Pepperl+Fuchs MFT User Manual

ISO9001

MFT-***.****(.L)

Multifunction Terminal

Manual

With regard to the supply of products, the current issue of the following document is applicable:
The General Terms of Delivery for Products and Services of the Electrical Industry, published by the Central
Association of the Electrical Industry (Zentralverband Elektrotechnik und Elektroindustrie (ZVEI) e.V.) in its most
recent version as well as the supplementary clause: "Expanded reservation of proprietorship"

Worldwide

Pepperl+Fuchs Group

Lilienthalstr. 200

68307 Mannheim

Germany

Phone: [phone] - 0

E-mail: [e-mail]

North American Headquarters

Pepperl+Fuchs Inc.

1600 Enterprise Parkway

Twinsburg, Ohio 44087

USA

Phone: [phone]

E-mail: [e-mail]

Asia Headquarters

Pepperl+Fuchs Pte. Ltd.

P+F Building

18 Ayer Rajah Crescent

Singapore 139942

Phone: [phone]

E-mail: [e-mail]

https://www.pepperl-fuchs.com

Multifunction Terminal MFT-***.****(.L)

Contents

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Content of this Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Target Group, Personnel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2 Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.4 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.5 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2 Connecting the Plug-In Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.3 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.1 Coding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5 Dismounting, Maintenance, and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.1 Removing Plug-In Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.2 Dismounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6 Storage, Transport, and Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

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Multifunction Terminal MFT-***.****(.L)

Contents

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Multifunction Terminal MFT-***.****(.L)

Introduction

1 Introduction

1.1 Content of this Document

This document contains information that you need in order to use your product throughout
the applicable stages of the product life cycle. These can include the following:

• Product identification

• Delivery, transport, and storage

• Mounting and installation

• Commissioning and operation

• Maintenance and repair

• Troubleshooting

• Dismounting

• Disposal

Note

This document does not substitute the instruction manual.

Note

For full information on the product, refer to the instruction manual and further documentation
on the Internet at www.pepperl-fuchs.com.

The documentation consists of the following parts:

• Present document

• Instruction manual

• Datasheet

Additionally, the following parts may belong to the documentation, if applicable:

• EU-type examination certificate

• EU declaration of conformity

• Attestation of conformity

• Certificates

• Control drawings

• Additional documents

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Multifunction Terminal MFT-***.****(.L)

Introduction

1.2 Target Group, Personnel

Responsibility for planning, assembly, commissioning, operation, maintenance,
and dismounting lies with the plant operator.

Only appropriately trained and qualified personnel may carry out mounting, installation,
commissioning, operation, maintenance, and dismounting of the product. The personnel
must have read and understood the instruction manual and the further documentation.

Prior to using the product make yourself familiar with it. Read the document carefully.

1.3 Symbols Used

This document contains symbols for the identification of warning messages and of informative
messages.

Warning Messages

You will find warning messages, whenever dangers may arise from your actions.
It is mandatory that you observe these warning messages for your personal safety and in order
to avoid property damage.

Depending on the risk level, the warning messages are displayed in descending order
as follows:

Danger!

This symbol indicates an imminent danger.

Non-observance will result in personal injury or death.

Warning!

This symbol indicates a possible fault or danger.

Non-observance may cause personal injury or serious property damage.

Caution!

This symbol indicates a possible fault.

Non-observance could interrupt the device and any connected systems and plants,
or result in their complete failure.

Informative Symbols

Note

This symbol brings important information to your attention.

Action

This symbol indicates a paragraph with instructions. You are prompted to perform
an action or a sequence of actions.

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Multifunction Terminal MFT-***.****(.L)

Product Specifications

2 Product Specifications

2.1 Function

Many applications in hazardous areas work with field devices that do not have
intrinsically safe connections. In these applications, protection methods such as type Ex e
protection (increased safety) are used. In contrast to intrinsically safe circuits,
increased safety connections are generally not accessible when energized. Disconnecting
these circuits for maintenance would therefore require either the plant to be shut down
or a hot work permit to be obtained.

The multifunction terminal offers the following options for disconnecting
non-intrinsically safe circuits or removing plug-in modules in hazardous areas:

• The multifunction terminals MFT-R.****, MFT-2R.****, MFT-D****(.L), MFT-2D.****,

MFT-F.****(.L), MFT-2F.****, MFT-2L.**** enable the non-intrinsically safe circuits
to be disconnected.

• The multifunction terminals MFT-FT.****, MFT-RNO.****, MFT-RNC.**** enable

the plug-in modules to be removed even in hazardous areas.

The non-intrinsically safe circuits are separated in 2 steps:

• Step 1

The electrical contacts between the base module and the plug-in module are separated
in areas protected by the type of protection Ex d.
In this position the sparks, that have formed within the contact area, can no longer ignite
the possibly existing surrounding atmosphere.

• Step 2

The plug-in module, which is now completely electrically isolated, can now be removed.
Possible ignition sources in the area of the electrical contacts are no longer present.
The electrical connections of the base module are protected and comply with degree
of protection IP30 according to IEC/EN 60529. After removal, the plug-in module
is de-energized.

• Once the plug-in module has been removed, the de-energized side is accessible.

This allows field devices that are connected to the de-energized side to be replaced,
while the remaining part of the system continues to be energized.

Typical applications for the multifunction terminal are:

• Fusing Ex d valves, signal lamps, acoustic sensors

• Diode decoupling of supply circuits

• Simple OR gate for Zone 1 mounting

• Visible disconnect of field devices

• Relay switch for power circuits

• Current limitation using resistors

• Optocoupler applications

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