Eliwell EWRC 300 NT Series User manual

EWRC 300/500/5000 NT
Controllers for static and ventilated cold rooms
USER
MANUAL
9MA10258.01
www.eliwell.com

This documentation contains the general description and/or technical characteristics of the product
contained herein. This documentation is not intended and must not be used to determine the
appropriateness or reliability of these products related to the user’s specific applications. Every user or
integration specialist must perform their own complete and appropriate risk assessment, evaluations and
tests on the products relating to the specific use or application.
Schneider Electric nor any of its associates or branches shall be held liable or prosecutable for the
improper use of the information contained herein. Users may send us comments and suggestions to
improve or correct this publication.
You hereby accept to not reproduce, other than for personal, non-commercial use, all or part of this
document in any form without the written authorisation of Eliwell. You also accept to not create any
hypertext links to this document or the relative contents. Eliwell shall not grant any rights or licence for
personal and non-commercial use of the document and the relative contents, with the exception of a non-
exclusive licence to consult the material “as-is”, at your own risk. All other rights are reserved.
During the installation and use of this product, you must comply with local, national and international
safety laws. For safety reasons and to ensure compliance with the data of the documented system,
component repairs must be performed exclusively by the manufacturer.
When the devices are used for applications with technical safety requirements, comply with the most
relevant instructions. Improper use of Eliwell software (or any other approved software) with Eliwell
hardware products may constitute a risk for personal safety and many cause damage to the equipment.
Failure to comply with these instructions may constitute a risk for personal safety and may cause damage
to the equipment.
© 2018 Eliwell. All rights reserved.
29MA10258.01 07/2018

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1. INTRODUCTION ............................................................................................................9
1.1. GENERAL DESCRIPTION...................................................................................................................................9
1.2. MODELS ...............................................................................................................................................................9
2. TECHNICAL SPECIFICATIONS ............................................................................ 10
2.1. TECHNICAL DATA
(EN 60730-2-9:2010, EN 61439-1:2011 / 61439-2:2011 / EN 60204-1:2006)........................................10
2.2. ELECTRICAL SPECIFICATIONS.........................................................................................................................10
2.3. FURTHER INFORMATION..................................................................................................................................11
2.3.1. INPUT CHARACTERISTICS .............................................................................................................................................................11
2.3.2. OUTPUT CHARACTERISTICS.........................................................................................................................................................11
2.3.3. MECHANICAL CHARACTERISTICS ..............................................................................................................................................12
3. MECHANICAL INSTALLATION ............................................................................ 13
3.5. INSTALLATION PROCEDURE ...........................................................................................................................15
4. ELECTRICAL CONNECTIONS.............................................................................. 20
4.1.1. WIRING GUIDELINES ......................................................................................................................................................................20
4.1.2. RULES FOR SCREW-TYPE TERMINAL BOARDS .........................................................................................................................21
4.1.3. ANALOGUE INPUTS-PROBES .......................................................................................................................................................22
4.1.4. SERIAL CONNECTIONS..................................................................................................................................................................23
4.1.5. RS-485 CONNECTION ...................................................................................................................................................................23
4.1.6. TTL CONNECTION .........................................................................................................................................................................23
4.2. WIRING DIAGRAM ..............................................................................................................................................24
4.2.1. TERMINALS .......................................................................................................................................................................................24
4.3. WIRING DIAGRAM FOR MODELS WITH MAGNETOTHERMAL SWITCH INSTALLED .........................25
4.3.1. TERMINALS .......................................................................................................................................................................................25
5. USER AND START-UP INTERFACE....................................................................... 26
5.1. DISPLAY .................................................................................................................................................................26
5.1.1. KEYS....................................................................................................................................................................................................26
5.1.2. ICONS.................................................................................................................................................................................................27
5.1.3. PRELIMINARY CONFIGURATIONS ...............................................................................................................................................28
5.1.4. OPERATION IN DEFAULT CONFIGURATION.............................................................................................................................28
5.1.5. NAVIGATION ....................................................................................................................................................................................29
5.1.6. FUNCTIONS MENU AND KEY-ENABLED FUNCTIONS ...........................................................................................................30
5.1.7. PASSWORDS.....................................................................................................................................................................................31
5.1.8. SETPOINT PROGRAMMING ..........................................................................................................................................................32
5.1.9. VIEWING PROBE VALUES...............................................................................................................................................................33
5.1.10. HOW TO MODIFY THE DATE AND TIME..................................................................................................................................34
5.1.11. DISPLAYING ALARMS ..................................................................................................................................................................35
5.1.12. SYSTEM ALARMS EXAMPLE........................................................................................................................................................36
5.1.13. MODIFYING A PARAMETER .......................................................................................................................................................37
CONTENTS

49MA10258.01 07/2018
6. FUNCTIONS AND REGULATORS ........................................................................ 39
6.1. SETTINGS .............................................................................................................................................................39
6.1.1. PROBE SETTING AND CALIBRATION..........................................................................................................................................39
6.1.2. DISPLAY SETTINGS..........................................................................................................................................................................39
6.2. FUNCTIONS .........................................................................................................................................................40
6.2.1. UPLOAD, DOWNLOAD, FORMAT ................................................................................................................................................40
6.2.2. UNICARD ...........................................................................................................................................................................................41
6.3. BOOT LOADER FIRMWARE ..............................................................................................................................42
6.4. COMPRESSOR .....................................................................................................................................................43
6.4.1. COMPRESSOR CONFIGURATION ...............................................................................................................................................43
6.4.2. SECOND COMPRESSOR CONFIGURATION .............................................................................................................................43
6.4.3. COMPRESSOR OPERATING CONDITIONS................................................................................................................................43
6.5. COMPRESSOR/GENERAL PROTECTIONS ....................................................................................................44
6.5.1. COMPRESSOR SAFETY TIMINGS .................................................................................................................................................45
6.6. DEFROST/DRIPPING...........................................................................................................................................46
6.6.1. DEFROST TYPE AND ACTIVATION...............................................................................................................................................46
6.6.2. AUTOMATIC DEFROSTING ...........................................................................................................................................................47
6.6.3. MANUAL DEFROST .........................................................................................................................................................................47
6.6.4. EXTERNAL DEFROST ......................................................................................................................................................................48
6.6.5. DEFROST WITH REMOTE START/STOP.......................................................................................................................................49
6.7. DEFROST MODE .................................................................................................................................................50
6.7.1. DEFROST WITH ELECTRIC HEATERS...........................................................................................................................................50
6.7.2. INVERSE DEFROST ..........................................................................................................................................................................51
6.7.3. DOUBLE EVAPORATOR DEFROST...............................................................................................................................................52
6.8. EVAPORATOR FANS...........................................................................................................................................54
6.8.1. EVAPORATOR FAN OPERATING CONDITIONS........................................................................................................................54
6.8.2. FAN OPERATION IN TEMPERATURE CONTROL MODE.........................................................................................................55
6.8.3. FAN OPERATION IN DUTY-CYCLE MODE..................................................................................................................................56
6.8.4. FAN OPERATION IN DEFROST .....................................................................................................................................................57
6.8.5. FAN FUNCTION DURING DRIPPING ...........................................................................................................................................58
6.8.6. POST-VENTILATION ........................................................................................................................................................................58
6.9. DEEP COOLING CYCLE - DCC.........................................................................................................................59
6.10. PREHEAT .............................................................................................................................................................59
6.11. PRESSURE SWITCH...........................................................................................................................................60
6.11.1. AUXILIARY OUTPUT (AUX/LIGHT)..............................................................................................................................................61
6.12. DOOR/EXTERNAL ALARM MANAGEMENT...............................................................................................62
6.13. DEMISTING HEATERS (FRAME HEATERS)...................................................................................................64
6.14. CONDENSER FANS..........................................................................................................................................65
6.15. STAND-BY...........................................................................................................................................................66
6.16. PUMP DOWN.....................................................................................................................................................66
6.16.1. SERVICE STOPPAGE......................................................................................................................................................................66

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7. PARAMETERS ...................................................................................................... 67
7.1. HOW TO MODIFY THE USER PARAMETERS ................................................................................................67
7.2. HOW TO EDIT THE INSTALLER PARAMETERS..............................................................................................67
7.3. PARAMETER TABLE ............................................................................................................................................68
7.3.1. PARAMETER H60..............................................................................................................................................................................78
8. ALARMS ............................................................................................................... 79
8.1. ALARMS AND SIGNALS TABLE ........................................................................................................................79
8.2. ALARM CAUSE/EFFECT TABLE .......................................................................................................................80
8.3. DESCRIPTION OF ALARMS...............................................................................................................................82
8.3.1. PROBE ALARM..................................................................................................................................................................................82
8.3.2. MINIMUM AND MAXIMUM TEMPERATURE ALARM ................................................................................................................83
8.3.3. END OF DEFROST DUE TO TIMEOUT ALARM ..........................................................................................................................84
8.3.4. EXTERNAL ALARM...........................................................................................................................................................................85
8.3.5. DOOR OPEN ALARM ......................................................................................................................................................................85
8.3.6. PRESSURE SWITCH INPUT ALARM...............................................................................................................................................86
8.3.7. PANIC ALARM ..................................................................................................................................................................................87
8.3.8. LEAK DETECTOR ALARM...............................................................................................................................................................87
9. MODBUS MSK 554 FUNCTIONS AND RESOURCES ......................................... 89
9.3.1. DATA FORMAT (RTU).......................................................................................................................................................................89
9.3.2. NETWORK .........................................................................................................................................................................................89
9.3.3. MODBUS COMMANDS AVAILBLE AND DATA AREAS............................................................................................................90
9.3.4. ADDRESS CONFIGURATION.........................................................................................................................................................90
9.3.5. PARAMETER VISIBILITY AND VALUES..........................................................................................................................................91
9.3.6. MODBUS TABLES ............................................................................................................................................................................91
9.3.7. PARAMETER/VISIBILITY TABLE......................................................................................................................................................93
9.3.8. PARAMETER/VISBILITY H60 TABLE ..............................................................................................................................................98
9.3.9. FOLDER VISIBILITY TABLE ..............................................................................................................................................................100
9.3.10. CLIENT TABLE.................................................................................................................................................................................100
10. ADVANCED FUNCTIONS - NIGHT AND DAY................................................... 102
10.1. DAY/NIGHT REGULATOR OPERATION .......................................................................................................102
10.2. OPERATION WITH DEFROST GROUP..........................................................................................................103
10.3. DAY/NIGHT REGULATOR DURING A BLACKOUT.....................................................................................103
10.4. OPENING FOLDER NAD - DAY/NIGHT........................................................................................................104
11. ADVANCED FUNCTIONS - HACCP .................................................................. 105
11.1. DISPLAYING HACCP ALARMS .......................................................................................................................106

69MA10258.01 07/2018
Important information
Read these instructions carefully and visually inspect the equipment to familiarise yourself with the device before attempting
to install it, put it into operation, overhaul or service it. The following warning messages may appear anywhere in this
documentation or on the equipment to warn of potential dangers or to call attention to information that can clarify or simplify
a procedure.
The addition of this symbol to a danger warning label indicates the existence of an electrical danger that could
result in personal injury should the user fail to follow the instructions.
This is the safety warning symbol. It is used to warn the user of the potential dangers of personal injury.
Observe all the safety warnings that follow this symbol to avoid the risk of serious injury or death.
DANGER
DANGER indicates a dangerous situation that, unless avoided, will result in death or serious injury.
WARNING
WARNING indicates a potentially dangerous situation which, if not avoided, could result in death or serious injury.
CAUTION
CAUTION indicates a potentially dangerous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
NOTICE used in reference to procedures not associated with physical injuries.
SAFETY INFORMATION

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NB
The electrical panel (device) must be installed and repaired only by qualified staff. Neither Schneider Electric nor Eliwell
accept any responsibility for any consequences resulting from the use of this material.
A qualified person is someone who has specific skills and knowledge regarding the structure and the operation of electrical
equipment and who has received safety training on how to avoid the inherent dangers.
Product related information
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
• Disconnect all power from all equipment including connected devices prior to removing any covers or doors, or
installing or removing any accessories, hardware, cables or wires.
• Always use a properly rated voltage sensing device to confirm the power is off where and when indicated.
• Before powering the device back up, fit back and fix all the covers, hardware components and wiring.
• Check the earthing connections on all earthed devices.
• Use only the specified voltage when operating this equipment and any associated products.
• Comply with all standards regarding accident protection and local applicable safety directives.
Failure to follow these instructions will result in death or serious injury.
This equipment is designed to operate outside all hazardous locations and is not to be used in applications which generate
(or could potentially generate) hazardous environments. Install this equipment only in areas and applications known to be
free from dangerous atmospheres at all times.
DANGER
POTENTIAL FOR EXPLOSION
• Install and use this equipment in non-hazardous locations only.
• Do not install or use this equipment in applications which could generate hazardous atmospheres, such as
applications which use flammable refrigerants.
Failure to follow these instructions will result in death or serious injury.
For information regarding the use of control equipment in applications capable of generating hazardous materials, please
contact the relevant national regulatory bodies or certifying authorities.
WARNING
UNINTENDED EQUIPMENT OPERATION
• The equipment signal cables (probes, digital inputs, communication, and the relative power supplies) must be laid
separately from the power cables.
• Every end application of this device must be tested individually and completely in order to check its proper
operation before putting it in service.
Failure to follow these instructions can result in death, serious injury, or equipment damage.

89MA10258.01 07/2018
Permitted use
The device must be installed and used in accordance with the instructions provided. In particular, parts carrying dangerous
voltages must not be accessible under normal conditions.
It must be adequately protected from water and dust with regard to the application, and must only be accessible using tools
or a keyed locking mechanism (with the exception of the front panel).
The device is suitable for use in household refrigeration appliances and/or similar equipment and has been tested in
accordance with the harmonized European reference standards.
Prohibited use
Any use other than that expressly permitted is prohibited.
The relay contacts provided are mechanical and subject to failure; any protection devices required by product standards, or
suggested by good practice in view of obvious safety requirements, must be installed externally of the device.
Liability and residual risks
The liability of Schneider Electric and Eliwell is limited to the correct and professional use of the product according to the
directives referred to herein and in the other supporting documents, and does not cover any damage (including but not limited
to) the following causes:
• unspecified installation/use and, in particular, in contravention of the safety requirements of the legislation in force in the
country of installation and/or specified in this document;
• use on equipment which does not provide adequate protection against electrocution, water and dust in the actual
installation conditions;
• use on devices which allow access to dangerous parts without the aid of a keyed or tooled locking mechanism;
• tampering with and/or modification of the product;
• installation/use on equipment that does not comply with the regulations in force in the country of installation.
Disposal
The equipment (or product) must be subjected to separate waste collection in compliance with the local legislation on
waste disposal.
Date of production
The date of production is shown on the device label, indicating the week and year of production (WW-YY).

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1.1. GENERAL DESCRIPTION
The Coldface EWRC 300/500/5000 NT series controls the temperature of a static or ventilated cold room. The instrument
controls positive or negative cold rooms and is capable of managing a double evaporator and condenser fan.
Coldface has 3 or 5 configurable relays, depending on the model, and 2(3) configurable digital inputs for door switches or
other devices. Models are available with clock with yearly calendar and HACCP event logging.
The instrument can be connected to TelevisSystem / Modbus via the RS-485 plug-in module (optional).
The container lets you install one or more electromechanical devices, depending on the model.
This summary document contains basic information about the standard
EWRC 300/500/5000 NT models. For further information and custom configurations, refer to the complete user manual
code 9MA0258, available to download from the website www.eliwell.com.
1.2. MODELS
• EWRC 300 NT - Versions with 3 configurable relays for controlling al the accessory loads in the room.
• EWRC 500 NT - Versions with 5 configurable relays for controlling all the accessory loads in the room.
• EWRC 500 NT HACCP - Versions with 5 configurable relays for controlling all the accessory loads in the room, HACCP
function with clock and yearly calendar.
• EWRC 500 NT 4DIN - Versions with 5 configurable relays for controlling all the accessory loads in the room, plus door
for installation of magnetothermal switch or accessories on a DIN rail.
• EWRC 500 NT 4DIN HACCP - Versions with 5 configurable relays for controlling all the accessory loads in the room,
HACCP function with clock and yearly calendar, plus door for installation of magnetothermal switch or accessories on a
DIN rail.
• EWRC 500 NT BREAKER - Versions with 5 configurable relays for controlling all the accessory loads in the room, plus
door and magnetothermal switch installed.
• EWRC 500 NT 4DIN BREAKER HACCP - Versions with 5 configurable relays for controlling all the accessory loads in
the room, HACCP function with clock and yearly calendar, plus door and magnetothermal switch installed.
• EWRC 5000 NT HACCP - Version with larger container, with 5 configurable relays for controlling all the accessory loads
in the room, HACCP function with clock and yearly calendar, plus door for installation of components on a DIN rail.
1. INTRODUCTION

10 9MA10258.01 07/2018
2. TECHNICAL SPECIFICATIONS
2.1. TECHNICAL DATA
(EN 60730-2-9:2010, EN 61439-1:2011 / 61439-2:2011 / EN 60204-1:2006)
Front panel protection rating IP65
Classification: Electronic automatic control device (not safety device) for stand-alone
installation
Installation: wall
Type of action: 1.B
Pollution class: 2
Panel use: Internal use
Panel type: Fixed panel
Maximum installation site altitude: 2000 m (2187 yd)
Weight: < 2 kg (< 4.41 lb)
Material class: IIIa
Over-voltage category: II
Nominal pulse voltage: 2500 Vac
Operating temperature: -5…50°C (23°F...122°F) (EN 60730-2-9:2010)
Storage temperature: -20…85°C (-20°F...185°F)
Operating humidity: 10…90% non-condensing
Storage humidity: 10…90% non-condensing
Power supply: 230 Vac ±10 % 50/60 Hz
Power consumption: 11 VA max
Magnetothermal switch: EWRC 500 BREAKER: Two-pole (2P)
Control: EWRC NT electronic controller
Connection: device on external flexible cable, Y type connection
Digital outputs (relay): refer to the label on the device
Fire resistance category: D
Software class: A
Ball test temperature: 100°C (212°F)
Clock backup: Up to four days in the absence of an external power supply.
(HACCP models only)
2.2. ELECTRICAL SPECIFICATIONS
Rated voltage (Un): 230 Vac
Rated operating voltage (Ue): 230 Vac
Rated insulation voltage (Ui): 230 Vac
Rated impulse withstand voltage (Uimp): EWRC 500 BREAKER (1) : 4 kV (EN 61439-2:2011)
Rated panel current (InA): EWRC 500 BREAKER (1): 16 A (EN 61439-2:2011)
Rated circuit current (InC): EWRC 500 BREAKER (1): 16 A (EN 61439-2:2011)
Conditioned short circuit current (Icc): < 4.5 kA
Rated frequency (fn): 50/60 Hz
(1) EWRC 500 BREAKER RCAS / RCAR

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2.3. FURTHER INFORMATION
2.3.1. INPUT CHARACTERISTICS
Measurement range: NTC: -50.0...110°C (-58°F...230°F); (on 3-digit display with +/- sign)
PTC: -55.0...150°C (-67°F...302°F); (on 3-digit display with +/- sign)
Accuracy: better than 0.5% integral scale + 1 digit
Resolution: 0.1°C (0.1°F)
Buzzer: only on models where this is provided
Analogue inputs: 3(2) configurable NTC/PTC inputs
Digital inputs: 2(3) multi-function, voltage-free digital inputs (DI)
2.3.2. OUTPUT CHARACTERISTICS
RELAY OUTPUTS
MODEL EWRC 300 NT EWRC 500/5000 NT EWRC 500 NT
CODE RCSH
RCAH
RCS

U

RCAU
RCH300

RCSP
RCAP
STANDARD EN60730
max 250 Vac
UL60730
max 240 Vac
EN60730
max 250 Vac
UL60730
max 240 Vac
EN60730
max 250 Vac
UL60730
max 240 Vac
OUT1
12(8) A
12FLA - 72LRA
12(8) A
12FLA - 72LRA
12(8) A
12FLA - 72LRA
OUT2
8 A
8FLA - 48LRA
8 A
8FLA - 48LRA
8 A
8FLA - 48LRA
OUT3 8(4) A
8A resistive
4.9FLA - 29.4LRA 8(4) A 8 A resistive
4.9FLA - 29.4LRA 12(8) A 12FLA - 72LRA
OUT4
-
-
8 A
8FLA - 48LRA
8 A
8FLA - 48LRA
OUT5 - - NO 8(4) A, NC 6(3) A
NO 8 A, NC 6 A resistive
NO 4.9FLA - 29.4LRA NO 8(4) A, NC 6(3) A
NO 8 A, NC 6 A resistive
NO 4.9FLA - 29.4LRA
NOTE. Maximum common flow rate 16 A for models EWRC 500 BREAKER RCA

S

/ RCA

R

Maximum common flow rate 18 A for all other models

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2.3.3. MECHANICAL CHARACTERISTICS
Casing: PC+ABS
Dimensions: EWRC 300/500
front panel 213 x 318 mm, depth 102 mm
EWRC 500 BREAKER
front panel 221 x 318 mm, depth 107 mm
EWRC 5000
front panel 420 x 360 mm, depth 147 mm
Terminals: screw
See “4.1.2. Rules for screw-type terminal boards” page 21
Connectors: TTL for UNICARD / CopyCard / Device Manager connection (via DMI)
Humidity: Operation / Storage: 10...90% RH (non-condensing)
NOTE: The technical specifications stated in this document regarding the measurement (range, accuracy, resolution, etc.)
refer strictly to the instrument and not to any accessories provided, such as the probes.

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3. MECHANICAL INSTALLATION
3.1. Before starting
Before starting to install your system, read this chapter carefully. Caution must be exercised concerning compliance with all
safety information, other electrical requirements or laws which may apply to your machine or process when using this equipment.
WARNING
REGULATORY INCOMPATIBILITY
Make sure that all equipment used and the systems designed comply with all applicable local, regional and national laws.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
3.2. Disconnection from the power supply
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
• Disconnect all power from all equipment including connected devices prior to removing any covers or doors, or
installing or removing any accessories, hardware, cables or wires.
• Always use a properly rated voltage sensing device to confirm the power is off where and when indicated.
• Before powering the device back up, fit back and fix all the covers, hardware components and wiring.
• Check the earthing connections on all earthed devices.
• Use only the specified voltage when operating this equipment and any associated products.
• Comply with all standards regarding accident protection and local applicable safety directives.
Failure to follow these instructions will result in death or serious injury.
3.3. Operating environment
Flammable refrigerant gases
This equipment is designed to operate outside all hazardous locations and is not to be used in applications which generate
(or could potentially generate) hazardous environments. Install this equipment only in areas and applications known to be
free from dangerous atmospheres at all times.
DANGER
POTENTIAL FOR EXPLOSION
• Install and use this equipment in non-hazardous locations only.
• Do not install or use this equipment in applications which could generate hazardous atmospheres, such as
applications which use flammable refrigerants.
Failure to follow these instructions will result in death or serious injury.
For information regarding the use of control equipment in applications capable of generating hazardous materials, please
contact the relevant national regulatory bodies or certifying authorities.

14 9MA10258.01 07/2018
WARNING
UNINTENDED EQUIPMENT OPERATION
Install and use the equipment in compliance with the conditions described in the Technical Specifications chapter.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
3.4. Comments concerning installation
WARNING
UNINTENDED EQUIPMENT OPERATION
• Use appropriate safety interlocks where personnel and/or equipment hazards exist.
• Do not use this equipment in safety-critical machine functions unless the equipment is otherwise designated as
functional safety equipment and conforming to applicable regulations and standards.
• Do not disassemble, repair, or modify this equipment.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
The devices are designed for wall mounting.
When handling the equipment, use caution to avoid damage caused by electrostatic discharge. In particular, the unshielded
connectors and in certain cases the open circuit boards are vulnerable to electrostatic discharge.
WARNING
UNINTENDED EQUIPMENT OPERATION DUE TO ELECTROSTATIC DISCHARGE
• Keep the equipment in the protective packaging until ready for installation.
• The equipment must only be installed in type-approved casing and/or in points that prevent unauthorised access and
provide protection from electrostatic discharge.
• When handling sensitive equipment, use an antistatic bracelet or equivalent earthed protective device against
electrostatic discharge.
• Before handling the equipment, always discharge the static electricity from the body by touching an earthed surface
or type-approved antistatic mat.
Failure to follow these instructions can result in death, serious injury, or equipment damage.

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3.5. INSTALLATION PROCEDURE
NOTE: procedural steps that are common to all models. ONLY the EWRC 5000 model is used as an example.
1) Remove the cover and drill the holes for the cable clamps (at least one for power cables and one for signalling
cables) on the bottom of the panel.
NOTE: for the 300/500 models, use the drilling template provided.
2) Drill the wall fixing holes on the back of the panel, in the areas marked on the back.
321,5 / 12,66
235 / 12,66
mm / in
343 / 13,5
171,5/ 6,75
116/ 4,57
360 / 14,17 87/ 3,42
UM [mm]
in.
A
CD
B
EWRC300/500: distance between holes A-B 116 mm (4.57 in.); holes C-D 87 mm (3.42 in.); holes A-C 235 mm (9.25 in.)
Hinges are available for mounting on special compartments for opening the cover both right and left.
Screw on the respective anchoring screws taking care that the hinges are fitted well and lie flush so that they do not
interfere with the compression of the seal.
3) Optional. Fir the panel.
NOTE: on models 300/500 with front door two more DIN spaces
can be created: open the door with both hands as shown in the
figure, then remove the factory-fitted push-through tabs.

16 9MA10258.01 07/2018
4) Optional. Install the plug-in RS-485 module for
communication with the supervisor.
EWRC 5000 only:
1) Remove the seven screws securing the plastic protecting
the board.
2) Remove the protective element, then use a box cutter to
remove the two terminal covers.
3) Connect the RS-485 plug-in module (optional) using the
specific spacers, then replace the cover and secure it
using the screws.
NOTICE
INOPERABLE DEVICE
Fit the plug-in RS-485 module in the plug-in connector
aligning the four posts with the holes in the control board.
Failure to follow these instructions can result in
equipment damage.
5) Fix the back of the panel to the wall using four screws (not supplied) suited to the wall thickness.
NOTE: TDI20 screw caps (not provided) can be fitted to 300/500 models at the wall mounting points so that the IP
rating is not altered.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
For models with magnetothermal switch, before connecting make sure that switch is in the OFF position.
Failure to follow these instructions will result in death or serious injury.

17
9MA10258.01 07/2018
6) Make the electrical connections referring to the wiring diagrams shown page 24 and page 25. Use suitable
cable/pipe clamps.
NOTE: only models with magnetothermal switch. Connect the switch to the electronic board power supply using the
accessory cable provided in the packaging.
7) Fit the hinges to secure the cover.
EWRC 5000
Place the panel cover on the base making it stick to the
perimeter seal. Then, while holding the cover in place, fit
the two hinges provided into the corresponding holes and
press them until you hear them click as they are locked
into place.
EWRC 300/500
Fit the hinges provided into their housings on the right
or left side of the panel and tighten the corresponding
screws to secure them.
8) Close the cover and secure it with the screws provided.
DANGER
RISK OF ELECTRIC SHOCK, EXPLOSION OR EXPOSURE TO ACCESSIBLE PARTS
The final application must disallow access to parts at hazardous voltage, as the instrument offers no intrinsic
protection against this risk.
Failure to follow these instructions will result in death or serious injury.

18 9MA10258.01 07/2018
9) DIN rail-mounted models with window only. Close access to
inside the panel from the front window using the dedicated
DIN plugs.
For EWRC NT 500 models with the plastic knockout
removed and no internal magnetothermal switch, the end
user is responsible for ensuring that the open parts of the
box are not accessible.
10) EWRC 5000 only. Fit the door: align the front door with the
two hooks at the bottom of the panel and push it towards the
right until you hear it click as it locks into place.
1
2
11) Close the door

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9MA10258.01 07/2018
WARNING
UNINTENDED EQUIPMENT OPERATION
• Place the devices dissipating the most heat in the top of the cabinet and ensure suitable ventilation.
• Do not place this equipment near or above any devices which could cause overheating.
• Install the device in a point that guarantees the minimum distances from all structures and adjacent equipment as
indicated in this document.
• Install all equipment in conformity with the technical specifications given in the respective documentation.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
25
9.84
25
9.84
25
9.84
25
9.84
mm
in.
Fig. 1. Distance valid for all models
WARNING
UNINTENDED EQUIPMENT OPERATION
• Place the devices dissipating the most heat in the top of the cabinet and ensure suitable ventilation.
• Do not place this equipment near or above any devices which could cause overheating.
• Install the device in a point that guarantees the minimum distances from all structures and adjacent equipment as
indicated in this document.
• Install all equipment in conformity with the technical specifications given in the respective documentation.
Failure to follow these instructions can result in death, serious injury, or equipment damage.

20 9MA10258.01 07/2018
4. ELECTRICAL CONNECTIONS
4.1. Wiring practices
The following information describes the guidelines for wiring and the associated best practices to follow when using the device.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
• Disconnect all power from all equipment including connected devices prior to removing any covers or doors, or
installing or removing any accessories, hardware, cables or wires.
• Always use a properly rated voltage sensing device to confirm the power is off where and when indicated.
• Before powering the device back up, fit back and fix all the covers, hardware components and wiring.
• Check the earthing connections on all earthed devices.
• Use only the specified voltage when operating this equipment and any associated products.
• Comply with all standards regarding accident protection and local applicable safety directives.
Failure to follow these instructions will result in death or serious injury.
This equipment is designed to operate outside all hazardous locations and is not to be used in applications which generate (or could
potentially generate) hazardous environments. Install this equipment only in areas and applications known to be free from dangerous
atmospheres at all times.
DANGER
POTENTIAL FOR EXPLOSION
• Install and use this equipment in non-hazardous locations only.
• Do not install or use this equipment in applications which could generate hazardous atmospheres, such as
applications which use flammable refrigerants.
Failure to follow these instructions will result in death or serious injury.
For information regarding the use of control equipment in applications capable of generating hazardous materials, please contact the
relevant national regulatory bodies or certifying authorities.
4.1.1. Wiring guidelines
The following regulations must be complied with for wiring:
• Make connections as short as possible and do not wind them around electrically connected parts.
• Check that the operating conditions and surroundings comply with the specification values.
• Use wires of the correct diameter and suited to the voltage and current requirements.
• Use copper conductors (obligatory).
WARNING
UNINTENDED EQUIPMENT OPERATION
• The equipment signal cables (probes, digital inputs, communication, and the relative power supplies) must be laid
separately from the power cables.
• Every end application of this device must be tested individually and completely in order to check its proper operation
before putting it in service.
Failure to follow these instructions can result in death, serious injury, or equipment damage.