Kunbus RevPi Core 3

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The heart of the revolution

RevPi Core 3 is the latest version of the RevPi Core, the base module of Revolution Pi. The quad-core RevPi Core 3 comes equipped with the Raspberry Pi Compute Module 3 for the ultimate in high performance for complex tasks such as image processing. RevPi Core 3 comes equipped with an adapted Raspbian Jessie with an RT patch. In addition to quadrupling the number of CPUs (Broadcom BCM2837), improvements to this latest version include 1 GB of RAM and 1.2 GHz clock rate. Like its predecessor, it has 4 GB of eMMC flash memory.

Consisting of open hardware and software, the [industrial PC] RevPi Core 3 meets the EN61131-2 standard and, because of its modular structure, can be enhanced with digital and analogue I/O modules as well as appropriate fieldbus gateways. Mounted in a DIN rail housing, the RevPi Core 3 has USB, ethernet and HDMI ports, and runs on the standard industrial 24-volt power supply.


Lastly, the RevPi Core 3 has Master and Slave capabilities for the two highly popular communication protocols Modbus TCP and Modbus RTU. Expensive external gateways are no longer required. The RevPi Core 3 is therefore an economical and logical choice for use as an industrial PC.

Review the RevPi Data Sheet.


approx. 115 g

Protection class


Power supply

min. 10.7 V - max. 28.8 V 1

Max. power consumption

10 Watt (incl. 2 x 450 mA USB load) 2

Operating temperature

-40 °C to +55 °C (exceeds EN61131-2 requirements) 3.

Storage temperature

-40 °C to +85 °C (exceeds EN61131-2 requirements)

Humidity (40°C)

up to 93% (non-condensing)


2 x USB 2.0 A (each can be charged with 500mA) | 1 x Micro-USB | 1 x Micro HDMI | 1 x RJ45 (Ethernet) 10/100 Mbit/s


BCM2837, 1.2 GHz, quad-core


1 GB


4 GB

Polarity protection


ESD protection

4 kV / 8 kV (according to EN61131-2 and IEC 61000-6-2)

EMI tests

Passed (according to EN61131-2 and IEC 61000-6-2)

Surge/Burst tests

Passed (according to EN61131-2 and IEC 61000-6-2 using power supply , Ethernet line und IO lines)

Buffer time RTC

min. 24 h

Optical indicator

Three status LEDs (bi-color), two of them freely programmable

Operating system

Raspian - version Jessie with RT-Patch