Chipsee EPC-CM4-050 User manual

Industrial PC
EPC/PPC-CM4-050
PN: CS12720RA4050
Content can change at anytime, check documentation website for latest information.
www.chipsee.com

Contents
3EPC/PPC-CM4-050
71. Product Overview
72. Ordering Options
82.1. Pi CM4 Module
82.2. Operating System
83. Specications
94. Power Input
105. Touch Screen
116. Connectivity
116.1. RS232/RS485/CAN
136.2. USB Connectors
146.3. LAN Connectors
146.4. WiFi & BT Module
156.5. Camera Connector
167. TF Card Slot
168. Audio Connectors
179. Boot DIP Switch
1810. Mounting Procedure
1810.1. CS12720RA4050E
1810.2. CS12720RA4050P
1911. Mechanical Specications
1911.1. CS12720RA4050E
1911.2. CS12720RA4050P
1912. 3D Model
2013. Disclaimer
2014. Technical Support
®
Chipsee IPC Page 2 of 20

EPC/PPC-CM4-050
Front View
EPC/PPC-CM4-050
Chipsee IPC Page 3 of 20

Rear View
EPC/PPC-CM4-050
Chipsee IPC Page 4 of 20

Front View (Embedded Variant)
EPC/PPC-CM4-050
Chipsee IPC Page 5 of 20

Rear View (Embedded Variant)
EPC/PPC-CM4-050
Chipsee IPC Page 6 of 20

Product Overview
The Cortex -A72 Raspberry Pi series EPC/PPC-CM4-050 (PN: CS12720RA4050) is a high-
quality industrial Pi PC. It features a 5” ve-point capacitive touch screen with a resolution of
1280 x 720 pixels and brightness of 400 cd/m .
Key Applications
Human Machine Interface HMI
Process Control
Process Monitoring
HMI
IIoT node
Environmental Monitoring
PLC
Automotive applications
ATM…
It is available both as an embedded solution and as a device hosed in a casing with bezels,
thus facilitating dierent installation options:
Installation on an industrial cabinet
Integration with the existing equipment
The EPC/PPC-CM4-050 industrial Pi PC is based around the powerful Raspberry Pi
Compute Module 4, powered by the Quad Cortex -A72 processor with a processor speed of
1.5GHz.
Ordering Options
Chipsee products can be customized during the ordering process. The product will be
shipped with the pre-installed factory defaults if no extra requirements are specied. The
table in the Specications section provides information about the default options bundled
with the product.
® ®
2
•
•
•
•
•
•
•
•
•
•
•
®
®
Note
You can order EPC/PPC-CM4-050 from the ocial Chipsee Store or from your nearest distributor.

EPC/PPC-CM4-050 Product Overview
Chipsee IPC Page 7 of 20

Pi CM4 Module
The Pi Compute Module 4 appears in dierent versions depending on the size of the DDR4
and eMMC.
The EPC/PPC-CM4-050 industrial Pi PC does not include the CM4 Raspberry Pi module by
default. If you would like to purchase it with a CM4, you can select it at the Chipsee store
during the ordering process.
Operating System
This product comes with a pre-installed Debian OS. Chipsee software engineers have
created all the drivers, so every hardware feature is readily available for any standard
development tool.
If your project requires a dierent OS, please Contact us, and we’ll make a customized
version that suits your needs.
Specifications
The EPC/PPC-CM4-050 industrial Pi PC oers a broad range of performance and connectivity
options for scalable integration, providing expandability according to future needs. Some of
the key features are listed in the table below.
®
®
®
EPC/PPC-CM4-050
CPU Raspberry Pi CM4, CM4 Lite; Quad Cortex-A72 at 1.5GHz
Storage 1 TF Cards slots3
RAM Based on CM4
eMMC Based on CM4
Display 5” IPS LCD, 1280 x 720 resolution px, brightness 400 cd/m
Touch 5-point capacitive touch with 1mm Armored Glass
USB 2 x USB 2.0 Host, 1 x Type-C
LAN 1 x Channel Giga LAN
Audio 3.5mm Audio Out Connector, 2W Speaker Internal
Buzzer Onboard Buzzer, driven by GPIO
RTC Yes, High Accuracy RTC with Lithium Button Coin battery (lithium battery not
included)
RS232 2 x RS232
RS485 2 x RS4851
CAN 1 x CAN-BUS
GPIO Not Supported
®
2
EPC/PPC-CM4-050 Pi® CM4 Module
Chipsee IPC Page 8 of 20

1
2
3
The RS485 circuit controls the Input and Output direction automatically, there’s no need to control it from
within the software.
The default product without the CM4 does not include a Wi-Fi/BT module. You can include a CM4 that has the
Wi-Fi/BT module at the Chipsee store during the ordering process.
Chipsee designed TF card slots for storage expansion, as the TF card for storage expansion use same pins with
WiFi, it can’t be used with WiFi at same time
Power Input
The EPC/PPC-CM4-050 industrial Pi PC can be powered by a wide range of input voltages:
From 9V to 36V DC. It is a 3 Pin, 3.81mm screw terminal connector. The polarity and the
pinout is clearly marked on the housing of the CS12720RA4050P version, as shown in the
gures below.
EPC/PPC-CM4-050
WiFi/BT Supported but depending on the CM4 selected2
HDMI Not Supported
3G/4G/LTE Not Supported
I2C Support I2C0 I2C1 for CS12720RA4050E
Camera Yes, not mounted by default
Power Input From 9V to 36V
Current at 12V 500mA Max
Power Consumption 6W Typical
Working
Temperature From 0°C to +60°C
OS Debian
Dimensions
CS12720RA4050E: 141.2 x 77.6 x 25.8mm
CS12720RA4050P: 139 x 85 x 28mm
Weight
CS12720RA4050E: 200g
CS12720RA4050P: 310g
Table 332 Key Features
Attention
Chipsee does not install a lithium battery by default, as we cannot ship products with batteries. We recommend you
buy it locally and install it by yourself. The lithium battery part number is CR1220. Please Contact us if you need help.

EPC/PPC-CM4-050 Power Input
Chipsee IPC Page 9 of 20

Figure 966: Power Input
Note that the “+” sign represents the positive power input, and it is printed both at the
casing and as a silk-screen on the board of the embedded version. The “-” terminal is
shorted to the ground.
Touch Screen
The EPC/PPC-CM4-050 industrial Pi PC uses a 5-point capacitive touch screen. However, the
Debian OS supports only One-Point touch.
The gure below shows the capacitive touch screen connected to the motherboard via the
FPC connector.
Power Input Denition
Pin Number Denition Description
Pin 1 Positive Input DC Power Positive Terminal
Pin 2 Negative Input DC Power Negative Terminal
Pin 3 Ground Power System Ground
Table 333 Power Connector
Note
The system ground “G” is connected to power negative “-” on board.
The central pin is positive.

EPC/PPC-CM4-050 Touch Screen
Chipsee IPC Page 10 of 20

Capacitive Touch Connector
Connectivity
There are many connectivity options available on the EPC/PPC-CM4-050 industrial Pi PC. It
has 2 x USB 2.0 Host, 1 x Type-C, 1 x Channel Giga LAN (RJ45) Ethernet connector supporting
up to 1 Gbps, and 4 x UART terminals (RS232/RS485/CAN).
RS232/RS485/CAN
The serial communication interfaces (RS485, RS232, and CAN) are routed to a 12-pin
3.81mm terminal, as illustrated on the gure below.
Attention
A capacitive touch screen is susceptible to power noise and Electromagnetic Radiation (EMR). It may cause LCD ripples
or even capacitive touch malfunction. If using a capacitive multi-touch test application, you might notice the touch
points oat erratically across the display. There are several solutions to this problem:
Use a high-quality Power Adapter Unit (PSU) with low EMR. You can also provide power from a battery.
Make sure that the EPC/PPC-CM4-050 Power Input connector (pin 3) is properly connected to the Power System
Ground to provide sucient EMI shielding and eliminate the problem entirely.
Bad GND problems can also be conrmed by touching pin 3 of the Power Input connector with one hand while
operating the capacitive touch screen with the other hand. In this case, the operator’s body acts as the Power
System Ground.

1.
2.
3.
EPC/PPC-CM4-050 Connectivity
Chipsee IPC Page 11 of 20

Figure 967: Relation between serial pins on embedded vs. enclosed version of the EPC/PPC-CM4-050
Industrial PC
The table below oers more detailed description of every pin and its denition:
RS232 / RS485 / CAN Pin Denition:
Pin Number Denition Description
Pin 12 CAN1_H CAN H signal
Pin 11 CAN1_L CAN L signal
Pin 10 RS485_5- CPU UART5, RS485 –(B) signal
Pin 9 RS485_5+ CPU UART5, RS485 +(A) signal
Pin 8 RS485_3- CPU UART3, RS485 –(B) signal
Pin 7 RS485_3+ CPU UART3, RS485 +(A) signal
Pin 6 RS232_2_RXD CPU UART2, RS232 RXD signal
Pin 5 RS232_2_TXD CPU UART2, RS232 TXD signal
Pin 4 RS232_0_RXD CPU UART0, RS232 RXD signal
Pin 3 RS232_0_TXD CPU UART0, RS232 TXD signal
Pin 2 GND System Ground
Pin 1 +5V System +5V Power Output, No more than 1A Current output
Table 334 Connectivity Section
EPC/PPC-CM4-050 RS232/RS485/CAN
Chipsee IPC Page 12 of 20

USB Connectors
There are 2 x Type A USB HOST connectors onboard, as shown on the gure below.
Figure 968: USB HOST Connectors (embedded/enclosed PC version)
The product has one USB Type-C connector that works as a slave by default. You can use it
to establish a connection with the host PC and for downloading the system to the eMMC of
CM4 module.
Attention
RS485_3 and RS485_5 can control the input and output direction automatically. There’s no need to control it from
within the software.
The 120Ω match resistor for the RS485 and CAN bus is NOT mounted by default.

1.
2.
Attention
These two USB host connectors can drive 500mA for each channel at most.
When you connect this product to the HOST PC by a USB Type-C cable, the USB HUB will be disabled. As a result,
the 2 USB host connectors will not work.

1.
2.
EPC/PPC-CM4-050 USB Connectors
Chipsee IPC Page 13 of 20

Figure 969: USB OTG Connector
LAN Connectors
LAN (RJ45) connector provides Ethernet connectivity over standardized Ethernet cables as
shown in the gure below. The integrated Ethernet interface supports up to 1 Gbps data
throughput. These Giga LAN signals come from the CM4 module directly.
Figure 970: RJ45 LAN Connectors (embedded/enclosed PC version)
WiFi & BT Module
The default EPC/PPC-CM4-050 without the CM4 does not include a Wi-Fi/BT module.
If you include a CM4 that has the Wi-Fi/BT module, the product will have Wi-Fi/BT feature.
The enclosed (CS12720RA4050P) variant of the product also includes an SMA connector for
an external WiFi/BT antenna, as illustrated in the gure below.
Warning
Be careful not to touch surrounding electronic components accidentally while plugging in USB devices into the
embedded Industrial PC version.

Note
Use CAT5 or better cables to achieve full data throughput over maximum distance dened by the 1000BASE-T
standard (100m).

EPC/PPC-CM4-050 LAN Connectors
Chipsee IPC Page 14 of 20

WiFi+BT Antenna
Camera Connector
The EPC/PPC-CM4-050 industrial Pi PC has a 15 Pin Camera Connector, as shown on the
gure below. The camera signals come from CAM1. The table below gives details about the
denition of every Pin.
Figure 971: Camera Connector
Attention
The product does not come shipped with the Wi-Fi/BT module by default.

Camera Connector Pin Denition:
Pin Number Denition Description
Pin 1 GND Power Ground
Pin 2 CAM1_DN0 CAM1_DN0
Pin 3 CAM1_DP0 CAM1_DP0
Pin 4 GND Power Ground
Pin 5 CAM1_DN1 CAM1_DN1
Pin 6 CAM1_DP1 CAM1_DP1
EPC/PPC-CM4-050 Camera Connector
Chipsee IPC Page 15 of 20

TF Card Slot
The EPC/PPC-CM4-050 industrial Pi PC features 1 x TF Card (micro SD) slot: SD, TF slots can
address up to 128GB of memory.
Figure 972: TF (micro SD) Card Slot
Audio Connectors
The EPC/PPC-CM4-050 industrial Pi PC features some audio peripherals. It has 1 x 3.5mm
audio output jack.
Also, the EPC/PPC-CM4-050 industrial Pi PC has a miniature 2W internal speaker for audio
reproduction, as well as a small buzzer for alarm/notication sounds.
Camera Connector Pin Denition:
Pin 7 GND Power Ground
Pin 8 CAM1_CN CAM1 Clock signal Negative
Pin 9 CAM1_CP CAM1 Clock signal Positive
Pin 10 GND Power Ground
Pin 11 CAM GPIO CAM GPIO, use for disable camera power and module
Pin 12 NC Not connected
Pin 13 SCL0 CPU I2C SCL0 signal
Pin 14 SDA0 CPU I2C SDA0 signal
Pin 15 +3.3V System +3.3V Power Output, No more than 500mA Current output
Table 335 Camera Connector Pin-out
Attention
The camera is not mounted by default.

1.
Attention
The SD is used for memory extension. It can’t be used for system boot-up.
The product does not come shipped with the TF Card by default.

1.
2.
EPC/PPC-CM4-050 TF Card Slot
Chipsee IPC Page 16 of 20

Figure 973: Audio Connector (embedded/enclosed PC version)
Boot DIP Switch
The EPC/PPC-CM4-050 industrial Pi PC has one button on the board marked as SW1, shown
in the gure below.
When button is pressed before power, the Raspberry Pi will boot from the USB connector.
You can use this function to download the OS software to the internal eMMC.
When button is released before power, the Raspberry Pi will boot from internal eMMC.
There is no need to press the button during regular operation. However, if you need to
reinstall the OS, please refer to the detailed information on how to re-ash the OS from the
Software Documentation.
Figure 974: Boot DIP Switch
Attention
By plugging in the headphone cable, the internal speaker will be disabled automatically.

EPC/PPC-CM4-050 Boot DIP Switch
Chipsee IPC Page 17 of 20

Mounting Procedure
The EPC/PPC-CM4-050 industrial Pi PC can be mounted with 4 x M4 screws, enabling
simplied installation onto any standard mounting xture.
CS12720RA4050E
You can mount CS12720RA4050E with the Embedded mounting method, as shown on the
gure below.
Figure 975: Embedded mounting
CS12720RA4050P
You can mount CS12720RA4050P with the Vesa (75 x 75mm) and Panel mounting methods,
as shown on the gure below.
Figure 976: Panel mounting
You can nd detailed information about mounting in the Mount IPC Guide.
Attention
Please make sure the display is not exposed to high pressure when mounting into an enclosure.

EPC/PPC-CM4-050 Mounting Procedure
Chipsee IPC Page 18 of 20

Mechanical Specifications
CS12720RA4050E
The outer mechanical dimensions of CS12720RA4050E are 141.2 x 77.6 x 25.8mm (W x L x
H). Please refer to the technical drawing in the gure below for details related to the specic
product measurements.
Figure 977: CS12720RA4050E Technical Drawing
CS12720RA4050P
For CS12720RA4050P, the outer mechanical dimensions are 139 x 85 x 28mm (W x L x H).
3D Model
EPC/PPC-CM4-050 3D model can be viewed in the online doc in a web browser, if you are
reading from the PDF version, please visit the online doc.
EPC/PPC-CM4-050 Mechanical Specications
Chipsee IPC Page 19 of 20

Disclaimer
This document is provided strictly for informational purposes. Its contents are
subject to change without notice. Chipsee assumes no responsibility for any errors
that may occur in this document. Furthermore, Chipsee reserves the right to alter the
hardware, software, and/or specications set forth herein at any time without prior
notice and undertakes no obligation to update the information contained in this
document.
While every eort has been made to ensure the accuracy of the information
contained herein, this document is not guaranteed to be error-free. Further, it does
not oer any warranties or conditions, whether expressed orally or implied in law,
including implied warranties and conditions of merchantability or tness for a
particular purpose. We specically disclaim any liability with respect to this
document, and no contractual obligations are formed either directly or indirectly by
this document.
Despite our best eorts to maintain the accuracy of the information in this
document, we assume no responsibility for errors or omissions, nor for damages
resulting from the use of the information herein. Please note that Chipsee products
are not authorized for use as critical components in life support devices or systems.
Technical Support
If you encounter any diculties or have questions related to this document, we encourage
you to refer to our other documentation for potential solutions. If you cannot nd the
solution you’re looking for, feel free to contact us. Please email Chipsee Technical Support at
[email protected], providing all relevant information. We value your queries and
suggestions and are committed to providing you with the assistance you require.
EPC/PPC-CM4-050 Disclaimer
Chipsee IPC Page 20 of 20