Euroterm 2604 Installation And Wiring Instructions

Installation Safety Requirements
Various symbols used on the instrument are described below:
Caution (refer to the
Functional
!
accompanying documents) (ground) earth
INSTALLATION CATEGORY AND POLLUTION DEGREE
This unit has been designed to conform to BS EN61010 installation category II and
pollution degree 2. These are defined as follows:
Installation category II. The rated impulse voltage for equipment on nominal
230V ac mains is 2500V.
Pollution degree 2. Normally, only non-conductive pollution occurs. However,
a temporary conductivity caused by condensation must be expected.
PERSONNEL
Installation MUST only be carried out by qualified personnel.
ENCLOSURE OF LIVE PARTS
To prevent hands or metal tools touching parts that may be electrically live, the unit
must be installed in an enclosure.
WIRING
It is important to connect the unit in accordance with the data on this sheet,
ensuring the protective Earth connection is ALWAYS fitted first and disconnected
last. Wiring MUST comply with all local wiring regulations, i.e. UK, the latest IEE
wiring regulations (BS7671), and USA, NEC Class 1 wiring methods. Only use
copper conductors for connections. Terminal tightening torque 0.4Nm (3.5lbin) max.
Caution
Do not connect AC supply to low voltage sensor input or low level inputs and outputs.
POWER ISOLATION
The installation must include a power isolating switch or circuit breaker. This
should be in close proximity (1 meter) to the unit, in easy reach of the operator and
marked as the disconnecting device for the unit.
OVERCURRENT PROTECTION
It is recommended that the power supply to the system is fused appropriately to
protect the cabling to the unit.
CONDUCTIVE POLLUTION
Electrically conductive pollution, i.e. carbon dust, MUST be excluded from the enclosure
in which the unit is installed. To secure a suitable atmosphere in conditions of
conductive pollution, fit an air filter to the air intake of the enclosure. Where
condensation is likely, include a thermostatically controlled heater in the enclosure.
OVER-TEMPERATURE PROTECTION
When designing a contol system it is essential to consider the consequences should
any part of the system fail. In temperature control applications the primary danger is
the heating will remain constantly on. This could spoil the product, but more
seriously damage the process machinery being controlled, or even cause a fire.
This may occur if the,
temperature sensor is detached from the process
thermocouple wiring has short circuited
unit fails with the heating output constantly on
external valve or contactor is sticking in the heating condition
unit setpoint is set to high
Where damage or injury can occur, it is recommended that a separate
over-temperature protection unit, and independant temperature sensor, to isolate the
heating circuit, is fitted.
Note. Alarm relays within the unit will not indicate all failure conditions.
INSTALLATION REQUIREMENTS FOR EMC
To comply with European EMC directive certain installation precautions are necessary:
General guidance. Refer to EMC Installation Guide, Part no. HA025464.
Relay outputs. It may be necessary to fit a suitable filter to suppress conducted
emissions. Filter requirements depend on the type of load.
Table top installation. If using a standard power socket, compliance to
commercial and light industrial emissions standard is usually required. To
comply with conducted emissions standard, a suitable mains filter must be
installed.
General
This unit is intended for Industrial Temperature and Process Control applications,
within the requirements of the European Directives on Safety and EMC.
Protective earth
terminal
The Safety and EMC protection provided can be seriously impaired, if the unit is not used in
the manner specified. The installer MUST ensure the Safety and EMC of the
UNPACKING AND STORAGE
If on receipt, the packaging or unit are damaged, do NOT install, but contact the
supplier. If being stored before use, protect from humitity and dust in an ambient
temperature range of -30ºC to +75ºC.
Caution: Electrostatic discharge
Always observe all electrostatic precautions, before handling the unit.
SERVICE AND REPAIR
The unit has no servicable parts. Contact the supplier for repair.
CLEANING
Use Isolpropyl Alcohol to clean label. Labels will become illegible if water or water
based products are used. Use a mild soap solution to clean other exterior surfaces.
MANUFACTURING ADDRESS
U.K. Worthing
Eurotherm Limited
Telephone: (+44 1903) 268500
Fax: (+44 1903) 265982
E-mail: infouk@eurotherm.com
Web: www.eurotherm.com
© Copyright Eurotherm Limited™ 2013
All rights are strictly reserved. No part of this document may be reproduced, modified, or
transmitted in any form by any means, nor may it be stored in a retrieval system other than for
the purpose to act as an aid in operating the equipment to which the document relates, without
the prior written permission of Eurotherm Limited.
Eurotherm Limited pursues a policy of continuous development and product improvement. The
specification in this document may therefore change without notice. The information in this
document is given in good faith, but is intended for guidance only. Eurotherm Limited will
accept no responsibility for any loses arising from errors in this document.
Warning
installation.
2604/2704 HIGH PERFORMANCE
CONTROLLER/PROGRAMMER
INSTALLATION AND WIRING INSTRUCTIONS
These instruments are modular, fully configurable, high accuracy, high stability
temperature and process controllers, available in a single, dual or three loop format.
Each unit is supplied as a specific hardware configuration, e.g. there are five 'slots'
that contain specific plug in modules, identified by a hardware code printed on the
label on the side of the controller at time of ordering. The unit can also be supplied
with pre-configured software for some simple applications according to an optional
Configuration Code, or configured via the front panel or iTools Engineering Studio.
The 2604 has a dual 7-segment display of process value and setpoint with a LCD
panel for display of information and user defined messages. The user interface is menu
driven via the display and seven front panel keys.
2604 2704
The 2704 has a 120 x 160 pixel electroluminescent display of all process value and
setpoint information and user defined messages. The user interface is menu driven via
the display and seven front panel keys.
FEATURES INCLUDE:
Advanced ramp/dwell programmer with storage of up to 50 programs for the 2604
and 60 programs for the 2704.
Application specific controllers (including Handbook), i.e. Vacuum Furnace,
Carbon Potential, Humidity, Boiler (TDS) and Melt Pressure.
A wide variety of configurable inputs, including thermocouples, Pt100 resistance
thermometers (PRT) and high level process inputs.
Loop configuration as PID, On/Off or motorised valve position, with control of
strategies including single, cascade, override and ratio control.
PID control outputs can be relay, logic, triac or dc with motorised valve position
outputs being relay triac or logic.
Simplified commissioning and optimised process available via Auto Tuning and
PID gain scheduling.
Note. Refer to the Engineering Handbook for Operation and Configuration details, available on
the enclosed CD (Part No. LA029175) or via the website.
WARNING
This instrument is fitted with a back up battery which should be changed at regular
intervals.
It is important to maintain a record of instrument configuration or, preferably, a
clone file which can be re-loaded after a battery change or any other maintenance.
The battery is not serviceable, contact your local service centre to make suitable
arrangements. For further information see the User Manuals at www.eurotherm.co.uk
Part No. HA029465 (CN29750) Issue 3 Mar 13