Smarter and smaller
Industrial sensors, programmable logic controllers (PLCs), and other essential automated factory components are shrinking while, at the same time, providing increased functionality. They must be able to operate reliably over extended periods of time in harsh environments, where electrostatic discharge (ESD), electromagnetic interference (EMI), radio frequency interference (RFI), and high-amplitude transient pulses are prevalent. Also, these tiny devices must be powered efficiently with minimum heat and power dissipation.
Sensors collect voluminous amounts of data from the factory environment, processing it in real time to enable the actions that support adaptive manufacturing. They must, however, fit inside narrow assemblies or be integrated into tiny valves and actuators. IO-Link technology is making sensors smarter by enabling factory personnel to change their settings remotely based on real-time feedback on the health and status of other sensors on the line. As for PLCs, with their shrinking footprint, these controllers are being placed closer to the edge of the manufacturing floor, directing the flow of activity.
Saving power and space
In the industrial communications space, advanced industrial automation technologies must support a continued commitment toward footprint reduction, power savings, and flexibility. Key components for these systems include:
- Isolation ICs which provide complete galvanic isolation between two power domains. Maxim’s digital signal isolators, for example, provide up to 5kV of isolation and support data rates up to 150Mbps, while reducing power requirements and using less board space than, say, optocouplers.
- Digital I/O and analog I/O solutions that are small, efficient, and feature safe demagnetization. Digital I/O solutions transmit and receive high-voltage binary signals between a central controller and an industrial sensor or actuator. Analog I/O solutions convert analog signals sent to and received from remote sensors and actuators into the digital domain so that the signals can be processed by the digital controller.
- IO-Link transceivers and binary drivers that are low power, come in small WLP packages, and feature on-board diagnostics. Maxim’s IO-Link transceivers, for instance, act as the PHY interface to a microcontroller running the data-link layer protocol while supporting up to 24V digital inputs and outputs. The company’s binary drivers, which support high-side, low-side, or push-pull configurations along with normally open or normally closed logic, integrate transient protection that meets IEC 60255-5 surges up to ±1.3kV and OTP programming options to set 3.3V or 5V outputs.
- Robust communications solutions that offer high data rates in compact sizes
Over the years, Maxim has also created new pathways to Industry 4.0. Our demonstration platforms allow designers to quickly prototype and create industrial control solutions. Unveiled in 2014, our micro-PLC demonstration platform consisted of a first-generation industrial control chipset that reduced the PLC footprint by 10x while dissipating 50% less power. This platform supported the movement of decision-making and control closer to the edge of the manufacturing line. Two years later, our Pocket IO PLC demonstration platform highlighted the possibilities of adaptive manufacturing in a form factor of less than 10 cubic inches, while enabling factory control via an iPad.
So, what’s coming up? I can simply say now that our next industrial IoT platform will continue the momentum of enabling designers to further advance the promise of industrial convergence.
About the author:
Jeff DeAngelis is Managing Director, Industrial Communications at Maxim Integrated - www.maximintegrated.com