Can Schneider PLC be used in a hazardous environment?
As a supplier of Schneider PLCs, I often get asked whether these programmable logic controllers (PLCs) can be used in hazardous environments. The short answer is yes, but there are several important factors to consider.
Understanding Hazardous Environments
Hazardous environments are those where there is a risk of explosion, fire, or other dangerous conditions due to the presence of flammable gases, vapors, dusts, or fibers. These environments can be found in various industries such as oil and gas, chemical processing, mining, and food and beverage production.
In order to ensure the safety of personnel and equipment in these environments, strict regulations and standards have been established. These standards define the requirements for electrical equipment used in hazardous areas, including PLCs.
Schneider PLCs and Hazardous Environments
Schneider Electric offers a range of PLCs that are designed to meet the requirements of hazardous environments. These PLCs are certified to various international standards, such as ATEX, IECEx, and UL, which ensure their safety and reliability in explosive atmospheres.
One of the key features of Schneider PLCs for hazardous environments is their intrinsic safety. Intrinsic safety is a method of protection that limits the energy available in an electrical circuit to a level that is insufficient to cause an explosion. Schneider PLCs are designed with intrinsically safe circuits, which means they can be used in areas where there is a risk of explosion without the need for additional protective measures.
Another important feature of Schneider PLCs for hazardous environments is their ruggedness and durability. These PLCs are built to withstand harsh conditions, such as extreme temperatures, humidity, and vibration. They are also resistant to corrosion and dust, which makes them suitable for use in a wide range of industrial applications.
Examples of Schneider PLCs for Hazardous Environments
Schneider Electric offers a variety of PLCs that are suitable for use in hazardous environments. Here are some examples:
- Schneider Electric TM3TI4 Analog Input Module: This module is designed for use in hazardous areas and provides four analog input channels. It is certified to ATEX and IECEx standards and is suitable for use in Zone 1 and Zone 2 explosive atmospheres. Schneider Electric TM3TI4 Analog Input Module
- BMXAMI0810 Schneider Electric: This module is a high-performance analog input module that is suitable for use in hazardous environments. It provides eight analog input channels and is certified to ATEX and IECEx standards. It is suitable for use in Zone 1 and Zone 2 explosive atmospheres. BMXAMI0810 Schneider Electric
- TM221M32TK Schneider Electric: This is a compact and powerful PLC that is suitable for use in hazardous environments. It has 32 I/O points and is certified to ATEX and IECEx standards. It is suitable for use in Zone 1 and Zone 2 explosive atmospheres. TM221M32TK Schneider Electric
Considerations for Using Schneider PLCs in Hazardous Environments
While Schneider PLCs are designed to be used in hazardous environments, there are still some important considerations to keep in mind:
- Certification: Make sure that the PLC you choose is certified to the appropriate standards for the hazardous area where it will be used. This will ensure that it meets the safety requirements and is suitable for the specific application.
- Installation: Proper installation is crucial for the safe operation of PLCs in hazardous environments. Make sure that the PLC is installed in accordance with the manufacturer's instructions and the relevant safety standards. This may include using appropriate enclosures, cable glands, and grounding techniques.
- Maintenance: Regular maintenance is essential to ensure the continued safe and reliable operation of PLCs in hazardous environments. Make sure that the PLC is inspected and maintained on a regular basis, and that any faults or issues are addressed promptly.
- Training: Operators and maintenance personnel should receive appropriate training on the safe use and maintenance of PLCs in hazardous environments. This will help to ensure that they understand the risks and know how to operate the equipment safely.
Conclusion
In conclusion, Schneider PLCs can be used in hazardous environments, thanks to their intrinsic safety, ruggedness, and durability. Schneider Electric offers a range of PLCs that are certified to the appropriate standards for use in explosive atmospheres, and these PLCs are suitable for a wide range of industrial applications.


However, it is important to choose the right PLC for the specific hazardous area and application, and to ensure that it is installed, maintained, and operated in accordance with the relevant safety standards. By following these guidelines, you can ensure the safety of personnel and equipment in hazardous environments, and achieve reliable and efficient operation of your industrial processes.
If you are interested in using Schneider PLCs in a hazardous environment, or if you have any questions about our products, please contact us to discuss your requirements. We have a team of experts who can provide you with the information and support you need to make the right choice for your application.
References
- ATEX Directive 2014/34/EU
- IECEx System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres
- UL Standards for Safety
