Automation systems are deployed today across a wide range of settings and applications, encompassing factories, manufacturing plants, and robotics.
These systems, however, depend on robust and high-performance connectors to ensure reliable communication, power distribution, and signal transmission.
The Importance of Suitable Connectors
Whether you’re designing a production line, upgrading industrial controls, or maintaining factory equipment, when it comes to applications like these, it will be crucial to select connectors that stand up to vibration, dust, moisture, temperature extremes, and frequent mating cycles. This, in turn, will help ensure the highest levels of safety and uptime.
From compact M8 sensor connectors to rugged heavy-duty power connectors, there are all manner of available types of connector products from RS Online. However, to make the right choice for your own project, you must be mindful of the different purposes that different connector types serve within industrial environments.
In light of this, we have below set out five of the most common connector types used in industrial automation. Along the way, we have explained these components’ usual applications and other vital considerations.
- M12 Connectors
Few components are as widely used in modern automation systems as M12 connectors. These circular connectors are designed to withstand harsh conditions, and are frequently used with sensors, actuators, industrial Ethernet, and fieldbus systems.
The threaded locking mechanism of M12 connectors allows them to provide excellent vibration resistance. This helps make them a great choice for manufacturing plants, robotics, and conveyor systems.
- M8 Connectors
If your intended application provides limited installation space, you might turn to these smaller circular connectors rather than the M12 equivalents. M8 connectors have an 8mm thread, compared to the 12mm thread of M12 connectors. They typically feature three to eight pins, whereas M12 connectors can have as many as 12 pins or more.
M8 connectors are similar to their M12 counterparts in the functions that they perform. However, their relatively compact size makes them particularly relevant for use in modern smart manufacturing systems, where equipment density is on the up.
- RJ45 Industrial Ethernet Connectors
Ethernet is no less than the backbone of Industry 4.0 and smart factory environments. It shouldn’t be surprising, then, that RJ45 connectors are a trusted solution for Ethernet-based communication protocols such as PROFINET, EtherNet/IP, and Modbus TCP.
Standard RJ45 connectors see widespread use in milder environments or inside cabinets. When it comes to factories, however, ruggedised versions or M12 Ethernet variants are preferred.
- Heavy-Duty Rectangular Connectors
For high-power industrial applications necessitating quick connection and durability, heavy-duty rectangular connectors are often chosen.
Thanks to their modular design, these connectors give engineers a means of combining power, signal, and data contacts within a single connector housing. This, in turn, helps minimise wiring complexity, in addition to simplifying maintenance.
They’re commonly used across the likes of motor connections, industrial machinery, power distribution systems, and automated manufacturing equipment.
- Terminal Blocks and DIN Rail Connectors
Terminal blocks are of fundamental importance in control cabinets and automation panels. Mounted on DIN rails, they provide secure and organised wiring connections for power and control circuits.
DIN rail terminal blocks are straightforward to install and maintain, in addition to providing a reliable electrical contact. Depending on the application requirements, both spring-clamp and screw-terminal variants are frequently used.
Final Thoughts: Selecting The Right Connector Type Is Imperative
These electromechanical devices may not be the most obviously talked-about elements of automation systems. However, this doesn’t stop them being hugely important from an efficiency and reliability perspective.
Such awareness will help put you in a strong position to choose the most suitable connector type for your automation project.
After all, amid the continued adoption of smart manufacturing technologies and Industry 4.0 practices, it is clear that robust, high-speed, and environmentally protected connectors will remain in demand for automation applications over many years to come.