Emerson EC3-X33 - User Manual

Operating instruction
EC3-X33 Superheat Controller and ECD-002
Keypad / Display Unit
Emerson Climate Technologies GmbH www.emersonclimate.eu
Am Borsigturm 31 I 13507 Berlin I Germany Date: 03.04.2017 EC3-X33_OI_ML_R12_865009.docx
General information:
EC3-X33 is a universal superheat controller in conjunction with EMERSON
Electrical Control Valves EX4...EX8 and FX5…FX9.
Note: This document contains short form instructions for experienced users.
Safety instructions:
• Read operating instructions thoroughly. Failure to comply can result in
device failure, system damage or personal injury.
• According to EN 13313 it is intended for use by persons having the
appropriate knowledge and skill.
• Do not exceed the specified maximum ratings for pressure, temperature,
voltage and current.
• Before installation or service disconnect all voltages from system and device.
• Do not operate system before all cable connections are completed.
• Entire electrical connections have to comply with local regulations.
Note: The EC3-X33 series contains a VRLA battery = valve regulated rechargeable
lead-acid battery. The battery must NOT be disposed of with other commercial
waste. Instead, it is the user’s responsibility to pass it to a designated collection
point for the safe recycling of batteries (harmonized directive 2012/19/EU). For
further information contact your local environmental recycling center.
Mounting position:
The EC3-X33 is designed to be mounted onto a standard DIN rail. Mounting
position: on vertical walls, with stepper motor connector on top side only.
Mounting of ECD-002:
• ECD-002 can be installed at any time also during operation.
• ECD-002 can be mounted in panels with
71x29 mm cutout.
• Push controller into panel cut-out.(1)
• Make sure that mounting lugs are flush with
outside of controller housing
• Insert Allen key into front panel holes and turn
clockwise. Mounting lugs will turn and gradually
move towards panel (2)
•
Turn Allen key until mounting lug barely touches
panel. Then move other mounting lug to the same
position (3)
• Tighten both sides very carefully until keypad is
secured. Do not over tighten as mounting lugs
will break easily.
Electrical Installation:
• Refer to the electrical wiring diagram for electrical connections.
• Do not apply voltage to the controller before completion of wiring.
• Ground the metal housing with a 6.3 mm spade connector.
• Keep controller and sensor wiring well separated from mains wiring. Minimum
recommended distance 30 mm.
• Use a class II category transformer for 24 VAC power supply. Do not ground the
24 VAC lines. We recommend using individual transformers for EC3
controller(s) and for 3
rd
party controllers to avoid possible interference or
grounding problems in the power supply.
• Connecting any EC3 inputs to mains voltage will permanently damage the EC3.
• The use of the relay is essential to protect the system in case of power failure if
the communications interface or the ECD-002 are not utilized.
• If the output relay is not utilized, the user must ensure appropriate safety pre-
cautions are in place to protect the system against damage caused by a power
failure.
• In order to provide system protection in the event of power loss, it is
recommended to change the battery annually.
Digital input status is dependent to operation of compressor/thermostat
Commander
Operating condition
Digital input (I)
Compressor
Compressor starts
Closed / 24 V (Start)
Compressor stops
Open / 0 V (Stop)
Thermostat
Demand (compressor must be ON)
Closed / 24 V (Start)
No demand
Open / 0 V (Stop)
Wiring:
A: White wire B: Black wire C: Blue wire D: Brown wire
E: Plug cable assembly EXV-Mxx for connection to EX4…EX8 and FX5…FX9
G: Remote control panel, system controller
H: Alarm relay, dry contact. Relay coil is not energized at alarm or power off.
I: Digital input (0V/open = Stop; 24V/closed = Start)
J: Transformer Class II, 24 VAC secondary / 25 VA
K: Third party controller (can use the analog output signal from EC3)
Preparation for Start-up:
• Vacuum the entire refrigeration system
• Note: EMERSON Electrical Control Valves EX4…EX8 and FX5…FX9 are
delivered at half open position. Do not charge system before closure of valve.
• Apply supply voltage 24 V to EC3 while the digital input is 0 V (open). The
valve will be driven to close position.
• After closure of valve, start to charge the system with refrigerant.
• Start the system and check the superheat and operating conditions.
!

Summary

General Information and Safety

General Information

Details EC3-X33 controller's application with EX4-EX8 and FX5-FX9 valves.

Safety Instructions

Provides critical safety guidelines for operation, installation, and handling to prevent injury or damage.

Battery Disposal Note

Instructs users on the proper disposal and recycling of VRLA batteries.

Mounting and Electrical Installation

Mounting Position

Specifies the EC3-X33 mounting orientation on a DIN rail.

ECD-002 Mounting

Details the procedure for mounting the ECD-002 keypad/display unit into a panel.

Electrical Installation Guidelines

Covers wiring connections, grounding, and power supply requirements for safe installation.

System Configuration and Setup

Main Parameters Setup

Guides on setting essential parameters like refrigerant type, pressure sensor, and valve type.

Optional Parameters

Lists and explains optional parameters for system optimization.

Parameter Modification Procedure

Step-by-step instructions on how to access and change controller parameters using the ECD-002.

Factory Reset Procedure

Instructions on how to reset all controller parameters to their factory default settings.

Control Valve Start-up Behavior

Explains the valve's opening behavior based on specific parameters.

Troubleshooting and Operation

Error and Alarm Handling

Details alarm codes, descriptions, and required actions for troubleshooting.

System Operating Conditions Check

Guidance on checking system status and data display.

Service and Troubleshooting

Provides common symptoms, causes, and actions for resolving operational issues.

Technical Data and Dimensions

Technical Specifications

Lists electrical, input/output, and operational specifications of the EC3-X33 controller.

Device Dimensions

Provides physical dimensions and cutout information for the EC3-X33 and ECD-002 units.

Emerson EC3-X33 Specifications

General

Model	EC3-X33
Input Voltage	24 VDC
Number of Inputs	16
Number of Outputs	16
Series	EC3
Enclosure Rating	IP20
Communication Protocols	Modbus RTU, Modbus TCP
CPU	32-bit
Operating Temperature	-20°C to 60°C
Type	Programmable Logic Controller (PLC)