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IEC 60730 Functional Safety for 8-bit MCUs in Household Appliances
IEC 60335 is the safety standard for household appliances and similar appliances with automatic electrical controls. IEC 60335 refers to the IEC 60730 standard for electronic controls of such appliances and IEC 60730 is currently mandatory for home appliances sold in Europe and other places around the world.
Annex H in IEC 60730-1, defines the safety requirements for electronic controls and Table H.1 (H.11.12.7 in edition 3) defines the acceptable measures to address faults and errors. This standard covers the safety levels referred to as Class B, which includes thermal cut-out functions, and Class C, which covers functions with higher risk of failure, such as automatic gas burner controls.
Uses for Functional Safety Ready PIC® and AVR® MCUs
You can use our PIC and AVR microcontrollers (MCUs) as User Interface (UI) controllers for mechanical and capacitive buttons in appliances. Our MCUs can also function as main controllers to safely measure temperature, pressure, current, particle density and many other sensory signals that control the operation of appliances. Parts of such systems are critical to safety and therefore, the operation of the safety features requires careful monitoring so that a fault will not expose the user to danger. In some appliances, you want to prevent the user from touching moving parts, such as spinning washing drums, while in other appliances, the danger can relate to over-pressure in a boiler/compressor, leakages of refrigerant gasses, microwave radiation or overheating of the product. Our affordable and easy-to-use MCUs are also popular as safety co-processors where the PIC or AVR MCU is placed next to a primary MCU/MPU to implement and monitor dedicated safety features or to add redundancy to reach a higher safety level, such as IEC 60730 Class C, which is relevant for flammable applications.
Supporting Collateral for Functional Safety Ready MCUs
Simplify the safety certification of your appliance safety designs using our IEC 60730 functional safety resources:
- UL-certified IEC 60730 Class B library
- Development ecosystem for functional safety applications with TÜV SÜD®-certified MPLAB® XC C compilers and a qualification package for the MPLAB ecosystem
Whether you are new to IEC 60730 functional safety or a seasoned expert, you can count on our proven experience and solutions to help you meet functional safety requirements while minimizing cost, risk and development time.
The IEC 60730 Class B library is a software library that contains all the diagnostic tests demanded by the IEC 60730 standard to submit your end product for Class B certification. The library is re-certified annually by UL and we distribute it as a software package for MPLAB® Code Configurator (MCC), a tool that makes it easy to configure the software modules for the device of your choice. The library is free to use with our PIC and AVR MCUs and we recommend using the library together with the safety-certified MPLAB XC8 compiler.
MCUs With IEC 60730 Functional Safety Libraries
You can find an overview of the available libraries and the corresponding certificates and documentation below. We continuously expand the functional safety collateral for PIC and AVR MCUs to meet demand; please contact one of our local sales offices if your preferred MCU product is not listed in the release notes of any of the packages.
We require you to register/login to your MyMicrochip account to download the IEC 60730 Class B libraries. If you have subscribed to our updates and news in your MyMicrochip account, we will send notifications when we release new versions of the Class B libraries.
- Active Libraries
- Archived Libraries
- Related Documents
Note:
- The library is available as optional content in MPLAB® Code Configurator Melody and can be enabled in the Content Manager Tool. Follow the steps outlined in the user guide to get started.
Notes:
- The library is available as optional content in MPLAB® Code Configurator Melody and can be enabled in the Content Manager Tool. Follow the steps outlined in the user guide to get started.
- The VDE test report is included in the zip file with the Class B library
Required Diagnostic Tests for IEC 60730 Class B Certification
Components Covered by the Class B Safety Software Library
Functional Safety Ecosystem
When you are designing functional safety applications, using development tools that meet the requirements of safety standards can make it easier for you to create compliant systems. To help you with implementing system-level functional safety in your applications, our MPLAB XC C compilers are TÜV SÜD-certified for several functional safety standards. We also provide the complete certification packages for our MPLAB development tools ecosystem to help you qualify your projects.
MPLAB X IDE
Organize, write, test and debug your embedded software applications in the MPLAB X IDE.
MPLAB XC Compiler
Build your embedded software with the TÜV SÜD-certified MPLAB XC32 Pro Functional Safety Compiler.
MPLAB Code Coverage
Verify and document your software test coverage with the MPLAB Code Coverage tool.
Achieving Class C Safety Level
For appliances where failures are associated with high risk, such as automated gas burner control applications, the IEC 60730 Class C safety level is likely to apply. The public and free Class B library does not cover all the diagnostic tests required for Class C safety levels. If your application requires Class C conformance, please get in touch with us for further assistance.
Please contact one of our local sales offices for additional information or our client success team who can assist you with sales, product inquiries and support on new designs.