Beckhoff KS3222 Operator's manual

Documentation | EN
KL3222/KS3222
2 Channel Accurate Input Terminals for PT100 (RTD)
2022-05-04 | Version: 2.4.0

Table of contents
KL3222/KS3222 3Version: 2.4.0
Table of contents
1 Foreword....................................................................................................................................................5
1.1 Notes on the documentation .............................................................................................................5
1.2 Safety instructions.............................................................................................................................6
1.3 Documentation issue versions ..........................................................................................................7
2 Product overview ......................................................................................................................................8
2.1 Introduction .......................................................................................................................................8
2.2 Technical data...................................................................................................................................9
3 Mounting and wiring ...............................................................................................................................11
3.1 Instructions for ESD protection .......................................................................................................11
3.2 Installation on mounting rails...........................................................................................................12
3.3 Installation instructions for enhanced mechanical load capacity.....................................................15
3.4 Disposal ..........................................................................................................................................15
3.5 Connection ......................................................................................................................................16
3.5.1 Connection system........................................................................................................... 16
3.5.2 Wiring ...............................................................................................................................17
3.5.3 Shielding ..........................................................................................................................19
3.5.4 Contact assignment ......................................................................................................... 19
3.6 ATEX - Special conditions (standard temperature range)...............................................................20
3.7 Continuative documentation for ATEX and IECEx..........................................................................21
4 Configuration Software KS2000 ............................................................................................................22
4.1 KS2000 - Introduction .....................................................................................................................22
4.2 Parameterization with KS2000........................................................................................................24
4.3 Settings ...........................................................................................................................................25
4.4 Sample program for register communication via EtherCAT on KL3314 exemplary........................27
5 Access from the user program ..............................................................................................................30
5.1 Process image ................................................................................................................................30
5.2 Control and status bytes .................................................................................................................31
5.2.1 Process data mode .......................................................................................................... 31
5.2.2 Register communication................................................................................................... 32
5.3 Register overview............................................................................................................................33
5.4 Register description ........................................................................................................................34
5.5 Examples of Register Communication ............................................................................................36
5.5.1 Example 1: reading the firmware version from Register 9 ............................................... 36
5.5.2 Example 2: Writing to an user register ............................................................................. 37
6 Appendix..................................................................................................................................................40
6.1 Beckhoff Identification Code (BIC) ..................................................................................................40
6.2 Support and Service........................................................................................................................42

Table of contents
KL3222/KS32224 Version: 2.4.0

Foreword
KL3222/KS3222 5Version: 2.4.0
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
KL3222/KS32226 Version: 2.4.0
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
KL3222/KS3222 7Version: 2.4.0
1.3 Documentation issue versions
Version Comment
2.4.0 • Chapter “Technical data” updated
• Document structure updated
• Chapter “Disposal” added
• New title page
• Revision status updated
2.3.0 • Update chapter “Instructions for ESD protection”
• Chapter “Beckhoff Identification Code (BIC) added
2.2.0 • Update chapter “Introduction”
• Update chapter “Technical data”
• Update chapter “Register description”
• Update structure
2.1.0 • Design of the safety instructions adapted to IEC 82079-1
• Update Technical data
• Chapter Instructions for ESD protection added
• Chapter ATEX - Special conditions (standard temperature range) and ATEX
Documentation added
• Example program added to chapter “KS2000 Configuration software“
• Update structure
2.0.0 • Migration
1.1.0 • Register description expanded
• Parameterization with KS2000 extended
1.0.0 • First public issue
Firmware and hardware versions
Documentation
version
Firmware Hardware
2.3.0 1C 03
2.2.0 1C 02
2.1.0 1C 02
2.0.0 1C 02
1.1.0 1B 00
1.0.0 1B 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
FF - firmware version
HH - hardware version
Example with serial number 20 09 1A 00:
20 - week of production 20
09 - year of production 2009
1A - firmware version 1A
00 - hardware version 00

Product overview
KL3222/KS32228 Version: 2.4.0
2 Product overview
2.1 Introduction
Fig.1: KL3222
The KL3222 analog input terminal allows the direct connection of resistance sensors in 4-wire connection
technology; external jumpers must be used for 2/3-wire connection technology.
Linearization over the full temperature range is realized with the aid of a microprocessor. The temperature
range can be selected freely. The Bus Terminal's standard settings are: Resolution 0.01°C in the
temperature range of PT100 sensors in 4-wire connection technology.
The two Run LEDs indicate data exchange with the Bus Coupler, the error LEDs show sensor faults (e.g.
broken wire).

Product overview
KL3222/KS3222 9Version: 2.4.0
2.2 Technical data
Technical data KL3222, KS3222
Inputs 2
Sensor types PT100, PT200, PT500, PT1000, Ni100, Ni120, Ni1000,
resistance measurement (e.g. potentiometer connection,
10Ω...1.2/5kΩ), KTY
Connection technology 4-wire (2/3-wire possible, see below)
Measuring range Pt sensors -200…+850 °C
Ni sensors -60…+250 °C
high-precision -200…+320 °C
Conversion time approx. 50ms
Measuring current typically 0.5mA
Resolution 0.01°C per digit
Measuring accuracy 0.1 °C at 40 °C ambient temperature, 4-wire connection, PT100
sensors and 50Hz filter
Bit width in the input process image 2 data words, 2 status bytes (optional)
Bit width in the output process image 2 control bytes (optional)
Power supply for the electronics via the K-bus
Current consumption from K-bus typically 60mA
Electrical isolation 500V (K-Bus/signal voltage)
Terminal points Spring-loaded terminals
Pluggable wiring [}16] for all KSxxxx terminals
Weight approx. 70g
Dimensions (W x H x D) approx. 15mmx100mmx70mm (width aligned: 12mm)
Assembly [}12] on 35mm mounting rail conforms to EN60715
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
Enhanced mechanical load capacity Yes, see Installation instructions [}15] for terminals with
enhanced mechanical load capacity
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, ATEX [}20]
*) Real applicable approvals/markings see type plate on the side (product marking).
Ex marking
Standard Marking
ATEX II 3 G Ex nA IIC T4 Gc

Product overview
KL3222/KS322210 Version: 2.4.0
The KL3222 is designed for 4-wire measurement
The KL3222 is designed for 4-wire measurement. +R/-R are the current-carrying connection cables,
+RL/-RL are the currentless sense cables.
If a sensor is to be connected using 2/3 wire connection technology and the KL3202 cannot be
used, the following applies
• one or two jumper(s) per channel must be set externally, see wiring diagram
• the setting "four-wire" must be retained in R32, the 2/3-wire measurement is not calibrated by the
manufacturer
• the falsifying lead resistance should be entered in R38. The firmware subtracts this lead resis-
tance from the measured resistance in order to determine a corrected temperature. This calcula-
tion of R38 is active in all 3 modes 2/3/4-wire of R32.

Mounting and wiring
KL3222/KS3222 11Version: 2.4.0
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.2: Spring contacts of the Beckhoff I/O components

Mounting and wiring
KL3222/KS322212 Version: 2.4.0
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.3: 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
KL3222/KS3222 13Version: 2.4.0
Disassembly
Fig.4: 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
KL3222/KS322214 Version: 2.4.0
Fig.5: 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
KL3222/KS3222 15Version: 2.4.0
3.3 Installation instructions for enhanced mechanical
load capacity
WARNING
Risk of injury through electric shock and damage to the device!
Bring the Bus Terminal system into a safe, de-energized state before starting mounting, disassembly or
wiring of the Bus Terminals!
Additional checks
The terminals have undergone the following additional tests:
Verification Explanation
Vibration 10 frequency runs in 3 axes
6 Hz < f < 60 Hz displacement 0.35 mm, constant amplitude
60.1Hz<f<500Hz acceleration 5g, constant amplitude
Shocks 1000 shocks in each direction, in 3 axes
25 g, 6 ms
Additional installation instructions
For terminals with enhanced mechanical load capacity, the following additional installation instructions apply:
• The enhanced mechanical load capacity is valid for all permissible installation positions
• Use a mounting rail according to EN 60715 TH35-15
• Fix the terminal segment on both sides of the mounting rail with a mechanical fixture, e.g. an earth
terminal or reinforced end clamp
• The maximum total extension of the terminal segment (without coupler) is:
64 terminals (12mm mounting with) or 32 terminals (24mm mounting with)
• Avoid deformation, twisting, crushing and bending of the mounting rail during edging and installation of
the rail
• The mounting points of the mounting rail must be set at 5 cm intervals
• Use countersunk head screws to fasten the mounting rail
• The free length between the strain relief and the wire connection should be kept as short as possible. A
distance of approx. 10cm should be maintained to the cable duct.
3.4 Disposal
Products marked with a crossed-out wheeled bin shall not be discarded
with the normal waste stream. The device is considered as waste
electrical and electronic equipment. The national regulations for the
disposal of waste electrical and electronic equipment must be observed.

Mounting and wiring
KL3222/KS322216 Version: 2.4.0
3.5 Connection
3.5.1 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.6: 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.7: 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
KL3222/KS3222 17Version: 2.4.0
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.8: 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]!
3.5.2 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
KL3222/KS322218 Version: 2.4.0
Terminals for standard wiring ELxxxx/KLxxxx and for pluggable wiring ESxxxx/KSxxxx
Fig.9: 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
KL3222/KS3222 19Version: 2.4.0
3.5.3 Shielding
Shielding
Encoder, analog sensors and actors should always be connected with shielded, twisted paired
wires.
3.5.4 Contact assignment
WARNING
Risk of injury through electric shock and damage to the device!
Bring the Bus Terminals system into a safe, de-energized state before starting mounting, disassembly or
wiring of the Bus Terminals!
Fig.10: KL3222 - Contact assignment
KL3222, KS3222
Terminal point No. Connection for
+R1 1 Channel 1: +R
+RL1 2 Channel 1: +RL
-R1 3 Channel 1: -R
-RL1 4 Channel 1: -RL
+R1 5 Channel 2: +R
+RL1 6 Channel 2: +RL
-R1 7 Channel 2: -R
-RL1 8 Channel 2: -RL

Mounting and wiring
KL3222/KS322220 Version: 2.4.0
3.6 ATEX - Special conditions (standard temperature
range)
WARNING
Observe the special conditions for the intended use of Beckhoff fieldbus components with
standard temperature range in potentially explosive areas (directive2014/34/EU)!
• The certified components are to be installed in a suitable housing that guarantees a protection class of at
least IP54 in accordance with EN60079-15! The environmental conditions during use are thereby to be
taken into account!
• For dust (only the fieldbus components of certificate no. KEMA10ATEX0075XIssue9): The equipment
shall be installed in a suitable enclosure providing a degree of protection of IP54 according to
EN60079-31 for group IIIA or IIIB and IP6X for group IIIC, taking into account the environmental condi-
tions under which the equipment is used!
• If the temperatures during rated operation are higher than 70°C at the feed-in points of cables, lines or
pipes, or higher than 80°C at the wire branching points, then cables must be selected whose tempera-
ture data correspond to the actual measured temperature values!
• Observe the permissible ambient temperature range of 0 to 55°C for the use of Beckhoff fieldbus compo-
nents standard temperature range in potentially explosive areas!
• Measures must be taken to protect against the rated operating voltage being exceeded by more than
40% due to short-term interference voltages!
• The individual terminals may only be unplugged or removed from the Bus Terminal system if the supply
voltage has been switched off or if a non-explosive atmosphere is ensured!
• The connections of the certified components may only be connected or disconnected if the supply volt-
age has been switched off or if a non-explosive atmosphere is ensured!
• The fuses of the KL92xx/EL92xx power feed terminals may only be exchanged if the supply voltage has
been switched off or if a non-explosive atmosphere is ensured!
• Address selectors and ID switches may only be adjusted if the supply voltage has been switched off or if
a non-explosive atmosphere is ensured!
Standards
The fundamental health and safety requirements are fulfilled by compliance with the following standards:
• EN 60079-0:2012+A11:2013
• EN 60079-15:2010
• EN 60079-31:2013 (only for certificate no. KEMA 10ATEX0075 X Issue 9)
Marking
The Beckhoff fieldbus components with standard temperature range certified according to the ATEX directive
for potentially explosive areas bear one of the following markings:
II 3G KEMA 10ATEX0075 X Ex nA IIC T4 Gc Ta: 0 … +55°C
II 3D KEMA 10ATEX0075 X Ex tc IIIC T135°C Dc Ta: 0 ... +55°C
(only for fieldbus components of certificate no. KEMA 10ATEX0075 X Issue 9)
or
II 3G KEMA 10ATEX0075 X Ex nA nC IIC T4 Gc Ta: 0 … +55°C
II 3D KEMA 10ATEX0075 X Ex tc IIIC T135°C Dc Ta: 0 ... +55°C
(only for fieldbus components of certificate no. KEMA 10ATEX0075 X Issue 9)