Emerson Dixell XEV20D User manual

Document Part # 026-4283 Rev 0 Page 1 of 8
©2022 Emerson Digital Cold Chain, Inc. This document may be photocopied for personal use.
Visit our website at www.climate.emerson.com for the latest technical documentation and updates.
Contents
1 General Warnings .....................................................................................................................2
2 General Description ..................................................................................................................2
3 Absolute Maximum Power ........................................................................................................3
4 Wiring Diagram ........................................................................................................................3
4.1 One Valve Configuration ........................................................................................................... 3
4.2 Two Valves Configuration .......................................................................................................... 4
4.3 IPro Connections ....................................................................................................................... 4
5 Valve Connections .....................................................................................................................5
6 Serial Line - CanBus ...................................................................................................................6
7 LEDs Meaning ...........................................................................................................................7
8 Technical Data ..........................................................................................................................8
Quick Reference Guide
Stepper Valve Actuator XEV20D

Document Part # 026-4283 Rev 0 Page 2 of 8
©2022 Emerson Digital Cold Chain, Inc. This document may be photocopied for personal use.
Visit our website at www.climate.emerson.com for the latest technical documentation and updates.
1 General Warnings
PLEASE READ BEFORE USING THIS MANUAL
SAFETY PRECAUTIONS
2 General Description
XEV20D is a stepper valve actuator intended either for bipolar stepper valves or unipolar stepper valves. This
device has been used with ISaGRAF® environment and with programmable devices of iPRO series or in
combination with instruments of i-CHILL 200CX series.
The maximum configuration of hardware is equipped with:
• 2 configurable valve outputs to drive bipolar or unipolar valves
• Pb1/Pb2 configurable analog inputs: NTC/PTC/Pt1000
• Pb3/Pb4 configurable analog inputs: 4 to20mA/0 to5V/Pt1000
• CanBus serial line
• LAN to communicate with instrument of the same series or devices of i-CHILL200CX series
• 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.
• Check if 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.p.A.” 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.

Document Part # 026-4283 Rev 0 Page 3 of 8
©2022 Emerson Digital Cold Chain, Inc. This document may be photocopied for personal use.
Visit our website at www.climate.emerson.com for the latest technical documentation and updates.
3 Absolute Maximum Power
XEV20D 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. Select the current transformer depending on application
seeing the following table, for each kind of driving and functioning is reported the Dixell transformer to use.
NOTE: The electrical power absorption of the valve can be unrelated to refrigeration power that valve has. Before
using the actuator, please read the technical manual of the valve supplied by the manufacturer and check the
maximum current used to drive the valve in order to verify that they are lower than those indicated below.
4 Wiring Diagram
4.1 One Valve Configuration
CONFIGURATION
ONE VALVE TWO VALVES
Driving Mode Full Step Full Step
Valve Type
Bipolar Valves
(4 wires)
Current 0.9A max
> TF20D
Current 0.9A max for each valve
> TF40D
Unipolar Valves
(5-6 wires)
Current 0.33A max
> TF20D
Current 0.33A max for each valve
> TF20D

Document Part # 026-4283 Rev 0 Page 4 of 8
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4.2 Two Valves Configuration
4.3 IPro Connections

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5 Valve Connections
Pay attention to the following table for a quick reference on the connection mode for valves of different
manufacturers:
4 WIRES VALVES (BIPOLAR)
5-6 WIRES VALVES (UNIPOLAR)
Connection Numbering ALCO EX* ALCO EX5/6 SPORLAN SEI-SHE DANFOSS ETS
4 White Blue White Black
2 Yellow Brown Black White
3 Brown Black Red Red
1 Green White Green Green
5 - Common ---- ---- ---- ----
Connection Numbering SPORLAN SAGINOMIYA
4 Orange Orange
2 Red Red
3 Yellow Yellow
1 Black Black
5 - Common Gray Gray
Figure 5-1 - XEV20D Device

Document Part # 026-4283 Rev 0 Page 6 of 8
©2022 Emerson Digital Cold Chain, Inc. This document may be photocopied for personal use.
Visit our website at www.climate.emerson.com for the latest technical documentation and updates.
6 Serial Line - CanBus
The device can communicate through CanBus serial line only when a correct address is set. The addressing is made
through the dip-switch called Address as you can see in the following drawing:
The following table has to be used to configure ISaGRAF lines to connect the valve actuator.
Figure 6-1 - CanBus Serial Line
Figure 6-2 - CanBus Device
LINE GEN_LINE GEN_AO GEN_AO GEN_AO GEN_A1 GEN_DI
channel number 4 2 7 4 3
line_num CanBus
Number
CanBus
Number
CanBus
Number
CanBus
Number
CanBus
Number
CanBus
Number
name CAN
par_1 CanBus
Number
CanBus
Number
CanBus
Number
CanBus
Number
CanBus
Number
CanBus
Number
par_2 CAN node
address
16 17 26 1 31
par_3 10
I/O 1
EVV_StepsOutp
ut Valve 1
EEV_OutRateV
alve 1
EVV_ProbeTCo
nfiguration
Valve 1
EVV_Temperat
ure Valve 1
EVV_ValvePosi
tion Valve 1
The address is set in binary mode.
Every selector has a different weight, in figure
nearby the address is:
1 x 1 = 1
2 x 0 = 0
4 x 1 = 4
8 x 1 = 8
1+4+8=13

Document Part # 026-4283 Rev 0 Page 7 of 8
©2022 Emerson Digital Cold Chain, Inc. This document may be photocopied for personal use.
Visit our website at www.climate.emerson.com for the latest technical documentation and updates.
7 LEDs Meaning
The following table has to be used to configure ISaGRAF lines to connect the valve actuator.
I/O 2
EVV_StepsOutp
ut Valve 2
EEV_OutRateV
alve 2
EVV_ProbeTCo
nfiguration
Valve 2
EVV_Temperat
ure Valve 2
EVV_Valve Posi
tion Valve 2
I/O 3
EVV_Steps
MaxValve 1
EVV_ProbePCo
nfiguration
Valve 1
EVV_Pressure
Valve 1
I/O 4
EVV_Steps
MaxValve 2
EVV_ProbePCo
nfiguration
Valve 2
EVV_Pressure
Valve 2
I/O 5
EVV_OutPhasC
urrent Valve 1
I/O 6
EVV_OutPhasC
urrent Valve 2
I/O 7
EVV_OutValveC
onfiguration
I/O 8
LED MODE MEANING
PWR ON On The device is correctly powered
ALARM On An alarm is present
TX/RX Blinking CanBus or LAN activity, communication activated
TX/RX On No link
OPEN V1 Blinking Valve 1 is opening
OPEN V1 On Valve 1 completely opened
CLOSE V1 Blinking Valve 1 is closing
CLOSE V1 On Valve 1 completely closed
OPEN V2 Blinking Valve 2 is opening
OPEN V2 On Valve 2 completely opened
CLOSE V2 Blinking Valve 2 is closing
CLOSE V2 On Valve 2 completely closed
LINE GEN_LINE GEN_AO GEN_AO GEN_AO GEN_A1 GEN_DI

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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 reserves the right to modify the designs or specifications of such products at any time without notice. Responsibility for proper selection, use and maintenance of any product
remains solely with the purchaser and end-user. ©2022 Emerson is a trademark of Emerson Electric Co.
Document Part # 026-4283 Rev 0 Page 8 of 8
8 Technical Data
Case 4 DIN
Connectors Disconnectable terminal block ≤ 2,5 mm2 for valve outputs and minifit
connector for low voltage section
Power Supply 24Vac/dc; Absorption: 40VA max.
Probe Inputs 2 configurable as NTC/PTC/Pt1000
2 configurable as NTC/PTC/Pt1000/4 to 20mA/ to 5V
Valve Output(s) See table on page 3
Serial Connection CanBus and LAN for iCHILL200CX
Data Storing Non volatile memory (EEPROM)
Kind of Action 1B; Pollution Grade: 2; Software Class: A
Rated Impulsive Voltage 2500V; Over-voltage Category: II
Operating Temperature 10 to 60 °C; Storage Temperature: -30 to 85 °C
Relative Humidity 20 to 85% (no condensing)
Measuring and Regulation Range
PTC Probe: -50 to150°C
NTC Probe: -40 to110°C
Pt1000 Probe: -50 to 100°C
Pressure Transducer: -1.0 to 50.0 Bar
Resolution 0,1°C or 1 °F; Precisione@ 25°C: ±0,1 °C ±1 digit