Category: Eaton

Installation

There are two particular aspects of safety that must be considered when installing the MTL4500 or

MTL5500 modules and these are:

• Functional safety

• Intrinsic safety

Reference must be made to the relevant sections within the instruction manual for MTL4500 range

(INM4500) or MTL5500 range (INM5500) which contain basic guides for the installation of the interface

equipment to meet the requirements of intrinsic safety. In many countries there are specific codes of

practice, together with industry guidelines, which must also be adhered to.

Provided that these installation requirements are followed then there are no additional factors to meet

the needs of applying the products for functional safety use.

To guard against the effects of dust and water the modules should be mounted in an enclosure providing

at least IP54 protection degree, or the location of mounting should provide equivalent protection such as

inside an equipment cabinet.

In applications using MTL4500 range, where the environment has a high humidity, the mounting

backplanes should be specified to include conformal coating.

Variant Description

Functionally the MTL4500 and MTL5500 range of modules are the same but differ in the following way:

– the MTL4500 modules are designed for backplane mounted applications

– the MTL5500 modules are designed for DIN-rail mounting.

In both models the hazardous area field-wiring connections (terminals 1.2. and optionally 4.5) are made through

the removable blue connectors, but the safe area and power connections for the MTL454xA/MTL454xAS

modules are made through the connector on the base, while the MTL554xA/MTL554xAS modules use the

removable grey connectors on the top and side of the module.

Note that the safe-area connection terminal numbers differ between the backplane and the DIN-rail

mounting models.

Note: To avoid repetition, further use of MTLx54xA and MTLx54xAS in this document can be understood to

include both DIN-rail and backplane models. Individual model numbers will be used only where there is a need

to distinguish between them.

All the module types described in this manual have the same connectivity for the field signals, supporting

4-wire process transmitters or currents sourced in the hazardous area. The connection of the repeated current

signals into the input measurement channels for the safety logic system follows the arrangement shown in the

following diagram. When the input channels of the Safety Instrumented System (SIS) are providing power for

the loop, the ‘S’ variants of the isolator modules are used to ‘sink’ the measuring current.

In the other cases the isolator modules ‘source’ the measuring current that flows into a load resistor inside the

input card of the Safety Instrumented System.

INTRODUCTION

Application and function

The Analogue Input module types MTLx541A/MTLx541AS (single channel) and MTLx544A/MTLx544AS

(dual channel) are intrinsic safety isolators that interface with process measurement transmitters located

in a hazardous area of a process plant. They are also designed and assessed according to IEC 61508 for

use in safety instrumented systems up to SIL 2.

The MTLx541A provides an input for a separately-powered 4/20mA transmitter located in a hazardous

area, and repeats the transmitter current into a load in the safe area. The MTLx544A supports two

identical channels for use with two separate transmitters. The MTLx541AS and MTLx544AS versions act as

a current sink for the safe area connection rather than driving the current into the load.

All the modules allow bi–directional transmission of HART communication signals superimposed on the

4/20mA loop current, so that the transmitter can be interrogated either from the operator station or by a

hand held communicator (HHC).

There are no configuration switches or operator controls to be set on the modules. These modules are

members of the MTL4500 and MTL5500 range of products.

The CODESYS software is the ideal programming tool for machine and process

applications in machine building and system integration. The software is the

perfect programming tool for all applications in which a powerful PLC or HMI-PLC

with various field bus connections is required. All XV/XC controllers from Eaton

can be programmed with CODESYS version 2 or 3. The software combines

sophisticated technical features and easy handling. In addition, it is the

programming system of choice for many manufacturers.

Flexible visualization:

On site or via mobile devices

comprehensive programming options:

ST, IL, LD, FBD, SFC and CFC

An integrated solution

Suitable for all XV and XC devices from Eaton

Core features

• Reduced project planning and commissioning times

• Web visualization

• Communication with GALILEO

• Supports SmartWire-DT solutions

• The application is structured into several individual runtime programs (multitasking)

Integrated fieldbus configuration

The integrated PROFIBUS-DP, CANopen and SmartWire-DT fieldbus configurators

facilitate the fast, intuitive and flexible connection of the devices to your fieldbus

of choice. In addition, CODESYS version 3 also offers configurators for Modbus 

TCP/RTU as well as for EthernetIP and EtherCat.

Flexible visualization

CODESYS allows users to visualize projects on site, for example via an HMI.

In addition, web-based visualization on mobile devices such as tablets and

smartphones is also possible. To enable this feature, CODESYS V3 generates

HTML5-based pages that can be displayed on any browser. This option is also

supported by controllers with integrated web server, such as the XC300

modular controller.

Integrated fieldbus configuration

The integrated PROFIBUS-DP, CANopen and SmartWire-DT fieldbus configurators

facilitate the fast, intuitive and flexible connection of the devices to your fieldbus

of choice. In addition, CODESYS version 3 also offers configurators for Modbus 

TCP/RTU as well as for EthernetIP and EtherCat.

Flexible visualization

CODESYS allows users to visualize projects on site, for example via an HMI.

In addition, web-based visualization on mobile devices such as tablets and

smartphones is also possible. To enable this feature, CODESYS V3 generates

HTML5-based pages that can be displayed on any browser. This option is also

supported by controllers with integrated web server, such as the XC300

modular controller.

Comprehensive application libraries are available

To facilitate the programming of controllers with CODESYS, Eaton provides

ready-made libraries for many applications, which saves time during project

planning. These include a control engineering and motion control toolbox

as well as communication libraries for the FTP server and client, UDP and TCP/IP.

Comprehensive application libraries are available

To facilitate the programming of controllers with CODESYS, Eaton provides

ready-made libraries for many applications, which saves time during project

planning. These include a control engineering and motion control toolbox

as well as communication libraries for the FTP server and client, UDP and TCP/IP.

CODESYS version 3

Compared to version 2. CODESYS 3 offers, among other things, extended language

options as well as the possibility to create several PLC programs in one project.

It also comes with the option to create new visualization applications.

In addition, web pages are now generated using HTML5. while customer-specific

applications can be created by means of a plug-in programming tool.

Eaton’s decentralized I/O system XI/ON included the XN… and XNE…

and the corresponding accessories.

The XN300 system, which was introduced as the successor to the

XI/ON I/O system, enables flexible expansion of the local function

level of the new XControl controller generation as well as use as remote

I/O via communication gateways. The universal use of the XN300 I/O

system for the local and decentralized I/O level reduces the variety of

devices and simplifies engineering. In addition, the IO configuration

can be flexibly adapted to the requirements of your automation solution

with all XN300 I/O modules.

In decentralized applications, the XN300 I/O modules can be integrated

into standardized CANopen and EtherCAT communication networks via

gateways, allowing the XN300 system to be used with any PLC and

providing a modern replacement for the XION series.

The flexible XControl system includes the modular XC-303. XC-204 and 

XC-104 PLCs, which can be combined with the XN300 I/O modules and

gateways, as well as the XSOFT-CODESYS-3 programming software.

Top performance

Via the CANopen and EtherCAT gateway, the XN300 can be integrated at fieldbus

level to create powerful systems that meet the requirements of demanding applications.

High-speed backplane communication links enables reaction times of less than 1 ms

and a maximum number of 640 channels. EtherCAT communication allows for

maximum machine productivity, making your application both efficient and future-proof.

XN300-Assist

The XN300-Assist software tool supports the planning and commissioning of the XN300

modules. In addition to online features, such as the reading and setting of signal states 

and parameters, important auxiliary functions, including a validity check, can be performed offline.

Applications with maximum flexibility

In combination with our powerful XC300 modular PLC, the XN300 system enables you

to quickly and effectively implement compact automation solutions. Thanks to its CAN

and EtherCAT interfaces, the XC300 can be used as a local or remote I/O to support

the implementation of universal solutions based on the XN300 system.

High modularity with a small footprint

The possibility of combining different modules as required turns the XN300

into the ideal system solution for a broad range of applications. The basic

product portfolio also includes gateway modules that support all Eaton I/O

system components. Digital modules, which can be used both as input/output

and relay modules, enable multiple application options. Analog input/output and

multi-functional modules, which can perform mixed functions, are also available.

Technology modules, which can, for example, be used for weighing, counting or

to drive motors, further expand the scope of application.