How to Mount DIN Rail Computers
What is DIN rail mounting?
DIN rails derive their name from the German term for the German Institute of Standards, which introduced this rail-mounting system in the late 1920s. Although there are various types of DIN rails, they share common features globally, making them an excellent option for mounting various electrical devices. Due to their practicality, these DIN standards were subsequently embraced by the International Electrotechnical Commission (IEC) and were designated as IEC/EN 60715.
The specific equipment you aim to install, such as a DIN Computer and the rails you employ will likely result in some variations. When considering DIN rail measurements, there may be some differences in form, but the most frequently used DIN rail, which is commonly known as a top-hat DIN rail, has a width of 35mm and is available in depths of 7.5mm and 15mm. Embedded systems with DIN rail mounting options provided by Things Embedded are compatible with both depths.
Example of an industrial computer with a DIN clip installed for mounting inside a cabinet or enclosure.
Step-by-Step Guide to Installing a DIN Rail PC
By following these steps, you can successfully install a DIN rail PC in an industrial control cabinet or outdoor enclosure, ensuring reliable operation in harsh environments.
Choose the Installation Location: Select an appropriate location inside your control cabinet or outdoor enclosure where the DIN rail is already mounted or can be installed. Ensure the chosen area has enough space for airflow around the PC and easy access to power and data cables. We recommend that you always consult the manufacturer’s manual for specific mounting instructions, power requirements, and recommended clearances.
Mount the DIN Rail: If a DIN rail is not already installed, mount a standard 35mm DIN rail horizontally or vertically on the panel or surface where the PC will be installed. Use screws or bolts appropriate for the material of the panel and ensure the rail is securely fixed to prevent any movement or vibration.
Prepare the DIN Rail PC: Before mounting, make sure the DIN clips or brackets are securely attached to the PC. Some DIN rail PCs come with spring-loaded clips or sliding brackets designed to snap onto the rail.
Attach the DIN Rail PC to the Rail: Align the mounting clips or brackets on the back of the PC with the DIN rail. Follow by hooking the top of the mounting clip over the top edge of the DIN rail. Press down firmly until the bottom of the clip snaps into place on the rail. You should hear or feel a click, indicating that the PC is securely attached. Ensure the DIN computer is stable and securely mounted by gently pulling it. It should not move or come off the rail if mounted correctly.
Connect Power Supply: Locate the power input on the DIN rail PC, typically a DC terminal block or barrel connector. Connect the power cable to the power source, usually a power supply unit (PSU) mounted inside the control cabinet or enclosure. Make sure the power supply provides the correct voltage and amperage as specified by the DIN rail PC’s manufacturer (commonly 12V, 24V, or 48V DC). Securely attach the power cable to the power input on the PC, ensuring a tight connection to prevent power loss or fluctuations.
Connect Data and Peripheral Cables: Identify the data and communication ports on the DIN rail PC, such as Ethernet ports, serial ports (RS232/RS485), USB ports, and other I/O interfaces. Connect the necessary data and peripheral cables to the PC, such as Ethernet cables for network connectivity, USB cables for peripherals like keyboards and mice, and serial cables for communication with sensors, controllers, or other industrial equipment. Use cable ties or clips to organize and secure cables to prevent them from becoming loose or damaged.
Ground the DIN Rail PC: Ensure the DIN rail PC is properly grounded to avoid electrical noise and static discharge, which could damage the device or connected equipment. Most DIN rail PCs have a grounding terminal, usually a screw or terminal block. Connect the grounding terminal to the ground bus bar or grounding point inside the control cabinet or enclosure using an appropriate grounding wire.
Check Cooling and Ventilation: Verify that the DIN rail PC is positioned to allow adequate airflow for cooling. If it is a fanless DIN PC, ensure it is not obstructed by other devices or walls. Maintain a minimum clearance around the PC, as specified by the manufacturer, to ensure proper heat dissipation.
Power On and Test the PC: Once all connections are secure, switch on the power supply to the DIN rail PC. Monitor the PC as it powers on, checking for normal operation indicators such as LED status lights, fan activity (if applicable), and any boot-up messages on a connected display. Test the functionality of all connected peripherals, data connections, and ensure the PC communicates correctly with other devices in the network or control system.
Secure and Monitor the Installation: Double-check all connections and mounting to ensure nothing is loose or improperly installed. Regularly monitor the DIN rail PC for any signs of overheating, loose connections, or other issues, especially after the initial installation period.
Why DIN Rail Computers are Popular for Industrial Control Cabinets and Outdoor Enclosures
DIN rail computers are specifically designed for harsh environments, making them popular choices for industrial control cabinets and outdoor enclosures. Their rugged construction, compact form factor, and ability to withstand extreme conditions such as temperature fluctuations, dust, moisture, vibrations, and electrical interference make them ideal for edge computing in challenging settings.
Rugged Design: DIN rail computers are built to endure harsh conditions commonly found in industrial and outdoor environments. They often have fanless designs, which minimize dust and debris ingress, and are constructed with durable materials that resist shock and vibration. This makes them well-suited for environments with high mechanical stress, such as manufacturing plants or along roadsides.
Compact and Modular Form Factor: Their small size and standardized DIN rail mounting make them easy to install in tight spaces, such as industrial control cabinets or outdoor enclosures. This modularity is crucial for environments where space is limited, and flexibility is needed for future expansion or reconfiguration.
Wide Operating Temperature Range: DIN rail computers are designed to operate over a broad temperature range, typically from -40°C to 70°C (-40°F to 158°F), ensuring they function reliably in extreme hot or cold outdoor conditions or in factories with high temperatures.
Enhanced Connectivity and I/O Options: These computers offer multiple connectivity options, including serial ports, Ethernet, USB, and wireless communication, allowing them to interface seamlessly with sensors, actuators, and other control equipment. This versatility makes them highly adaptable to different applications, whether in a factory setting or within a smart city infrastructure.
