Kontron BL Pi-Tron CM3+ User manual


USER GUIDE
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BL Pi-Tron CM3+
Doc. Rev. 1.1

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
BL PI-TRON CM3+ USER GUIDE
Disclaimer
Kontron Electronics 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 Electronics products. This document does
not entail any guarantee on the part of Kontron Electronics with respect to technical processes described in the
user guide or any product characteristics set out in the user guide. Kontron Electronics 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 Electronics makes no representation or warranty that
such application will be suitable for the specified use without further testing or modification. Kontron Electronics
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 Electronics.
This user guide is protected by copyright. All rights are reserved by Kontron Electronics. 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 theexpress writtenpermission of Kontron Electronics.KontronElectronics pointsout thatthe information
contained in this user guide is constantly being updated in line with the technical alterations and improvements
made by Kontron Electronics to the products and thus this user guide only reflects the technical status of the
products by Kontron Electronics at the time of publishing.
Brand and product names are trademarks or registered trademarks of their respective owners.
©2022 by Kontron Electronics GmbH
YOUR CONTACT
Kontron Electronics GmbH
Max-Planck-Str. 6
72636 Frickenhausen
Germany
www.kontron-electronics.com
GLOBAL HEADQUARTERS
Kontron Europe GmbH
Gutenbergstr. 2
85737 Ismaning
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 Electronics 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 Electronics hardware or software components incorporated in your systems) meet all
applicable requirements. Unless otherwise stated in the product documentation, the Kontron Electronics device is
notprovided witherror-tolerance capabilities andcannottherefore bedeemed asbeingengineered,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 Electronics 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
Rev. 0.1
Initial version
2020-10-06
We
Rev. 1.0
Final release
2022-02-28
We
Rev. 1.1
New logos, minor corrections
2023-08-07
We
Terms and Conditions
Kontron Electronics 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
https://www.kontron-electronics.de/downloads/.
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 Electronics contacts by visiting: www.kontron-electronics.com
Customer Comments
If you have any difficulties using this user guide, discover anerror, or just wantto providesome feedback, contact
[email protected]. Detail any errors you find. We will correct the errors or problems as soon as
possible and provide the revised user guide.

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Symbols
The following symbols may be used in this user guide
DANGERindicatesa hazardoussituationwhich,ifnotavoided,will resultindeath orserious
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 (> 60 V) 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
tostaticelectricity.Caremustalwaysthereforebetakenduringallhandlingoperationsand
inspections of this product in order to ensure product integrity.
HOT Surface!
Do NOT touch! Allow to cool before servicing.
Laser!
This symbol informs 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.

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For Your Safety
Your new Kontron Electronics 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
Electronics product, you are requested to conform with the following guidelines.
High Voltage Safety Instructions
As a precaution and in case of danger, the power connector must be easily accessible. The power connector is the
Warning
All operations on this product must be carried out by sufficiently skilled personnel only.
Electric Shock!
Before installing a non-hot-swappable Kontron Electronics product into a system always
ensure that the power is switched off. This also applies to the installation of piggybacks.
Serious electrical shock hazards can exist during all installation, repair, and maintenance
operationson thisproduct.Therefore,always unplugthe power cableand anyother cables
which provide external voltages before performing any work on this product.
connected. The earth ground cable shall be the last cable to be disconnected or the first
cabletobeconnectedwhenperforminginstallationorremovalproceduresonthisproduct.

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General Safety Instructions for IT Equipment
Please read this chapter carefully and take careful note of the instructions that have been
compiled for your safety and to ensure to apply in accordance with intended regulations. If
the following general safety instructions are not observed, it could lead to injuries to the
operator and/or damage of the product; in cases of non-observance of the instructions
Kontron Electronics is exempt from accident liability, this also applies duringthe warranty
period.
Theproducthas beenbuiltandtested according tothebasicsafetyrequirementsforlowvoltage(LVD)applications
and has left the manufacturer in safety-related, flawless condition. To maintain this condition and to ensure safe
operation, the operator must not only observe the correct operating conditions for the product but also the
following general safety instructions:
The product must be used as specified in the product documentation, in which the instructions for safety for
the product and for the operator are described. These contain guidelines for setting up, installation and
assembly, maintenance, transport and storage.
The on-site electrical installation must meet the requirements of the country's specific local regulations.
If a power cable comes with the product, only this cable should be used. Do not use an extension cable to
connect the product.
To guarantee that enough air circulation is available to cool the product, ensure that if the product has
ventilation openings the openings are not covered or blocked. If an air filteris provided, this should be cleaned
regularly. Additionally, make sure the system is well ventilated by observing if heat-dissipating elements are
covered/obstructed by objects as this can cause a build-up of heat and stop heat from being dispersed into
the ambient environment.
Do not place the system close to heat sources or damp places.
Only products or parts which fulfil the requirements of SELV circuits (Safety Extra Low Voltage) as stipulated
by IEC 60950-1 may be connected to the available interfaces.
If the product is modified by insertion or removal of expansion devices (depending on the configuration of the
system), this may only be carried out by qualified persons.
If extensions are made to the product, the following must be observed:
All effective legal regulations and all technical data for the expansiondevices are adhered to.
The power consumption of any expansion devices does not exceed the specified limitations.
The current consumption of the system does not exceed the value stated on the product label.
Only original accessories that have been approved by Kontron Electronics can be used.
Please note: safe operation is no longer possible when any of the following applies:
Damage is visible.
The device no longer functions.
In these cases, the device must be switched off and it must be ensured that the device can no longer be
operated.

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Additional Safety Instructions for DC Power Supply Circuits
To guarantee safe operation of products with DC power supply voltages larger than 60 volts DC or a power
consumption larger than 240 VA, please observe that:
The product is setup, installed and operated ina room or enclosure markedwith RESTRICTED ACCESS , if
there are no safety messages on product as safety signs and labels on the product itself.
No cables or parts without insulation in electrical circuits with dangerous voltage or power should be
touched directly or indirectly.
A reliable protective earthing connection is provided.
A suitable, easily accessible disconnecting product is used in the application (e.g. overcurrent protective
product), if the product itself is not disconnectable.
A disconnect product, if provided in or as part of the equipment, shall disconnect both poles
simultaneously.
Interconnecting power circuits of different products causes no electrical hazards.
A sufficient dimensioning of the power cable wires must be selected -- according to the maximum electrical
specificationsontheproductlabel-- asstipulatedbyEN60950-1or VDE0100orEN60204orUL508 regulations.
The product doesnot generally fulfilthe requirementsfor "centralized DC power systems (UL 60950-1, Annex
NAB; D2) and therefore may not be connected to such products!
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 workstations. Where a safe workstation 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 touchinga metal part of your system housing.
It is particularly important to observe standard anti-static precautions when changing piggybacks, ROM devices,
SD cards, jumper settings etc. If the product contains batteries forRTC 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
General Instructions on Usage
In order to maintain Kontron Electronics’ 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 Electronics and described in this user guide or
received from Kontron Electronics Support as a special handling instruction, will void your warranty.
This product should only be installed in or connected to systems that fulfil 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 considered.
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
KontronElectronicsaims todeliver reliablehigh-endproductsdesignedandbuiltfor quality,and aimstocomplying
with environmental laws, regulations, and other environmentally oriented requirements. For more information
regarding Kontron Electronics
https://www.kontron-electronics.com/company/about-us/germany/
Disposal and Recycling
KontronElectronics
Manyofthe componentsusedare capableof beingrecycled.Final disposal of thisproductafter itsservicelifemust
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.
Encourageseparate collectionandsubsequent treatment,reuse, recovery,recyclingand soundenvironmental
disposal of EEE.
Improve the environmental performance of all those involved during the lifecycle of EEE.
Environmental protection is ahigh priority with Kontron Electronics.
Kontron Electronics 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
High Voltage Safety Instructions..............................................................................................................................................................7
Special Handling and Unpacking Instruction ....................................................................................................................................... 9
Lithium Battery Precautions.....................................................................................................................................................................10
General Instructions on Usage.................................................................................................................................................................10
Quality and Environmental Management............................................................................................................................................10
Disposal and Recycling...............................................................................................................................................................................10
WEEE Compliance.........................................................................................................................................................................................10
Table of Contents..........................................................................................................................................................................................11
List of Tables..................................................................................................................................................................................................13
List of Figures................................................................................................................................................................................................13
Introduction......................................................................................................................................................................................14
Product Overview...................................................................................................................................................................................14
Ordering Information...........................................................................................................................................................................15
Accessories.............................................................................................................................................................................................15
Specification.....................................................................................................................................................................................16
Technical Specification........................................................................................................................................................................16
Mechanical Specification...................................................................................................................................................................16
Power Specification.............................................................................................................................................................................18
2.3.1. Power Consumption.........................................................................................................................................................................18
2.3.2. Functional Earthing System ..........................................................................................................................................................19
2.3.3. Environmental Specification.........................................................................................................................................................19
Block Diagram ......................................................................................................................................................................................20
Connector Description..................................................................................................................................................................21
Overview..................................................................................................................................................................................................21
3.1.1. Power Connector...............................................................................................................................................................................22
3.1.2. Micro-HDMI Interface......................................................................................................................................................................22
3.1.3. Ethernet (LAN2, LAN1) Interface..................................................................................................................................................22
3.1.4. USB 2.0 Interface..............................................................................................................................................................................22
3.1.5. RS232 Interface.................................................................................................................................................................................22
3.1.6. CAN Interface .....................................................................................................................................................................................22
3.1.7. RS485 Interface.................................................................................................................................................................................22
3.1.8. DIO Interface.......................................................................................................................................................................................23
3.1.9. USB OTG Interface............................................................................................................................................................................23
3.1.10. MicroSD Card Slot...........................................................................................................................................................................23
3.1.11. +5 V Display Connector..................................................................................................................................................................23
3.1.12. CSI (Camera Serial Interface)......................................................................................................................................................23
3.1.13. DSI (Display Serial Interface) ......................................................................................................................................................23
3.1.14. 40-pin RPI-GPIO-Header..............................................................................................................................................................24
3.1.15. Debug Interface ...............................................................................................................................................................................24
3.1.16. Fan Connector..................................................................................................................................................................................24
3.1.17. Functional Earth Connection.......................................................................................................................................................24
Connector Pin Assignments.............................................................................................................................................................25
3.2.1. Input Power Connector (X3)..........................................................................................................................................................25
3.2.2. Micro-HDMI Connector (X500)....................................................................................................................................................25
3.2.3. Ethernet RJ45 Connectors (X600, X700)..................................................................................................................................26
3.2.4. USB Connector (X601)....................................................................................................................................................................26
3.2.5. RS232 Connector (X15)...................................................................................................................................................................26
3.2.6. RS485/CAN Connector (X18)........................................................................................................................................................27

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3.2.7. DIO Connector (X19).........................................................................................................................................................................27
3.2.8. USB OTG Connector (X402)..........................................................................................................................................................27
3.2.9. MicroSD Card Slot (X400) .............................................................................................................................................................28
3.2.10. +5 V Display Connector (X1201).................................................................................................................................................28
3.2.11. CSI Connector (CameraSerial Interface, X1001)...................................................................................................................28
3.2.12. DSI Connector (DisplaySerial Interface, X1000)..................................................................................................................29
3.2.13. 40-pin RPI-GPIO-Header (X800)...............................................................................................................................................29
3.2.14. USB Debug Connector (X401).....................................................................................................................................................30
3.2.15. Fan Connector (X1200).................................................................................................................................................................30
Accessing Components................................................................................................................................................................31
Accessing External Components.....................................................................................................................................................31
4.1.1. MicroSD Card Slot ..............................................................................................................................................................................31
Thermal Considerations..............................................................................................................................................................32
Passive Cooling.....................................................................................................................................................................................32
Installation Instructions..............................................................................................................................................................33
Requirements IEC60950-1.................................................................................................................................................................33
Power Connector.................................................................................................................................................................................33
6.2.1. Wiring the DC Mating Power Connector ...................................................................................................................................34
Starting Up.......................................................................................................................................................................................35
Connecting to Power Supply ............................................................................................................................................................35
Operating System (OS) and Drivers...............................................................................................................................................35
Standards, Certifications and Directives...............................................................................................................................36
Shipment and Unpacking............................................................................................................................................................37
Packaging................................................................................................................................................................................................37
Unpacking..............................................................................................................................................................................................37
Type Label and Product Identification..........................................................................................................................................37
Technical Support.........................................................................................................................................................................38
First Steps -- Startup-Information Baseboard..........................................................................................................................38
Extended Support..............................................................................................................................................................................38
Disclaimer & License Information................................................................................................................................................38
Storage, Transportation and Maintenance...........................................................................................................................39
Storage....................................................................................................................................................................................................39
Transportation....................................................................................................................................................................................39
Maintenance.........................................................................................................................................................................................39
11.3.1. Replacing the Lithium Battery.....................................................................................................................................................39
Warranty..........................................................................................................................................................................................40
Limitation/Exemption from Warranty Obligation...................................................................................................................40
Disposal.............................................................................................................................................................................................41
Appendix.........................................................................................................................................................................................................42
List of Acronyms..........................................................................................................................................................................................42
About Kontron Electronics.......................................................................................................................................................................43

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List of Tables
Table 1: Scope of Delivery..........................................................................................................................................................................15
Table 2: Accessories....................................................................................................................................................................................15
Table 3: Technical Specification..............................................................................................................................................................16
Table 4: Software Specification...............................................................................................................................................................16
Table 5: Mechanical Specification...........................................................................................................................................................16
Table 6: Power Specification....................................................................................................................................................................18
Table 7: Power Consumption....................................................................................................................................................................19
Table 8: Environmental Specification....................................................................................................................................................19
Table 9: Overview of all Connectors......................................................................................................................................................21
Table 10: Standards, Certifications and Directives Compliance...................................................................................................36
Table 11: List of Acronyms........................................................................................................................................................................42
List of Figures
Figure 1: BL Pi-Tron CM3+..........................................................................................................................................................................14
Figure 2: Dimensions...................................................................................................................................................................................17
Figure 3: Power Tree....................................................................................................................................................................................18
Figure 4: Block Diagram ............................................................................................................................................................................20
Figure 5: Top Side View...............................................................................................................................................................................21
Figure 6: UART-USB Adapter...................................................................................................................................................................30
Figure 7: Phoenix Power Mating Connector .......................................................................................................................................33
Figure 8: BL Pi-Tron CM3+ Type Label (Example)............................................................................................................................37

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Introduction
This user guide describes the Board-Line BL Pi-Tron CM3+. New users are recommended to study the installation
instructions within this user guide before switching on the power.
Kontron Electronics BL Pi-Tron CM3+ is developed specifically for easy entry into the world of professional
industrial controls, with a wide range of interfaces and for use when space is limited. The fanless design ensures
a significantly prolonged lifespan and high system availability.
Product Overview
Before working with the BL Pi-Tron CM3+,Kontron Electronics recommends that users take a few minutes to learn
about the various parts of the BL Pi-Tron CM3+.
TheBLPi-Tron CM3+is aflexible single board computer fanlessdevice designedfor use indemanding applications.
Based on the Pi-Tron (4x Arm® Cortex®-A53, 1x Arm® Cortex®-M4) Quad processor the BL Pi-Tron CM3+ features
long-term availability and supports a varied number of onboard interfaces to enable connectivity to nearly all
applications. A microSD card slot supports memory expansion for flexible data storage.
All variants are also available as a separate product named Automation-Line AL Pi-Tron CM3+ in a robust steel
chassis, designed for operation in a DIN rail environment using a vertical orientation.
Please contact us for detailed information or visit: http://www.kontron-electronics.de
General features are:
Broadcom® BCM2837B0 4x Arm® Cortex®-A53 @1,2 GHz
1 GB RAM with LPDDR2 soldered memory
8 GB or 32 GB memory storage via soldered eMMC
External microSD card slot or internal eMMC flash drive
External Interfaces: 1x Micro-HDMI, 2x 10/100 Mbit/s Ethernet, 2x USB 2.0 Host, 1x USB OTG (only for
programming eMMC), 1x RS232, 1x RS485, 1x CAN, 4x DIO (24 V/up to 800 mA), 1x CSI, 1x DSI, 1x 40-pin RPI-
GPIO-Header, 1x Debug Interface, 1x Fan Connector, 1x +5 V Display Connector
Fanless passive cooling (heatsink required)
The BL Pi-Tron CM3+ is intended for 24/7 continuous operation and longtime industrial applications. All
components are selected to ensure a long lifetime.
Figure 1: BL Pi-Tron CM3+
TheBLPi-Tron CM3+isdesignedforoperation inacustomer-specificenclosureor device.
Please do not operate the BL Pi-Tron CM3+ without sufficient cooling system. The
maximum temperature range refers only to the limits of the individual components.

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Ordering Information
Checkthatyourdeliveryiscomplete,andcontainstheitemslistedbelow.Ifyoudiscoverdamagedormissingitems,
contact your dealer.
Table 1: Scope of Delivery
Art.-No.
Delivered Item
Description
40099 196
BL Pi-Tron CM3+ lite 1GB/microSD Slot
Corresponding to the ordered product configuration
40099 197
BL Pi-Tron CM3+ 1GB/8GB
Corresponding to the ordered product configuration
40099 198
BL Pi-Tron CM3+ 1GB/32GB
Corresponding to the ordered product configuration
Other systems on request
Accessories
Table 2: Accessories
Art.-No.
Delivered Item
Description
10600 338
MicroSD Card
MicroSD Card 16 GB
30099 001
Power Supply
External power supply 230 V AC to 24 V DC / 18 W
incl. 2-pin power connector (Phoenix Contact origin
no. 1826680)
30099 006
Connector Set
RS232/RS485/CAN/DIO
mating connector
Connector set contains:
1x RS232: 8-pin; 1x RS485/CAN: 8-pin; 1x DIO: 8-pin
(Phoenix Contact origin no. 1844594)
40099 101
USB-UART Adapter
Translates the UART signals provided on the Mini-B
USB connector to USB for connecting the BL Pi-Tron
CM3+ to a computer

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Specification
Technical Specification
The BL Pi-Tron CM3+ implements the following mainboard technical specification.
Table 3: Technical Specification
Processor
4x Arm® Cortex®-A53 @1,2 GHz
System Memory
LPDDR2-RAM 1 GB
Storage
8 GB or 32 GB eMMC
Or microSD card
Interfaces
2x USB 2.0, USB A
1x USB OTG, Micro-USB
1x 1 Gbit/s, 1x 10/100 Mbit/s Ethernet
1x Micro-HDMI
1x RS232, 1x RS485
1x CAN
4x DIO (24 V DC/up to 800 mA)
1x Debug, USB Mini-B
1x Fan
1x +5 V (Display)
1x CSI
1x DSI
1x 40-pin RPI-GPIO-Header
Expansion Sockets
1x external microSD card slot or internal eMMC flash drive
Power
24 V DC ±20 % Input
Table 4: Software Specification
Operating Systems (OS)
Raspberry Pi OS (Raspbian), Yocto, Windows IOT, Ubuntu Desktop/Server/Core,
LibreElec, RetroPie and others
BSP (demo) documentation and support: https://docs.kontron-electronics.de
Mechanical Specification
Table 5: Mechanical Specification
Dimensions
BL Pi-Tron CM3+
Width
105.5 mm (4.15 )
Depth
67 mm (2.64 )
Height
24 mm (0.94 ) without Header / 28 mm (1.10 ) with Header
Weight
Approx. ~0.07 kg (~0.15 lbs.)
Mounting
Screw mounting (M2.5)
For more detailed mechanical information, refer to the outline dimensions drawing within this chapter. Each
dimension drawing shows the main external mechanical features such as the position and size of mounting holes
(all Measurements in millimetres).

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Figure 2: Dimensions

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Power Specification
The BL Pi-Tron CM3+ is powered by a 2-pin input power connector on the front and has no internal power supply.
The standard input voltage of 24 V DC is converted internally to supply all other required voltages.
Hot Plugging the power supply is not supported.Hot plugging might damage the board.
Table 6: Power Specification
Nominal Input Voltage
24 V DC
Input Voltage Range
24 V DC ±20 %
Input Power
Max. 3 A (connector current)
Output Current 3.3 V
Max. 100 mA
Output Current 5 V
Max. 2 A
Output Current DOUT
Max. 2 A
Input Power Mating Connector
2-pin Phoenix Contact 180° FMC 1,5/2-ST-3,5 (Phoenix 1826680)
The maximum output current of all outputs together is divided between the 5 V and 3 V
paths. The maximum output currents for 5 V and 3 V given in the table above each refer to
the use of this voltage only and are reduced accordingly when using both voltages.
2.3.1. Power Consumption
The power consumption of the BL Pi-Tron CM3+ depends on the implemented mainboard capacity and external
interfaces, for more information see Table 7: Power Consumption.
Figure 3: Power Tree

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Table 7: Power Consumption
Power Figures SBC
BL Pi-Tron CM3+
BL Pi-Tron CM3+ Deep Sleep Mode
not supported
BL Pi-Tron CM3+ idle performance
2.7 W
BL Pi-Tron CM3+ run
1x HDMI (typ.)
50 mA * 5 V = 250 mW
LAN 1
1 W
LAN 2
900 mW
2x USB 2.0
2x 500 mA * 5 V = 5 W
DOUT
4x 500 mA * 24 V = 48 W
2.3.2. Functional Earthing System
A functional earthconnection to theboard will bepossible viathe fourmounting holes. These contact surfacesare
directly attached to the electronic ground and the GND pin of the power connector.
2.3.3. Environmental Specification
Table 8: Environmental Specification
Temperature (Operating)
0°C 55°C ambient
Relative Humidity (Operating)
93% @ 40 °C, non-condensing
Pollution Degree
Class II
The BL Pi-Tron CM3+ is designed for operation in a customer-specific enclosure or device.
Please do not operate the BL Pi-Tron CM3+ without sufficient cooling system. The
maximum temperature range refers only to the limits of the individual components.

BL Pi-Tron CM3+ - Rev. 1.1
www.kontron-electronics.com // 20
Block Diagram
Figure 4: Block Diagram