Emerson Dixell XEV23D Installing And Operating Instructions

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Page 1

XEV23D

tEP

Model

LSt

(steps*10)

uSt

(steps*10)

CPP

(mA*10)

CHd

(mA*10)Sr(step/s)

Manual settings

Par

Alco EX4-EX5-EX6

5755010500

Alco EX7

1607525

500

Alco EX8 500

2608050

500

Danfoss ETS-25/50

2621010

300

Danfoss ETS-100

3531010

300

Danfoss ETS-250/400

3811010

300

Sporlan SEI 0.5-11

159165

200

Sporlan SER 1.5-20

159125

200

Sporlan SEI 30

319165

200

Sporlan SER(I) G,J,K

250125

200

Sporlan SEI 50

638165

200

Sporlan SEH(I) 100

638165

200

Sporlan SEH(I) 175

638165

200

Connection

numbering

ALCO EX

SPORLAN

SEI-SEH

DANFOSS

ETS

BLUE

WHITE

BLACK

BROWN

BLACK

WHITE

BLACK

RED

WHITE

GREEN

Connection

numbering

SPORLAN

SAGINOMIYA

ORANGE

RED

YELLOW

BLACK

5 – Common

GRAY

DRIVER FOR STEPPER ELECTRONIC EXPANSION

VALVES

--- MANUAL FOR RELEASE 1.2 ---

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

1. GENERAL WARNING

1.1 PLEASE READ BEFORE USING THIS MANUAL

 This manual is part of the product and should be kept near the instrument for easy and quick

reference.

 The instrument shall not be used for purposes different from those described hereunder. It cannot

be used as a safety device.

 Check the application limits before proceeding.

1.2 SAFETY PRECAUTIONS

 Check the supply voltage is correct before connecting the instrument.  Do not expose to water or moisture: use the controller only within the operating limits avoiding

sudden temperature changes with high atmospheric humidity to prevent formation of condensation

 Warning: disconnect all electrical connections before any kind of maintenance.  Fit the probe where it is not accessible by the End User. The instrument must not be opened.  In case of failure or faulty operation send the instrument back to the distributor or to “Dixell S.r.l.”

(see address) with a detailed description of the fault.

 Consider the maximum current which can be applied to each relay (see Technical Data).  Ensure that the wires for probes, loads and the power supply are separated and far enough from

each other, without crossing or intertwining.

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

parallel with inductive loads could be useful.

2. GENERAL DESCRIPTION

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

3. WIRING CONNECTIONS

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

4. VALVE CONNECTIONS AND CONFIGURATION

WARNINGS

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

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

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

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

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

4 WIRES VALVES (BIPOLAR)

5-6 WIRES VALVES (UNIPOLAR)

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

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

5. ABSOLUTE MAXIMUM POWER

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

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Page 2

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

VALVE

TYPE

BIPOLAR VALVES

(4 wires)

Maximum Current 0.9A

UNIPOLAR VALVES

(5-6 wires)

Maximum Current 0.33A

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

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

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

KEYS COMBINATIONS

To lock or to unlock the keyboard

To enter programming mode.

LED

MODE

Function

Low pressure alarm

Maximum Operating Pressure alarm

OFF

Valve is completely closed

BLINKING

Valve is moving

Valve is completely opened

BLINKING

Serial communication present

OFF

Serial communication absent

Superheat alarm

To enter in “Pr1” level menu:

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

2) Instruments shows first parameter in Pr1 menu

To enter to “Pr2” parameters list:

1. Enter to “Pr1”.

2. Select “Pr2” parameter and press SET.

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

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

To change the parameter’s value operate as follows:

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

2. Select the required parameter.

3. Press the SET button to display the value.

4. Use UP or DOWN to change the value.

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

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

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

SEt

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

St2

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

FtY

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

fundamental parameter for correct functioning of all system.

PEo

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

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

PEd

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

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

tEU

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

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

tEP

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

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

tEP

Model

LSt

(steps*10)

uSt

(steps*10)

CPP

(mA*10)

CHd

(mA*10)Sr(step/s)

Manual settings

Par

Alco EX4-EX5-EX6

5755010500

Alco EX7

1607525

500

Alco EX8 500

2608050

500

Danfoss ETS-25/50

2621010

300

Danfoss ETS-100

3531010

300

Danfoss ETS-250/400

3811010

300

Sporlan SEI 0.5-11

159165

200

Sporlan SER 1.5-20

159125

200

Sporlan SEI 30

319165

200

Sporlan SER(I) G,J,K

250125

200

Sporlan SEI 50

638165

200

Sporlan SEH(I) 100

638165

200

Sporlan SEH(I) 175

638165

200

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

HFS

Kind of motor movement: (HAF; FUL)

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

LSt

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

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

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

USt

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

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

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

ESt

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

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

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

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

CPP

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

CHd

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

oPE

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

SFd

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

MnF

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

it sets the maximum valve opening percentage.

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

6. FRONT PANEL

6.1 XEV23D LEDS

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

7.6 HOW TO: CHANGE A PARAMETERS VALUE

8. PARAMETER LIST

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

REGULATION

7. USER INTERFACE

7.1 HOW TO: SEE THE READ-ONLY VALUES

1) Press and release UP button.

2) First read-only label is showed;

3) Brows parameter labels with UP or DOWN buttons.

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

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

7.2 HOW TO: SEE THE SET POINT

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

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

7.3 HOW TO: MODIFY THE SET POINT

To change the set point value operate as follows:

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

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

3) Press SET button to store the new value.

7.4 HOW TO: ENTERING “PR1” PARAMETER MENU

7.5 HOW TO: ENTERING “PR2” PARAMETER MENU

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FoP

Forced Opening percentage: (0 to 100; nU) if FoP=nU valve works with regulation

algorithm. If FoP is different from nU the valve stays at FoP opening percentage. This function could be useful during plant starting or during service operations.

PID PARAMETERS (trained staff)

Proportional band in chill mode:

(0.1 to 50.0°C; 1 to 90°F) PI proportional band. A value bigger than 5°C is advised.

Band Offset:

(-12.0 to 12.0°C; -21 to 21°F) PI band offset. It permits to move the proportional band of the PI. With rS=0 the band is between [SEt to SEt+Pb].

inC

Integration time in chill mode: (0 to 255s) PI integration time.

dFc

Derivative time in chill mode: (0 to 255s) PID derivative time.

Pb2

Proportional band in heat-pump mode:

(0.1 to 50.0°C; 1 to 90°F)

PI proportional band. A value bigger than 5°C is advised.

it2

Integration time in heat-pump mode: (0 to 255s) PI integration time.

dt2

Derivative time in heat-pump mode : (0 to 255s) PID derivative time.

Dead band: (0.0 ÷ 25.5 °C; 0 ÷ 45°F) if the superheat is inside the band SH-db/2÷

SH+db/2 the position of the valve is not updated

tPP

Type of Pressure transducer: (420; 5V) it sets type of pressure transducer to use. 420 = 4 to 20mA pressure transducer; 5V = 0 to 5V ratiometric transducer.

PA4

Probe value at 4mA or at 0V: (-1.0 to P20 bar; -14 to P20 psi) pressure value measured by probe at 4mA or at 0V (related to PrM parameter).

P20

Probe value at 20mA or at 5V: (PA4 to 50.0 bar; PA4 to 725 psi) pressure value measured by probe at 20mA or at 5V (related to PrM parameter).

oPr

Pressure probe calibration: -12.0 to 12.0 bar; -174 to 174 psi.

ttE

Type of temperature probe: (PtM; ntC) it allows to set the kind of probe used by the instrument: PtM = PT1000 probe, ntC = NTC-US probe.

otE

Temperature probe calibration: -12.0 to 12.0°C; -21 to 21°F.

i1P

Digital Input 1 (Free of voltage) digital input polarity: (cL, oP) CL = activated when closed; oP = activated when opened.

i1F

Digital Input 1 (Free of voltage) digital input function: (CCL, rL)

- CCL = cooling call;

- rL = digital input activates relay.

d1d

Digital Input 1 (Free of voltage) activation delay: (0 to 255 min) this activation delay is used only if digital input is configured as rL.

i2P

Digital Input 2 (Free of voltage) digital input polarity: (CL, oP) CL = activated when closed; oP = activated when opened.

i2F

Digital Input 2 (Free of voltage) digital input function: (CCL, P-C)

- CCL = cooling call;

- P-C = Switch form chiller to heat pump mode.

d2d

Digital Input 2 (High voltage) activation delay: (0 to 255 min) this activation delay is used only if digital input is configured as rL.

dAo

Alarm delay after restarting regulation: (0.0 to 42min 00s, res. 10s) time between

digital input activation (configured as CCL) and alarm signalling. The LSH alarm is always signalled also during this time.

tdA

Type of alarm signalled by relay: (ALL, SH, PrE, di) ALL = all alarm; SH = superheat

alarm; PrE = pressure alarm; di = activation only when digital input configured as rL is active.

LPL

Lower Pressure Limit for superheat regulation: (PA4 to P20 bar; PA4 to P20 psi)

when suction pressure comes down to LPL, the regulation is performed with a LPL fixed value for pressure. When suction pressure comes back to LPL, the normal pressure value is used (related to PrM parameter).

MoP

Maximum Operating Pressure threshold: (LoP to P20bar; LoP to P20 psi) if suction

pressure exceeds maximum operating pressure value, the instrument signals this situation with an alarm LED (related to PrM parameter).

LoP

Lowest Operating Pressure: (PA4 to MoP bar; PA4 to MoP psi) if the suction pressure

comes down to this value, a low pressure alarm will be signalled with an alarm LED (related to PrM parameter).

PHY

Pressure alarm Hysteresis: (0.1 to 5.0 bar, 1 to 72 psi) pressure hysteresis to disable

alarm signalling.

dML

Delta MoP-LoP: (0 to 100%) when a MoP alarm occurs valve will close of the dML

percentage every one second until MoP alarm is active. When LoP occurs, valve will open of the dML percentage every one second until LoP alarm is active.

MSH

Maximum SuperHeat alarm: (LSH to 80.0°C; LSH to 144°F) when superheat exceeds this value, an high superheat alarm will be signalled after interval SHd.

LSH

Lowest SuperHeat alarm: (0.0 to MSH°C; 0 to MSH°F) when superheat goes down to this value a low superheat alarm is signalled 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 delay: (0 to 255 s) when a superheat alarm occurs, the delay time SHd have to expire before signalling this alarm.

FrC

Fast-recovery Constant: (0 to 100 s) permits to increase integral time when SH is below the set-point. If FrC=0 fast recovery function is disabled.

Lod

Local display: (SH; PEr; P1; P2) SH = superheat; PEr = valve opening percentage; P1 = value of temperature measured; P2 = pressure measured by P2 probe.

Temperature measurement units: (°C; °F) °C = Celsius degree; °F = Fahrenheit

degree. NOTE: by changing measurement unit, the regulation parameters have to be correctly changed.

PMU

Pressure Measurement units: (bAr, PSi) bAr = bar; PSi = psi. NOTE: by changing

measurement unit, the regulation parameters have to be correctly changed.

rES

Resolution (only °C): (dE; in) dE = decimal format; in = integer format.

PrM

Pressure visualization Mode: (rEL; AbS) rEL = relative pressure; AbS = absolute pressure. All pressure parameters depend on this parameter.

CLP

Cooling Percentage (read only): Display the cooling percentage.

tP1

Temperature Probe value (read only): it shows temperature probe value from P1.

PPr

Pressure probe value (read only): it shows pressure probe value. The value depends on PrM.

tP2

Temperature from P2 (read only): it shows temperature obtained from conversion of

pressure value.

oPP

Opening Percentage (read only): it shows the actual opening percentage of the valve.

d1S

Free of voltage digital input State (read only): it shows the free of voltage digital input.

d2S

High voltage digital input State (read only): it shows the high voltage digital input

state.

Mod

ModBus: (AdU; Std) AdU = (Only for XWEB systems) in this case XEV and

thermostatic controller are considered an alone instrument (it requires a custom library for XWEB); Std = to use XEV in stand-alone mode, in this case normal Modbus-RTU protocol is used.

Adr

RS485 Serial Address: (1 to 247) Identifies the instrument address when connected to a

ModBUS compatible monitoring system.

Ptb

Parameters map: (read only) it identifies parameters map written by factory.

rEL

Release Firmware: (read only) it shows firmware release.

Pr2

Second level menu.

Temperature probe placement: between hour 3 and 9 respect to horizontal pipe section. For suction pressure probe there aren’t any particular prescriptions

PROBE PARAMETERS

DIGITAL INPUTS

DISPLAY

9. DIGITAL INPUTS

The device is provided with two digital inputs.

The first one (13-15) is free of voltage and is used to enable the regulation The second one (8-9) is free of voltage and is used to switch form chiller to heat-pump mode. One of these inputs must be configured as cooling call.

10. FORCED OPENING

If necessary, by changing FoP parameter it’s possible to force the valve opening. For example, by setting FoP=50 the valve will be open at half of full scale. To disable this function it’s necessary to set FoP=nU (default value). The valve opening is enabled only when CCL digital input is enabled.

11. ELECTRICAL CONNECTIONS

The instrument is provided with pluggable screw terminal block to connect cables with a cross section up to 2.5 mm2. Heat-resistant cables have to be used. Before connecting cables make sure the power supply complies with the instrument’s requirements. Separate the probe cables from the power supply cables, from the outputs and the power connections. Do not exceed the maximum current allowed on each relay, in case of heavier loads use a suitable external relay.

11.1 PROBES

12. RS485 SERIAL LINE

All models can be connected to the monitoring and supervising system XWEB3000. If Mod=Std standard ModBUS-RTU protocol is used, if Mod=AdU custom XWEB library is required. This last configuration makes possible to use the same serial address of the thermostat that gives the cooling

ALARM

request to XEV. In this way, it’s possible to reduce the number of addresses used.

13. HOW TO: USE THE HOT-KEY

13.1 PROGRAM A HOT-KEY FROM THE INSTRUMENT (UPLOAD)

1) Program one controller with the front keypad.

2) When the controller is ON, insert the HOT-KEY and push UP button; the “uPL” message appears followed a by flashing “End”.

3) Push SET button and the “End” will stop flashing.

4) Turn OFF the instrument, remove the HOT-KEY and then turn it ON again.

NOTE: the “Err” message is displayed in case of any failed programming operation. In this case, push again UP button if you want to restart the upload again or remove the HOT-KEY to abort the operation.

13.2 PROGRAM AN INSTRUMENT USING A HOT KEY (DOWNLOAD)

1) Turn OFF the instrument.

2) Insert a pre-programmed HOT-KEY into the 5-PIN connector and then turn the Controller ON.

3) Automatically the parameter list present into the HOT-KEY will be downloaded into the Controller memory. The “doL” message will blink during this operation, followed a by a flashing “End” label.

4) After 10 seconds the instrument will restart working with the new parameters.

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5) Remove the HOT-KEY.

Page 4

14. DISPLAY MESSAGES

Mess.

Cause

Outputs

“nA”

None of digital inputs configured as CCL are

activated

Valve closed

“PF”

The Ped time is elapsed and the regulation is stopped

Valve closed after PEd. There is a probe error

“P1”

Temperature probe fault

According to PEo and PEd.

“P2”

Pressure transducer fault

According to PEo and PEd.

“HSH”

High superheat alarm

By PI

“LSH”

Low superheat alarm

Valve Closed

“LPL”

Low pressure limit

see LPL parameter

“MoP”

Maximum Operating Pressure

see dML parameter

“LoP”

Lowest Operating Pressure

see dML parameter

“StF”

Start Function enabled

see SFd parameter

“StP”

Regulation stop caused by Std and Sti

Valve closed

“EE”

Memory error

Label

Description

Range

Default

Level

Set

SH set point in chiller mode

0,0÷24,0°C; 0÷43°F

6.0

Set

SH set point in heat pump mode

0,0÷24,0°C; 0÷43°F

6.0

FtY

Kind of gas

R22; 134; 404; 407;

410; 507; Co2

407

Pr1

Peo

Probe Error opening percentage

0 to 100 %

Pr1

Ped

Probe Error delay before stopping regulation

0 to 239 s; on

Pr1

tEU

Type of Stepper motor

uP; bP

Pr1

tEP

Automatic Valve configuration

0 to 10

Pr1

HFS

Kind of driving

HAF; FUL

FUL

Pr1

LSt

Minimum number of steps

0; USt (*10)

Pr1

USt

Maximum number of steps

LSt to 800 (*10)

Pr1

ESt

Extra steps in closing phase

0 to 255 (*10)

Pr1

Step rate

10 to 600 step/s

Pr1

CPP

Current per phase (only bipolar valves)

0 to 100 (*10mA)

Pr1

CHd

Holding current per phase (only bipolar valves)

0 to 100 (*10mA)

Pr1

oPE

Start opening Percentage

0 to 100 %

Pr1

SFd

Start Function duration

0.0 to 42min 00s, res. 10s

1.3

Pr1

MnF

Maximum opening percentage

0 to 100 %

100

Pr1

FoP

Forced Opening time-out

0 to 100 %; nU

Pr1

PI PARAMETERS (trained staff)

Proportional band, chiller mode

[0.1 to 50.0°C]

[1 to 90°F]

10.0

Pr1

Band Offset

[-12.0 to 12.0°C]

[-21 to 21°F]

0.0

Pr1

inC

Integration time chiller mode

0 to 255 s

120

Pr1

dFc

Derivative time chiller mode

0 to 255 s

Pr1

Pb2

Proportional band. Heat pump mode

[0.1 to 50.0°C]

[1 to 90°F]

10.0

Pr1

It2

Integration time Heat pump mode

0 to 255 s

120

Pr1

dt2

Derivative time Heat pump mode

0 to 255 s

Pr1

Dead band width

[0.1 to 50.0°C]

[1 to 90°F]

5.0

Pr1

PROBE PARAMETERS

tPP

Type of pressure transducer

420; 5V;

420

Pr1

PA4

Probe value at 4mA or at 0V (related to PrM parameter)

[-1.0 to P20 bar]

[-14 to P20 psi]

Pr1

P20

Probe value at 20mA or at 5V (related to PrM parameter)

[ PA4 to 50.0 bar]

[PA4 to 725 psi]

Pr1

oPr

Pressure probe calibration

[-12.0 to 12.0 bar]

[-174 to 174 psi]

Pr1

ttE

type of temperature probe

PT1000; ntC

Ntc

Pr1

otE

Temperature probe calibration

[-12.0 to 12.0°C]

[-21 to 21°F]

0.0

Pr1

DIGITAL INPUTS

i1P

Free of voltage digital input polarity

CL; oP

Pr1

i1F

Free of voltage digital input function

CCL; rL

CCL

Pr1

d1d

Digital input 1 (free of voltage) activation delay

0 to 255 min

Pr1

i2P

Main voltage digital input polarity

CL; oP

Pr1

i2F

Main voltage digital input function

CCL, rL

CCL

Pr1

d2d

Digital input 2 (Main voltage) activation delay

0 to 255 min

Pr1

ALARMS

dAo

Alarm delay after restarting regulation

0.0 to 42min 00s, res. 10s

10.0

Pr1

tdA

Type of alarm signalled by relay

ALL; SH; PrE; Di

ALL

Pr1

LPL

Lower pressure limit for superheat regulation (related to PrM parameter)

[PA4 to P20 bar]

[PA4 to P20 psi]

Pr1

MoP

Maximum operating pressure threshold (related to PrM parameter)

[LoP to P20 bar] [LoP to P20 psi]

0.5

Pr1

LoP

Minimum suction pressure limit (related to PrM parameter)

[PA4 to MoP bar] [PA4 to MoP psi]

11.0

Pr1

PHy

Pressure alarm Hysteresis

[0.1 to 5.0 bar]

[1 to 72 psi]

0.5

Pr1

dML

delta MoP-LoP

0 to 100%

0.1

Pr1

MSH

Maximum superheat alarm

[LSH to 80.0°C]

[LSH to 176°F]

Pr1

LSH

Lowest superheat alarm

[0.0 to MSH°C]

[0 to MSH°F]

80.0

Pr1

SHY

Superheat hysteresis

[0.1 to 25.5°C]

[1 to 77°F]

2.5

Pr1

SHd

Superheat alarm activation delay

0 to 255 s

0.1

Pr1

FrC

Fast-Recovery Constant

0 to 100 s

120

Pr1

DISPLAY

Pr1

Lod

Local display

SH; PEr; P1; P2

Pr1

Temperature measurement units

°C; °F

°C

Pr1

PMu

Pressure measurement unit

bAr; PSi

bar

Pr1

rES

Resolution (only °C)

dE; in

Pr1

PrM

Type of pressure (Absolute / relative)

rEL; AbS

Rel

Pr1

CLP

Cooling call percentage

Read only

---

Pr1

tP1

Temperature probe value

Read only

---

Pr1

PPr

Pressure probe value

Read only

---

Pr1

tP2

Temperature converted from pressure probe

Read only

---

Pr1

oPP

Acutal Opening percentage

Read only

---

Pr1

d1S

Free of voltage digital input state

Read only

---

Pr1

d2S

Main voltage digital input state

Read only

---

Pr1

Mod

Modbus type

Std; AdU

---

Pr1

Adr

Serial address

1 to 247

Pr1

Ptb

Parameters map

- - -

Pr1

rEL

Release software

- - -

1.2

Pr1

Pr2

Second level menu

- - -

---

14.1 ALARM RECOVERY

Probe alarms “P1”, “P2” start few seconds after the fault in the probe; they automatically stop few seconds after the probe restarts normal operation. Check connections before replacing the probe. Max. And min. Alarms “HSH”, “LSH”, “MoP” and “LoP” automatically stop as soon as the variable returns to normal values. The instrument is provided with an internal check verifying memory integrity. Alarm “EE” will flash when a failure in the internal memory is detected. In such case call the service.

15. TECHNICAL DATA

Housing: self extinguishing ABS. Case: 4 DIN modules 70x135mm with male and female connectors; depth 60mm. Mounting: DIN RAIL mounted in an omega (3) din rail. Protection: IP20. Connections: pluggable screw terminal block  2.5 mm2wiring. Power supply: 24Vac/dc ±10%. Power absorption: depending on connected valve 20VA max. Display: three digits with icons, red LEDs, height 14.2 mm. Inputs: 1 temperature probe:

PT1000 probe: -50 to 110°C (-58 to 230°F). NTC probe: -40 to 110°C (-40 to 230°F).

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

Digital inputs: Digital input 1 (15-13): free of voltage.

Digital input 2 (8-9): free of voltage. Outputs for valve: bipolar or unipolar valves. Data storage: on the non-volatile memory (EEPROM). Kind of action: 1B. Pollution degree: normal. Software Class: A. Operating temperature: 0 to 55°C (32 to 131°F). Storage temperature: -25 to 60°C (-13 to 140°F). Relative humidity: 20 to 85% (no condensing). Resolution: 0.1°C or 1°F. Precision a 25°C (77°F): ±0.7°C ±1digit.

16. STANDARD VALUES

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