Documentation
KL2751/KS2751, KL2761/KS2761
Single channel universal dimmer terminals
Version:
Date:
3.1.0
2017-05-29
Table of contents
Table of contents
1 Foreword ....................................................................................................................................................5
1.1 Notes on the documentation........................................................................................................... 5
1.2 Safety instructions .......................................................................................................................... 6
1.3 Documentation revision levels ........................................................................................................ 7
2 Product overview.......................................................................................................................................9
2.1 KL2751 - Introduction ..................................................................................................................... 9
2.2 KL2761 - Introduction ................................................................................................................... 10
2.3 Basic function principles ............................................................................................................... 11
2.4 Technical data .............................................................................................................................. 12
2.5 LED displays................................................................................................................................. 13
3 Mounting and wiring ...............................................................................................................................14
3.1 Installation on mounting rails ........................................................................................................ 14
3.2 Installation positions ..................................................................................................................... 16
3.3 Connection system ....................................................................................................................... 18
3.4 KL2751, KL2761 - Connection...................................................................................................... 21
3.5 Notes on operation – intended use............................................................................................... 23
4 Application examples - overview ...........................................................................................................26
4.1 KL2751-0000 - Application example............................................................................................. 26
4.2 KL2751-0011 - Application example............................................................................................. 27
5 Configuration software KS2000 .............................................................................................................28
5.1 KS2000 - Introduction ................................................................................................................... 28
5.2 Parameterization with KS2000 ..................................................................................................... 30
5.3 Register ........................................................................................................................................ 32
5.4 Settings......................................................................................................................................... 33
5.5 Process data................................................................................................................................. 35
6 Access from the user program ..............................................................................................................37
6.1 Process image .............................................................................................................................. 37
6.2 Control and status bytes with diagnosis ....................................................................................... 38
6.3 Control and status bytes without diagnosis .................................................................................. 40
6.4 Register overview ......................................................................................................................... 41
6.5 Register description ...................................................................................................................... 42
6.6 Examples of Register Communication.......................................................................................... 45
6.6.1 Example 1: reading the firmware version from Register 9 of a terminal ..........................45
6.6.2 Example 2: Writing to an user register.............................................................................45
7 TwinCAT ...................................................................................................................................................48
7.1 Programming ................................................................................................................................ 50
7.2 FB_KL27x1Config function block.................................................................................................. 50
7.3 FB_Dimmer1SwitchEco function block......................................................................................... 50
7.4 Importing a function block............................................................................................................. 51
8 Appendix ..................................................................................................................................................53
8.1 Support and Service ..................................................................................................................... 53
KL2751/KS2751, KL2761/KS2761 3Version: 3.1.0
Table of contents
KL2751/KS2751, KL2761/KS27614 Version: 3.1.0
Foreword
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®, EtherCAT®, Safety over EtherCAT®, TwinSAFE®, XFC® and XTS® 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, DE102004044764, DE102007017835 with corresponding applications or
registrations in various other countries.
The TwinCAT Technology is covered, including but not limited to the following patent applications and
patents: EP0851348, US6167425 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.
KL2751/KS2751, KL2761/KS2761 5Version: 3.1.0
Foreword
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 symbols
In this documentation the following symbols are used with an accompanying safety instruction or note. The
safety instructions must be read carefully and followed without fail!
DANGER
WARNING
CAUTION
Attention
Note
Serious risk of injury!
Failure to follow the safety instructions associated with this symbol directly endangers the
life and health of persons.
Risk of injury!
Failure to follow the safety instructions associated with this symbol endangers the life and
health of persons.
Personal injuries!
Failure to follow the safety instructions associated with this symbol can lead to injuries to
persons.
Damage to the environment or devices
Failure to follow the instructions associated with this symbol can lead to damage to the environment or equipment.
Tip or pointer
This symbol indicates information that contributes to better understanding.
KL2751/KS2751, KL2761/KS27616 Version: 3.1.0
Foreword
1.3 Documentation revision levels
Version Comment
3.1.0 • Process data description corrected
• Downloadlink " FB_Dimmer1SwitchEco" corrected
3.0.0 • Migration
• Product overview updated
• Chapter "TwinCAT" including Link to FB_KL27x1Config added
2.6.0 • Technical data updated
• Preface updated
2.5.0 • The permissible installation position and ambient temperature range in operation are
load-dependent
(refer to the chapter Mounting of terminals with increased thermal power dissipation!)
• Output of diagnostic data in the status byte and terminal internal temperature in the data
input word DataIN also for KL2751-0000 from firmware 3B
2.4.0 • KS2751 and KS2761 added
• Notes on operation expanded
• Basic function principles updated
2.3.0 • Register description and description of the KS2000 configuration software updated
• Technical data updated
• Notes on operation expanded
2.2.0 • Description of the KL2751-0011 and KL2761-0011 added
• Product overview updated
• Application example for KL2751-0011 and KL2761-0011 added
• Notes on operation expanded
2.1.0 • Notes on operation added
2.0.0 • Description of the KL2761-0000 added
• Description of the TwinCAT function block FB_Dimmer1SwitchEco added
1.2.0 • Register description updated
• Description of the KS2000 configuration software updated
• Installation instructions revised
1.1.0 • Register description updated
• Description of the KS2000 configuration software updated
• Process data description updated
1.0.0 • Description of the KS2000 configuration software expanded
• Basic function principles corrected
• English translation available
0.1 First preliminary version
KL2751/KS2751, KL2761/KS2761 7Version: 3.1.0
Foreword
Firmware and hardware versions
Version
of the
documentation
3.0.0 4H 09 4H 09 4H 06 4H 06
2.6.0 4H 09 4H 09 4H 06 4H 06
2.5.0 3B 05 3B 05 3B 02 3B 02
2.4.0 2F 03 2F 03 1F 02 1F 02
2.3.0 2E 01 2E 01 1E 00 1E 00
2.2.0 2B 01 2B 01 1B 00 1B 00
2.1.0 2A 01 - - 1A 00 - -
2.0.0 2A 01 1A 00
1.2.0 2A 01 - -
1.1.0 1C 00
1.0.0 1A 00
0.1 1A 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
KL2751-0000
KS2751-0000
Firmware Hardware Firmware Hardware Firmware Hardware Firmware Hardware
KL2751-0011
KS2751-0011
KL2761-0000
KS2761-0000
KL2761-0011
KS2761-0011
Structure of the serial number: WWYYFFHH
WW - week of production (calendar week)
YY - year of production
FF - firmware version
HH - hardware version
Example with ser. no.: 38 06 01 00:
38 - week of production 38
06 - year of production 2006
1C - firmware version 1C
00 - hardware version 00
KL2751/KS2751, KL2761/KS27618 Version: 3.1.0
2 Product overview
2.1 KL2751 - Introduction
Product overview
Fig.1: KL2751
The KL2751-0000/ KS2751-0000 dimmer terminal is intended for the direct connection of resistive, inductive
or capacitive AC lamp loads with a power rating of up to 300 VA (W). Typical lighting devices such as
incandescent lamps, inductive and electronic ballasts are detected and controlled in the right operation
mode. The dimmer terminal calculates the appropriate phase control angle in leading edge or trailing edge
phase control from the brightness values specified via the process data. The output is short-circuit-proof and
overload-proof.
The status of the load can be read in (from firmware version 3B).
A variant without power contacts (see contact Diagram, right) is also available in the KL2751-0011/
KS2751-0011. This can be used for 230 V even without a special power feed terminal.
KL2751/KS2751, KL2761/KS2761 9Version: 3.1.0
Product overview
2.2 KL2761 - Introduction
Fig.2: KL2761
The KL2761-0000/ KS2761-0000 dimmer terminal is intended for the direct connection of resistive, inductive
or capacitive AC lamp loads with a power rating of up to 600VA(W). Typical lighting devices such as
incandescent lamps, inductive and electronic ballasts are detected and controlled in the right operation
mode. The dimmer terminal calculates the appropriate phase control angle in leading edge or trailing edge
phase control from the brightness values specified via the process data. The output is short-circuit-proof and
overload-proof.
The load status can be read.
A variant without power contacts (see contact diagram, right) is also available in the KL2761-0011/
KS2761-0011. This can be used for 230V even without a special power feed terminal.
KL2751/KS2751, KL2761/KS276110 Version: 3.1.0
2.3 Basic function principles
Product overview
Fig.3: KL2751, KL2761
The KL2751 (300VA) and KL2761 (600VA) dimmer terminals are intended for the direct connection of
different AC lamp loads. Typical lighting devices such as incandescent lamps, inductive and electronic
ballasts are detected and controlled in the right operation mode. In addition to automatic load detection, the
Bus Terminal offers a short-circuit-proof and overload-proof output.
The KL2751and KL2761 are extremely compact universal dimmers in Bus Terminal format and are aimed
primarily at use in building services. The brightness values of the lighting system can be modified via the
controller process data, based on any bus system supported by the Beckhoff I/O system. However, the
universal dimmers can also be used as power switches for AC voltages. With a switchable power of
300VA(W) or 600VA(W), wear-free switching of numerous consumers is possible.
In the Automatic Recognition dimmer mode, the dimmer terminals can detect the load type and save the
result. To do this the dimmer terminal switches the load on at low power for about 5seconds after mains
voltage is applied. The dimmer terminal cannot be controlled during this period.
The dimmer terminal is short-circuit-proof. It limits the current in the event of a short circuit, thereby
protecting the load and preventing triggering of the main fuse.
Notes on operation
Also read the notes on operation [}23] in the chapter Mounting and wiring.
Attention
KL2751/KS2751, KL2761/KS2761 11Version: 3.1.0
Product overview
2.4 Technical data
Technical data KL2751-0000, KS2751-0000,
KL2751-0011, KS2751-0011
Mains voltage 230V
AC
KL2761-0000, KS2761-0000,
KL2761-0011, KS2761-0011
230V
AC
Power rating* 300VA (W), max. 1.35A 600VA (W), max. 2.7A
Permissible load types Inductive (transformers only, no ballasts for fluorescent tubes),
capacitive or resistive lamp loads
No motors!
Inductive and capacitive loads must not be mixed!
Automatic load detection
Cable length max. 100m between dimmer terminal and lamp
Types of control Leading edge phase control, trailing edge phase control, rectifier
mode (positive or negative half-wave in leading edge phase
control)
Resolution max. 7bit
Leakage current (OFF state) < 2mA
Electrical isolation 500V (K-bus /field voltage), 3750VAC (1min.)
Power supply for the electronics via the K-bus
Current consumption from K-bus typically 95mA
Bit width in the input process image 1 x 16bit data, 1 x 8bit status
Bit width in the output process image 1 x 16bit data, 1 x 8bit control
Configuration via the Bus Coupler or the controller
Weight approx. 60g
Permissible ambient temperature range
0 °C to + 55 °C (refer to the chapter Installation positions! [}16])
during operation
Permissible ambient temperature range
-25°C ... + 85°C
during storage
Permissible relative air humidity 95%, no condensation
Dimensions (W x H x D) approx. 15mm x 100mm x 70mm (width aligned: 12mm)
Mounting [}14]
on 35mm mounting rail conforming to EN60715
Vibration/shock resistance conforms to EN60068-2-6/ EN60068-2-27
EMC immunity/emission conforms to EN61000-6-2/ EN61000-6-4
Protection class IP20
Installation position
load-dependent (refer to the chapter Installation positions! [}16])
Pluggable wiring for all KSxxxx terminals
Approval CE
*) Rated output = lamp power + ballast losses
The ballast losses are typically equivalent to:
• 5% of the rated output of the ballast in the case of electronic ballasts
• 20% of the rated output of the transformer in the case of inductive ballasts
KL2751/KS2751, KL2761/KS276112 Version: 3.1.0
2.5 LED displays
Fig.4: KL2751, KL2761 - LEDs
LED Display
K-Bus run (green) off No data transfer on the K-Bus
on Data transmission on the K-bus is active
Mains (green) off • Terminal is not synchronized with the mains*
• With automatic load detection the load type has not yet been tested
on • Terminal has synchronized itself with the mains*
• Load type was detected
ON (green) off Process data are zero
on Process data are not zero
Error (red) on A load-side short circuit was detected
Product overview
*) Synchronisation with the mains can only occur if a load is connected!
Risk of electric shock!
With the Sync LED switched off mains voltage may still be present at the KL2751 output! At
WARNING
Automatic load detection display
After the load detection (shortly after the mains voltage has been switched on) the terminal signals the load
type and the selected operation mode via the LEDs.
• LED sequence green / red: Trailing edge phase control for resistive or capacitive load
• LED sequence green / red: Leading edge phase control for inductive load
this time automatic load detection and synchronisation have not yet been carried out!
KL2751/KS2751, KL2761/KS2761 13Version: 3.1.0
Mounting and wiring
3 Mounting and wiring
3.1 Installation on mounting rails
Risk of electric shock and damage of device!
Bring the bus terminal system into a safe, powered down state before starting installation,
WARNING
Assembly
disassembly or wiring of the Bus Terminals!
Fig.5: Attaching on mounting rail
The Bus Coupler and Bus Terminals are attached to commercially available 35mm mounting rails (DIN rails
according to EN60715) 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 components 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
Note
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
7.5mm under the terminals and couplers, you should use flat mounting connections (e.g.
countersunk screws or blind rivets).
KL2751/KS2751, KL2761/KS276114 Version: 3.1.0
Mounting and wiring
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 1cm 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 24V)
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 Termi-
Note
PE power contact
nals must be taken account of, since some types (e.g. analog Bus Terminals or digital 4channel Bus Terminals) 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.
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 125A.
KL2751/KS2751, KL2761/KS2761 15Version: 3.1.0
Mounting and wiring
Fig.7: Power contact on left side
Possible damage of the device
Note that, for reasons of electromagnetic compatibility, the PE contacts are capacitatively
Attention
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 230V). For insulation testing, disconnect the PE
supply line at the Bus Coupler or the Power Feed Terminal! In order to decouple further
feed points for testing, these Power Feed Terminals can be released and pulled at least
10mm from the group of terminals.
Risk of electric shock!
The PE power contact must not be used for other potentials!
WARNING
3.2 Installation positions
Constraints regarding installation position and operating temperature range
Please refer to the technical data for a terminal to ascertain whether any restrictions re-
Attention
garding the installation position and/or the operating temperature range have been specified. When installing high power dissipation terminals ensure that an adequate spacing is
maintained between other components above and below the terminal in order to guarantee
adequate ventilation!
Optimum installation position (standard)
The optimum installation position requires the mounting rail to be installed horizontally and the connection
surfaces of the EL/KL terminals to face forward (see Fig. “Recommended distances for standard installation
position”). The terminals are ventilated from below, which enables optimum cooling of the electronics through
convection. "From below" is relative to the acceleration of gravity.
KL2751/KS2751, KL2761/KS276116 Version: 3.1.0
Mounting and wiring
Fig.8: Recommended distances for standard installation position
Compliance with the distances shown in Fig. “Recommended distances for standard installation position” is
recommended.
Other installation positions
All other installation positions are characterized by different spatial arrangement of the mounting rail - see
Fig “Other installation positions”.
The minimum distances to ambient specified above also apply to these installation positions.
KL2751/KS2751, KL2761/KS2761 17Version: 3.1.0
Mounting and wiring
Fig.9: Other installation positions
3.3 Connection system
Risk of electric shock and damage of device!
Bring the bus terminal system into a safe, powered down state before starting installation,
WARNING
Overview
The Bus Terminal system offers different connection options for optimum adaptation to the respective
application:
• The terminals of KLxxxx and ELxxxx series with standard wiring include electronics and connection
level in a single enclosure.
• The terminals of KSxxxx and ESxxxx 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
disassembly or wiring of the Bus Terminals!
Fig.10: Standard wiring
The terminals of KLxxxx and ELxxxx series have been tried and tested for years.
They feature integrated screwless spring force technology for fast and simple assembly.
KL2751/KS2751, KL2761/KS276118 Version: 3.1.0
Mounting and wiring
Pluggable wiring
Fig.11: Pluggable wiring
The terminals of KSxxxx and ESxxxx series feature a pluggable connection level.
The assembly and wiring procedure for the KS series is the same as for the KLxxxx and ELxxxx series.
The KS/ES series terminals enable 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.
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 0.08mm2 and 2.5mm2 can continue to be used with the proven spring
force technology.
The overview and nomenclature of the product names for KSxxxx and ESxxxx series has been retained as
known from KLxxxx and ELxxxx series.
High Density Terminals (HD Terminals)
Fig.12: High Density Terminals
The Bus Terminals from these series with 16 connection points are distinguished by a particularly compact
design, as the packaging density is twice as large as that of the standard 12mm 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 (HD) Terminals of the KLx8xx and ELx8xx series doesn't support steady
Note
Ultrasonically "bonded" (ultrasonically welded) conductors
wiring.
Ultrasonically “bonded" conductors
It is also possible to connect the Standard and High Density Terminals with ultrasonically
Note
KL2751/KS2751, KL2761/KS2761 19Version: 3.1.0
"bonded" (ultrasonically welded) conductors. In this case, please note the tables concerning the wire-size width [}20] below!
Mounting and wiring
Wiring
Terminals for standard wiring ELxxxx/KLxxxx and for pluggable wiring ESxxxx/KSxxxx
Fig.13: Mounting a cable on a terminal connection
Up to eight connections enable the connection of solid or finely stranded cables to the Bus Terminals. The
terminals are implemented in spring force technology. Connect the cables as follows:
1. Open a spring-loaded terminal by slightly pushing with a screwdriver or a rod into the square opening
above the terminal.
2. The wire can now be inserted into the round terminal opening without any force.
3. The terminal closes automatically when the pressure is released, holding the wire securely and permanently.
Terminal housing ELxxxx, KLxxxx ESxxxx, KSxxxx
Wire size width 0.08 ... 2,5mm
2
0.08 ... 2.5mm
2
Wire stripping length 8 ... 9mm 9 ... 10mm
High Density Terminals ELx8xx, KLx8xx (HD)
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 contact 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 (conductors with a wire end sleeve) 0.14... 0.75mm
Wire size width (single core wires) 0.08 ... 1.5mm
Wire size width (fine-wire conductors) 0.25 ... 1.5mm
Wire size width (ultrasonically “bonded" conductors)
only 1.5mm2 (see notice [}19]!)
2
2
2
Wire stripping length 8 ... 9mm
KL2751/KS2751, KL2761/KS276120 Version: 3.1.0
Shielding
Shielding
Analog sensors and actors should always be connected with shielded, twisted paired wires.
Note
3.4 KL2751, KL2761 - Connection
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!
WARNING
Mounting and wiring
Fig.14: Connection taking KL2751 as an example
Terminal point No. KL2751-0000,
KL2761-0000, connection for
Output 1 Load (internally connected with terminal point 5) Load (internally connected with terminal point 5)
L1 2 Phase (internally connected with terminal point 6
and power contact for L1)
N 3 Neutral conductor (internally connected with terminal
point 7 and power contact for N)
PE 4 Protective conductor (internally connected with ter-
minal point 8 and power contact for PE)
Output 5 Load (internally connected with terminal point 1) Load (internally connected with terminal point 1)
L1 6 Phase (internally connected with terminal point 2
and power contact for L1)
N 7 Neutral conductor (internally connected with terminal
point 3 and power contact for N)
PE 8 Protective conductor (internally connected with ter-
minal point 4 and power contact for PE)
KL2751-0011,
KL2761-0011, connection for
Phase (internally connected with terminal point 6)
Neutral conductor (internally connected with terminal
point 7)
Protective conductor (internally connected with terminal
point 8)
Phase (internally connected with terminal point 2)
Neutral conductor (internally connected with terminal
point 3)
Protective conductor (internally connected with terminal
point 4)
KL2751/KS2751, KL2761/KS2761 21Version: 3.1.0
Mounting and wiring
Power feed terminal
It is imperative that you use a power feed terminal (e.g.: KL9150, KL9160, KL9250, KL9260) designed for
230VAC to supply mains voltage (230VAC) into the power contacts!
Risk of damage to the device!
Bus Couplers, Bus Terminal controllers and power supply terminals for 24V are not suit-
Attention
Several dimmer terminals can be operated on one power feed terminal.
able for the supply of mains voltage into the power contacts! They are designed only for
voltages up to 24V and would be destroyed if 230VAC is applied at their power contacts!
Separation terminal
If 24V and 230VAC are to be used on the power contacts in a Bus Terminal block, the
Note
Short-circuit limitation
The dimmer terminals are equipped with short-circuit current limitation. The current is limited to approx. 10A
to 15A. Normally triggering of the fuse is therefore prevented.
The short circuit current flows for less than 0.5ms and is switched on automatically. After a short circuit was
detected the KL2751 tries to switch the system on again and tests the line with a low voltage. If the short
circuit has been eliminated, the dimmer terminal returns to the previous dimmer value.
KL9080 separation terminal can be used in order to clearly separate the potential blocks
visually from each other.
A short circuit on the line should always be avoided and never deliberately caused! The components in the
dimmer terminal are stressed by short circuits. A large number of short circuits will shorten the service life of
the dimmer terminal!
Fuses
The dimmer terminal may be protected with fuses up to 10A.
The dimmer terminal protects itself against destruction due to short circuit and overload. This built-in
protection acts on the connection line between dimmer terminal and load in the event of a short circuit.
Risk of damage to the device!
However, overload protection must still be provided. The fine-wire fuse often used in de-
Attention
vices with transformers must not be bridged or changed in its value. This could lead to
overheating of the transformer.
KL2751/KS2751, KL2761/KS276122 Version: 3.1.0
3.5 Notes on operation – intended use
Supply
• Mains supply
No upstream transformers!
The KL2751 and KL2761 dimmer terminals are intended for direct operation on mains sup-
Attention
plies (230VAC) without upstream transformer.
Overly large inductances in the supply line to the dimmer terminal will lead to its destruction
in the event of a short circuit!
Automatic load detection does not operate reliably with an upstream transformer.
Power feed terminals
It is imperative that you use a power feed terminal (e.g.: KL9150, KL9160, KL9250,
KL9260) designed for 230VAC to input mains voltage into the power contacts of the dimmer
terminals
KL2751-0000, KL2761-0000,
KS2751-0000, KS2761-0000!
See application example for KL2751-0000 [}26].
The supply in of mains voltage without a power feed terminal is permissible only for dimmer
terminals without power contacts:
KL2751-0011, KL2761-0011, KS2751-0011, KS2761-0011!
See application example for KL2751-0011 [}27].
Minimum interruption of the mains voltage supply
Any interruption in the mains voltage supply to the dimmer terminal may not be shorter than
3seconds (e.g. an automatic circuit-breaker switching off and on again)!
In the case of shorter interruptions the dimmer does not lose its mains synchronization and
can (depending on the starting edge) operate the load for a short while with the wrong type
of control. In the case of operation of wound transformers this can lead to the destruction of
the dimmer terminal!
Mounting and wiring
• Ripple control pulses
Malfunction due to ripple control pulses
External ripple control pulses on the mains supply can cause brightness fluctuations. Ripple
Note
Load
• Permissible loads
control pulses with higher amplitudes can trigger the dimmer terminal's short circuit detection. The dimmer terminal then switches the load off and ramps up again. The light is
switched off for several seconds.
Use audio frequency filters in the supply line to the dimmer terminal in order to avoid these
effects.
KL2751/KS2751, KL2761/KS2761 23Version: 3.1.0
Mounting and wiring
No motors!
Use the dimmer terminals for lamp loads only. Motor loads can fully destroy the terminal.
Attention
• Operation modes
Please consider that the wiring of the dimmer terminal output to a power socket could lead
to the use of any type of load.
For motor loads, please use the KL2791 (single-channel speed controller for AC motors).
Do not mix capacitive and inductive loads!
Capacitive and inductive loads must not be mixed on one dimmer terminal!
For example, an electronic ballast and a transformer must not be operated together on one
dimmer terminal!
You may operate an ohmic load (e.g. an incandescent lamp) together with either a capacitive or an inductive load.
No additional switches!
Do not connect any additional switches between
Use the right operation mode!
Use only the intended operation mode for each type of load
Attention
• the dimmer terminal and the load
• the dimmer terminal and the ballast
• the ballast and the lamp
• capacitive loads may only be controlled with trailing edge phase control.
• inductive loads may only be controlled with leading edge phase control.
ð Even if the manufacturer, for example, of an electronic ballast allows this capacitive
load to be controlled with leading edge phase control, we urgently recommend that
you use trailing edge phase control for this!
ð If a load is controlled with the wrong operation mode, this can lead to the destruction of
the dimmer terminal or the load!
A typical result is the overheating of the input capacitor of an electronic ballast that is
controlled with leading edge phase control.
In addition, the operation modes Rectifier-positive and Rectifier-negative (both with leading edge phase
control) are available for special applications (e.g. vibrator, vibrating conveyor).
Automatic load detection
• Long cable lengths
Long cable lengths
The manual preselection of the operation mode (dimmer mode [}34]) is recommended if
Note
• User program
there are long cables between the dimmer terminal and load. Automatic load detection may
fail, since inductive and capacitive line influences may lead to misinterpretation of the load.
In addition, please note the maximum permissible cable length! [}12]
Parameterization of the dimmer terminal on starting the PLC
If you do not operate the dimmer terminal with the default values (e.g. for dimmer mode,
Note
ramp time, etc.) it is recommended to initialize the respective registers with the deviating
values from the user program when starting the PLC. This saves the service personnel
having to perform the complicated manual initialization when exchanging terminals and
also helps to avoid undesirable error states.
• Wound transformer with no load on the secondary side
KL2751/KS2751, KL2761/KS276124 Version: 3.1.0
No open-circuit transformers!
The automatic load detection, which the dimmer terminal performs on the connected load
Attention
Gentle operation of low-voltage lamps
when the mains voltage is switched on, fails if a wound transformer is connected that has
no load connected to its secondary side.
Make sure when switching the mains voltage on that the terminal is not operated on an
open-circuit transformer! Also pay attention to this when replacing lamps connected on the
secondary side!
Low-voltage, high-power lamps
For the operation of low-voltage, high-power lamps (e.g. halogen lamps, 12V, 100W,
Note
GY6.35 via ballast*), enter a higher ramp time [}34] for the dimming ramp than the default value of 500ms!
Since the filament in these lamps is considerably thicker than in lamps with a lower power,
it behaves quite sluggishly and must therefore bear the high starting current for a longer period. This effect leads to premature ageing of the lamp. You can counteract this premature
ageing by setting a flatter dimming ramp.
*) The ballast must be connected between the dimmer terminal and the halogen lamp (see
mains supply [}23])!
Mounting and wiring
KL2751/KS2751, KL2761/KS2761 25Version: 3.1.0
Application examples - overview
4 Application examples - overview
• KL2751-0000, KL2761-0000 [}26]: Dimmer terminals with power contacts
• KL2751-0011, KL2761-0011 [}27]: Dimmer terminals without power contacts
• FB_Dimmer1SwitchEco [}50] function block
4.1 KL2751-0000 - Application example
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,
WARNING
Power feed terminal
It is imperative that you use a power feed terminal (e.g.: KL9150, KL9160, KL9250, KL9260) designed for
230VAC to supply mains voltage (230VAC) into the power contacts!
Attention
disassembly or wiring of the Bus Terminals!
Risk of damage to the device!
Bus Couplers, Bus Terminal controllers and power supply terminals for 24 V are not suitable for the supply of mains voltage into the power contacts! They are designed only for
voltages up to 24 V and would be destroyed if 230 VAC is applied at their power contacts!
The example shows the control of an incandescent lamp by a KL2751-0000. The mains voltage (230VAC) is
fed to the power contacts via the KL9160 power feed terminal.
Several dimmer terminals can be operated on one power feed terminal.
Fig.15: KL2751-0000 connection example
KL2751/KS2751, KL2761/KS276126 Version: 3.1.0
Application examples - overview
4.2 KL2751-0011 - Application example
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,
WARNING
Supply in of the mains voltage without a power feed terminal
Attention
The example shows the control of an incandescent lamp by a KL2751-0011. The mains voltage (230VAC) is
fed directly to the KL2751-0011.
disassembly or wiring of the Bus Terminals!
Risk of damage to the device!
The supply in of mains voltage without a power feed terminal is permissible only for dimmer
terminals without power contacts:
KL2751-0011, KL2761-0011,
KS2751-0011, KS2761-0011
Fig.16: KL2751-0011 - Application example
KL2751/KS2751, KL2761/KS2761 27Version: 3.1.0
Configuration software KS2000
5 Configuration software KS2000
5.1 KS2000 - Introduction
The KS2000 configuration software permits configuration, commissioning and parameterization of bus
couplers, of the affiliated bus terminals and of Fieldbus Box Modules. The connection between bus coupler/
Fieldbus Box Module and the PC is established by means of the serial configuration cable or the fieldbus.
Fig.17: KS2000 configuration software
Configuration
You can configure the Fieldbus stations with the Configuration Software KS2000 offline. That means, setting
up a terminal station with all settings on the couplers and terminals resp. the Fieldbus Box Modules can be
prepared before the commissioning phase. Later on, this configuration can be transferred to the terminal
station in the commissioning phase by means of a download. For documentation purposes, you are provided
with the breakdown of the terminal station, a parts list of modules used and a list of the parameters you have
modified. After an upload, existing fieldbus stations are at your disposal for further editing.
Parameterization
KS2000 offers simple access to the parameters of a fieldbus station: specific high-level dialogs are available
for all bus couplers, all intelligent bus terminals and Fieldbus Box modules with the aid of which settings can
be modified easily. Alternatively, you have full access to all internal registers of the bus couplers and
intelligent terminals. Refer to the register description for the meanings of the registers.
KL2751/KS2751, KL2761/KS276128 Version: 3.1.0
Configuration software KS2000
Commissioning
The KS2000 software facilitates commissioning of machine components or their fieldbus stations: Configured
settings can be transferred to the fieldbus modules by means of a download. After a login to the terminal
station, it is possible to define settings in couplers, terminals and Fieldbus Box modules directly online. The
same high-level dialogs and register access are available for this purpose as in the configuration phase.
The KS2000 offers access to the process images of the bus couplers and Fieldbus Box modules.
• Thus, the coupler's input and output images can be observed by monitoring.
• Process values can be specified in the output image for commissioning of the output modules.
All possibilities in the online mode can be used in parallel with the actual fieldbus mode of the terminal
station. The fieldbus protocol always has the higher priority in this case.
KL2751/KS2751, KL2761/KS2761 29Version: 3.1.0
Configuration software KS2000
5.2 Parameterization with KS2000
Connect the configuration interface of your fieldbus coupler with the serial interface of your PC via the
configuration cable and start the KS2000 configuration software.
Click on the Login button. The configuration software will now load the information for the connected
fieldbus station.
In the sample shown, this is
• a BK9000 Bus Coupler for Ethernet
• a KL9160 power feed terminal for 230 V with diagnostics
• a KL2751 dimmer terminal
• a KL9010 bus end terminal
Fig.18: Display of the fieldbus station in KS2000
The left-hand KS2000 window displays the terminals of the fieldbus station in a tree structure.
The right-hand KS2000 window contains a graphic display of the fieldbus station terminals.
In the tree structure of the left-hand window, click on the plus-sign next to the terminal whose parameters
you wish to change (item 2 in the example).
KL2751/KS2751, KL2761/KS276130 Version: 3.1.0
Fig.19: KS2000 tree branches for channel 1 of the KL2535
For the KL5151, the branches Register, Settings and ProcData are displayed:
• Register [}32] permits direct access to the registers of the KL2751.
• Under Settings [}33] you find dialog boxes for parameterization the KL2751.
• ProcData [}35] displays the KL2751 process data.
Configuration software KS2000
KL2751/KS2751, KL2761/KS2761 31Version: 3.1.0
Configuration software KS2000
5.3 Register
Under Register you can directly access the registers of the dimmer terminal. The meaning of the register is
explained in the register overview [}41].
The following picture shows the registers of the KL2751.
Fig.20: Register view in KS2000
KL2751/KS2751, KL2761/KS276132 Version: 3.1.0
Configuration software KS2000
5.4 Settings
The dialog mask for the parameterization of the KL2751/KL2761 can be found under Settings.
Fig.21: Settings via KS2000
Operating mode
• Watchdog timer active (R32.2 [}43])
Here you can deactivate the watchdog (default: active).
• Watchdog timer active (R32.2 [}43])
Here you can activate user scaling (default: inactive).
• Dimming ramp absolute (R32.3 [}43])
Here you can switch the dimming ramp from relative (default) to absolute.
◦ With the relative dimming ramp, the dimmer terminal requires the preset ramp time [}34] to
ramp up the brightness from 0 to full scale control.
◦ With the absolute dimming ramp the dimmer terminal requires the preset ramp time [}34] to
perform the current specified brightness change.
Absolute dimming ramp
The use of the absolute dimming ramp is useful, for example, when you want to control two
Note
lamps with two dimmer terminals synchronously.
Sample:
Lamp 1 is lit with 10% brightness, lamp 2 with 30% brightness.
Dimmer terminal 1 should now control lamp 1 and dimmer terminal 2 lamp 2 up to 50%
brightness.
With an absolute dimming ramp, both lamps reach 50% brightness at the same time.
Register values
• User offset (R33 [}43])
You can specify the offset for the user-scaling here (default: 0).
• User gain (R34 [}43])
Here you can specify the user scaling gain (default: 1).
KL2751/KS2751, KL2761/KS2761 33Version: 3.1.0
Configuration software KS2000
• Ramp time (R35 [}43])
You can select the ramp time here (default 500ms).
Permissible values: 50ms,100ms,200ms,500ms,1s,2s,5s and 10s
• Timeout(R36 [}43])
Here you can specify the timeout time for detecting a fieldbus error (default: 100ms).
• Light value for timeout (on) (R37 [}44])
Here you can specify the light value for a timeout at which the load was switched on when it occurred
(default: 50%).
• Light value for timeout (off) (R38 [}44])
Here you can specify the light value for a timeout at which the load was switched off when it occurred
(default: 0%).
• Dimmer mode (R39 [}44])
Here you can specify the dimmer mode:
◦ Automatic recognition*: The dimmer terminal automatically detects the type of load (capacitive/
resistive or inductive) and switches to trailing edge phase control or leading edge phase
control (default).
◦ Trailing edge control: typically used for capacitive loads (e.g. electronic ballasts) or ohmic
loads (e.g. bulbs)
◦ Leading edge control: typically used for inductive loads (e.g. transformers, conventional
ballasts)
◦ Rectifier, positive: only the positive half-wave is switched through to the load with leading edge
phase control
Do not use this operation mode with firmware version 2E [}7] of the KL2751 or with firmware
version 1E [}7] of the KL2761!
Instead, use the operation mode Rectifier mode, negative with these firmware versions!
◦ Rectifier, negative: only the negative half-wave is switched through to the load with leading
edge phase control
*) Automatic recognition and long cable lengths
Manual preselection of the operation mode is recommended in the case of long cables be-
Note
• Behavior after short circuit (R40 [}44])
Here you can define the behavior of the dimmer terminal following a short circuit on the load output.
The dimmer terminal is equipped with short-circuit current limitation. The current is limited to approx.
10A to 15A. Normally triggering of the fuse is therefore prevented. The short circuit current flows for
less than 0.5ms and is switched on automatically.
• Mains frequency (R41 [}44])
Here you can set the dimmer terminal to your mains frequency, default: 50Hz
tween the dimmer terminal and the load.
Automatic load detection may fail, since inductive and capacitive line influences may lead
to misinterpretation of the load.
◦ Remains switched off:
The user has to switch the system on again after a short circuit.
◦ Switch on again (default):
Following the detection of a short circuit, the dimmer terminal attempts to resume operation
and tests the line with a low voltage. If the short circuit has been eliminated, the dimmer
terminal returns to the previous dimmer value.
KL2751/KS2751, KL2761/KS276134 Version: 3.1.0
Configuration software KS2000
5.5 Process data
The Status byte (Status), the Control byte (Ctrl) and the process data (Data) are displayed in a tree structure
under ProcData.
Fig.22: Process Data field
The reading glasses mark the data that are currently graphically displayed in the History field.
Fig.23: History field
The current input values are displayed numerically in the Value field.
Fig.24: Value field - display of the input value
Output values can be modified through direct input or by means of the fader control.
Fig.25: Value field - modification of the output values
Danger for persons, the environment or devices!
Note that changing initial values (forcing them) can have a direct effect on your automation
CAUTION
After pressing the Settings button you can set the format of the numerical display to hexadecimal, decimal or
binary.
KL2751/KS2751, KL2761/KS2761 35Version: 3.1.0
application.
Only modify these initial values if you are certain that the state of your equipment permits it,
and that there will be no risk to people or to the machine!
Configuration software KS2000
Fig.26: Setting the display
KL2751/KS2751, KL2761/KS276136 Version: 3.1.0
Access from the user program
6 Access from the user program
6.1 Process image
The KL2751 and KL2761 appear in the complex process image with 3 bytes of input data and 3 bytes of
output data. These are organized as follows:
Byte offset (without word alignment)
0 0 Byte SB CB
1 2 Word DataIN DataOUT
The KL2751 and KL2761 appear in the compact process image with no input data and 2 bytes of output
data. These are organized as follows:
Byte offset (without word alignment)
0 0 Word - DataOUT
*) Word alignment: The Bus Coupler places values on even byte addresses
Legend
SB: Status byte
CB: Control byte
DataIN: Input data word
DataOUT: Output data word
Process data
• DataOUT
In process data mode the output word DataOUT controls the output power of the dimmer terminal.
Valid values are 0
• DataIN
In process data mode the input word DataIN contains the internal temperature of the dimmer terminal
in degrees Celsius (KL2751/KS2751: only with firmware version 3B or higher)
Byte offset (with
word alignment*)
Byte offset (with
word alignment*)
to 32767
dec
dec
Format Input data Output data
Format Input data Output data
.
KL2751/KS2751, KL2761/KS2761 37Version: 3.1.0
Access from the user program
6.2 Control and status bytes with diagnosis
This description applies to
• KL2751-0000/ KS2751-0000 with firmware versions 3B or higher
• KL2751-0011/ KS2751-0011 with firmware versions 3B or higher
• KL2761-0000/ KS2761-0000
• KL2761-0011/ KS2761-0011
Process data mode
Control byte (for process data mode)
The control byte (CB) is located in the output image [}37], and is transmitted from the controller to the
terminal.
Bit CB1.7 CB1.6 CB1.5 CB1.4 CB1.3 CB1.2 CB1.1 CB1.0
Name RegAccess - - - - - - ManualAutoDete
ct
Legend
Bit Name Description
CB17 RegAccess 0
CB1.6 to CB1.1 - 0
CB1.0 ManualAutoDetect 1
Register communication off (process data mode)
bin
reserved
bin
manually start automatic load type detection (rising edge)
bin
Status byte (for process data mode)
The status byte (SB) is located in the input image [}37], and is transmitted from terminal to the controller.
Bit SB1.7 SB1.6 SB1.5 SB1.4 SB1.3 SB1.2 SB1.1 SB1.0
Name RegAccess Error Temperature
Overload Operation mode Synchronous
warning
Legend
Bit Name Description
SB1.7 RegAccess 0
SB1.6 Error 1
SB1.5 Temperature warning 1
Acknowledgement for process data mode
bin
A load-side short circuit was detected
bin
Overtemperature detected (> 80 °C): the process data are limited to
bin
20% (the limit is reset automatically when the temperature falls below
60 °C)
SB1.4 Overload 1
SB1.3
Operation mode manually set or automatically detected operation mode
to
SB1.1
SB1.0 Synchronous 0
Overload detected (e.g. when switching higher loads on)
bin
0
automatic load type detection active
dec
1
Trailing edge phase control
dec
2
Leading edge phase control
dec
3
Rectifier mode (positive half-wave with leading edge phase control)
dec
4
Rectifier mode (negative half-wave with leading edge phase control)
dec
Terminal is not synchronized with the mains or a short circuit was
bin
detected on the load side
1
Terminal has synchronized itself with the mains*
bin
KL2751/KS2751, KL2761/KS276138 Version: 3.1.0
Access from the user program
Register communication
Control byte (for register communication)
The control byte (CB) is located in the output image [}37], and is transmitted from the controller to the
terminal.
Bit CB1.7 CB1.6 CB1.5 CB1.4 CB1.3 CB1.2 CB1.1 CB1.0
Name RegAccess R/W Reg. no.
Legend
Bit Name Description
CB1.7 RegAccess 1
CB1.6 R/W 0
CB1.5
Reg. no. Register number:
to
CB1.0
Register communication switched on
bin
Read access
bin
1
Write access
bin
Enter the number of the register [}41] that you
• want to read with input data word DataIn [}37] or
• want to write with output data word DataOut [}37].
Status byte (for register communication)
The status byte (SB) is located in the input image [}37], and is transmitted from terminal to the controller.
Bit SB1.7 SB1.6 SB1.5 SB1.4 SB1.3 SB1.2 SB1.1 SB1.0
Name RegAccess R/W Reg. no.
Legend
Bit Name Description
SB1.7 RegAccess 1
SB1.6 R 0
SB1.5
Reg. no. Number of the register that was read or written.
Acknowledgement for register access
bin
Read access
bin
to
SB1.0
KL2751/KS2751, KL2761/KS2761 39Version: 3.1.0
Access from the user program
6.3 Control and status bytes without diagnosis
This description applies to
• KL2751-0000/ KS2751-0000 with firmware versions lower than 3B
• KL2751-0011/ KS2751-0011 with firmware versions lower than 3B
Process data mode
Control and status byte have no functionality in process data mode.
Register communication
Control byte (for register communication)
The control byte (CB) is located in the output image [}37], and is transmitted from the controller to the
terminal.
Bit CB1.7 CB1.6 CB1.5 CB1.4 CB1.3 CB1.2 CB1.1 CB1.0
Name RegAccess R/W Reg. no.
Legend
Bit Name Description
CB1.7 RegAccess 1
CB1.6 R/W 0
CB1.5
Reg. no. Register number:
to
CB1.0
Register communication switched on
bin
Read access
bin
1
Write access
bin
Enter the number of the register [}41] that you
• want to read with input data word DataIn [}37] or
• want to write with output data word DataOut [}37].
Status byte (for register communication)
The status byte (SB) is located in the input image [}37], and is transmitted from terminal to the controller.
Bit SB1.7 SB1.6 SB1.5 SB1.4 SB1.3 SB1.2 SB1.1 SB1.0
Name RegAccess R/W Reg. no.
Legend
Bit Name Description
SB1.7 RegAccess 1
SB1.6 R 0
SB1.5
Reg. no. Number of the register that was read or written.
Acknowledgement for register access
bin
Read access
bin
to
SB1.0
KL2751/KS2751, KL2761/KS276140 Version: 3.1.0
Access from the user program
6.4 Register overview
The registers are used for the parameterization of the dimmer terminal. They can be read or written by
means of register communication.
Register no. Comment Default value R/W Memory
R0 reserved - - - -
... ... ... ... ... ...
R6 reserved - - - -
R7 [}42]
R8 [}42]
Command register 0x0000 0
dec
Terminal type KL2751-0000 0x0ABF 2751
dec
KL2751-0011
KL2761-0000 0x0AC9 2761
dec
KL2761-0011
R9 [}42]
R10 Multiplex shift register 0x0118 280
R11 Signal channels 0x0118 280
R12 Minimum data length 0x9800 38912
R13 Data structure 0x0004 4
Firmware version e.g. 0x3141 e.g. 1A
dec
dec
dec
ASCII
dec
R14 reserved - - - -
R15 Alignment register 0x7F80 32640
R16 [}42]
Hardware version number e.g. 0x0000 e.g. 0
dec
dec
R17 reserved - - - -
... ... ... ... ... ...
R28 reserved - - - -
R29 Terminal
type, special
version
KL2751-0000 0x0000 0
KL2751-0011 0x000B 11
KL2761-0000 0x0000 0
KL2761-0011 0x000B 11
dec
dec
dec
dec
R30 reserved - - - -
R31 [}42]
R32 [}43]
R33 [}43]
R34 [}43]
R35 [}43]
R36 [}43]
R37 [}44]
R38 [}44]
R39 [}44]
R40 [}44]
R41 [}44]
Code word register 0x0000 0
Feature register 0x0000 0
User scaling - offset 0x0000 0
User scaling - gain 0x0100 256
Ramp time 0x0003 3
Watchdog Timeout 0x000A 10
dec
dec
dec
dec
dec
dec
Light value for timeout (on) 0x3FFF 16383
Light value for timeout (off) 0x0000 0
Dimmer mode 0x0000 0
Behaviour after short circuit 0x0001 1
Mains
frequency
KL2751-0000 0x0000 0
KL2751-0011 0x0000 0
KL2761-0000 0x0000 0
KL2761-0011 0x0000 0
dec
dec
dec
(50Hz) R/W EEPROM
dec
(50Hz)
dec
(50Hz)
dec
(50Hz)
dec
dec
R42 reserved - - - -
... ... ... ... ... ...
R63 reserved - - - -
R/W RAM
R ROM
R ROM
R ROM
R ROM
R ROM
R ROM
R/W RAM
R/W EEPROM
R ROM
R/W RAM
R/W EEPROM
R/W EEPROM
R/W EEPROM
R/W EEPROM
R/W EEPROM
R/W EEPROM
R/W EEPROM
R/W EEPROM
R/W EEPROM
KL2751/KS2751, KL2761/KS2761 41Version: 3.1.0
Access from the user program
6.5 Register description
All registers can be read or written via register communication. They are used for the parameterization of the
terminal.
Basic configuration is also possible via the PLC using the FB_KL27x1Config function block.
R7: Command register
User code word
For the following commands to be executed, it is first necessary for the user code word,
Note
• Command 0x7000: Restore Factory Default Settings
Entering 0x7000 in register R7 restores the factory settings for the following registers:
R33: 0
R34: 256
R35: 3
R36: 10
R37: 16383
R38: 0
R39: 0
R40: 1
R41: 0
0x1235, to be entered into register R31 [}42].
dec
dec
dec
dec
dec
dec
dec
dec
(KL2751-0000, KL2751-0011, KL2761-0000, KL2761-0011)
dec
R8: Terminal type
The terminal identifier is contained in register R8: KL2751 or KL2761.
R9: Firmware version
Register R9 contains the ASCII coding of the terminal's firmware version, e.g. 0x3141='1A'. The '0x31'
corresponds here to the ASCII character '1', while the '0x41' represents the ASCII character 'A'.
This value cannot be changed.
R16: Hardware version number
Register R16 contains the hardware version of the terminal.
R29: Terminal type, special version
Register R29 contains the special version of the terminal.
R31: Code word register
If you write values into the user registers without first entering the user code word (0x1235) into the code
word register, the terminal will not accept the supplied data. The code word is reset if the terminal is
restarted.
KL2751/KS2751, KL2761/KS276142 Version: 3.1.0
Access from the user program
R32: Feature register
The feature register specifies the terminal's configuration.
Bit R32.15 R32.14 R32.13 R32.12 R32.11 R32.10 R32.9 R32.8
Name - - - - - - - -
Bit R32.7 R32.6 R32.5 R32.4 R32.3 R32.2 R32.1 R32.0
Name - - - - DimRamp disWatchdog - enUserScale
Legend
Bit Name Description Default
R32.1
- reserved
5 R32.4
R32.3 DimRamp 0
Dimming ramp relative:
bin
0
bin
The time in register R35 relates to the entire process data range
(0
-32767
dec
time to control from "off" (0
1
Dimming ramp absolute [}33]:
bin
). This means that the dimmer terminal requires this
dec
) to full scale control (32767
dec
dec
).
The time in register R35 relates to the current process data change.
This means that the dimmer terminal requires this time in order to
execute the current brightness change.
R32.2 disWatchdog 1
Internal watchdog (time adjustable) deactivated 0
bin
bin
R32.1 - reserved
R32.0 enUserScale 1
User scaling active (see R33 [}43]+ R34 [}43])
bin
0
bin
R33: User scaling - offset
The offset of the user scaling when the user scaling (R32.0 [}43]=1
) is enabled is entered in this register
bin
(default: 0).
R34: User scaling - gain
The gain of the user scaling when the user scaling (R32.0 [}43]=1
) is enabled is entered in this register.
bin
Example values:
128
= 0x80 = factor 0.5
dec
256
= 0x100 = factor 1.0 (default)
dec
512
= 0x200 = factor 2.0
dec
R35: Ramp time
This register specifies the time required
• to ramp up from 0 to 32767 (full scale control of the angle) (when R32.3=0
• to execute the current brightness change (when R32.3=1
0
:50ms
dec
1
:100ms
dec
2
:200ms
dec
3
:500ms (default)
dec
4
:1s
dec
5
:2s
dec
6
:5s
dec
7
:10s
dec
).
bin
) or
bin
R36: Watchdog Timeout
This register specifies the timeout in the event of a fieldbus error. The unit is 10ms (default: 10
KL2751/KS2751, KL2761/KS2761 43Version: 3.1.0
=100ms).
dec
Access from the user program
R37: Light value for timeout (on)
This register specifies the light value that is output in the case of a fieldbus error and current process data >
0 (default: 16383
The unit is 1. (R32.2 [}43]=1
dec
).
).
bin
R38: Light value for timeout (off)
This register specifies the light value that is output in the case of a fieldbus error and current process data =
0 (default: 0
The unit is 1. (R32.2 [}43]=1
dec
).
).
bin
R39: Dimmer mode
This register specifies the dimmer mode:
0
:automatic detection (default)
dec
1
:Trailing edge phase control
dec
2
:Leading edge phase control
dec
3
:Rectifier mode, positive (positive half-wave with leading edge phase control)
dec
Do not use this operation mode with firmware version [}7] 2E of the KL2751 or with firmware version [}7]
1E of the KL2761!
Instead, use the operation mode Rectifier mode, negative with these firmware versions!
4
:Rectifier mode, negative (negative half-wave with leading edge phase control)
dec
R40: Behavior after short circuit
This register specifies the behavior after a short circuit:
0
:Remains switched off:
dec
1
:switch on again (default):
dec
R41: Mains frequency
This register specifies the mains frequency:
0
:50Hz
dec
1
:60Hz
dec
Default value: 50Hz
KL2751/KS2751, KL2761/KS276144 Version: 3.1.0
Access from the user program
6.6 Examples of Register Communication
The numbering of the bytes in the examples corresponds to the display without word alignment.
6.6.1 Example 1: reading the firmware version from Register 9 of a
terminal
Output Data
Byte 0: Control byte Byte 1: DataOUT1, high byte Byte 2: DataOUT1, low byte
0x89 (1000 1001
Explanation:
• Bit 0.7 set means: Register communication switched on.
• Bit 0.6 not set means: reading the register.
• Bits 0.5 to 0.0 specify the register number 9 with 00 1001
• The output data word (byte 1 and byte 2) has no meaning during read access. To change a register,
write the required value into the output word.
) 0xXX 0xXX
bin
.
bin
Input Data (answer of the bus terminal)
Byte 0: Status byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0x89 0x33 0x41
Explanation:
• The terminal returns the value of the control byte as a receipt in the status byte.
• The terminal returns the firmware version 0x3341 in the input data word (byte 1 and byte 2). This is to
be interpreted as an ASCII code:
◦ ASCII code 0x33 represents the digit 3
◦ ASCII code 0x41 represents the letter A
The firmware version is thus 3A.
6.6.2 Example 2: Writing to an user register
Code word
In normal mode all user registers are read-only with the exception of Register 31. In order
Note
to deactivate this write protection you must write the code word (0x1235) into Register 31. If
a value other than 0x1235 is written into Register 31, write protection is reactivated. Please
note that changes to a register only become effective after restarting the terminal (poweroff/power-on).
I. Write the code word (0x1235) into Register 31.
Output Data
Byte 0: Control byte Byte 1: DataOUT1, high byte Byte 2: DataOUT1, low byte
0xDF (1101 1111
Explanation:
• Bit 0.7 set means: Register communication switched on.
• Bit 0.6 set means: writing to the register.
• Bits 0.5 to 0.0 specify the register number 31 with 01 1111
KL2751/KS2751, KL2761/KS2761 45Version: 3.1.0
) 0x12 0x35
bin
.
bin
Access from the user program
• The output data word (byte 1 and byte 2) contains the code word (0x1235) for deactivating write
protection.
Input Data (answer of the bus terminal)
Byte 0: Status byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0x9F (1001 1111
) 0xXX 0xXX
bin
Explanation:
• The terminal returns a value as a receipt in the status byte that differs only in bit 0.6 from the value of
the control byte.
• The input data word (byte 1 and byte 2) is of no importance after the write access. Any values still
displayed are invalid!
II. Read Register 31 (check the set code word)
Output Data
Byte 0: Control byte Byte 1: DataOUT1, high byte Byte 2: DataOUT1, low byte
0x9F (1001 1111
) 0xXX 0xXX
bin
Explanation:
• Bit 0.7 set means: Register communication switched on.
• Bit 0.6 not set means: reading the register.
• Bits 0.5 to 0.0 specify the register number 31 with 01 1111
.
bin
• The output data word (byte 1 and byte 2) has no meaning during read access.
Input Data (answer of the bus terminal)
Byte 0: Status byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0x9F (1001 1111
) 0x12 0x35
bin
Explanation:
• The terminal returns the value of the control byte as a receipt in the status byte.
• The terminal returns the current value of the code word register in the input data word (byte 1 and byte
2).
III. Write to Register 32 (change contents of the feature register)
Output Data
Byte 0: Control byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0xE0 (1110 0000
) 0x00 0x02
bin
Explanation:
• Bit 0.7 set means: Register communication switched on.
• Bit 0.6 set means: writing to the register.
• Bits 0.5 to 0.0 indicate register number 32 with 10 0000
.
bin
• The output data word (byte 1 and byte 2) contains the new value for the feature register.
Observe the register description!
The value of 0x0002 given here is just an example! The bits of the feature register change
CAUTION
the properties of the terminal and have a different meaning, depending on the type of terminal. Refer to the description of the feature register of your terminal (chapter Register de-
scription) regarding the meaning of the individual bits before changing the values.
KL2751/KS2751, KL2761/KS276146 Version: 3.1.0
Access from the user program
Input Data (answer of the bus terminal)
Byte 0: Status byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0xA0 (1010 0000
) 0xXX 0xXX
bin
Explanation:
• The terminal returns a value as a receipt in the status byte that differs only in bit 0.6 from the value of
the control byte.
• The input data word (byte 1 and byte 2) is of no importance after the write access. Any values still
displayed are invalid!
IV. Read Register 32 (check changed feature register)
Output Data
Byte 0: Control byte Byte 1: DataOUT1, high byte Byte 2: DataOUT1, low byte
0xA0 (1010 0000
) 0xXX 0xXX
bin
Explanation:
• Bit 0.7 set means: Register communication switched on.
• Bit 0.6 not set means: reading the register.
• Bits 0.5 to 0.0 indicate register number 32 with 10 0000
.
bin
• The output data word (byte 1 and byte 2) has no meaning during read access.
Input Data (answer of the bus terminal)
Byte 0: Status byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0xA0 (1010 0000
) 0x00 0x02
bin
Explanation:
• The terminal returns the value of the control byte as a receipt in the status byte.
• The terminal returns the current value of the feature register in the input data word (byte 1 and byte 2).
V. Write Register 31 (reset code word)
Output Data
Byte 0: Control byte Byte 1: DataOUT1, high byte Byte 2: DataOUT1, low byte
0xDF (1101 1111
) 0x00 0x00
bin
Explanation:
• Bit 0.7 set means: Register communication switched on.
• Bit 0.6 set means: writing to the register.
• Bits 0.5 to 0.0 specify the register number 31 with 01 1111
.
bin
• The output data word (byte 1 and byte 2) contains 0x0000 for reactivating write protection.
Input Data (answer of the bus terminal)
Byte 0: Status byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0x9F (1001 1111
) 0xXX 0xXX
bin
Explanation:
• The terminal returns a value as a receipt in the status byte that differs only in bit 0.6 from the value of
the control byte.
• The input data word (byte 1 and byte 2) is of no importance after the write access. Any values still
displayed are invalid!
KL2751/KS2751, KL2761/KS2761 47Version: 3.1.0
TwinCAT
7 TwinCAT
PLC and Motion Control on the PC
TwinCAT - The Windows Control and Automation Technology
The TwinCAT automation software converts any compatible PC into a real-time controller with multi-PLC, NC
axis control, programming environment and operating station. TwinCAT replaces conventional PLC and NC
controllers as well as operating devices:
• open, compatible PC hardware
• Embedding of IEC 61131-3 software PLC, software NC and software CNC in Windows NT/2000/XP,
NT/XP Embedded, CE
• Programming and runtime systems optionally together on one PC or separated
• Connection to all common fieldbus systems
• PC interfaces are supported
• Data communication with user interfaces and other programs by means of open Microsoft standards
(OPC, OCX, DLL, etc.)
TwinCAT architecture
TwinCAT consists of runtime systems for real-time execution of control programs and development
environments for programming, diagnosis and configuration. Any Windows programs, for instance
visualization programs or Office programs, can access TwinCAT data via Microsoft interfaces, or can
execute commands.
A practically oriented software solution
TwinCAT offers a precise time-base in which programs are executed with the highest deterministic features,
independently of other processor tasks. The real-time load on a PC is set with TwinCAT: This achieves a
defined operating behavior. TwinCAT displays the system load for running programs. A loading threshold
can be set, in order to assure a defined computing capacity for the operating programs and for Windows
NT/2000/XP. If this threshold is exceeded, a system message is generated.
TwinCAT supports system diagnosis
The general use of hardware and software from the open PC world requires some checking: Unsuitable
components can upset the PC system. Beckhoff integrates a handy display of the real-time jitter in order to
provide administrators with a simple means of evaluating hardware and software. A system message during
operation can draw attention to error states.
KL2751/KS2751, KL2761/KS276148 Version: 3.1.0
TwinCAT
Start/stop behavior
Depending on the setting, TwinCAT is started and stopped manually or automatically. Since TwinCAT is
integrated into Windows NT/2000/XP as a service, an operator is not needed to start the system: switching
on is enough.
Restarting and data backup
When a program is started or restarted, TwinCAT loads programs and remanent data. To backup data, and
to shut down Windows NT/2000/XP correctly, a UPS (uninterruptible power supply) is of great value.
TwinCAT and "Blue Screen"
The TwinCAT system can be configured such that real-time capability is maintained in the event of a BSOD
(Blue-Screen-of-Death) operating system crash. Real-time tasks such as PLC and NC can thus continue to
run and place the controlled process in a safe state. Ultimately, it is the decision of the programmer whether
or not to utilize this feature, bearing in mind that data or programs may already have been destroyed by the
BSOD.
World-wide connection through message routing - "remote" connection is inherent to the system
According to the requirement for operating resources, the TwinCAT software devices can be distributed:
TwinCAT PLC programs can be executed on PCs and on Beckhoff Bus Terminal controllers. A "message
router" manages and distributes all the messages, both in the system and via TCP/IP connections. PC
systems can be connected to one another by TCP/IP; Bus Terminal controllers are connected via serial
interfaces and fieldbus systems (EtherCAT, Lightbus, PROFIBUS DP, PROFINET, Interbus, CANopen,
DeviceNet, RS232, RS485, Ethernet TCP/IP, Ethernet/IP).
World-wide access
Since standard TCP/IP services from Windows NT/2000/XP are used, this data exchange can take place
worldwide. The system offers scalable communication capacity and timeout periods for the monitoring of
communications. OPC provides a standardized means for accessing many different SCADA packets. The
SOAP (Simple Object Access Protocol) enables a connection between two computers to be established by
means of an internet connection via standard HTTP. A TwinCAT component is available for this purpose.
Beckhoff Information System
Further information on the TwinCAT automation software can be found in the Beckhoff Information System.
The setup for installing the Beckhoff Information System is available to you on the Beckhoff
Products&Solutions DVD and on our website for download.
In addition, the online version of the Beckhoff Information System can be found at https://
infosys.beckhoff.com.
KL2751/KS2751, KL2761/KS2761 49Version: 3.1.0
TwinCAT
7.1 Programming
TwinCAT libraries
See software documentation in the Beckhoff Information System.
TwinCAT 2: TwinCAT PLC Lib: I/O functions
TwinCAT 3: TwinCAT 3 PLC Lib: Tc2_IoFunctions
7.2 FB_KL27x1Config function block
The KL2751 and KL2761 terminals can be configured using the FB-KL27x1Config function block. A detailed
description can be found in the Beckhoff Information System:
TwinCAT2: TwinCAT PLC Lib: IO functions/Bus Terminal configuration
TwinCAT3: TwinCAT 3 PLC Lib:Tc2_IoFunctions/Function blocks/Bus Terminal configuration
7.3 FB_Dimmer1SwitchEco function block
Fig.27: FB_Dimmer1SwitchEco
Description
The FB_Dimmer1SwitchEco block is a variant of FB_Dimmer1Switch that saves memory space. It lacks the
special functions Set brightness value and Disable memory function, which may not be required for many
applications. Moreover, the values nOutMin and nOutMax of the FB_Dimmer1Switch are set internally here
to 0 and 32767 respectively. This output span corresponds to the display range of an analog output terminal.
The tPLCCycle input is important. This time is used to calculate internally the amount by which the nOut
output must be increased per cycle - that saves additional time calculations.
Operating by means of the bSwitchDimm input
The light is switched on or off by a short signal at the bSwitchDimm input. Dimmer mode will be activated if
the signal remains for longer than tSwitchOverTime (typical recommended value: 200ms). The output signal
moves cyclically between 0 and 32767. In order to be able to better adjust the maximum or minimum value,
the output signal dwells at the minimum or maximum value for the time tCycleDelay. When the signal is once
more removed, the output signal being generated at that time is retained. Another pulse at the input will set
the output to 0.
Operation by means of the bOn and bOff inputs
The light is immediately switched on or off if a rising edge is applied to the bOn or bOff inputs. For example,
for global on/off functions. The output value is set to 0 when switching off.
KL2751/KS2751, KL2761/KS276150 Version: 3.1.0
TwinCAT
Memory function
Unlike FB_Dimmer1Switch, in which the memory function can be activated or deactivated via the
bMemoryModeOn input, the memory function is always active in this version for saving memory space. This
means that the last-set value is adopted as the brightness value when switching on. It is irrelevant, in this
case, whether the light has been switched on by means of the bOn input or the bSwitchDimm input.
Comment on the tSwitchOverTime parameter
If a duration of 0 is specified for the parameter tSwitchOverTime, the bSwitchDimm input can only be used to
dim the light. Switching on and off is only possible with the bOn and bOff inputs.
VAR_INPUT
bSwitchDimm:BOOL;
bOn:BOOL;
bOff:BOOL;
tSwitchOverTime:TIME;
tDimmTime:TIME;
tCycleDelay:TIME;
tPLCCycle:TIME;
bSwitchDimm: Switches or dims the output.
bOn: Switches the output to the last output value, or to the value specified by
nOnValueWithoutMemoryMode.
bOff: Switches the output to 0.
tSwitchOverTime: Time for switching between the light on/off and dimming functions for the bSwitchDimm
input.
tDimmTime Time required for dimming to go from its minimum value to its maximum value.
tCycleDelay: Delay time, if either the minimum or maximum value is reached.
tPLCCycle: the set PLC cycle time.
VAR_OUTPUT
nOut:UINT;
bLight:BOOL;
nOut: analog output value.
bLight: digital output value. This is set if nOut is greater than 0.
Download
Click on the following symbol to download the file with the FB_Dimmer1SwitchEco function block from this
documentation.
http://infosys.beckhoff.com/content/1033/kl2751_kl2761/Resources/zip/3472922123.zip
FB_Dimmer1SwitchEco.exp.zip
Save the FB_Dimmer1SwitchEco.exp file contained in this zip file on your PC.
Importing a function block
The import of a function block into your TwinCAT system is described in the chapter Im-
Note
porting a function block [}51].
7.4 Importing a function block
To import a function block into your TwinCAT, click on the menu item Project/Import in the TwinCAT PLC
Control.
KL2751/KS2751, KL2761/KS2761 51Version: 3.1.0
TwinCAT
Fig.28: Importing a function block into TwinCAT PLC
Select the folder in which you have saved the exp file (DB_Dimmer1SwitchEco.exp in the example), select
the file and click on the Open button.
Fig.29: Import Project dialog
Following successful import the PC Control reports Import complete.
KL2751/KS2751, KL2761/KS276152 Version: 3.1.0
Appendix
8 Appendix
8.1 Support and Service
Beckhoff and their partners around the world offer comprehensive support and service, making available fast
and competent assistance with all questions related to Beckhoff products and system solutions.
Beckhoff's branch offices and representatives
Please contact your Beckhoff branch office or representative for local support and service on Beckhoff
products!
The addresses of Beckhoff's branch offices and representatives round the world can be found on her internet
pages:
http://www.beckhoff.com
You will also find further documentation for Beckhoff components there.
Beckhoff Headquarters
Beckhoff Automation GmbH & Co. KG
Huelshorstweg 20
33415 Verl
Germany
Phone: +49(0)5246/963-0
Fax: +49(0)5246/963-198
e-mail: info@beckhoff.com
Beckhoff Support
Support offers you comprehensive technical assistance, helping you not only with the application of
individual Beckhoff products, but also with other, wide-ranging services:
• support
• design, programming and commissioning of complex automation systems
• and extensive training program for Beckhoff system components
Hotline: +49(0)5246/963-157
Fax: +49(0)5246/963-9157
e-mail: support@beckhoff.com
Beckhoff Service
The Beckhoff Service Center supports you in all matters of after-sales service:
• on-site service
• repair service
• spare parts service
• hotline service
Hotline: +49(0)5246/963-460
Fax: +49(0)5246/963-479
e-mail: service@beckhoff.com
KL2751/KS2751, KL2761/KS2761 53Version: 3.1.0
List of illustrations
List of illustrations
Fig. 1 KL2751 ........................................................................................................................................ 9
Fig. 2 KL2761 ........................................................................................................................................ 10
Fig. 3 KL2751, KL2761.......................................................................................................................... 11
Fig. 4 KL2751, KL2761 - LEDs.............................................................................................................. 13
Fig. 5 Attaching on mounting rail ........................................................................................................... 14
Fig. 6 Disassembling of terminal............................................................................................................ 15
Fig. 7 Power contact on left side............................................................................................................ 16
Fig. 8 Recommended distances for standard installation position ........................................................ 17
Fig. 9 Other installation positions .......................................................................................................... 18
Fig. 10 Standard wiring ............................................................................................................................ 18
Fig. 11 Pluggable wiring .......................................................................................................................... 19
Fig. 12 High Density Terminals................................................................................................................ 19
Fig. 13 Mounting a cable on a terminal connection ................................................................................. 20
Fig. 14 Connection taking KL2751 as an example .................................................................................. 21
Fig. 15 KL2751-0000 connection example .............................................................................................. 26
Fig. 16 KL2751-0011 - Application example ............................................................................................ 27
Fig. 17 KS2000 configuration software .................................................................................................... 28
Fig. 18 Display of the fieldbus station in KS2000 .................................................................................... 30
Fig. 19 KS2000 tree branches for channel 1 of the KL2535 .................................................................... 31
Fig. 20 Register view in KS2000.............................................................................................................. 32
Fig. 21 Settings via KS2000 .................................................................................................................... 33
Fig. 22 Process Data field........................................................................................................................ 35
Fig. 23 History field .................................................................................................................................. 35
Fig. 24 Value field - display of the input value ......................................................................................... 35
Fig. 25 Value field - modification of the output values ............................................................................. 35
Fig. 26 Setting the display ....................................................................................................................... 36
Fig. 27 FB_Dimmer1SwitchEco ............................................................................................................... 50
Fig. 28 Importing a function block into TwinCAT PLC ............................................................................. 52
Fig. 29 Import Project dialog .................................................................................................................... 52
KL2751/KS2751, KL2761/KS276154 Version: 3.1.0
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