Emerson XEV22D Manuel utilisateur

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: 770-425-2724

Fax: 770-425-9319

Table of Contents • v

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. POWERING 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

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

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

General Warning Introduction • 1

1 Introduction

1.1. General Warning

Please read the following safety precautions and

warnings before using this manual:

2 Overview

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 flu-

id that runs into the refrigeration unit to obtain opti-

mized 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) pres-

sure 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 applica-

tions. The controller can also have two (2) configu-

rable digital inputs, the first one is free of voltage and

the other one is at high voltage, to simplify connec-

tions 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 con-

troller 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

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 can-

not 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 con-

troller only within the operating limits and avoid sud-

den 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 environ-

ments, the use of main filters (our mod. FT1) in paral-

lel with inductive loads could be useful.

Device

Name Dixell Code Emerson

Code

XEV22D XEV22D-1C0F0B

X0JFGAESG3NA-000 318-5001

Table 2-1 - Product Ordering Code

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

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:

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 3-1 - How XEV22D Acts on Cooling Request

Figure 3-2 - XEV22D Wiring Connections

Ordering Code Wiring Guidelines • 3

4 Wiring Guidelines

DEVICE TYPE RETAIL SOLUTIONS

ANALOG TEMP SENSOR

DIGITAL INPUT

BELDEN #8761 #22-2 SHIELDED

Retail Solutions P/N 035-0002

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

Retail Solutions P/N 035-0002

BELDEN #8641 #24-2 SHIELDED

Retail Solutions P/N 135-8641

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

Retail Solutions P/N 135-8771

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

AWG

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

to exceed 30 feet (10 meters).

POWER LOADS AND VALVE Allow a maximum wire size of 14 AWG (2 mm2).

Table 4-1 - Wiring Guidelines

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

5 Mounting and

Powering

The XEV22D is usually mounted by the Refriger-

ation equipment manufacturer. Therefore, the install-

er 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 mois-

ture. Typically, mounting inside the electrical control

panel of a package unit is acceptable.

5.1. Installation

The XEV22D uses a DIN mount installation.

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 de-

vices.

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):

300V

Color: Gray

Table 5-1- XEV22D Enclosure Specification

Table des matières

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