Beckhoff KL27 2 Series Operator's manual

Documentation | EN
KL2701, KS2701 und KL27x2,
KS27x2
Solid state and triac terminals
2020-10-20 | Version: 1.0.0

Table of contents
KL2701, KS2701 und KL27x2, KS27x2 3Version: 1.0.0
Table of contents
1 Foreword ....................................................................................................................................................5
1.1 Notes on the documentation..............................................................................................................5
1.2 Safety instructions .............................................................................................................................6
1.3 Documentation issue status ..............................................................................................................7
2 Product overview.......................................................................................................................................8
2.1 KL2701 and KL2702 - Solid state terminals ......................................................................................8
2.1.1 KL2701 - Introduction ........................................................................................................ 8
2.1.2 KL2701 - Technical data.................................................................................................... 9
2.1.3 KL2701 - connection and LED displays........................................................................... 10
2.1.4 KL2702 - Introduction ...................................................................................................... 11
2.1.5 KL2702 - Technical data.................................................................................................. 12
2.1.6 KL2702 - connection and LED displays........................................................................... 13
2.2 KL2712, KL2722 and KL2732 - triac terminals................................................................................14
2.2.1 KL2712 - Introduction ...................................................................................................... 14
2.2.2 KL2722 - Introduction ...................................................................................................... 15
2.2.3 KL2732 - Introduction ...................................................................................................... 16
2.2.4 Technical data ................................................................................................................. 17
2.2.5 KL2712, KL2722 - connection and LED displays ............................................................ 18
2.2.6 KL2732 - connection and LED displays........................................................................... 19
3 Mounting and wiring................................................................................................................................20
3.1 Installation on mounting rails ...........................................................................................................20
3.2 Connection system ..........................................................................................................................22
3.3 ATEX - Special conditions (standard temperature range) ...............................................................25
3.4 Continuative documentation about explosion protection .................................................................26
4 TwinCAT ...................................................................................................................................................27
4.1 Programming ...................................................................................................................................29
5 Appendix ..................................................................................................................................................30
5.1 Support and Service ........................................................................................................................30

Table of contents
KL2701, KS2701 und KL27x2, KS27x24 Version: 1.0.0

Foreword
KL2701, KS2701 und KL27x2, KS27x2 5Version: 1.0.0
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®, 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
KL2701, KS2701 und KL27x2, KS27x26 Version: 1.0.0
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
KL2701, KS2701 und KL27x2, KS27x2 7Version: 1.0.0
1.3 Documentation issue status
Version Comment
1.0.0 • Migration
• Structure update
• Technical data updated
• Installation instructions for enhanced mechanical load capacity added
• Revision status updated
Firmware and hardware versions
Documentation
Version
KL2701-0000, KS2701-0000 KL2702-0000, KS2702-0000 KL2702-0002 KL2702-0020
Firmware Hardware Firmware Hardware Firmware Hardware Firmware Hardware
1.0.0 - 04 - 03 - 03 - 02
Documentation
Version
KL2712-0000, KS2712-0000 KL2722-0000, KS2722-0000 KL2732-0000, KS2732-0000
Firmware Hardware Firmware Hardware Firmware Hardware
1.0.0 - 03 - 06 - 02
The K-bus firmware and hardware version (delivery state) are indicated by the serial number printed at the
side of the terminal.
Syntax of the serial number
Structure of the serial number: WWYYFFHH
WW - week of production (calendar week)
YY - year of production
FF - K-bus firmware version
HH - hardware version
Example with ser. no.: 49 05 1B 03
49 - week of production 49
05 - year of production 2005
1B - firmware version 1B
03 - hardware version 03

Product overview
KL2701, KS2701 und KL27x2, KS27x28 Version: 1.0.0
2 Product overview
Terminal Channels Current Comment
KL2701-0000 [}8] 1 3A
KL2702-0000 [}11] 2 0.3A
KL2702-0002 [}11] 2 2A mutual locking of the channels
KL2702-0020 [}11] 2 1.5A
KL2712-0000 [}14] 2 0.5A
KL2722-0000 [}15] 2 1A mutual locking of the channels
KL2732-0000 [}16] 2 1A mutual locking of the channels, without power contacts
2.1 KL2701 and KL2702 - Solid state terminals
2.1.1 KL2701 - Introduction
Fig.1: KL2701 - 1-channel solid state load relay up to 230VAC/DC, 3A
The KL2701 output terminal uses an electronic load relay to switch a mains voltage up to 230VAC/DC with an
output current up to 3A. The switching element is a high-power MOSFET, which is connected to the power
contact potential. As a semiconductor switch, it is not subject to wear. The KL2701 terminal has an
independent output with signal state indication by means of an LED.

Product overview
KL2701, KS2701 und KL27x2, KS27x2 9Version: 1.0.0
2.1.2 KL2701 - Technical data
Technical data KL2701-0000, KS2701-0000
Connection technology 2-wire / 3-wire / 4-wire
Number of outputs 1 make contact
Nominal voltage 0 … 230VAC/DC
Load type resistive, inductive
Output current per channel 3A continuous load
Overvoltage protection from 400VAC
Pulse current 5A (20s),
50A (100ms)
Switching current Peak current: 5A (20s), 50A (100ms)
Recommended fuse ≤10A fast
Volume resistance typ. 0.1Ω
SwitchOffTime 2…4ms
Max. residual voltage (100mΩ)
Electrical isolation 500V (K-bus / field voltage), 2500VAC, (1min.)
Leakage current (OFF state) << 1mA
Current consumption power
contacts
only leakage and load current
K-Bus current consumption typ. 65mA
Bit width in process image 2 outputs
Configuration no address or configuration settings required
Weight approx.55g
Permissible ambient temperature
during operation
0°C ... +55°C
Permissible ambient temperature
during storage
-25°C ... +85°C
Permissible relative humidity 95%, no condensation
Vibration / shock resistance conforms to EN60068-2-6 / EN60068-2-27
EMC immunity/emission conforms to EN 61000-6-2 / EN 61000-6-4
Installation position variable
Protection class IP20
Pluggable wiring for KSxxxx terminals
Approvals/markings CE

Product overview
KL2701, KS2701 und KL27x2, KS27x210 Version: 1.0.0
2.1.3 KL2701 - connection and LED displays
Fig.2: KL2701 LEDs and connection
Connection
Terminal point Description
Name No.
Output 1 1 Output 1
+230V 2 +230V (internally connected to terminal point 6 and positive power contact)
N 3 Ground (internally connected to terminal point 7 and negative power contact)
PE 4 PE (internally connected to terminal point8)
Output 2 5 Output 2
+230V 6 +230V (internally connected to terminal point 2 and positive power contact)
N 7 Ground (internally connected to terminal point 3 and negative power contact)
PE 8 PE (internally connected to terminal point4)
LED Displays
LEDs Color Meaning
Signal LED 1 green off Signal voltage "0"
on Signal voltage "1"

Product overview
KL2701, KS2701 und KL27x2, KS27x2 11Version: 1.0.0
2.1.4 KL2702 - Introduction
Fig.3: KL2702 - 2-channel solid state load relay up to 230VAC/DC
The KL2702 output terminals use an electronic load relay to switch a mains voltage of up to 230VAC/DC. The
switching element is a high-power MOSFET, which is connected to the power contact potential. As a
semiconductor switch, it is not subject to wear. The KL2702-0000 and KL2702-0020 terminals have two
independent outputs. The outputs of the KL2702-0002 are mutually locked. The terminals of the series
indicate the signal state of their outputs by means of LEDs.

Product overview
KL2701, KS2701 und KL27x2, KS27x212 Version: 1.0.0
2.1.5 KL2702 - Technical data
Technical data KL2702-0000
KS2702-0000
KL2702-0020 KL2702-0002
Connection technology 2-wire / 3-wire / 4-wire
Number of outputs 2 make contacts 2 make contacts,
mutual locking
Nominal voltage 0 … 230VAC/DC(DC … 100Hz)
Load type resistive, inductive
Output current per channel max. 0.3A max. 1.5A max. 2A
Frequency range DC…100Hz
Overvoltage protection from 400VAC
Pulse current 0.5A (20s),
1.5A (100ms)
2.5A (20s)
7.5A (100ms)
2.5A (20s)
7.5A (100ms)
Volume resistance 2.1Ω typ., 3.2Ω max. 0.3Ω typ., 0.4Ω max. 0.3Ω typ., 0.4Ω max.
Switch-on time 4…6ms 0.2…0.4ms 0.2…0.4ms
SwitchOffTime 0.05…0.1ms 5…8ms 5…8ms
Switch-on delay 320µs
Switch-off delay 6.2ms
Max. residual voltage (2.1Ω) (200mΩ) (300mΩ)
Electrical isolation 500V (K-bus / field voltage), 2500
Leakage current (OFF state) << 1mA
Current consumption power
contacts
only leakage and load current
K-Bus current consumption typ. 10mA typ. 50mA typ. 50mA
Bit width in process image 2 outputs
Configuration no address or configuration settings required
Weight approx.55g
Dimensions (W x H x D) 15mmx100mmx70mm (width aligned 12mm)
Permissible ambient temperature
during operation
0°C ... +55°C
Permissible ambient temperature
during storage
-25°C ... +85°C
Permissible relative humidity 95%, no condensation
Vibration / shock resistance conforms to EN60068-2-6 / EN60068-2-27
EMC immunity/emission conforms to EN61000-6-2 / EN61000-6-4
Installation position variable
Protection class IP20
Pluggable wiring for KSxxxx terminals - -
Approvals/markings CE, cULus, ATEX, GL CE CE

Product overview
KL2701, KS2701 und KL27x2, KS27x2 13Version: 1.0.0
2.1.6 KL2702 - connection and LED displays
Fig.4: KL2702 - connection and LED displays
Connection
Terminal point Description
Name No.
Output 1 1 Output 1
+230V 2 +230V (internally connected to terminal point 6 and positive power contact)
0V 3 Ground (internally connected to terminal point 7 and negative power contact)
PE 4 PE (internally connected to terminal point8)
Output 2 5 Output 2
+230V 6 +230V (internally connected to terminal point 2 and positive power contact)
0V 7 Ground (internally connected to terminal point 3 and negative power contact)
PE 8 PE (internally connected to terminal point4)
LED Displays
LEDs Color Meaning
Signal LEDs 1-2 green off Signal voltage "0"
on Signal voltage "1"

Product overview
KL2701, KS2701 und KL27x2, KS27x214 Version: 1.0.0
2.2 KL2712, KL2722 and KL2732 - triac terminals
2.2.1 KL2712 - Introduction
Fig.5: KL2712 - 2-channel triac output terminal, 12 ... 230VAC
The KL2712 output terminal uses a power switch to control mains voltage from 12to 230VAC. The switching
element is a triac, which is connected to the power contact potential. As a semiconductor switch, it is not
subject to wear. The constant load capacity of a digital output is 0.5A. The KL2712 has two independent
outputs. LEDs are used to indicate their signal state.
Application
The triac output terminals are particularly suitable for mechanical reverse motors. They are only
suitable to a limited extent for connecting LEDs. The correct functioning of the terminals is not guar-
anteed in this case.

Product overview
KL2701, KS2701 und KL27x2, KS27x2 15Version: 1.0.0
2.2.2 KL2722 - Introduction
Fig.6: KL2722 - 2-channel triac output terminal, 12 ... 230VAC, channel locking
The KL2722 output terminal uses a power switch to control mains voltage from 12to 230VAC. The switching
element is a triac, which is connected to the power contact potential. As a semiconductor switch, it is not
subject to wear. The constant load capacity of a digital output is 1A. The KL2722 has two mutually locked
outputs.
Application
The triac output terminals are particularly suitable for mechanical reverse motors. They are only
suitable to a limited extent for connecting LEDs. The correct functioning of the terminals is not guar-
anteed in this case.

Product overview
KL2701, KS2701 und KL27x2, KS27x216 Version: 1.0.0
2.2.3 KL2732 - Introduction
Fig.7: KL2732 - 2-channel triac output terminal, 12 ... 230VAC, channel locking, without power contacts
The KL2732 output terminal uses a power switch to control mains voltage from 12to 230VAC. The switching
element is a triac. As a semiconductor switch, it is not subject to wear. The KL2732 has two mutually locked
outputs and operates with two potential-free switches.
Application
The triac output terminals are particularly suitable for mechanical reverse motors. They are only
suitable to a limited extent for connecting LEDs. The correct functioning of the terminals is not guar-
anteed in this case.

Product overview
KL2701, KS2701 und KL27x2, KS27x2 17Version: 1.0.0
2.2.4 Technical data
Technical data KL2712-0000
KS2712-0000
KL2722-0000
KS2722-0000
KL2732-0000
KS2732-0000
Connection technology 2-/3-/4-wire
Number of outputs 2 x make contact 2 make contacts,
mutual locking
2 make contacts,
mutual locking (without
power contacts)
Nominal voltage 12 … 230VAC
Load type resistive, inductive
Output current per channel 2 x 0.025 … 0.5A 1A (leakage current:
typ. 0.8mA, max.
1.5mA)
1A (leakage current:
typ. 0.8mA, max.
1.5mA)
Frequency range 47 … 63Hz
Overvoltage protection > 275V
Pulse current 40A (16ms),
1.5A (30s)
40A (16ms)
3A (30s)
40A (16ms)
3A (30s)
Switch-on time 0.1ms 0.1 ... 10ms, zero
crossing
0.1 ... 10ms, zero
crossing
SwitchOffTime T/2
Max. residual voltage 1.5V 1.5V (60mA…1A,
150Ω (< 60mA)
1.5V (60mA...1A),
150Ω (< 60mA)
Electrical isolation 500V (K-bus / field voltage), 3750VAC, (1min.)
Leakage current (OFF state) typ. 0.8mA, max. 1.5mA
Current consumption power
contacts
only leakage and load current -
K-Bus current consumption 10mA
Bit width in process image 2 outputs
Configuration no address or configuration settings required
Weight approx. 55g
Permissible ambient temperature
during operation
0°C ... +55°C
Permissible ambient temperature
during storage
-25°C ... +85°C
Permissible relative humidity 95%, no condensation
Vibration / shock resistance conforms to EN60068-2-6 / EN60068-2-27
EMC immunity/emission conforms to EN 61000-6-2 / EN 61000-6-4
Installation position variable
Protection class IP20
Pluggable wiring for all KSxxxx terminals
Approvals/markings CE, cULus, ATEX, GL CE, ATEX, GL CE, GL

Product overview
KL2701, KS2701 und KL27x2, KS27x218 Version: 1.0.0
2.2.5 KL2712, KL2722 - connection and LED displays
Fig.8: KL2712 and KL2722 - connection and LED displays
Connection
Terminal point Description
Name No.
Output 1 1 Output 1
+230V 2 +230V (internally connected to terminal point 6 and positive power contact)
N 3 Ground (internally connected to terminal point 7 and negative power contact)
PE 4 PE (internally connected to terminal point8)
Output 2 5 Output 2
230V 6 +230V (internally connected to terminal point 2 and positive power contact)
N 7 Ground (internally connected to terminal point 3 and negative power contact)
PE 8 PE (internally connected to terminal point4)
LED Displays
LEDs Color Meaning
Signal LEDs 1-2 green off Signal voltage "0"
on Signal voltage "1"

Product overview
KL2701, KS2701 und KL27x2, KS27x2 19Version: 1.0.0
2.2.6 KL2732 - connection and LED displays
Fig.9: KL2732 - connection and LED displays
Connection
Terminal point Description
Name No.
Output 1 1 Output 1
12...230VAC 2 12…230VAC
Output 2 5 Output 2
12…230VAC 6 12…230VAC
LED Displays
LEDs Color Meaning
Signal LEDs 1-2 green off Signal voltage "0"
on Signal voltage "1"

Mounting and wiring
KL2701, KS2701 und KL27x2, KS27x220 Version: 1.0.0
3 Mounting and wiring
3.1 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.10: 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).