Ultra-Low Power PLCs with Minimal IO and Low Power Consumption

Question:

Are you familiar with ultra-low power PLCs? Finding a PLC or programmable RTU with minimal IO and low power consumption can be challenging. I am in need of a device with just a few digital inputs and one digital output, all operating on a 12vdc power supply drawing only 20-40mA or less. It doesn't necessarily have to be a traditional PLC, just something simple that can be programmed to activate an output for a short duration when an input signal changes.

Top Replies

I am aware of certain low-power IDEC PLCs that only consume a small amount of energy. However, for the specific series you mentioned, it is possible that you may need to consider microcontroller boards such as Arduino and other similar options.

Currently, the Idec device I am utilizing consumes 126mA of power.

A few years back, I was involved in a project that ran completely on solar power. The project utilized SCADAPak PLCs due to their minimal power consumption. I recommend looking into these efficient PLCs for similar projects.

The Mini SPS STG 600 from Barth Elektronik is a versatile product that operates efficiently with a voltage range of 7V to 32V. According to the specifications, it consumes less than 4mA at 32Vdc, although its performance at 12Vdc is uncertain.

If you're looking for options to meet your specific needs, I recommend checking out Arduino for innovative solutions. For more information on the topic, consider reading this intriguing article: "Powering an ATmega328P for a Year on a Coin Cell Battery" at the Home Automation Community website.

Hey there! I totally understand the struggle of finding ultra-low power PLCs or RTUs that meet such specific criteria. Have you looked into microcontroller-based solutions? Devices like the Arduino Pro Mini or the Raspberry Pi Pico can be great for low power applications; you can program them easily to handle simple input-output operations and keep power consumption around that 20-40mA range. Plus, they’re quite flexible and can be powered by a 12vdc supply with the right voltage regulator. Just a thought!

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Frequently Asked Questions (FAQ)

FAQ: 1. What are ultra-low power PLCs and why are they important?

Answer: - Ultra-low power PLCs are programmable logic controllers designed to operate on minimal power consumption levels. They are important for applications where energy efficiency and power conservation are critical, such as in remote locations or battery-operated systems.

FAQ: 2. Can you recommend a PLC or RTU with minimal IO and low power consumption?

Answer: - While there are several options available in the market, one potential solution could be to explore micro PLCs or compact programmable controllers that are designed for low power operation and minimal IO requirements.

FAQ: 3. What are the typical specifications for a device with minimal IO and low power consumption?

Answer: - A device with minimal IO and low power consumption would typically have a small number of digital inputs and outputs, operate on a low voltage supply (e.g., 12vdc), and draw a very low current (e.g., 20-40mA or less).

FAQ: 4. Is it necessary for a device to be a traditional PLC to meet these requirements?

Answer: - Not necessarily. There are simple programmable devices available in the market that can meet the specified criteria of minimal IO, low power consumption, and programmable functionality for activating outputs based on input signals.

FAQ: 5. How can I program a device to activate an output for a short duration when an input signal changes?

Answer: - Depending on the device chosen, programming can be done using specific software tools provided by the manufacturer. The programming logic

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