA terminal on the meter. It should be la­beled 400 mA or 300 mA.

7. Power up the XEV22D controller.

8. Cycle the valve and verify the meter AC amp read­ing is less than 0.3A.

7 Absolute

Maximum Power

CAUTION: 0.3A is 300mA; if the AC amp
reading in step 8 was above your meters mA
terminal label: STOP and check. DO NOT
proceed or your meter will be damaged.

9. If step 8 reading was less than 0.3A, power down

the XEV22D and move the meter red lead from the
meter 10A terminal to the meter 400 mA or 300mA
terminal.

10. If the meter dial selector has an AC mA selection
(~mA), change to the AC mA selection.

11. Power up the XEV22D controller.

12. Cycle the valve and record the maximum constant
meter AC mA reading.

13. The mA reading should be within 20% of the Phase
current CPP setting.

14. The valve voltage can be calculated by multiplying
the mA reading by the valve coil resistance. For ex­ample: 102 mA x 100 ohm valve coil = 10.2V.
150mA x 75 ohm valve coil = 11.25V.

The 2nd valve coil current/voltage can be tested by
repeating the above procedure on the Sporlan valve
Green wire and XEV22D controller.

The in-line AC mA meter is also compatible with
the constant voltage stepper valve drivers used in the
MultiFlex ESR, CC100, and CCB.

The XEV22D controller is capable of driving a

wide range of stepper valves; listed in Table 7-1 are

the maximum values of current that the actuator can
supply to the stepper wiring. Use the TF20D trans­former.

NOTE: The electrical power absorption of the
valve can be unrelated to refrigeration power
that the valve has. Before using the actuator,

read the technical manual of the valve sup­plied by the manufacturer and check the maximum cur­rent used to drive the valve to verify that they are lower
than indicated below in Table 7-1.

Bipolar Valves

VALVE

TYPE

Table 7-1 - Maximum Allowable Valve Current

(4 Wires)

Uni-polar Valves

(5 to 6 Wires)

Maximum Current

0.9A

Maximum Current

0.33A

8 • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

8 Front Panel

Key Function

To lock and unlock the keyboard.

To enter programming mode.

Table 8-1- XEV22D Front Panel Keys and Functions

8.2. XEV22D LEDS

Each LED function is described in Table 8-2:

LED Mode Function

ON Low pressure alarm

Figure 8-1 - XEV22D Front Panel

8.1. Keys and Functions

Table 8-1 shows the keys found on the front panel

of the XEV22D and their corresponding functions:

Key Function

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

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

ON

OFF Valve is completely closed

BLINKING Valve is moving

ON Valve is completely opened

BLINKING

OFF

ON Superheat alarm

Table 8-2 - XEV22D LEDs

Maximum operating pres­sure alarm

Serial communication
present

Serial communication
absent

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

Key Combinations

Table 8-1- XEV22D Front Panel Keys and Functions

Keys and Functions Front Panel • 9

9 User Interface

2. The device will display the first parameter in Pr1

menu.

9.5. To Enter Pr2

9.1. To See the Read-Only
Values

1. Press and release the UP arrow key.

2. The first read-only label is displayed.

3. Slide labels using the UP or DOWN arrow keys.

4. Press the SET key to see the read-only value. To

change and view the parameter, press SET.

5. To exit the fast access menu, press and release the
SET + UP arrow keys or wait for the device time­out for 3 minutes.

9.2. To See the Setpoint

1. Press the SET key until the setpoint is displayed.

2. To return and view the temperature, wait for 5 sec­onds or press the SET key again.

9.3. To Modify the Setpoint

Parameters List

To enter to Pr2 parameters list:

1. Enter the Pr1 level menu.

2. Select Pr2 parameter and press SET.

3. The PAS label will be displayed followed by a
blinking 0.

4. Insert 321 password using the UP and DOWN ar-

row keys.

To change the setpoint value, operate as follows:

1. Press the SET key until the set point is displayed.

2. Use the UP or DOWN arrow keys to change its val­ue.

3. Press SET to store the new value.

9.4. To Enter Pr1
Parameters List

To enter in Pr1 level menu:

1. Press the SET + DOWN arrow keys for about 3 sec­onds.

9.6. To Modify the
Parameters Value

To change the parameter’s value operate as fol-

lows:

1. Enter the programming mode by pressing the SET
and DOWN arrow keys for about 3 seconds.

2. Select the required parameter.

3. Press the SET key to display its value.

4. Use the UP or DOWN arrow keys to change its val­ue.

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

6. To exit, press SET + UP or wait 30 seconds without

pressing a key.

NOTE: The set value is stored even when the
time-out expires and ends the procedure.

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9.7. How to Assign a
MODBUS Address

1. To enter the programming mode, press and hold the
SET and DOWN arrow keys together for about
three (3) seconds or until the dots at the top of the
display start flashing.

2. Arrow down to PR2 and press SET to select.

3. PAS for password will display and flash.

4. Use the arrow keys to set the 321 password. Press

SET to save.

NOTE: If a time-out occurs while setting the
password (PR2 flashes), press SET to resume
entering the password.

5. Use the arrow keys to scroll through and locate

nod. Press SET. Use the arrow keys to scroll

through and locate Std. Press SET.

6. Use the arrow keys to scroll through and locate

Adr. Press SET. Use the arrow keys to choose the

address number of the device. Press SET to save.

7. To exit, press the SET and UP arrow keys together
or wait 15 seconds without pressing a key.

How to Assign a MODBUS Address User Interface • 11

10 Parameters

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

Code Description Function

REGULATION

Fty Kind of gas (R22, 134, 404, 407, 410, 507, CO2)

Type of gas used by plant.

ing of all systems.

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 ensures 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 stop-

ping regulation

tEU Type of stepper motor (uP- bP)

tEP Predefined valve selection (0 to 13)

HFS Kind of motor movement: (HAF; FUL)

LSt Minimum number of steps (0 to Ust)

(0 to 239 sec – 240 = On = unlimited)

If the probe error duration is bigger than PEd, valve closes completely.
The Pf message is displayed. If PEd = On, valve opening is PEo until

probe error finishes.

Selects the kind of valve.

uP = 5 to 6 wires unipolar valves
bP = 4 wires bipolar valves

CAUTION! By changing this parameter, the valve has to be re-initial­ized.

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 controller performs
a fast configuration of the following parameters: LSt, Ust, Sr, CPP, and
CHd. To select the correct value, refer to Table 6-1.

If tEP is different from 0, previous configuration of LSt, Ust, Sr, CPP,
and CHd are overwritten.

• HAF = half step. Use this setting for the unipolar valve.

• FUL = half step. Use this setting for the bipolar valve.

Selects the minimum number of steps. At this number of steps, the valve
should be closed. Read the manufacturer datasheet to set this parameter
correctly. The number of steps should be set within the advised range of
functioning.

CAUTION! When this parameter is changed, the valve must be re-ini­tialized. The controller performs this procedure automatically and re­starts its normal functioning when the programming mode ends.

Fundamental parameter for correct function-

Table 10-1 - List of Parameters

12 • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

Code Description Function

Ust Maximum number of steps (LSt to 800*10)

Selects the maximum number of steps. At this number of steps, the valve
should be opened completely. Read the datasheet provided by the valve
manufacturer to set this parameter correctly. The maximum number of
steps should be set within the advised range of functioning.

CAUTION! When this parameter is changed, the valve must be re-ini­tialized. The controller performs this procedure automatically and re­starts its normal functioning when the programming mode ends.

Sr Step rate (10 to 600 step/sec)

Maximum speed to change a step without losing precision
(= losing steps). Set parameter under the maximum speed.

CPP Current per phase (Only bipolar

valves)

CHd Holding current per phase

(Only bipolar valves)

(0 to 100 * 10mA)
Maximum current per phase used to drive valve.

(0 to 100 * 10mA)
The current per phase when the valve is stopped for more than 4 minutes.

oPE Start opening percentage (0 to 100%)

Opening valve percentage when the start function is active and during

post defrost phase. This phase duration is SFd time.

SFd Start function duration (0.0 to 42.0 min: tens of seconds)

It sets start function duration and post-defrost duration. During this

phase, the alarms are neglected.

Sti Stop regulation interval (0.0 to 24.0 hours: tens of minutes)

After regulating continuously for Sti time, the valve closes for Std time

to prevent ice from forming.

Std Stop duration (0 to 60 min)

Defines the stop regulation time after Sti. During this stop, display shows

StP message.

MnF Maximum opening percentage

at normal functioning

(0 to 100%)
During regulation, it sets the maximum valve opening percentage.

FOP Forced opening percentage (0 to 100 - not used; nU)

If FOP = not used; nU, valve works with regulation algorithm. If FOP
is different from not used; nU, the valve stays at FOP opening percent-

age. This function could be useful during plant starting or during service
operations.

PI PARAMETERS (For use of trained staff only)

Pb Proportional band

(0.1 to 50.0 / 1 to 90°F)

PI proportional band. A value

bigger than 5°C is advised.

Table 10-1 - List of Parameters

How to Assign a MODBUS Address Parameters • 13

Code Description Function

rS Band offset

(-12.0 to 12.0°C / -21to21°F)
PI band offset. It moves the pro-

portional band of the PI. With
rS = 0, the band is between Set
to Set + Pb.

InC Integration time (0 to 255 sec)

PI integration time

PROBE PARAMETERS

tPP Type of pressure transducer (420 – 5V – LAn)

Sets the type of pressure transducer to use: 420 = 4 to 20mA pressure
transducer; 5V = 0 to 5V ratiometric transducer; LAn = the pressure sig-

nal comes from another XEV module.

LPP Enable pressure probe sending

in LAN

(n to Y)
If LPP = Y, the value of pressure read by device is sent in LAN. Only

one device of the LAN can have LPP = Y.

PA4 Probe value At 4mA or At 0V (-1.0 to P20 bar/ -14 to PSI)

Pressure value measured by probe at 4mA or at 0V (related to PrM pa-

rameter).

P20 Probe value 20mA or At 5V (PA4 to 50.0 bar/ 725 psi)

Pressure value measured by probe at 20mA or at 5V (related to PrM pa-

rameter).

OPr Pressure probe calibration (-12.0 to 12.0 bar/ -174 to 174 psi)

ttE Type of temperature probe (PtM to ntC)

Sets the kind of probe used by the controller: PtM = Pt1000, ntC = NTC

probe.

otE Temperature probe calibration (-12.0 to 12.0°C/ -21 to 21°F)

DIGITAL INPUTS

i1P Digital input 1 (free of voltage)

digital input polarity

i1F Digital input 1 (free of voltage)

digital input function

d1d Digital input 1 (free of voltage)

activation delay

i2P Digital input 2 (high voltage)

digital input polarity

i2F Digital input 2 (high voltage)

digital input function

d2d Digital input 2 (high voltage)

activation delay

(CL, OP)
CL = activated when closed; OP = activated when opened

(CCL

, rL)

CCL = cooling call; rL = digital input activates relay

(0 to 255 min)

This activation delay is used only if digital input is configured as rL.
(CL,OP)

CL = activated when closed; OP = activated when opened
(CCL, rL)

CCL = cooling call; rL = digital input activates relay

(0 to 255 min)

This activation delay is used only if digital input is configured as rL.

ALARM

dAo Alarm delay after restarting reg-

ulation

(0.0 to 42.0 min: tens of seconds)

Time between digital input activation (configured as CCL) and alarm
signaling. The LSH alarm is always signaled also during this time.

Table 10-1 - List of Parameters

14 • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

Code Description Function

tdA Type of alarm signaled by relay (ALL, SH, PrE, di)

ALL = all alarm; SH = superheat alarm; PrE = pressure alarm; di = ac-
tivation only when digital input configured as rL is activated.

LPL Lower pressure limit for super-

heat regulation

(PA4 to P20 bar/ psi)
When the suction pressure comes down to LPL, the regulation is per-

formed with a LPL fixed value for pressure; when the pressure comes
back to LPL, the normal pressure value is used. (related to PrM param-

eter).

MOP Maximum operating pressure

threshold

(PA4 to P20 bar/ psi)

If the suction pressure exceeds the maximum operating pressure value,
the controller signals a condition with a High Pressure alarm LED (relat-

ed to PrM parameter).

LOP Lowest operating pressure (PA4 to P20 bar/ psi)

If the suction pressure comes down to this value, a low pressure alarm is

signaled with Low Pressure alarm LED (related to PrM parameter).

PHY Pressure alarm hysteresis (0.1 to 5.0 bar/ 1 to 72 PSI)

Alarm hysteresis to disable alarm signaling.

dML delta MOP-LOP (0 to 100%)

When a MOP alarm occurs, the valve will close at the dML percentage
every one second until the MOP alarm is active. When LOP occurs, the
valve will open at the dML percentage every one second until LOP

alarm is active.

MSH Maximum superheat alarm (LSH to 32.0°C/ LSH to 176°F)

When the superheat exceeds this value, a high superheat alarm is sig-

naled after interval SHd.

LSH Lowest superheat alarm (0.0 to MSH

°C/ 32 to MSH°F)

When the superheat goes down to this value, a low superheat alarm is

signaled after interval SHd.

SHy Superheat alarm hysteresis (0.0 to 25.5°C/ 1 to 77°F)

Hysteresis for superheat alarm deactivation.

SHd Superheat alarm activation de-

lay

(0 to 255 sec)

When a superheat alarm occurs, the time SHd has to pass before signal-

ing alarm.

FrC Fast-recovery constant (0 to 100 sec)

Increases the integral time when SH is below the setpoint. If FrC = 0,

fast-recovery function is disabled.

DISPLAY

Lod Local display Display: (SH, PEr, P1, P2)

SH = superheat; PEr = valve opening percentage; P1 = value of temper-
ature measured; P2 = pressure measured by P2 probe;

CF Temperature measurement

units

(°C to °F)

°C = Celsius degree; °F = Fahrenheit degree

CAUTION! By changing the measurement unit, the regulation parame­ters have to be changed correctly.

PMU Pressure measurement units (bAr, PSI)

bAr = bar; PSI = psi

CAUTION! By changing the measurement unit, the regulation parame­ters have to be changed correctly.

rES Resolution (only °C) (dE to in)

Whether a whole number or decimal point is used in temperature reading

Table 10-1 - List of Parameters

How to Assign a MODBUS Address Parameters • 15

Code Description Function

PrM Pressure visualization mode (rEL to AbS)

rEL = relative pressure; AbS = absolute pressure

All pressure parameters depend on this parameter.

CLP Cooling percentage (Read only)

Displays the percentage of time during which the cooling call was active

in the time interval defined by parameter CLt.

tP1 Temperature probe value (Read only)

Shows the temperature probe value from P1.

PPr Pressure probe value (Read only)

Shows the pressure probe value. The value depends on PrM.

tP2 Temperature from P2 Shows the temperature obtained from conversion of pressure value.

OPP Opening percentage Shows the actual opening percentage of the valve.

d1S Free of voltage digital input

state

(Read only)
Shows the free of voltage digital input.

d2S High voltage digital input state (Read only)

Shows the high voltage digital input state.

Adr RS485 serial address (1 to 247)

Identifies the controller address when connected to a MODBUS compat­ible monitoring system.

Mod MODBUS (AdU to StD)

AdU = (Only for XWEB systems) In this case, the XEV and the thermo-

static controller are considered standalone controller (it requires a cus-

tom library for XWEB); StD = to use XEV in standalone mode, in this

case normal MODBUS-RTU protocol is used.

Ptb Parameters map (Read only)

It identifies the parameters map written by factory.

rEL Release firmware (Read only)

It shows the firmware release.

Pr2 Second level menu

Table 10-1 - List of Parameters

16 • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

11 Digital Inputs

The XEV22D comes with two (2) digital inputs: a
voltage-free input and a high voltage input; both can
be configured as cooling call. In this way the cooling
signal can come from the controllers with direct load
outputs or via the controllers with voltage-free out­puts. One of these inputs must be configured as the
cooling call.

12 Forced Opening

13.1.Probes

The recommended temperature probe placement is

illustrated in Figure 13-1, between 0 and 180 degrees

of inclination with respect to the horizontal pipe sec­tion. For suction pressure probes, there is no particu­lar recommendation.

If necessary, change the FOP parameter to force
the valve to open. For example, if FOP is set to 50
(FOP = 50), the valve will be opened at half of full

scale.

To disable this function, set the FOP to default

value (FOP = not used). The valve opening is en-

abled only when CCL digital input is enabled.

13 Electrical

Connections

The controller comes with a screw terminal block
to connect cables with a cross section up to 2.5 mm
Heat-resistant cables have to be used. Before connect­ing the cables, verify that the power supply complies
with the controller’s requirements. Separate the probe
cables from the power supply cables, from the outputs
and the power connections.

mum current allowed on each relay, in case of heavier
loads, use a suitable external relay.

Do not exceed the maxi-

2

Figure 13-1 - Recommended Temperature Probe Placement

14 RS485 Serial Line

All models can be connected to the monitoring and

supervising system XWEB3000. If Mod = StD, the
standard MODBUS-RTU protocol is used; if Mod =
AdU,

the custom XWEB library is required. This last

configuration makes it possible to use the same serial
address of the thermostat that gives the cooling re­quest to XEV. In this way, it is possible to reduce the
number of addresses used.

.

Probes Digital Inputs • 17

15 How to Use the

Hot Key

15.1.How to Program a Hot
Key From the
Controller (Upload)

1. Program one controller using the front keypad.

2. When the controller is ON, insert the Hot Key and

press the UP arrow key; the uPL message will ap­pear followed by a flashing End LED.

3. Push the SET key and the End LED will stop flash-

ing.

4. Turn OFF the controller, remove the Hot Key, then
turn it ON again.

NOTE: The Err message is displayed in case
an error or failure in programming occurs. In
this case, push the UP arrow key again if you
want to restart the upload or remove the Hot

Key to abort the operation.

NOTE: The Err message is displayed in case
an error or failure in programming occurs. In
this case, turn the unit OFF and then ON if
you want to restart the download or remove the

Hot Key to abort the operation.

15.2.How to Program the
Controller Using a Hot
Key (Download)

1. Turn OFF the controller.

2. Insert a programmed Hot Key into the 5-pin con­nector and then turn the controller ON.

3. Automatically the parameter list of the Hot Key is
downloaded into the controller memory, the doL
message will blink followed by a flashing End

LED.

4. After 10 seconds, the controller will restart work
with the new parameters.

5. Remove the Hot Key.

18 • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

16 Display Messages

Message Cause Outputs

nA None of the digital in-

puts configured as

CCL are activated

Pf The PEd time is

elapsed and the regu­lation is stopped.

P1 Temperature probe

fault

P2 Pressure transducer

fault

HSH High superheat alarm By PI
LSH Low superheat alarm Valve closed

LPL Low pressure limit See LPL parame-

MoP Maximum Operating

Pressure

LoP Lowest Operating

Pressure

StF Start Function en-

abled

StP Regulation stop

caused by Std and Sti

EE Memory anomaly

Valve closed

Valve closed after

PEd. There is a

probe error.

According to PEo
and PEd

According to PEo
and PEd

ter

See dML parame-

ter

See dML parame-

ter

See SFd parameter

Valve closed

16.1.Alarm Recovery

Probe alarms P1 and P2 start a few seconds after

the fault in the probe; they automatically stop few sec­onds after the probe restarts normal operation. Check
the connections before replacing the probe. Maxi-

mum and minimum alarms HSH, LSH, MoP, and
LoP automatically stop as soon as the variable returns

to normal values.

The controller is provided with an internal check

to verify memory integrity. Alarm EE flashes when a

failure in the internal memory is detected. In this case,
call for service.

Table 16-1 - Alarm Signals

Alarm Recovery Display Messages • 19

17 Specifications

Housing Self extinguishing ABS
Dimensions Case:

Front: 4 DIN modules, 70 mm x 135 mm with male and female connectors
Depth: 60 mm

Mounting:
DIN RAIL mounted in a omega (3) din rail

Protection IP20
Connections

Power Supply 24VAC/DC ±10%
Power Absorption

(depending on the valve)
Display Three (3) digits with icons, red LEDs, height 14.2 mm
Inputs 1 temperature probe Pt1000 or NTC

Digital Inputs 1 free of voltage

Outputs for Valve Bipolar or unipolar valves
Data Storage On the non-volatile memory (EEPROM)
Kind of Action 1B
Pollution Grade Normal
Software Class A
Temperature Operating: 0 to 60°C

Relative
Humidity

Resolution 0.1°C or 1°F
Precision at 25°C ±0.7°C ±1 digit

Detachable screw terminal block ≤ 2.5 mm2 wiring

20VA max

1 pressure transducer 4 to 20mA or 0 to 5V

1 at high voltage

Storage: -25 to 60 °C

20 to 85% (no condensing)

Table 17-1 - XEV22D Specifications

20 • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

18 E2 MODBUS Network Wiring

• Connect MODBUS Network to the RS485 Connector on the E2 PIB board (Belden 8641 recommended).

• Note to wire the RS485 +/- polarity at the E2 in the

• Position the three termination jumpers to the UP (terminated) position to provide RS485 termination at the E2.

• Do not connect the shield of the MODBUS network to the E2 PIB center terminal. Instead, use a 100 ohm 1/2 watt
resistor to connect the MODBUS cable shield to earth ground.

• At each XEV22D device, wire the MODBUS cable to the RS485 +/- terminals and connect the MODBUS shield to

the pin 16 terminal.

• Terminate the end of the MODBUS network at the last XEV22D device on the daisy chain with the MODBUS ter-

mination block (P/N 535-2711), or by connecting a 150 ohm resistor between the MODBUS +/- terminals.

reverse of the XEV22D devices.

Figure 18-1 - XEV22D to E2 Wiring Diagram (E2 PIB version 3.xx and below shown in this example)

CAUTION! For the XR, XM, and XEV series of controllers, the shield wire must not come into contact with
any other wire or ground source. If contact with other wires or devices does occur, the 485 MODBUS net­work will malfunction or connected devices will be damaged. This applies to all installations where the

shield is tied to ground through a 100 ohm ½ Watt resistor.

Alarm Recovery E2 MODBUS Network Wiring • 21

19 ECT MODBUS

Networking to
E2s

19.1.COM Port Associations

- E2 Versions 3.xx and

Connect the MODBUS network cable to the three­terminal connector on the COM port you wish to as­sign as MODBUS. Reverse polarity of +/- on RS485
cable from E2 to the device.

Below

Figure 19-2 - MODBUS Networking

COM ports can only be used for one function; in
other words, if COM2 is set up as the I/O network,
you cannot connect MODBUS devices to COM2. En­sure your E2 is equipped with an RS485 COM Card

(P/N 637-4890) and configured in E2 General Servic­es (, Serial tab) to enable COM4 or an

E2 Expansion COM Card (P/N 637-4871) to enable

COM6.

Connect the MODBUS network cable to the three­terminal connector on the COM port you wish to as­sign as MODBUS. Reverse polarity of +/- on RS485
cable from E2 to the device.

Figure 19-1 - Location of E2 COM Ports (E2 Versions 3.xx and
Below)

Connecting an XEV22D controller to an E2 re­quires the E2 to be version 2.84 or above. Contact Re­tail Solutions for upgrade information if the controller
is a version before 2.84.

An E2 has up to three COM ports that can be as­signed for MODBUS communication: COM2, an
RS485 port on the E2 power interface board, and
COM4 and COM6, which are optional ports requiring
expansion cards.

BUS connection of Emerson units.

22 • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

COM4 is recommended for MOD-

19.2.COM Port Associations

- E2 Versions 4.2 and
Above

Figure 19-3 - Location of E2 COM Ports - E2 PIB Board (E2
version 4.2 and above)

An E2 has three COM ports that can be assigned
for MODBUS communication (COM2). COM ports
can only be used for one function; in other words, if
COM2 is set up as the I/O network, you cannot con­nect MODBUS devices to COM2. Ensure your E2 is

configured in E2 General Services (

Serial tab)

to enable COM4 or COM6.

,

3. Press + to open the Serial tab of the General

Controller Info setup screens:

Figure 19-4 - Serial Communications Manager Screen

4. This screen will have a “Connection” field for all
COM ports on the E2. Highlight the COM port con­nection field that will be used for the device, and

press  - LOOK UP. From the list of network
types, select MODBUS.

5. Four fields will become visible underneath the
COM port connection field, which pertain to the
way the device communicates:

• Baud - Default setting is 19.2k. The baud rate

setting should be set to match the baud rate of

the device (9600). (All devices connected to the

same COM port should be set to the same baud
rate.)

• Data Size - Leave this field at the default value
(8).

• Parity - Leave this field at the default value
(None).

• Stop Bits - Leave this field at the default value
(1).

6. Press  to save changes and exit.

19.3.E2 Setup of Devices

19.3.1.Set Up Network Ports

Before setting up device, the port on the E2 that
has the MODBUS cable connected must be set up as
a MODBUS port.

1. Log in to the E2 with Level 4 access.

2. Press  followed by  - General

Controller Info.

COM Port Associations - E2 Versions 4.2 and Above ECT MODBUS Networking to E2s • 23

19.3.2.Add and Connect the Device

To enable communications between E2 and the

units, the devices must be added and addressed in E2.

1. Log in to the E2 with Level 4 access.

2. Press  - Connected I/O Boards

and Controllers.

Figure 19-5 - Num Network Ctrls: NetSetup Screen

3. In the Num Network Ctrls: NetSetup screen, under

the ECT tab, enter the number of devices in the
Quantity field. (Max shows the maximum number

of devices allowed on the network.)

through the front display, and press  to select

it. A window will open where you can specify the
address of the controller. If a network ID has al­ready been selected, its name will be shown next to
the network ID in this list. If the network ID you are
trying to assign has already been used, you must set
the address on this device to a different number that
is not being used.

4. Press  to return to the Network Setup menu,
then select  - Network Summary.

5. Locate the units you added to the network list (press

 and  to scroll through the list). If desired, en-

ter a new name for each device in the Name field.

Figure 19-6 - Network Summary Screen

6. By default, each device in the network list has a
board number of 0. To set the address and begin
communication, choose the device and press

. In the list of MODBUS devices, choose the

address number corresponding to the address set up

Figure 19-7 - List of MODBUS Devices

7. Repeat Steps 5 and 6 until each device has a name

and address.

8. When finished, press  to return to the Net-

work Setup menu, then press  - Network Sum-
mary (Figure 19-8). Locate the devices you set up,

and look at each device’s status in the Status field.

You will see one of the following messages:

• Online - The device is communicating normal-

ly.

• Offline - The device is not communicating, has

not been commissioned, is not functional, or is
not powered up. Verify the device is powered
up, wired correctly, and has the proper network
address, baud rate, and parity.

• Unknown - The device is not communicating or

has not been commissioned. Verify the device
is powered up, wired correctly, and has the
proper network address, baud rate, and parity.

• No Port - No port is set up in the E2 Serial Con-

figuration Manager to be a MODBUS port.

• Wrong FW Rev - This message is likely caused

by the device having a firmware version older
than the minimum revision required by E2 for
communication. Replace the device with a new
one or a device that has the latest version of

24 • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

firmware on it.

Figure 19-8 - Network Summary Screen

19.4.Wiring Types

Retail Solutions specifies Belden #8761 shielded
twisted pair cables for use as MODBUS wiring (or
Belden #82761 and Belden #88761 for plenum instal­lations).

For MODBUS network wiring of XEV series of

controllers to E2, Belden #8641 (P/N 135-8641) is the

recommended wire type to use.

19.5.MODBUS Termination
Blocks

Because the XEV22D device has no on-board

means of termination, use the MODBUS termination

block (P/N 535-2711) for termination that can be

wired to the end of the cable segment using the three­pin connector. Wire the two signal wires to the out-

side terminals, and connect the shield to pin 16, keep-

ing the exposed shield wire length as short as possible
(3 inches ideal maximum length).

Figure 19-9 - MODBUS Termination Block (P/N 535-2711)

If the recommended cable is not available in your
area, be sure the wiring meets or exceeds the follow­ing specs:

Shielded? Yes
Conductor Type Twisted Pair
Gauge 18 - 24 AWG
Capacitance between

signal wires
Capacitance between

signal and shield
Maximum Length 4000 ft/18 to 22 AWG

Nominal Impedance 120±50

31 pF/ft or less
(9.45 m) or less

59 pF/ft or less
(17.98 m) or less

(1219.2 m)
2500 ft/24 AWG
(762 m)

The maximum distance between an XEV22 con­troller and a valve must not exceed 10 meters (32
feet). Use only shielded cables with a cross section
greater than or equal to 0.325 mm

2

(AWG22).

Wiring Types ECT MODBUS Networking to E2s • 25

20 Standard Values

NOTE: For viewing and adjusting setpoints, refer to: Section 9.2., To See the Setpoint and Section 9.3., To
Modify the Setpoint.

Label Description Range Default Level

Fty Kind of gas R22, 134, 404, 407, 410, 507, CO2 404 Pr2

PEo Probe error opening percentage 0 to 100% 50 Pr2

PEd Probe error delay before stopping regulation 0 to 239 sec - On On Pr2

tEU Type of stepper motor uP – bP bP Pr2
tEP Automatic valve configuration 0 to 10 1 Pr2
LSt Minimum number of steps 0 – Ust See tEP Pr2

Ust Maximum number of steps LSt – 800 * 10 See tEP Pr2

Sr Step rate 10 to 600 step/s See tEP Pr2
CPP Current per phase (only bipolar valves) 0 to 100 * 10mA See tEP Pr2
CHd Holding current per phase (only bipolar valves) 0 to 100 * 10mA See tEP Pr2

oPE Start opening percentage 0 to 100% 85 Pr2
SFd Start function duration 0.0 to 42.0 min: tens of seconds 1.3 Pr2

Sti Stop regulation interval 0.0 to 24.0 hr: tens of minutes 0 Pr2

Std Stop duration 0 to 60 min 0 Pr2
MnF Maximum opening percentage 0 to 100% 100 Pr2
FOP Forced opening time-out 0 to 100% - not used not used Pr2

PI PARAMETERS (For trained staff use only)

Pb Proportional band 0.1 to 50.0°C/ 1 to 90°F 10.0 Pr2

rS Band offset -12.0 to 12.0°C/ -21 to 21°F 0.0 Pr2

inC Integration time 0 to 255 sec 120 Pr2

PROBE PARAMETERS

tPP Type of pressure transducer 420 - 5V- LAn 420 Pr2
LPP Enable pressure probe sending in LAN n to YnPr2
PA4 Probe value at 4mA or at 0V

(related to PrM parameter)

P20 Probe value at 20mA or at 5V

(related to PrM parameter)

OPr Pressure probe calibration -12.0 to 12.0 bar/ -174 to 174 psi 0 Pr2

ttE Type of temperature probe PtM to ntC PtM Pr2
otE Temperature probe calibration -12.0 to 12.0°C/ -21 to 21°F 0 Pr2

DIGITAL INPUTS

-1.0 bar/ -14 PSI -0.5 Pr2

PA4 to 50.0 bar/ 725 PSI 11.0 Pr2

Table 20-1 - XEV22D Standard Parameter Values

26 • XEV22D I&O Manual 026-1206 Rev 3 13-DEC-2012

Label Description Range Default Level

i1P Free of voltage digital input polarity CL – OP CL Pr2

d1d Digital input 1 (free of voltage) activation de-

0 to 255 min 0 Pr2

lay

i2P Main voltage digital input polarity CL – OP CL Pr2
i2F Main voltage digital input function CCL, rL CCL Pr2

d2d Digital input 2 (Main voltage) activation delay 0 to 255 min 0 Pr2

ALARMS

dAo Alarm delay after restarting regulation 0.0 to 42.0 min: tens of seconds 10.0 Pr2

tdA Type of alarm signaled by relay ALL, SH, PrE, di ALL Pr2

LPL Lower pressure limit for superheat regulation

PA4 to P20 bar/ PSI -0.5 Pr2

(related to PrM parameter)

MOP Maximum operating pressure threshold

PA4 to P20 bar/ PSI 11.0 Pr2

(related to PrM parameter)

LOP Minimum suction pressure limit

PA4 to P20 bar/ PSI -0.5 Pr2

(related to PrM parameter)
PHY Pressure alarm hysteresis 0.1 to 5.0 bar/ 1to 72 PSI 0.1 Pr2
dML delta MOP-LOP 0 to 100% 30 Pr2

MSH Maximum superheat alarm LSH to 32.0 °C/ LSH to 176 °F 80.0 Pr1

LSH Lowest superheat alarm 0.0 to MSH°C/ 32 to MSH°F 2.5 Pr1

SHy Superheat hysteresis 0.1 to 25.5°C/ 1 to 77°F 0.1 Pr2
SHd Superheat alarm activation delay 0 to 255 sec 120 Pr1
FrC Fast-recovery constant 0 to 100 sec 50 Pr2

DISPLAY

Lod Local display SH - PEr – P1 - P2 SH Pr1

CF Temperature measurement units °C - °F °C Pr2

PMU Pressure measurement unit bAr – PSI bAr Pr2

rES Resolution (only °C) dE – in dE Pr2
PrM Type of pressure (absolute/ relative) rEL – AbS rEL Pr2
CLP Cooling call percentage Read only --- Pr2

tP1 Temperature probe value Read only --- Pr1

PPr Pressure probe value Read only --- Pr1

tP2 Temperature converted from pressure probe Read only --- Pr1

OPP Actual opening percentage Read only --- Pr1

d1S Free of voltage digital input state Read only --- Pr1

d2S Main voltage digital input state Read only --- Pr1

Adr Serial address 1 to 247 1 Pr2

Mod MODBUS type StD – AdU StD Pr2

Ptb Parameters map --- --- Pr2

rEL Release software --- --- Pr2

Pr2 Second level menu --- --- Pr1

Table 20-1 - XEV22D Standard Parameter Values

MODBUS Termination Blocks Standard Values • 27

The contents of this publication are presented for informational purposes only and they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described
herein or their use or applicability. Emerson Climate Technologies Retail Solutions, Inc. and/or its affiliates (collectively “Emerson”), reserves the right to modify the designs or specifications of such
products at any time without notice. Emerson does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any product
remains solely with the purchaser and end-user.

026-1206 13-DEC-2012 Emerson is a trademark of Emerson Electric Co. ©2012 Emerson Climate Technologies Retail Solutions, Inc. All rights reserved.