Beckhoff KL4494 Bedienungsanleitung
Documentation
KL4494
Analog terminal with two input and two output channels,
(-10V...+10V)
2.0.0
2017-09-08
Version:
Date:
Foreword
KL4494 3Version: 2.0.0
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®, 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.
Foreword
KL44944 Version: 2.0.0
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 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
Serious risk of injury!
Failure to follow the safety instructions associated with this symbol directly endangers the
life and health of persons.
WARNING
Risk of injury!
Failure to follow the safety instructions associated with this symbol endangers the life and
health of persons.
CAUTION
Personal injuries!
Failure to follow the safety instructions associated with this symbol can lead to injuries to
persons.
Attention
Damage to the environment or devices
Failure to follow the instructions associated with this symbol can lead to damage to the en-
vironment or equipment.
Note
Tip or pointer
This symbol indicates information that contributes to better understanding.
Foreword
KL4494 5Version: 2.0.0
1.3 Documentation issue versions
Version Comment
2.0.0 • Migration
• Structure update
• Update chapter Technical data
• Revision status updated
• Chapter Notes on ESD protection added
• Chapter Installation instructions for enhanced mechanical load capacity
added
• Chapters ATEX – special conditions (standard temperature range) and
ATEX documentation added
• Update chapter Connection technology -> Connection
1.1.0 • Description of the KS2000 configuration software expanded
• Description of the basic function principles added
• Technical data updated
• Register overview and register description updated
• Firmware and hardware versions updated
1.0 • Description of connection updated
• Technical data updated
• English version available
0.1 • Preliminary version (only German language available)
Firmware and hardware versions
Documentation
Version
Firmware Hardware
2.0.0 1C 04
1.1.0 1B 02
1.0 1B 01
0.1 1A 00
The firmware and hardware versions (delivery state) can be found in the serial number printed on the side of
the terminal.
Syntax of the serial number
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.: 31 05 1B 01:
31 - week of production 31
05 - year of production 2005
1B - firmware version 1B
01 - hardware version 01
Product overview
KL44946 Version: 2.0.0
2 Product overview
2.1 Introduction
Fig.1: KL4494
Analog terminal with two input and two output channels, -10 V to 10 V
The KL4494 Bus Terminal combines two analog inputs and two analog outputs in one housing and can
process signals in the range -10 V to +10 V. The voltage is digitized to a resolution of 12bits, and is
transmitted, electrically isolated, to the higher-level automation device or to the process level. The input and
output channels of the Bus Terminal have a common ground potential that is electrically isolated from the
0V power contact. The RUN LEDs give an indication of the data exchange with the Bus Coupler.
Product overview
KL4494 7Version: 2.0.0
2.2 Technical data
Technical data KL4494
Number of outputs 2
Number of inputs 2 (single-ended)
Signal voltage -10V to +10V
Load of each output >5kΩ
Internal resistance of each input >130kΩ
Resolution 12bit
Measuring error (total measuring range) ±0.3% of the full scale value
Conversion time <2ms
Bit width in the input process image 2 data words, 2 status byte
Bit width in the output process image 2 data words, 2 control byte
Power supply for the electronics via the K-bus
Current consumption from K-bus typically 70mA
Electrical isolation 500V (signal voltage/K-bus)
Connection spring-loaded system
Weight approx. 55g
Dimensions (W x H x D) approx. 15mm x 100mm x 70mm (width aligned:
12mm)
Mounting [}11] on 35mm mounting rail conforms to EN60715
Permissible ambient temperature range during
operation
0°C ... + 55°C
Permissible ambient temperature range during
storage
-25°C ... + 85°C
Permissible relative air humidity 95%, no condensation
Vibration/shock resistance conforms to EN60068-2-6/EN60068-2-27, see also
Installation instructions for enhanced mechanical load
capacity [}15]
EMC immunity/emission conforms to EN61000-6-2 / EN61000-6-4
Protection class IP20
Installation position variable
Approval CE, UL, ATEX [}20]
Product overview
KL44948 Version: 2.0.0
2.3 Diagnostic LEDs
The four green RUN LEDs indicated the operating state of the terminal channels.
Fig.2: KL4494 - LEDs
Meaning of the LED displays
LED Color Channel State
On off
RunIN1 green Input1 normal operation A watchdog-timer overflow has
occurred. The green LEDs go
out if no process data are
transferred between the
controller and the Bus Coupler
for more than 100ms.
RunIN2 Input2
RunOUT1 Output1
RunOUT2 Output2
2.4 Basic function principles
Analog input channels
The analog input channels of the KL4494 process signals in the range from -10V to +10V with 12-bit
resolution (4095 steps). The inputs are single-ended inputs with a common ground potential.
Format of the input values
In the delivery state the process data are shown in two's complement form ( -1integer corresponds to 0xFFFF).
Siemens output format [}34] can be selected via the feature register R32 as an alternative.
Measured value Input data
decimal hexadecimal
-10V -32768 0x8000
-5V -16383 0xC001
0V 0 0x0000
+5V 16383 0x3FFF
+10V 32767 0x7FFF
Process data equations
The process data that are transferred to the Bus Coupler are calculated using the following equations:
Product overview
KL4494 9Version: 2.0.0
Neither user nor manufacturer scaling is active
Ya = (Ba + XADC) x Aa(1.0)
Yout = Ya
Manufacturer scaling active (default setting)
Y1 = Bh + Ah x Ya(1.1)
Yout = Y1
User scaling active
Y2 = Bw + Aw x Ya(1.2)
Yout = Y2
Manufacturer and user scaling active
Y1= Bh + Ah x Ya(1.3)
Y2 = Bw + Aw x Y1(1.4)
Yout = Y2
Key
Xadc: Output values of the A/D converter
Yout: Process data to PLC
Ba , Aa: Manufacturer gain and offset compensation (R17 [}33], R18 [}33])
Bh , Ah: Manufacturer scaling (Not implemented)
Bw, Aw: User scaling (R33 [}34], R34 [}35])
The equations of the straight line are activated via register R32.
Analog output channels
The analog output channels of the KL4494 generate signals in the range from -10V to +10V with a
resolution of 12 bits (4095 steps). The outputs are single-ended outputs with a common ground potential.
Format of the output values
In the delivery state the process data are shown in two's complement form ( -1integer corresponds to 0xFFFF).
Siemens output format [}34] can be selected via the feature register R32 as an alternative.
Output value Output voltage
hexadecimal decimal
0x8000 -32768 -10V
0xC001 -16383 -5V
0x0000 0 0V
0x3FFF 16383 +5V
0x7FFF 32767 +10V
Process data equations
The process data, which are transferred to the Bus Terminal, are calculated based on the following
equations:
Neither user nor manufacturer scaling is active
Ydac = XxAa+Ba(1.0)
Product overview
KL449410 Version: 2.0.0
Manufacturer scaling active (default setting)
Y1 = Bh + Ah x X (1.1)
Ydac = Y1xAa+Ba
User scaling active
Y2 = Bw + Aw x X (1.2)
Ydac = Y2xAa+Ba
Manufacturer and user scaling active
Y1= Bh + Ah x X (1.3)
Y2 = Bw + Aw x Y1(1.4)
Ydac = Y2xAa+Ba
Key
X: Controller process data
Ydac: Process data to D/A converter
Ba , Aa: Manufacturer gain and offset compensation (R19 [}33], R20 [}33])
Bh , Ah: Manufacturer scaling (Not implemented)
Bw, Aw: User scaling (R36 [}35], R37 [}35])
The equations of the straight line are activated via register R32.
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