Beckhoff KS2692 Operator's manual

Documentation | EN
KL2692/KS2692
Watchdog Terminal
2022-01-31 | Version: 2.1.0

Table of contents
KL2692/KS2692 3Version: 2.1.0
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
2.3 Basic function principles ....................................................................................................................9
2.4 LED displays....................................................................................................................................11
3 Mounting and wiring................................................................................................................................12
3.1 Instructions for ESD protection........................................................................................................12
3.2 Installation on mounting rails ...........................................................................................................13
3.3 Connection ......................................................................................................................................16
3.3.1 Connection system .......................................................................................................... 16
3.3.2 Wiring............................................................................................................................... 17
3.3.3 Contact assembly ............................................................................................................ 19
3.4 Application example ........................................................................................................................20
3.5 Disposal...........................................................................................................................................21
4 KS2000 Configuration Software ............................................................................................................22
4.1 KS2000 - Introduction......................................................................................................................22
4.2 Parameterization with KS2000 ........................................................................................................23
4.3 Register ...........................................................................................................................................25
4.4 Settings............................................................................................................................................26
4.5 Process data....................................................................................................................................26
5 Access from the user program ..............................................................................................................28
5.1 Process image.................................................................................................................................28
5.2 Control and status byte....................................................................................................................28
5.3 Register overview ............................................................................................................................30
5.4 Register description.........................................................................................................................31
5.5 Examples of Register Communication ............................................................................................32
5.5.1 Example 1: reading the firmware version from Register 9............................................... 32
5.5.2 Example 2: Writing to an user register............................................................................. 32
6 Appendix ..................................................................................................................................................36
6.1 Support and Service ........................................................................................................................36

Table of contents
KL2692/KS26924 Version: 2.1.0

Foreword
KL2692/KS2692 5Version: 2.1.0
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
KL2692/KS26926 Version: 2.1.0
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
KL2692/KS2692 7Version: 2.1.0
1.3 Documentation issue status
Version Comment
2.1.0 • Chapter “Technical data”
• Document structure updated
• Chapter “Instructions for ESD protection” added
• Chapter “Disposal” added
• New title page
• Update revision status
2.0.0 • Migration
1.0.1 • Process image corrected
• Information on basic function principles expanded
1.0 Description of KL2692 parameterization with the KS2000 configuration software
expanded.
0.2 Preliminary Version
0.1 Preliminary version for internal use
Firmware and hardware versions
Documentation
Version
KL2692-0000, KS2692-0000
Firmware Hardware
2.0.0 1C 04
1.0.1 1B 01
1.0 1B 00
0.2 - 00
0.1 - 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 39 04 1B 01:
39 - week of production 39
04 - year of production 2004
1B - firmware version 1B
01 - hardware version 01

Product overview
KL2692/KS26928 Version: 2.1.0
2 Product overview
2.1 Introduction
Fig.1: KL2692
The KL2692 Bus Terminal monitors a bit that is toggled by the controller during each cycle. If the toggle
signal fails, the terminal switches off two potential-free relays in order to prevent damage to the machine.
Failure of the toggle signal may be caused by the PLC cycle stopping, by a fault in the bus cable or
connector, or by a fault in a bus device. The cycle monitoring time can be parameterized. The Bus Terminal
has an enable input that enables the relay to be switched on if a correct toggle signal is detected.
DANGER
No personal protection!
The KL2692 may only be used for cycle monitoring with the purpose of preventing machine damage!
The KL2692 must not be used for cycle monitoring for personal protection under any circumstances!
The KL2692 must not be used for protection functions suchas emergency stop, access protection, secure
room monitoring, robot range monitoring, press safety valves etc.!

Product overview
KL2692/KS2692 9Version: 2.1.0
2.2 Technical data
Technical data KL2692-0000, KS2692-0000
Number of outputs 2 potential-free relay outputs (make contacts)
Rated load voltage of the outputs 230VAC/ 30VDC
Ohmic switching current 5AAC/5ADC
Inductive switching current 2AAC/2ADC
Minimum permitted load 10mA at 5VDC
Number of inputs 2 digital inputs (24V)
Rated voltage of the inputs 24VDC (-15%/ +20%)
Signal voltage "0" -3V ... 5V (EN61131-3, type 1)
Signal voltage "1" 15V ... 30V (EN61131-3, Type 1)
Input filter 3.0ms
Input current typically 5mA
Electrical isolation 500V (K-bus/field voltage)
Power supply for the electronics via the K-bus
Current consumption from K-bus typically 165mA
Bit width in the input process image 2 x 8bit data, 1 x 8bit status
Bit width in the output process image 2 x 8bit data, 1 x 8bit control
Mechanical switching cycles minimum 2 x 107
Electrical switching cycles minimum 1 x 105 (5A/30VDC)
Configuration via the Bus Coupler or the controller
Weight approx. 60g
Permissible ambient temperature range during
operation
0°C ... + 55 °C
Permissible ambient temperature range during storage -25°C ... + 85 °C
Permissible relative air humidity 95%, no condensation
Dimensions (W x H x D) approx. 15mmx100mmx70mm
Mounting on 35mm mounting rail conforms to EN60715
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
Protection class IP20
Installation position variable
Approval/markings* CE, UKCA, cULus, EAC
*) Real applicable approvals/markings see type plate on the side (product marking).
2.3 Basic function principles
Pulse sequence monitoring (cycle)
1. Monitoring is enabled with a falling edge at Input1.
2. If the pulse sequence is too slow (cycle time tP too long), the output relays switch off for a minimum
switch-off time tAmin. The minimum switch-off time can be specified in register R36 [}31].
3. If a pulse sequence (1cycle) was recognized as correct, the output relays will only switch on again
once monitoring is enabled again. This switching mode ensures that triggering of the watchdog re-
mains recognizable.
4. The two output contacts are looped into the control circuit of the switch-off relay.
Automatic self-start is prevented, since the switch-off function block has to be reset through an explicit
manual intervention (monitoring enable).

Product overview
KL2692/KS269210 Version: 2.1.0
Monitoring enable with falling edge
Monitoring is enabled with a falling edge at Input1. Therefore, monitoring cannot be enabled with a
continuous signal (high) at Input1!
Example
Fig.2: Signal sequence
Sequence
1. Rising edge at input 1
2. Toggle signal on the bus starts to toggle
3. Falling edge at input 1 (monitoring enable)
4. A full toggle cycle after the falling edge switches on the relays (Start)
5. Toggle signal on the bus stops toggling and remains in low state
6. The relays switch off after a missed toggle cycle (Stop)
7. Toggle signal on the bus starts to toggle again
8. Rising edge at input 1
9. Falling edge at input 1 (monitoring enable)
10. A full toggle cycle after the falling edge switches the relays back on again (Re-start)
11. Toggle signal on the bus stops toggling and remains in high state
12. The relays switch off after a missed toggle cycle (Stop)
13. Toggle signal on the bus starts to toggle again
14. Rising edge at input 1
15. Falling edge at input 1 (monitoring enable)
16. A full toggle cycle after the falling edge switches the relays back on again (Re-start)

Product overview
KL2692/KS2692 11Version: 2.1.0
2.4 LED displays
Fig.3: KL2692 - LED displays
LED Display
Relay 1 (green) On Relay contact 13/14 (make contact 1) closed
Relay 2 (green) On Relay contact 23/24 (make contact 2) closed
Watchdog OK (green) On The watchdog is triggered on a regular basis.
Error (red) not used
- not used
- not used
Input1 (green) Status input 1 (watchdog enable)
Input2 (green) Status input 2

Mounting and wiring
KL2692/KS269212 Version: 2.1.0
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.4: Spring contacts of the Beckhoff I/O components

Mounting and wiring
KL2692/KS2692 13Version: 2.1.0
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.5: 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
KL2692/KS269214 Version: 2.1.0
Disassembly
Fig.6: 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
KL2692/KS2692 15Version: 2.1.0
Fig.7: 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!

Mounting and wiring
KL2692/KS269216 Version: 2.1.0
3.3 Connection
3.3.1 Connection system
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!
Overview
The bus terminal system offers different connection options for optimum adaptation to the respective
application:
• The terminals of ELxxxx and KLxxxx series with standard wiring include electronics and connection
level in a single enclosure.
• The terminals of ESxxxx and KSxxxx series feature a pluggable connection level and enable steady
wiring while replacing.
• The High Density Terminals (HD Terminals) include electronics and connection level in a single
enclosure and have advanced packaging density.
Standard wiring (ELxxxx / KLxxxx)
Fig.8: Standard wiring
The terminals of ELxxxx and KLxxxx series have been tried and tested for years.
They feature integrated screwless spring force technology for fast and simple assembly.
Pluggable wiring (ESxxxx / KSxxxx)
Fig.9: Pluggable wiring
The terminals of ESxxxx and KSxxxx series feature a pluggable connection level.
The assembly and wiring procedure is the same as for the ELxxxx and KLxxxx series.
The pluggable connection level enables the complete wiring to be removed as a plug connector from the top
of the housing for servicing.
The lower section can be removed from the terminal block by pulling the unlocking tab.
Insert the new component and plug in the connector with the wiring. This reduces the installation time and
eliminates the risk of wires being mixed up.
The familiar dimensions of the terminal only had to be changed slightly. The new connector adds about 3
mm. The maximum height of the terminal remains unchanged.

Mounting and wiring
KL2692/KS2692 17Version: 2.1.0
A tab for strain relief of the cable simplifies assembly in many applications and prevents tangling of individual
connection wires when the connector is removed.
Conductor cross sections between 0.08mm2 and 2.5mm2 can continue to be used with the proven spring
force technology.
The overview and nomenclature of the product names for ESxxxx and KSxxxx series has been retained as
known from ELxxxx and KLxxxx series.
High Density Terminals (HD Terminals)
Fig.10: High Density Terminals
The terminals from these series with 16 terminal points are distinguished by a particularly compact design,
as the packaging density is twice as large as that of the standard 12mm bus terminals. Massive conductors
and conductors with a wire end sleeve can be inserted directly into the spring loaded terminal point without
tools.
Wiring HD Terminals
The High Density Terminals of the ELx8xx and KLx8xx series doesn't support pluggable wiring.
Ultrasonically “bonded” (ultrasonically welded) conductors
Ultrasonically “bonded” conductors
It is also possible to connect the Standard and High Density Terminals with ultrasonically “bonded”
(ultrasonically welded) conductors. In this case, please note the tables concerning the wire-size
width [}18]!
3.3.2 Wiring
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!

Mounting and wiring
KL2692/KS269218 Version: 2.1.0
Terminals for standard wiring ELxxxx/KLxxxx and for pluggable wiring ESxxxx/KSxxxx
Fig.11: Connecting a cable on a terminal point
Up to eight terminal points enable the connection of solid or finely stranded cables to the bus terminal. The
terminal points are implemented in spring force technology. Connect the cables as follows:
1. Open a terminal point by pushing a screwdriver straight against the stop into the square opening
above the terminal point. Do not turn the screwdriver or move it alternately (don't toggle).
2. The wire can now be inserted into the round terminal opening without any force.
3. The terminal point closes automatically when the pressure is released, holding the wire securely and
permanently.
See the following table for the suitable wire size width.
Terminal housing ELxxxx, KLxxxx ESxxxx, KSxxxx
Wire size width (single core wires) 0.08 ... 2.5mm20.08 ... 2.5mm2
Wire size width (fine-wire conductors) 0.08 ... 2.5mm20.08 ... 2.5mm2
Wire size width (conductors with a wire end sleeve) 0.14 ... 1.5mm20.14 ... 1.5mm2
Wire stripping length 8 ... 9mm 9 ... 10mm
High Density Terminals (HD Terminals [}17]) with 16 terminal points
The conductors of the HD Terminals are connected without tools for single-wire conductors using the direct
plug-in technique, i.e. after stripping the wire is simply plugged into the terminal point. The cables are
released, as usual, using the contact release with the aid of a screwdriver. See the following table for the
suitable wire size width.
Terminal housing High Density Housing
Wire size width (single core wires) 0.08 ... 1.5mm2
Wire size width (fine-wire conductors) 0.25 ... 1.5mm2
Wire size width (conductors with a wire end sleeve) 0.14 ... 0.75mm2
Wire size width (ultrasonically “bonded" conductors) only 1.5mm2 (see notice [}17])
Wire stripping length 8 ... 9mm

Mounting and wiring
KL2692/KS2692 19Version: 2.1.0
3.3.3 Contact assembly
Fig.12: KL2692 - Contact assembly
Terminal point No. Connection for
13 1 Relay contact 13 (NO contact 1)
14 2 Relay contact 14 (NO contact 2)
+24V 3 24V power contact
Input 1 (Watchdog Enable) 4 Input 1 (24VDC), watchdog enabled with negative edge
23 5 Relay contact 23 (NO contact 1)
24 6 Relay contact 24 (NO contact 2)
0V 7 0V power contact
Input 2 8 Input 2(24VDC)

Mounting and wiring
KL2692/KS269220 Version: 2.1.0
3.4 Application example
DANGER
No personal protection!
The KL2692 may only be used for cycle monitoring with the purpose of preventing machine damage!
The KL2692 must not be used for cycle monitoring for personal protection under any circumstances!
The KL2692 must not be used for protection functions such as emergency stop, access protection, secure
room monitoring, robot range monitoring, press safety valves etc.!
Switching off the voltage for the power contacts
The NO contacts of the KL2692 control a contactor that switches the supply voltage (24V) for the power
contacts..
Fig.13: Application example
Function
1. Monitoring can be enabled via push button S1 (negative edge) when the watchdog is triggered. The
KL2692 relays are switched on, and contactor K1 switches on the supply voltage (24V) for the power
contacts.
2. If the watchdog is not triggered over the watchdog time specified in register R35 [}31], the KL2692
relays are de-energized and contactor K1 switches off the supply voltage for the power contacts.
3. If the watchdog is triggered again, monitoring has to be re-enabled via push button S1, so that the
KL2692 relays switch on again!
4. NC contacts S2 and S3 can be used for manually switching off contactor K1 and therefore the supply
voltage for the power contacts.