Beckhoff KL17 Series User manual

Documentation | EN
KL17xx/KS17xx
Digital input terminals
2021-08-04 | Version: 4.1.0

Table of contents
KL17xx/KS17xx 3Version: 4.1.0
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 KL/KS1702, KL/KS1712 - Introduction ..............................................................................................8
2.1.1 Technical data ................................................................................................................... 9
2.1.2 Contact assignment and LEDs ........................................................................................ 10
2.2 KL/KS1704 - Introduction ................................................................................................................11
2.2.1 Technical data ................................................................................................................. 12
2.2.2 Contact assignment and LEDs ........................................................................................ 13
2.3 KL/KS1722 - Introduction ................................................................................................................14
2.3.1 Technical data ................................................................................................................. 15
2.3.2 Contact assignment and LEDs ........................................................................................ 16
3 Mounting and wiring................................................................................................................................17
3.1 Instructions for ESD protection........................................................................................................17
3.2 Installation on mounting rails ...........................................................................................................18
3.3 Installation instructions for enhanced mechanical load capacity .....................................................21
3.4 Connection ......................................................................................................................................22
3.4.1 Connection system .......................................................................................................... 22
3.4.2 Wiring............................................................................................................................... 24
3.4.3 Shielding .......................................................................................................................... 25
3.5 ATEX - Special conditions (standard temperature range) ...............................................................26
3.6 Continuative documentation for ATEX and IECEx ..........................................................................27
3.7 Disposal...........................................................................................................................................27
4 TwinCAT ...................................................................................................................................................28
4.1 Programming ...................................................................................................................................30
5 Appendix ..................................................................................................................................................31
5.1 Support and Service ........................................................................................................................31

Table of contents
KL17xx/KS17xx4 Version: 4.1.0

Foreword
KL17xx/KS17xx 5Version: 4.1.0
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.
Copyright
© Beckhoff Automation GmbH & Co. KG, Germany.
The reproduction, distribution and utilization of this document as well as the communication of its contents to
others without express authorization are prohibited.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a
patent, utility model or design.

Foreword
KL17xx/KS17xx6 Version: 4.1.0
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
KL17xx/KS17xx 7Version: 4.1.0
1.3 Documentation issue status
Version Comment
4.1.0 • Product overview extended
• Technical data updated
• Ex markings added to technical data
• Instructions for ESD protection added
• Chapter Disposal added
• New title page
4.0.0 • Migration
• Document structure updated
• Technical data updated
• Installation instructions for enhanced mechanical load capacity added
Firmware and hardware versions
Documentation
Version
KL/KS1702-0000 KL/KS1704-0000 KL/KS1722-0000
Firmware Hardware Firmware Hardware Firmware Hardware
4.1.0 - 15 - 03 - 07
4.0.0 - 14 - 02 - 06
Documentation
Version
KL/KS1712-0000 KL/KS1712-0010 KL/KS1712-0060
Firmware Hardware Firmware Hardware Firmware Hardware
4.1.0 - 04 - 02 - 03
4.0.0 - 03 - 02 - 03
The K-bus firmware and hardware version (delivery state) are indicated by the serial number printed at 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 - K-bus firmware version
HH - hardware version
Example with serial number 49 05 1B 03
49 - week of production 49
05 - year of production 2005
1B - firmware version 1B
03 - hardware version 03

Product overview
KL17xx/KS17xx8 Version: 4.1.0
2 Product overview
Digital input terminals
Terminal Number of inputs Nominal voltage Filter Comment
KL/KS1702 [}8] 2 120VAC/ 230VAC 10ms
KL/KS1704 [}11] 4 120VAC/ 230VAC 10ms
KL/KS1712-0000 [}8] 2 120VAC/DC 10ms
KL/KS1712-0010 [}8] 2 24VAC/DC 10ms
KL/KS1712-0060 [}8] 2 60VDC 10ms
KL/KS1722 [}14] 2 120VAC/ 230VAC 10ms
2.1 KL/KS1702, KL/KS1712 - Introduction
Fig.1: KL1702
Two-channel digital input terminals for mains voltages from 24V to 230V
The KL/KS1702 und KL/KS1712-00x0 digital input terminals acquire the control signals from the process
level and transmit them, in an electrically isolated form, to the higher-level automation unit. The direct
connection of AC or DC sensors is possible. The Bus Terminals each contain two channels, whose signal
states are displayed by LEDs.

Product overview
KL17xx/KS17xx 9Version: 4.1.0
2.1.1 Technical data
Technical data KL1702-0000,
KS1702-0000
KL1712-0000,
KS1712-0000
KL1712-0010,
KS1712-0010
KL1712-0060,
KS1712-0060
Number of inputs 2
Connection technology 4-wire
Nominal voltage 120VAC/230VAC 120VAC/DC 24VAC/DC 60VDC
Signal voltage "0" 0V … 40V 0V … 5V 0V … 20V
Signal voltage "1" 79V … 260V 80V … 140V 14V … 28.8V 40V … 70V
Input filter typ. 10ms
Current consumption via K-bus typ. 3mA
Switching times 10ms
Input current >3mA, typ. 6mA
Electrical isolation 500V (K-bus / field voltage)
Bit width in process image 2 input bits
Configuration no address or configuration settings required
Use for 230V mains 120V mains 24V mains Railway mains
Dimensions (W x H x D) 15mm x 100mm x 70mm (aligned width 12mm)
Weight app. 60g
Permissible ambient temperature
during operation
0 °C to +55 °C
Permissible ambient temperature
during storage
-25 °C to +70 °C
Permissible relative air humidity 5% ... 95%, no condensation
Vibration / shock resistance according to EN 60068-2-6 / EN60068-2-27, EN 60068-2-29
EMC immunity/emission conforms to EN 61000-6-2 / EN 61000-6-4
Installation position Variable
Pluggable wiring for all KSxxxx terminals
Protection class IP20
Approvals/markings CE, UKCA,
cULus, EAC, GL,
ATEX [}26]
CE, UKCA, cULus, EAC,
ATEX [}26]
CE, UKCA,
cULus, EAC
Ex marking
Standard Marking
ATEX II 3 G Ex nA IIC T4 Gc

Product overview
KL17xx/KS17xx10 Version: 4.1.0
2.1.2 Contact assignment and LEDs
Fig.2: KL1702 - Contact assignment and LEDs
KL1702/KS1702, KL1712/KS1712 - Contact assignment
Terminal point Description
Name No.
Input1 1 Input 1
Mains voltage 2 Sensor supply (from power contact)
0V 3 Sensor supply (from power contact)
PE 4 PE (from power contact)
Input2 5 Input 2
Mains voltage 6 Sensor supply (from power contact)
0V 7 Sensor supply (from power contact)
PE 8 PE (from power contact)
KL1702/KS1702, KL1712/KS1712 - LED Displays
LED Color Meaning
Signal LED 1 - 2 green off Signal voltage "0"
on Signal voltage "1"

Product overview
KL17xx/KS17xx 11Version: 4.1.0
2.2 KL/KS1704 - Introduction
Fig.3: KL1704
Four channel digital input terminal 120/230VAC
The KL/KS1704 digital input terminal acquires the binary control signals from the process level and transmits
them, in an electrically isolated form, to the higher-level automation unit. The direct connection of 120/230
VAC sensors is possible. The Bus Terminal has four channels, whose signal state is displayed by LEDs.

Product overview
KL17xx/KS17xx12 Version: 4.1.0
2.2.1 Technical data
Technical data KL1704, KS1704
Connection technology 2 wire
Number of inputs 4
Nominal voltage 120/230VAC
Signal voltage ‘0’ 0V … 40V
Signal voltage ‘1’ 79V … 260V
Input filter typ. 10ms
Input current 4.6mA typ. at 230V, 2.3mA typ. at 120V
Current consumption from K-bus typ. 3mA
Switching times 10ms
Electrical isolation 500V (K-bus / field voltage), 3750VAC, 1min.
Bit width in process image 4 input bits
Configuration no address or configuration settings required
Special features resistive/capacitive input behavior
Weight app. 60g
Permissible ambient temperature
during operation
0°C ... +55°C
Permissible ambient temperature
during storage
-25°C ... +85°C
Permissible relative 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
Pluggable wiring for all KSxxxx terminals
Approvals/ markings CE, UKCA, cULus, EAC

Product overview
KL17xx/KS17xx 13Version: 4.1.0
2.2.2 Contact assignment and LEDs
Fig.4: KL1704/KS1704 - Contact assignment and LEDs
KL1704/KS1704 - Contact assignment
Terminal point Description
Name No.
Input1 1 Input 1
+120V/230V 2 Sensor supply (from power contact)
+120V/230V 3 Sensor supply (from power contact)
Input3 4 Input 3
Input2 5 Input 2
+120V/230V 6 Sensor supply (from power contact)
+120V/230V 7 Sensor supply (from power contact)
Input4 8 Input 4
KL1704/KS1704 - LED Displays
LED Color Meaning
Signal LED 1 - 4 green off Signal voltage "0" (0V to 40V)
on Signal voltage "1" (79V to 260V)

Product overview
KL17xx/KS17xx14 Version: 4.1.0
2.3 KL/KS1722 - Introduction
Fig.5: KL1722
Two-channel digital input terminal 120/230VAC
The KL/KS1722 digital input terminal acquires the binary control signals from the process level and transmits
them, in an electrically isolated form, to the higher-level automation unit. The direct connection of
120V/230VAC sensors is possible. The Bus Terminal has two channels, whose signal state is displayed by
LEDs. The terminal has no power contacts. This makes it possible to create individual potential groups. The
voltage between input 1 and input 2 must not exceed 230VAC.

Product overview
KL17xx/KS17xx 15Version: 4.1.0
2.3.1 Technical data
Technical data KL1722, KS1722
Connection technology 2 wire
Number of counters 2
Nominal voltage 120/230VAC
Signal voltage ‘0’ 0V … 40V
Signal voltage ‘1’ 79V … 260V
Input filter typ. 10ms
Input current >3mA, typ. 6mA
Current consumption from K-bus typ. 3mA
Switching times 10ms
Electrical isolation 500V (K-bus / field voltage), 3750VAC, 1min.
Bit width in process image 2 input bits
Configuration no address or configuration settings required
Special features resistive/capacitive input behavior
Weight app. 60g
Permissible ambient temperature
during operation
0°C ... +55°C
Permissible ambient temperature
during storage
-25°C ... +85°C
Permissible relative humidity 95%, no condensation
Vibration/ shock resistance according to EN60068-2-6/ EN 60068-2-27, refer also to
Installation instructions for enhanced mechanical load capacity [}21]
EMC immunity/ emission conforms to EN61000-6-2/ EN61000-6-4
Installation position variable
Protection class IP20
Pluggable wiring for all KSxxxx terminals
Approvals/markings CE, UKCA, cULus, EAC, GL, ATEX
Ex marking
Standard Marking
ATEX II 3 G Ex nA IIC T4 Gc

Product overview
KL17xx/KS17xx16 Version: 4.1.0
2.3.2 Contact assignment and LEDs
Fig.6: KL1722 - Contact assignment and LEDs
KL1722/KS1722 - Contact assignment
Terminal point Description
Name No.
Input1 3 Input1, neutral conductor, belonging to Input 1
Input2 7 Input2, neutral conductor, belonging to Input 2
KL1722/KS1722 - LED Displays
LED Color Meaning
Signal LEDs1 - 2 green off Signal voltage "0" (0V ... 40V)
on Signal voltage "1" (79V ... 260V)

Mounting and wiring
KL17xx/KS17xx 17Version: 4.1.0
3 Mounting and wiring
3.1 Instructions for ESD protection
NOTE
Destruction of the devices by electrostatic discharge possible!
The devices contain components at risk from electrostatic discharge caused by improper handling.
• Please ensure you are electrostatically discharged and avoid touching the contacts of the device directly.
• Avoid contact with highly insulating materials (synthetic fibers, plastic film etc.).
• Surroundings (working place, packaging and personnel) should by grounded probably, when handling
with the devices.
• Each assembly must be terminated at the right hand end with a KL9010 bus end terminal, to ensure the
protection class and ESD protection.
Fig.7: Spring contacts of the Beckhoff I/O components

Mounting and wiring
KL17xx/KS17xx18 Version: 4.1.0
3.2 Installation on mounting rails
WARNING
Risk of electric shock and damage of device!
Bring the bus terminal system into a safe, powered down state before starting installation, disassembly or
wiring of the bus terminals!
Assembly
Fig.8: Attaching on mounting rail
The bus coupler and bus terminals are attached to commercially available 35mm mounting rails (DIN rails
according to EN60715) by applying slight pressure:
1. First attach the fieldbus coupler to the mounting rail.
2. The bus terminals are now attached on the right-hand side of the fieldbus coupler. Join the compo-
nents with tongue and groove and push the terminals against the mounting rail, until the lock clicks
onto the mounting rail.
If the terminals are clipped onto the mounting rail first and then pushed together without tongue and
groove, the connection will not be operational! When correctly assembled, no significant gap should
be visible between the housings.
Fixing of mounting rails
The locking mechanism of the terminals and couplers extends to the profile of the mounting rail. At
the installation, the locking mechanism of the components must not come into conflict with the fixing
bolts of the mounting rail. To mount the mounting rails with a height of 7.5mm under the terminals
and couplers, you should use flat mounting connections (e.g. countersunk screws or blind rivets).

Mounting and wiring
KL17xx/KS17xx 19Version: 4.1.0
Disassembly
Fig.9: Disassembling of terminal
Each terminal is secured by a lock on the mounting rail, which must be released for disassembly:
1. Pull the terminal by its orange-colored lugs approximately 1cm away from the mounting rail. In doing
so for this terminal the mounting rail lock is released automatically and you can pull the terminal out of
the bus terminal block easily without excessive force.
2. Grasp the released terminal with thumb and index finger simultaneous at the upper and lower grooved
housing surfaces and pull the terminal out of the bus terminal block.
Connections within a bus terminal block
The electric connections between the Bus Coupler and the Bus Terminals are automatically realized by
joining the components:
• The six spring contacts of the K-Bus/E-Bus deal with the transfer of the data and the supply of the Bus
Terminal electronics.
• The power contacts deal with the supply for the field electronics and thus represent a supply rail within
the bus terminal block. The power contacts are supplied via terminals on the Bus Coupler (up to 24V)
or for higher voltages via power feed terminals.
Power Contacts
During the design of a bus terminal block, the pin assignment of the individual Bus Terminals must
be taken account of, since some types (e.g. analog Bus Terminals or digital 4-channel Bus Termi-
nals) do not or not fully loop through the power contacts. Power Feed Terminals (KL91xx, KL92xx
or EL91xx, EL92xx) interrupt the power contacts and thus represent the start of a new supply rail.
PE power contact
The power contact labeled PE can be used as a protective earth. For safety reasons this contact mates first
when plugging together, and can ground short-circuit currents of up to 125A.

Mounting and wiring
KL17xx/KS17xx20 Version: 4.1.0
Fig.10: Power contact on left side
NOTE
Possible damage of the device
Note that, for reasons of electromagnetic compatibility, the PE contacts are capacitatively coupled to the
mounting rail. This may lead to incorrect results during insulation testing or to damage on the terminal (e.g.
disruptive discharge to the PE line during insulation testing of a consumer with a nominal voltage of 230V).
For insulation testing, disconnect the PE supply line at the Bus Coupler or the Power Feed Terminal! In or-
der to decouple further feed points for testing, these Power Feed Terminals can be released and pulled at
least 10mm from the group of terminals.
WARNING
Risk of electric shock!
The PE power contact must not be used for other potentials!