Janz Tec emPC-A/RPI3 Mounting instructions

PROPRIETARY NOTICE
All rights reserved by Janz Tec AG.
No parts of this technical manual may be modified, copied or reproduced
in any form or by any means for commercial use without the prior written
permission of Janz Tec AG, Germany.
All instructions, information and specification contained in this manual
are for reference only and remain subject to change without
announcement.
emPC-A/RPI3
embedded PC
(Hardware and Software Manual)
Version 1.3
refers to product revision no.
1.1

Title:
emPC-A/RPI embedded PC
File:
j:\as\entwicklung\projekte\hw\empc\empc-arpi\doc\manual\manual_empc-arpi3.doc
Pattern:
\\ntserv5\janzgrp\as\entwicklung\formulare\entwicklung (ew)\ew_manual.dot
Created:
Stefan Althöfer, 06.03.2015
Last Update:
Stefan Althöfer, 21.09.2018
© Janz Tec AG 2015
Im Dörener Feld 8
D-33100 Paderborn, Germany
Tel.:
[phone]
FAX:
[phone]
email:
[email protected]
Internet:
www.janztec.com

emPC-A/RPI3 (Hardware and Software Manual) •Contents i
Rev. 1.3 © Janz Tec AG
Contents
1 Introduction 5
1.1 Features...............................................................................................................................5
1.2 Functional Overview ............................................................................................................6
2 Safety Instructions 7
2.1 Installation and Maintenance...............................................................................................7
2.2 Ambient and Environmental Conditions...............................................................................8
3 Installation 9
3.1 Mounting ..............................................................................................................................9
3.2 Connectors and Operators.................................................................................................10
3.2.1 POWER IN....................................................................................................................10
3.2.2 Graphics connector (HDMI)..........................................................................................10
3.2.3 Ethernet Interface .........................................................................................................11
3.2.4 USB host interfaces (USB1-USB4)...............................................................................11
3.2.5 Console (RS232) ..........................................................................................................12
3.2.6 Serial Port (RS232/RS485)...........................................................................................12
3.2.7 CAN ..............................................................................................................................12
3.2.8 Digital IO .......................................................................................................................13
3.2.9 Audio Video...................................................................................................................14
4 Maintenance 15
4.1 Micro SDcard Replacement...............................................................................................16
4.2 Battery Replacement .........................................................................................................16
5 Operating System and Drivers 18
5.1 Standard Raspbian Operating System ..............................................................................18
5.1.1 Installation.....................................................................................................................18
5.2 emPC-A/RPI3 Driver Installation Script .............................................................................18
5.2.1 Installation Instructions .................................................................................................19
5.2.2 CPU Frequency ............................................................................................................19
5.2.3 Bluetooth.......................................................................................................................19
5.2.4 Driver Details ................................................................................................................19
5.2.4.1 spi-bcm2835 : SPI driver (optimized for emPC-A/RPI3) .........................................20
5.2.4.2 mcp2515 : CAN driver (optimized for emPC-A/RPI3) .............................................20
5.2.4.3 sc16is7xx : RS232/RS485 driver (optimized for emPC-A/RPI3).............................20
5.2.4.4 rtc-ds1307 : RTC .....................................................................................................21
5.3 Janz Tec AG Linux Image for emPC-A/RPI3.....................................................................22
5.4 General Information ...........................................................................................................22
5.5 Optional Software...............................................................................................................22
5.5.1 CODESYS Control for Raspberry Pi SL Information....................................................22
5.5.1.1 Information...............................................................................................................23
5.5.1.2 License Information .................................................................................................23
6 Programming Information 24
6.1 User LEDs..........................................................................................................................24
6.2 I²C Bus...............................................................................................................................24
6.3 SPI Bus..............................................................................................................................24
6.4 CAN....................................................................................................................................25
6.5 Serial Port (RS232/RS485)................................................................................................25
6.6 Digital IO ............................................................................................................................25
6.7 Console RS232..................................................................................................................25
6.8 Overclocking ......................................................................................................................26

ii emPC-A/RPI3 (Hardware and Software Manual) •Contents
© Janz Tec AG Rev. 1.3
7 Appendices 27
7.1 Technical Data...................................................................................................................27
7.2 References.........................................................................................................................30
7.3 Dimensions ........................................................................................................................31
7.4 Raspberry GPIO Header....................................................................................................32
7.5 EMC Cable Installation ......................................................................................................33
7.6 Product History...................................................................................................................34
7.7 Manual History...................................................................................................................34

emPC-A/RPI3 (Hardware and Software Manual) •Contents iii
Rev. 1.3 © Janz Tec AG
List of Figures
figure 1: emPC-A/RPI3 block diagram .....................................................................................................6
figure 2: emPC-A/RPI3 mounting options: Desk-top, Wall and DIN Rail .................................................9
figure 3: Multi connector for IO (Power Supply Pins highlighted)...........................................................10
figure 4: RS485 signaling .......................................................................................................................12
figure 5: digital IO detailed schematic ....................................................................................................13
figure 6: emPC-A/RPI3 case bottom part removal................................................................................15
figure 7: emPC-A/RPI3 micro SDcard location......................................................................................15
figure 8: Removing and replacing coin cell battery ................................................................................16
figure 9: housing dimensions..................................................................................................................31
figure 10: EMC Shielding........................................................................................................................33
List of Tables
table 1: Power Supply connector pins....................................................................................................10
table 2: Ethernet connector ....................................................................................................................11
table 3: USB host connector...................................................................................................................11
table 4: Console (RS232) connector ......................................................................................................12
table 5: Serial Port connector pins .........................................................................................................12
table 6: CAN connector pins...................................................................................................................13
table 7: Digital IO connector pins ...........................................................................................................13
Table 8: Internal I²C devices ..................................................................................................................24

iv emPC-A/RPI3 (Hardware and Software Manual) •Contents
© Janz Tec AG Rev. 1.3
About this Manual
This is the hardware manual for the emPC-A/RPI3 embedded PC.
Conventions
If numbers are specified in this manual, they will be either decimal or hexadecimal. We use C-notation
to identify hexadecimal numbers (the 0x prefix).
If we refer to low active signal names, they will suffixed by a “#” character.
Some parts of the manual contains notices you have to observe to ensure your personal safety, or to
prevent damage to property. These are visually marked with the following alert symbols:
DANGER
Indicates that death or severe personal injury will result if proper precautions are not
taken.
WARNING
Indicates that death or severe personal injury may result if proper precautions are not
taken.
CAUTION
Indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
Indicates that damage to equipment can result if proper precautions are not taken.
Indicates information that we think you should have read to save your time by avoiding
common problems. Important suggestions that should be followed will also be marked
with this sign.
Acronyms and Abbreviations
EMC Electromagnetic capability.
ESD Electrostatic discharge.
GND System ground potential. Inside the product this is connected to the metal housing,
which might be connected to protective earth by the installation. There exist some
isolated reference grounds for communication interfaces or IO. These reference
signals are referred to as GND-x, where x indicates function.
SELV Safety extra low voltage.

emPC-A/RPI3 (Hardware and Software Manual) •Introduction 1 - 5
Rev. 1.3 © Janz Tec AG
1 Introduction
1.1 Features
•Raspberry PI 3 Model B powered
oBCM2837 processor, up to 1200MHz quad-core ARM 64bit ARMv8 CPU
o1GB LPDDR2 SDRAM
oHDMI graphics output
o10/100 Mbit/s Ethernet
o4 x USB 2.0
oMicro SDcard socket
oWLAN
oBluetooth
•CAN, ISO/DIN 11898-2 (isolated from logic), jumper switchable 120 Ohm termination resistor
•Console, 9 pin DSUB
•Serial port, RS232 (4 wire) or RS485 (jumper selectable), jumper switchable 120 Ohm
termination resistor for RS485
•RTC with battery backup
•4 x digital OUT (0.5 A max.), 10..32V externally powered (isolated from logic)
•4 x digital IN (isolated from logic)
•
•

1 - 6 emPC-A/RPI3 (Hardware and Software Manual) •Introduction
© Janz Tec AG Rev. 1.3
1.2 Functional Overview
The processing core of the emPC-A/RPI3 is an unmodified Raspberry PI 3 B board. A Janz Tec
specific add-on board implements the specific features. Refer to figure 1 for the block diagram.
10/100
BaseT
USB 2.0
User LEDs
USB 2.0
USB 2.0
IIC
EE-
PROM
Temp.-
Sensor
Battery Power
(RTC Only)
USB 2.0
HDMI
Raspberry PI
RTC
RS232
Converter
main
DC/DC
5V, 2A
2.5A
VIN: 9..32 VDC
Isolator
Trans-
ceiver
DC
DC
RS485/
RS232
Transceiver
Isolator
UART CAN
Isolator
SPI
Console
GPIO
GPIO
26pin IO header
VIO: 10..32VDC
3A
High side
switches
4 x 0.5A
Isolation barrier Isolation barrier
GND-IO
4 4
micro
SD
eFuse
TPS2592AA
UVL:
9.1V ... 10.2 V rising
7.1 V ... 7.9V ... 8.8 V falling
(12% tolerance)
DO
DI
DC/DC
3.3V
GND
120 Ohm 120 Ohm
Mode
J400J300
J301
PE
1-
Wire
figure 1: emPC-A/RPI3 block diagram

emPC-A/RPI3 (Hardware and Software Manual) •Safety Instructions 2 - 7
Rev. 1.3 © Janz Tec AG
2 Safety Instructions
Refer to page iv for explanation of the warning notice system.
The product described in this documentation may be operated only by personnel qualified for the
specific task in accordance with the relevant documentation for the specific task, in particular its
warning notices and safety instructions. Qualified personnel are those who, based on their training and
experience, are capable of identifying risks and avoiding potential hazards when working with these
products.
2.1 Installation and Maintenance
DANGER: Electrical Shock
Danger to life.
This product operates with 9..32 V DC SELV power supply. Do not connect this product
to an improper power supply (No AC power, no more than 32 V DC/DC or no non-SELV
circuit)!
DANGER: Electrical Shock
Danger to life.
The IO interfaces (connectors) of the product are only suited to be connected to SELV
circuits. Use interfaces (connectors) for their intended use only.
CAUTION: Explosive Risk
The installed computer board is equipped with a Lithium battery.
Danger of explosion if battery is incorrectly replaced. Replace only with battery of the
same or equivalent type.
CAUTION: Fire Risk
The digital IO must be powered by a SELV power supply, that complies with the
requirements of a limited energy source (LPS) (By using an appropriate supply or an
external fuse).
WARNING: Burns Hazard
The product generates considerable amount of heat. The housing transports this heat to
the environment and therefore gets hot. Caution when touching the housing, burns
hazard!

2 - 8 emPC-A/RPI3 (Hardware and Software Manual) •Safety Instructions
© Janz Tec AG Rev. 1.3
2.2 Ambient and Environmental Conditions
CAUTION: Damage
Do not operate the product beyond the specified ambient conditions
DANGER: Explosive Risk
Do not operate the product in potentially explosive atmosphere.
NOTICE: EMI
This product is a class A device. This product may cause radio interference. In this case
the user must take adequate measures.
NOTICE: System overheating
The cooling concept of the emPC-A/RPI3 is not sufficient to allow full loading of the
Raspberry PI 3 Module processor without system overheating which leads to clock
reduction. Refer to the technical data for details.