Kontron CU 5 -2 Series User manual


USER GUIDE
www.kontron.com
Control Units CU 5x-2xxx
Doc. Rev. 1.A
Doc. ID: 90216 (EN)

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
CONTROL UNITS CU 5X-2XXX - USER GUIDE
Disclaimer
Kontron would like to point out that the information contained in this user guide may be subject to alteration,
particularly as a result of the constant upgrading of Kontron products. This document does not entail any guarantee
on the part of Kontron with respect to technical processes described in the user guide or any product characteristics
set out in the user guide. Kontron assumes no responsibility or liability for the use of the described product(s),
conveys no license or title under any patent, copyright or mask work rights to these products and makes no
representations or warranties that these products are free from patent, copyright or mask work right infringement
unless otherwise specified. Applications that are described in this user guide are for illustration purposes only.
Kontron makes no representation or warranty that such application will be suitable for the specified use without
further testing or modification. Kontron expressly informs the user that this user guide only contains a general
description of processes and instructions which may not be applicable in every individual case. In cases of doubt,
please contact Kontron.
This user guide is protected by copyright. All rights are reserved by Kontron. No part of this document may be
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer
language, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), without the
express written permission of Kontron. Kontron points out that the information contained in this user guide is
constantly being updated in line with the technical alterations and improvements made by Kontron to the products
and thus this user guide only reflects the technical status of the products by Kontron at the time of publishing.
Brand and product names are trademarks or registered trademarks of their respective owners.
©2020 Kontron S&T AG
Kontron S&T AG
Lise-Meitner-Str. 3-5
86156 Augsburg
Germany
www.kontron.com

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Intended Use
THIS DEVICE AND ASSOCIATED SOFTWARE ARE NOT DESIGNED, MANUFACTURED OR INTENDED FOR USE
OR RESALE FOR THE OPERATION OF NUCLEAR FACILITIES, THE NAVIGATION, CONTROL OR
COMMUNICATION SYSTEMS FOR AIRCRAFT OR OTHER TRANSPORTATION, AIR TRAFFIC CONTROL, LIFE
SUPPORT OR LIFE SUSTAINING APPLICATIONS, WEAPONS SYSTEMS, OR ANY OTHER APPLICATION IN A
HAZARDOUS ENVIRONMENT, OR REQUIRING FAIL-SAFE PERFORMANCE, OR IN WHICH THE FAILURE OF
PRODUCTS COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE PHYSICAL OR
ENVIRONMENTAL DAMAGE (COLLECTIVELY, "HIGH RISK APPLICATIONS").
You understand and agree that your use of Kontron devices as a component in High Risk Applications is
entirely at your risk. To minimize the risks associated with your products and applications, you should
provide adequate design and operating safeguards. You are solely responsible for compliance with all
legal, regulatory, safety, and security related requirements concerning your products. You are responsible
to ensure that your systems (and any Kontron hardware or software components incorporated in your
systems) meet all applicable requirements. Unless otherwise stated in the product documentation, the
Kontron device is not provided with error-tolerance capabilities and cannot therefore be deemed as being
engineered, manufactured or setup to be compliant for implementation or for resale as device in High Risk
Applications. All application and safety related information in this document (including application
descriptions, suggested safety measures, suggested Kontron products, and other materials) is provided
for reference only.

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Revision History
Revision
Brief Description of Changes
Date of Issue
Author/
Editor
0.A
Initial Issue
16.07.2020
GUGMA
0.B
Appendix B added and additional safety warning
25.09.2020
KEPRA
0.C
Added temperature requirement for power cable
14.10.2020
KEPRA
1.A
Female connector X1 with UL/CSA conformity
24.02.2021
KEPRA
Terms and Conditions
Kontron warrants products in accordance with defined regional warranty periods. For more information about
warranty compliance and conformity, and the warranty period in your region, visit http://www.kontron.com/terms-
and-conditions.
Kontron sells products worldwide and declares regional General Terms & Conditions of Sale, and Purchase Order
Terms & Conditions. Visit http://www.kontron.com/terms-and-conditions.
For contact information, refer to the corporate offices contact information on the last page of this user guide or visit
our website CONTACT US.
Customer Support
Find Kontron contacts by visiting: http://www.kontron.com/support.
Customer Service
As a trusted technology innovator and global solutions provider, Kontron extends its embedded market strengths into
a services portfolio allowing companies to break the barriers of traditional product lifecycles. Proven product
expertise coupled with collaborative and highly-experienced support enables Kontron to provide exceptional peace of
mind to build and maintain successful products.
For more details on Kontron’s service offerings such as: enhanced repair services, extended warranty, Kontron
training academy, and more visit http://www.kontron.com/support-and-services/services.
Customer Comments
If you have any difficulties using this user guide, discover an error, or just want to provide some feedback, contact
Kontron support. Detail any errors you find. We will correct the errors or problems as soon as possible and post the
revised user guide on our website.

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Symbols
The following symbols may be used in this user guide
DANGER indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
NOTICE indicates a property damage message.
CAUTION indicates a hazardous situation which, if not avoided,
may result in minor or moderate injury.
Electric Shock!
This symbol and title warn of hazards due to electrical shocks (>60V) when touching
products or parts of products. Failure to observe the precautions indicated and/or
prescribed by the law may endanger your life/health and/or result in damage to your
material.
ESD Sensitive Device!
This symbol and title inform that the electronic boards and their components are sensitive
to static electricity. Care must therefore be taken during all handling operations and
inspections of this product in order to ensure product integrity at all times.
HOT Surface!
Do NOT touch! Allow to cool before servicing.
Laser!
This symbol inform of the risk of exposure to laser beam and light emitting devices (LEDs)
from an electrical device. Eye protection per manufacturer notice shall review before
servicing.
This symbol indicates general information about the product and the user guide.
This symbol also indicates detail information about the specific product configuration.
This symbol precedes helpful hints and tips for daily use.

Control Units CU 5x-2xxx –Rev. 1.A
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For Your Safety
Your new Kontron product was developed and tested carefully to provide all features necessary to ensure its
compliance with electrical safety requirements. It was also designed for a long fault-free life. However, the life
expectancy of your product can be drastically reduced by improper treatment during unpacking and installation.
Therefore, in the interest of your own safety and of the correct operation of your new Kontron product, you are
requested to conform to the following guidelines.
All operations on this product must be carried out by sufficiently skilled personnel only.
If the equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
Safety instructions for mains-operated devices
As a precaution and in case of danger, the power connector must be easily accessible. The power connector is the
product’s main disconnect device.
Electric Shock!
Before installing a non-hot-swappable Kontron product into a system always ensure that
your mains power is switched off. Serious electrical shock hazards can exist during all
installation, repair, and maintenance operations on this product. Therefore, always unplug
the power cable and any other cables which provide external voltages before performing
any work on this product.
Earth ground connection to a central grounding point shall remain connected. The earth
ground cable shall be the last cable to be disconnected or the first cable to be connected
when performing installation or removal procedures on this product.
Special Handling and Unpacking Instruction
ESD Sensitive Device!
Electronic boards and their components are sensitive to static electricity. Therefore, care
must be taken during all handling operations and inspections of this product, in order to
ensure product integrity at all times.
Do not handle this product out of its protective enclosure while it is not used for operational purposes unless it is
otherwise protected.
Whenever possible, unpack or pack this product only at EOS/ESD safe work stations. Where a safe work station is not
guaranteed, it is important for the user to be electrically discharged before touching the product with his/her hands
or tools. This is most easily done by touching a metal part of your system housing.
If the product contains batteries for RTC or memory backup, ensure that the product is not placed on conductive
surfaces, including anti-static plastics or sponges. They can cause short circuits and damage the batteries or
conductive circuits on the product.

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Lithium Battery Precautions
If your product is equipped with a lithium battery, take the following precautions when replacing the battery.
Danger of explosion if the battery is replaced incorrectly.
Replace only with same or equivalent battery type recommended by the manufacturer.
Dispose of used batteries according to the manufacturer’s instructions.
General Instructions on Usage
In order to maintain Kontron’s product warranty, this product must not be altered or modified in any way. Changes or
modifications to the product, that are not explicitly approved by Kontron and described in this user guide or received
from Kontron Support as a special handling instruction, will void your warranty.
This product should only be installed in or connected to systems that fulfill all necessary technical and specific
environmental requirements. This also applies to the operational temperature range of the specific board version
that must not be exceeded. If batteries are present, their temperature restrictions must be taken into account.
In performing all necessary installation and application operations, only follow the instructions supplied by the
present user guide.
Keep all the original packaging material for future storage or warranty shipments. If it is necessary to store or ship
the product then re-pack it in the same manner as it was delivered.
Special care is necessary when handling or unpacking the product. See Special Handling and Unpacking Instruction.
Quality and Environmental Management
Kontron aims to deliver reliable high-end products designed and built for quality, and aims to complying with
environmental laws, regulations, and other environmentally oriented requirements. For more information regarding
Kontron’s quality and environmental responsibilities, visit http://www.kontron.com/about-kontron/corporate-
responsibility/quality-management.
Disposal and Recycling
Kontron’s products are manufactured to satisfy environmental protection requirements where possible. Many of the
components used are capable of being recycled. Final disposal of this product after its service life must be
accomplished in accordance with applicable country, state, or local laws or regulations.
WEEE Compliance
The Waste Electrical and Electronic Equipment (WEEE) Directive aims to:
Reduce waste arising from electrical and electronic equipment (EEE)
Make producers of EEE responsible for the environmental impact of their products, especially when the product
become waste
Encourage separate collection and subsequent treatment, reuse, recovery, recycling and sound environmental
disposal of EEE
Improve the environmental performance of all those involved during the lifecycle of EEE
Environmental protection is a high priority with Kontron.
Kontron follows the WEEE directive
You are encouraged to return our products for proper disposal.

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Table of Contents
Symbols.................................................................................................................................................................................................................6
For Your Safety ...................................................................................................................................................................................................7
General Instructions on Usage..................................................................................................................................................................... 8
1/ Product overview.......................................................................................................................................................................................11
2/ Technical data............................................................................................................................................................................................13
2.1. Dimensions and weight...........................................................................................................................................................................13
2.2. Environmental conditions .....................................................................................................................................................................13
2.3. Power supply .............................................................................................................................................................................................14
2.4. Materials ..................................................................................................................................................................................................... 15
2.5. Type Label and Product Identification............................................................................................................................................... 15
2.6. Accessories.................................................................................................................................................................................................16
3/ Design and function ................................................................................................................................................................................. 17
3.1. Description of the function of the base part.................................................................................................................................... 17
Processor .................................................................................................................................................................................................. 17
BIOS ............................................................................................................................................................................................................ 17
NOR-Flash................................................................................................................................................................................................ 17
DDR3L RAM.............................................................................................................................................................................................. 17
MicroSD..................................................................................................................................................................................................... 17
eMMC.........................................................................................................................................................................................................18
Status LEDs..............................................................................................................................................................................................18
Power Management and Power Button ........................................................................................................................................18
Thermal Management .........................................................................................................................................................................19
RTC............................................................................................................................................................................................................19
Watchdog ................................................................................................................................................................................................19
Ethernet...................................................................................................................................................................................................19
3.2. Pin assignment base part.....................................................................................................................................................................20
Power supply Connector X1................................................................................................................................................................21
Ethernet connector X2 and X3.......................................................................................................................................................... 21
HDMI connector X7 .............................................................................................................................................................................. 22
USB 2.0 Host: connector X4.............................................................................................................................................................. 22
3.3. Functional description of the extension of the model CU 5x-2x1x......................................................................................... 23
FRAM......................................................................................................................................................................................................... 23
Under Windows operating system FRAM is not supported.............................................................................................................. 23
Serial interface RS232 ........................................................................................................................................................................ 23
Serial interface RS485........................................................................................................................................................................ 23
CAN ........................................................................................................................................................................................................... 23
3.4. Pin assignment of the extension of the model CU 5x-2x1x ...................................................................................................... 23
RS232 Connector X8 ............................................................................................................................................................................ 24
CAN Connector X9.1.............................................................................................................................................................................24
RS485 Connector X9.2........................................................................................................................................................................ 25
4/ Assembly and installation.................................................................................................................................................................... 26
4.1. DIN rail mounting ..................................................................................................................................................................................... 27
5/ Commissioning ......................................................................................................................................................................................... 28
5.1. Power supply.............................................................................................................................................................................................28
5.2. Grounding...................................................................................................................................................................................................28
5.3. Operating system .................................................................................................................................................................................... 28

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Microsoft Windows 10 IoT Enterprise............................................................................................................................................28
Linux .........................................................................................................................................................................................................28
5.4. System configuration with Linux Debian ........................................................................................................................................28
5.5. HTML5 Browser with Linux Debian ................................................................................................................................................... 29
5.6. Soft-PLC CODESYS with Linux Debian .............................................................................................................................................. 29
5.7. CODESYS Visualizations with Linux Debian .................................................................................................................................... 29
5.8. Backup/Restore the system (Live System).................................................................................................................................... 30
6/ Maintenance...............................................................................................................................................................................................31
6.1. Battery replacement................................................................................................................................................................................31
6.2. Cleaning ...................................................................................................................................................................................................... 32
7/ Malfunctions ............................................................................................................................................................................................. 33
8/ Decommissioning and disposal ..........................................................................................................................................................34
9/ Technical drawings ................................................................................................................................................................................. 35
9.1. Views and dimensions model CU 5x-251x (mounting upright)................................................................................................. 35
9.2. Views and dimensions model CU 5x-241x (mounting flat)....................................................................................................... 36
10/Technical Support.................................................................................................................................................................................... 37
10.1. Warranty ................................................................................................................................................................................................... 37
10.2. Returning Defective Merchandise ................................................................................................................................................... 38
Appendix A: List of Acronyms..................................................................................................................................................................... 39
Appendix B: Product Configurations........................................................................................................................................................40
List of Tables
Table 1: Product Versions................................................................................................................................................................................11
Table 2: Detail configuration of the product versions ..........................................................................................................................11
Table 3: Accessories for the Control Unit.................................................................................................................................................16
Table 4: Possible processors........................................................................................................................................................................ 17
Table 5: Status LEDs........................................................................................................................................................................................18
Table 6: Power Management Energy States (ACPI)..............................................................................................................................18
Table 7: Power Button Function ..................................................................................................................................................................19
Table 8: Signaling Ethernet Interface status ..........................................................................................................................................19
Table 9: Interfaces ..........................................................................................................................................................................................20
Table 10: Power supply Connector X1........................................................................................................................................................21
Table 11: Ethernet connector X2 and X3....................................................................................................................................................21
Table 12: Interfaces of the extension of the model CU 5x-2x1x....................................................................................................... 23
Table 13: RS232 Connector X8..................................................................................................................................................................... 24
Table 14: CAN Connector X9.1 ......................................................................................................................................................................24
Table 15: RS485 Connector X9.2 ................................................................................................................................................................. 25
Table 16: Malfunctions................................................................................................................................................................................... 33
Table 17: List of used Acronyms ................................................................................................................................................................. 39
List of Figures
Figure 1: Type Label.......................................................................................................................................................................................... 15
Figure 2: Interfaces/Connectors Base part Front side .......................................................................................................................20
Figure 3: Interfaces/Connectors Base part Back side.........................................................................................................................20
Figure 4: Interfaces/Connectors Extension part Front side of the model CU 5x-2x1x ............................................................ 23
Figure 5: Interfaces/Connectors Extension part Back side of the model CU 5x-2x1x..............................................................24
Figure 6: Mounting and dismounting a Control Unit on a DIN rail................................................................................................... 27
Figure 7: Battery replacement......................................................................................................................................................................31
Figure 8: Views and dimensions model CU 5x-251x (mounting upright)...................................................................................... 35
Figure 9: Views and dimensions model CU 5x-241x (mounting flat)............................................................................................. 36

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1/ Product overview
The Control Units CU 5x-2xxx modules were designed for industrial use and for very long availability. The control
units are extremely flexible and can be optimally adapted to the respective requirements due to the factory
expansion capability with an interface module, the single to quad-core variants and variable memory configurations.
In addition to the continuously expanding portfolio of standard expansion modules, it is also possible to expand the
system cost-effectively with a customer-specific or newly developed module.
They are available with WIN10IoT or Linux with optional soft PLC CODESYS.
The manual applies to the product platform "Control Unit CU" which, as mentioned above, is available in various
versions is available. The product key 5x-2xxx-xxxxx determines the respective version. For details on the product
key see Appendix B.
The product versions in Table 1 are available as standard products. Other versions are available on request (subject
to minimum order quantity). For further information please contact our sales department.
Table 1: Product Versions
Article No.
Name
Versions
11593
Control Unit CU 54-2510-58521
CU with Intel Atom E3845, CAN, RS-232, RS485, upright
11604
Control Unit CU 54-2410-58521
CU with Intel Atom E3845, CAN, RS-232, RS485, flat-lying
Table 2: Detail configuration of the product versions
Version
11593
11604
On the base system
Intel Atom E3815 1.46GHz Single Core Processor
Intel Atom E3825 1.33GHz Dual Core Processor
Intel Atom E3845 1.91GHz Quad Core Processor
x
x
SO-DIMM Slot
x
x
DDR3L RAM 2GByte
DDR3L RAM 4GByte
x
x
eMMC 16GByte
eMMC 32GByte
x
x
eMMC 64GByte
ENET 10/100/1000 Mbit Ethernet
2
2
PMIC
x
x
RTC
x
x
WDT
x
x
UEFI BIOS
x
x
USB 2.0 Host
2
2
HDMI
x
x
microSD Card Slot
x
x
Power Button
x
x
Status LED (programmable)
x
x

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On the extension module
FRAM up to 512kByte†
128kB
128kB
CAN/CANopen (isol.) †
x
x
RS-232
x
x
RS-485 (isol.)
x
x
Profibus (isol.) †
Operating system
Microsoft Windows 10 IoT Enterprise license
Linux Debian
Software
Soft-SPS CODESYS Runtime system license
Soft-SPS CODESYS Target-Visu license
Soft-SPS CODESYS Web-Visu license
Mechanik
Stainless steel housing with DIN rail clamp
x
x
Mounting type vertical (book form)
x
Mounting type flat-lying
x
†: only supported with Linux.

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2/ Technical data
Depending on the version und geographical region, the Control Unit can have the following properties (existing
versions see Fehler! Verweisquelle konnte nicht gefunden werden.Product overview):
Intel Atom E38xx processor of your choice:
E3815 with 1.46GHz Single-Core x86 processor
E3825 with 1.33GHz Dual-Core x86 processor
E3845 with 1.91GHz Quad-Core x86 processor
up to 128 GByte eMMC Flash memory
up to 8 GByte DDR3 RAM
static memory (NV RAM) FRAM up to 512 kByte
Slot for microSD FlashCards up to SDXC format
up to two independent Gigabit Ethernet interfaces on RJ45 (8P8C) connectors
up to two USB Host interfaces on 4-pol. USB plug type A
one HDMI on HDMImini connector
one serial COM interfaces RS232 on 9-pin DSUB connector
one serial RS485 interface, galv. insulated on 4-pin Phoenix connector
one CANopen/Basic-CAN interface, galv. insulated on 4-pin Phoenix connector
battery-supported, processor-independent real-time clock (RTC)
processor-independent Watchdog Timer
Power Button
1x programmable status LED
Power supply 24 VDC ±20%, on 3-pin. Phoenix connector
DIN rail mounting
2.1. Dimensions and weight
External dimensions: W × H × D: 38.2 x 185.6 x 92 mm (without plugs/rail clamps)
Weight: 660 g
2.2. Environmental conditions
List of permissible ambient conditions for the operation of the product.
Ambient temperature operation: 0 … +55 °C
Ambient temperature storage: -20 … +70 °C
Humidity: 10 - 90 % (non-condensing)
Pollution degree 2 acc. IEC 61010-1
Operating Altitude: max. 3000m above sea level
Atmosphere: free of corrosive or explosive gases
Protection class acc. IEC60529: IP20
EMC with correct wiring and shielding of the interfaces:
according to EN 61000-6-2 Immunity (Industrial sector)
according to EN 61000-6-4 Emission (Industrial sector)
This device is intended exclusively for use in industrial environments. In domestic
environments this device may cause radio interference. In this case the user must take
appropriate measures.

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No use in potentially explosive areas!
Use in hazardous areas can result in death, serious injury or considerable damage to
property.
The device is not designed for use in hazardous areas and does not have the appropriate
approvals.
2.3. Power supply
Supply voltage: +24 VDC ±20 %
Current consumption: 0.15 A –1.25 A
Power consumption1: 3.6 W –30 W
Internal fusing: 2A melting fuse
External fusing with max.40A fuse required
On primary side overvoltage category II max. 300V
Recommended design of the power supply unit: Voltage/ output power: 24 VDC / min. 30 W
The output of the power supply unit must meet the criteria of a safety extra-low voltage
(SELV) according to IEC 60664-1.
The use of an unsuitable power supply unit can result in danger of electric shock.
The power cable must be rated for a temperature of +75° C or higher.
The cable can become damaged over time or potentially harmful plasticizers could be
released in the surrounding air if cables with a lower temperature rating are being used.
The power consumption depends on the configuration as well as the type and number of
active interfaces.
The internal fuse is not replaceable. Defective fuses must be replaced by qualified Kontron
service.
USB devices connected to USB 2.0 interfaces may consume a maximum of 0.5A per interface.
1depending on processor load and interface activity

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2.4. Materials
The following materials are used for the housing of the Control Unit:
Housing: stainless steel
Heat sink: aluminum
This product complies with the RoHS Directive 2011/65/EU and the Delegate Directive (EU)
2015/863 amending Annex II of Directive 2011/65/EU (RoHS 3)
With regard to the REACH regulation or conflict minerals, please refer to the information on
our website at:
https://www.kontron.de/ueber-uns/corporate-responsibility/material-declaration/reach-
customer-information
2.5. Type Label and Product Identification
The type plate is located on the top side next to the heat sink of the Control Unit.
Figure 1: Type Label
Certifications
Read the manual before installation and
commissioning and follow the hazard warnings.
Do not dispose of in the
household waste.
Product designation
Technical data
Production label with article
and revision number,
delivery lot number and
production date
Information about
connections at the front.
Information
about elements
on the back
Minus pole of
the battery in the
direction of the type
plate

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2.6. Accessories
Table 3: Accessories for the Control Unit
Article No.
Designation
Comment
90215
Handbuch Control Unit CU 5x-2xxx
Deutsches Handbuch
90196
System Manual Linux
Deutsches Handbuch
90216
User Guide Control Unit CU 5x-2xxx
English User Manual
90208
System Manual Linux
English User Manual

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3/ Design and function
3.1. Description of the function of the base part
Processor
Depending on the version, the Control Unit is equipped with one of the following Intel® Atom™ processors:
Table 4: Possible processors
Designation
Cache
Clock frequency
Number of cores
Intel® Atom™ Processor E3815
1MB
1.46GHz
1 (Single Core)
Intel® Atom™ Processor E3825
1MB
1.33GHz
2 (Dual Core)
Intel® Atom™ Processor E3845
2MB
1.91GHz
4 (Quad Core)
BIOS
The BIOS controls the following functionalities among others:
Phoenix Technologies SecureCore Technology for the E38xx platform
UEFI BIOS for 32- and 64-Bit Operating systems
UEFI/Legacy Boot Option
Booting from USB, LAN, SD and eMMC
Virtualization (Intel VT-x)
Built-in UEFI Shell
BIOS Password
Execute Disable (XD)
USB Support
Fast Boot
NOR-Flash
The NOR flash memory installed on the Control Unit serves as BIOS memory. Its storage capacity is 64Mb.
DDR3L RAM
DDR3L-RAM is used as working memory.
The CPU module provides a SO-DIMM-204 slot. The total memory capacity is minimum 1GByte up to maximum
4GByte for single-core processors and maximum 8GB for multi-core processors. For North America the maximum
memory capacity is either 2GByte or 4GByte for all processor types. The assembly is done in the factory.
MicroSD
The microSD card slot X14 integrated on the base module allows the use of SD cards up to SDXC format. The 4-bit
wide SDIO interface is routed directly from the processor to the microSD slot.
Supported UHS-I Modes: HS, DDR50, SDR12, SDR25
Modes: 1 bit, 4 bit

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Maximum data rate: 400Mbit/s (in 4 bit Mode)
The microSD card must be inserted with the contacts facing the heat sink.
MicroSD cards available in consumer electronics stores are generally not designed or
suitable for industrial applications. A lifetime in terms of write/erase cycles is often not
specified for these cards and is in the range of a few hundred cycles.
When purchasing microSD cards, make sure that the card is suitable for the application and
environmental conditions.
Unexpected data loss or device failure can result when using unsuitable microSD cards.
Kontron recommends microSD cards from swissbit®.
eMMC
The bootable eMMC (JEDEC 5.0) built into the Control Unit serves as operating system and program memory.
Depending on the version and geographical region, the storage capacity is 4GB, 8GB, 16GB, 32GB, 64GB or 128GB.
Status LEDs
There are two status LEDs next to the X1 Power connector.
Table 5: Status LEDs
Designation
Colour
Meaning
PWR
Green
Lights up permanently if 24V supply is available and the device is not in state
G2/S5 (see chapter 3.1.8)
S1
Blue
Connected to GPIO of the processor. Can be controlled by user software. In
delivery state without function (always on).
Power Management and Power Button
The Power Button is located below the power connector X1 next to the PWR status LED.
The Control Unit supports the following power states of the Intel processor:
Table 6: Power Management Energy States (ACPI)
G/S State
Description
G0/S0
FULL ON
CPU is running. Peripherals can be individually set to power save
mode.
G1/S3
Suspend-to-RAM (STR)
Standby-Modus
Most of the hardware is switched off, the operating status is
stored in the volatile memory (RAM). The system can be woken up.
G1/S4
Suspend-to-Disk (STD)
Idle state
The operating state is stored in non-volatile memory (boot
medium). The system can be woken up.
G2/S5
Soft-Off
System is switched off (except RTC), but the supply voltage is
present, therefore the system can be reactivated via the Power
Button.

Control Units CU 5x-2xxx –Rev. 1.A
www.kontron.com // 19
Table 7: Power Button Function
Initial state
Status after pressing the Power Button
G0/S0
G2/S5
G1/S3 or G1/S4
G2/S5
G2/S5
G0/S0
The Power Button must be held down for at least 0.5s.
The function of the Power Buttons can be changed in the Control Panel under Windows (e.g. target state G1 instead of
G2 from G0).
If the Power Button is held down for more than 4 seconds, the Control Unit goes into state G2/S5, independent of the
configuration and processor state.
The setting in the BIOS under Advanced -> Miscellaneous Configuration -> "State after G3"
has no effect due to the specific hardware of the control unit. From state G3 (disconnected
from power supply) the device will always start automatically and go to state G0/S0.
Thermal Management
The internal processor temperature is used to throttle the clock rate and to shut down the operating system in case
of overtemperature.
RTC
The RTC RX-8564LC from Seiko Epson is used as clock component. In combination with a backup battery, the time
continues to run even in case of a power failure. The specified maximum deviation of the frequency corresponds
approximately to the deviation of one minute per month. For correct operation, the appropriate driver from Kontron
Electronics must be installed.
Watchdog
On the CPU module, the 32-bit binary counter DS1374 from Maxim is used as watchdog. For correct operation, the
appropriate driver from Kontron Electronics must be installed.
Ethernet
Two Gigabit Ethernet interfaces are controlled via the PCIe interface of the CPU module. The WGI210 from Intel is
used as Ethernet controller.
LEDs signal the respective interface status.
Table 8: Signaling Ethernet Interface status
LED orange (activity)
LED green (link1000)
off: no activity, no link
off: no link1000
blink: activity, link
on: link1000

Control Units CU 5x-2xxx –Rev. 1.A
www.kontron.com // 20
3.2. Pin assignment base part
The Control Unit has the following connectors:
Table 9: Interfaces
Connector
Type
Purpose
X1
3-pole pluggable terminal pitch 5 mm for 24 VDC supply
Power
X2
RJ45 (8P8C) Connector for Ethernet
Ethernet
X3
RJ45 (8P8C) Connector for Ethernet
Ethernet
X4
2 port USB Host connector type A
USB 2.0
X6
microSD Card Slot
microSD
X7
HDMI, 19-pin for connector type C (mini)
HDMI
Figure 2: Interfaces/Connectors Base part Front side
Figure 3: Interfaces/Connectors Base part Back side
1
2
3
X2 NET1
X3 NET2
X7 HDMI
X4 USB 1/2
PWR S1
X1 POWER
E1
X6