Як вибрати виробника реле безпеки: контрольний список відповідності SIL та PL 

Safety relays are electrical devices designed to ensure the safety and reliability of your industrial systems. In other words, this equipment takes charge of monitoring certain functions. The moment it detects errors, it initiates a controlled shutdown or other pre-determined safety action to prevent damage to the tools and workplace injuries.

More often than not, you will be sourcing these relays from a professional низьковольтні electrical manufacturer, such as this company, TOSUN Electric, with this equipment in the catalog. But, how do you select the best safety relay manufacturers? Find out in this guideline that will tackle the following steps:

– Risk evaluations

– Safety function identification

– Safety relay selection

– Configurations and wiring

– Validation and testing

Plus, you will also learn about the SIL and PL compliance checklist. Let’s begin. 

Step-by-Step Guide to Selecting a Safety Relay Manufacturer

1. Conduct a Risk Evaluation

These assessments are the foundation when selecting the best industrial safety relay. Find protection relay manufacturers that use the toughest safety standards in the industry, considering the severity of potential injuries, frequency and duration of exposure, and the possibility of avoiding the hazard.

2. Identify the Safety Functions

As soon as you’re done conducting a risk evaluation, it is time to identify the safety function. These safety function sets include:

• Аварійна зупинка
• Safety gate monitoring
• Two-hand control
• Light curtain or laser scanner tracking
• Safe speed monitoring 

These should be determined so you know which operations must be controlled or stopped during issues along the way. Remember that each function may require a certain kind of safety relay device.

3. Select the Right Safety Relay

Third is actually shopping for that safety relay equipment. The following factors must be considered:

• PLr compliance
• Input types
• Number of channels
• Reset mode
• Час відгуку
• Diagnostic features
• Expandability

Simply refer to the checklist above to find the right safety relay for your needs. TOSUN Electric’s safety relay catalog consists of a three-phase relay, the main product, alongside реле часу, voltage relays, and more. 

4. Set Up the Configuration and Wiring

The right configuration and wiring are paramount for the relentless and unstoppable operations of your safety relay. 

You should be able to use shielded cables to minimize the electromagnetic interference and avoid mixing safety and non-safety circuits. 

Furthermore, you should also be able to ensure that terminals are labeled clearly for easier installation and maintenance. Lastly, test outputs for verify proper functionality. 

5. Validate and Test

You wouldn’t really be able to use your safety relay well without validating and testing. So, right as you’ve made the deal with your захист двигуна relay manufacturers and installed their product, validate and test the system to ensure that it matches the standards it is complying with. Conduct functional testing, fault simulation, and performance level verification.

The SIL and PL Compliance Checklist 

Speaking of ensuring the product is compatible with the certifications it complies with, you should also be able to make sure they are working well with these bodies.

SIL is Safety Integrity Level, while PL is Performance Level. These are compliance checklists designed for safety relays, generally involving evaluations and ensure the device meets the requirements it is designed. 

This checklist usually involves determining the required SIL and PL based on the risk assessments, choosing a safety relay with a corresponding rating, and verifying proper integration into the safety-related control systems.

Generally, the checklist consists of:

• Identifying hazardous situations
• Determining required SIL and PL
• Defining the safety function
• Choosing a safety relay with the appropriate SIL and PL
• Considering hardware safety integrity
• Checking again for certification
• Proper wiring and connection
• Testing and validation
• Regular maintenance and monitoring 
• Failure reporting and further evaluation

Safety Relays From TOSUN Electric

Наша компанія, TOSUNlux, is one of the safety relay manufacturers spearheading the industry they are designed for in China and globally. We have safety relays engineered to protect your critical equipment. 

Our safety relay catalog is remarkable for its meticulous engineering, customizability, robust construction, simplified integration, and global certification. What are you waiting for? Get started by exploring our project case studies today to see these TOSUNlux products in action.