Beckhoff KL2798 Bedienerhandbuch

Documentation | EN

KL2798

Bus terminal, 8-channel solid state output, 30 V AC, 48 V DC,

2 A, potential-free

2021-06-17 | Version: 1.1.0

Table of contents

KL2798 3Version: 1.1.0

Table of contents

1 Foreword ....................................................................................................................................................5

1.1 Notes on the documentation..............................................................................................................5

1.2 Safety instructions .............................................................................................................................6

1.3 Documentation Issue Status..............................................................................................................7

2 Product overview.......................................................................................................................................8

2.1 Introduction........................................................................................................................................8

2.2 Technical data ...................................................................................................................................9

3 Presentation KL2798 within TwinCAT ...................................................................................................10

4 Mounting and wiring................................................................................................................................11

4.1 Instructions for ESD protection........................................................................................................11

4.2 Installation on mounting rails ...........................................................................................................12

4.3 Connection system ..........................................................................................................................14

4.4 Connection and LED displays .........................................................................................................18

5 Appendix ..................................................................................................................................................19

5.1 Support and Service ........................................................................................................................19

Table of contents

KL27984 Version: 1.1.0

Foreword

KL2798 5Version: 1.1.0

1 Foreword

1.1 Notes on the documentation

Intended audience

This description is only intended for the use of trained specialists in control and automation engineering who

are familiar with the applicable national standards.

It is essential that the documentation and the following notes and explanations are followed when installing

and commissioning these components.

It is the duty of the technical personnel to use the documentation published at the respective time of each

installation and commissioning.

The responsible staff must ensure that the application or use of the products described satisfy all the

requirements for safety, including all the relevant laws, regulations, guidelines and standards.

Disclaimer

The documentation has been prepared with care. The products described are, however, constantly under

development.

We reserve the right to revise and change the documentation at any time and without prior announcement.

No claims for the modification of products that have already been supplied may be made on the basis of the

data, diagrams and descriptions in this documentation.

Trademarks

Beckhoff®, TwinCAT®, TwinCAT/BSD®, TC/BSD®, EtherCAT®, EtherCATG®, EtherCATG10®, EtherCATP®,

SafetyoverEtherCAT®, TwinSAFE®, XFC®, XTS® and XPlanar® are registered trademarks of and licensed by

Beckhoff Automation GmbH. Other designations used in this publication may be trademarks whose use by

third parties for their own purposes could violate the rights of the owners.

Patent Pending

The EtherCAT Technology is covered, including but not limited to the following patent applications and

patents: EP1590927, EP1789857, EP1456722, EP2137893, DE102015105702 with corresponding

applications or registrations in various other countries.

EtherCAT® is registered trademark and patented technology, licensed by Beckhoff Automation GmbH,

Germany.

The reproduction, distribution and utilization of this document as well as the communication of its contents to

others without express authorization are prohibited.

patent, utility model or design.

Foreword

KL27986 Version: 1.1.0

1.2 Safety instructions

Safety regulations

Please note the following safety instructions and explanations!

Product-specific safety instructions can be found on following pages or in the areas mounting, wiring,

commissioning etc.

Exclusion of liability

All the components are supplied in particular hardware and software configurations appropriate for the

application. Modifications to hardware or software configurations other than those described in the

documentation are not permitted, and nullify the liability of Beckhoff Automation GmbH & Co. KG.

Personnel qualification

This description is only intended for trained specialists in control, automation and drive engineering who are

familiar with the applicable national standards.

Description of instructions

In this documentation the following instructions are used.

These instructions must be read carefully and followed without fail!

DANGER

Serious risk of injury!

Failure to follow this safety instruction directly endangers the life and health of persons.

WARNING

Risk of injury!

Failure to follow this safety instruction endangers the life and health of persons.

CAUTION

Personal injuries!

Failure to follow this safety instruction can lead to injuries to persons.

NOTE

Damage to environment/equipment or data loss

Failure to follow this instruction can lead to environmental damage, equipment damage or data loss.

Tip or pointer

This symbol indicates information that contributes to better understanding.

Foreword

KL2798 7Version: 1.1.0

1.3 Documentation Issue Status

Version Comment

1.1.0 • Technical data updated

• Chapter Instructions for ESD protection added

• Design of the safety instructions adapted to IEC 82079-1

• New title page

1.0.0 • First release

Firmware and hardware versions

Documentation

Version

KL2798-0000

Firmware Hardware

1.1.0 - 01

1.0.0 - 00

The firmware and hardware versions (delivery state) can be taken from the serial number printed on the side

of the terminal.

Syntax of the serial number

Structure of the serial number: WW YY FF HH

WW - week of production (calendar week)

YY - year of production

FF - firmware version

HH - hardware version

Example with serial number 40 15 1A 00:

40 - week of production 40

15 - year of production 2015

1A - firmware version 1A

00 - hardware version 00

Product overview

KL27988 Version: 1.1.0

2 Product overview

2.1 Introduction

Fig.1: KL2798 - Bus terminal, 8-channel solid state output, 30 V AC, 48 V DC, 2 A, potential-free

The digital KL2798 Bus Terminal provides eight switches that can be used like a relay contact for AC/DC

voltages. The electronic switch is realized through high-performance MOSFET transistors with low switch-on

resistance. The switch itself is not short-circuit-proof, but due to its high pulse current capability it can cope

with current until an external fuse triggers a switch-off.

Wear resistance increases the availability of the application. Resistive and inductive loads can be switched

up to a rated voltage of 30VAC/DC, completely resistive loads also up to a rated voltage of 48VDC.

High peak voltages and electromagnetic interference pulses are prevented.

Product overview

KL2798 9Version: 1.1.0

2.2 Technical data

Technical data KL2798-0000

Connection technology 2-wire

Number of outputs 8 make contacts

Rated load voltage 0 … 30VAC/DC (only ohmic load: 0 … 48VDC)

Peak current max. 2A per channel (∑ 10A)

Breakdown voltage 80V

Peak current 5A (100ms), < 50A (10ms)

Short circuit current not short-circuit-proof, see peak current

Reverse voltage protection –

Isolation voltage (channel/channel) < 200V

Electrical isolation 500V (K-bus/field potential)

Switching on speed typ. 1.8ms, max. 5ms

Switching off speed typ. 30ms, max. 50ms

On-resistance typ. 0.03Ω

Current consumption power contacts –

Current consumption K-bus 80mA

Bit width in the process image 8 output bits

Special features substitute for relay contacts, potential-free

Dimensions (W x H x D) app. 15 mm x 100 mm x 70 mm (width aligned: 12mm)

Weight app. 50 g

Mounting [}11] on 35 mm mounting rail according to EN60715

Permissible ambient temperature range at

operation

0 … +55°C

Permissible ambient temperature range for

storage

-25…+85°C

Permissible relative air humidity 95 %, no condensation

Vibration/shock resistance conforms to EN60068-2-6/ EN60068-2-27

EMC immunity/ emission conforms to EN61000-6-2/ EN61000-6-4

Installation position variable

Protection class IP20

Approvals/ markings CE, cULus

Presentation KL2798 within TwinCAT

KL279810 Version: 1.1.0

3 Presentation KL2798 within TwinCAT

Fig.2: KL2798 within TwinCAT 2.11

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