In the field of industrial automation and machinery, emergency parking equipment is an important component in ensuring the safety of personnel and equipment. For work scenarios that require two hands, foot emergency stop switches is widely used in stamping equipment, automatic production line, packaging machinery, carpentry equipment, welding workstation, etc., due to its convenient operation and quick response.
However, different devices have different safety control requirements. Choosing the appropriate pedal emergency shutdown switch not only affects the operation efficiency of the equipment, but also directly affects production safety. So what should businesses consider when choosing?
1.Selection of protection rates based on the application environment
Industrial sites tend to have complex environments such as dust, moisture, oil and even chemical corrosion, so the level of protection is a primary consideration.
Common levels of protection include:
IP54: Suitable for general industrial environment
IP65: Dust and water resistant
IP67: Suitable for short immersions in water
IP68: for high humidity and special operating conditions
food processing, pharmaceuticals and outdoor equipment, for example, typically recommend IP67 or higher, while regular assembly lines can choose IP54 or IP65 models.
2. Control Circuit-Based Select Contact Configuration
Foot operated emergency stop switches are usually designed with a normally closed (NC) contact design to ensure reliable circuit disconnection in abnormal situations.
Common contact configurations include:
1NC
2NC
1NO+1NC
2NO+2NC
For equipment with high safety requirements, it is recommended a dual-circuit 2NC design to improve redundancy and reliability of the system.
3. Consider Mechanical and Electrical Lifespan
While emergency stop switches are not high frequency operating components, they must ensure reliable operation at critical moments.
When choosing a product, consider:
Mechanical lifespan
Electrical lifespan
Contact Material
Switch response time
High-quality industrial-grade products usually have a mechanical lifespan of hundreds of thousands or even millions of cycles and meet the requirements of long-term stable operation.
4. Selection of structural type according to Installation Method
Different equipment has different spatial layout, foot emergency brake switch also has different structural design.
Common types include:
Open structure
Applicable to:
Automation equipment
Console
Machinery workstations
Features:
Easy installation.
Lower costs
Shielding structure
Applicable to:
Punching equipment
Heavy Industrial Machinery
Accident-prone workstations
Features:
Prevention of accidental steps;
Improving security
Heavy metal structures
Applicable to:
Mining equipment
Metallurgical industry
Heavy Machinery
Features:
High impact resistance
Long service life
5. Ensure compliance with relevant safety standards
Clear safety certifications are usually required for the export of industrial equipment or the procurement of large-scale projects.
Common standards include:
CE Certification
UL certification
CCC accreditation
IEC standards
ISO 13850 Emergency Stop Function Standard
Products that comply with international standards are not only safer, but also facilitate the entry of equipment into overseas markets.
6. Consider reset method
Operation must be manually confirmed after the emergency stop switch is triggered.
Common reset methods:
Rotation reset
Rotate the button to unlock.
Strengths:
Simple operation;
Wide scope of application
Key reset
A special key is required to reset.
Strengths:
Increased security level
Preventing unauthorized operations
For high-risk devices, a key reset design is generally recommended.
Conclusion:
Choosing the right foot to operate emergency stop switch requires a combination of factors, including level of protection, contact configuration, structure form, safety certification, reset method, supplier strength, and more. Only by making reasonable choice according to the actual application scenario can the safety protection function of emergency parking equipment be brought into full play so as to ensure the steady operation of the equipment and the safety of personnel.
Frequently Asked Questions
Q1: Do foot emergency brake switches have to use contacts that are normally closed?
A: Yes, most safety circuits use normally closed (NC) contacts. When the circuit is disconnected or the equipment malfunctions, the system automatically enters a secure state.
Q2: What are the advantages of a two-loop emergency stop switch?
A: Dual circuit design improves system safety redundancy, and even if one circuit fails, the other can still perform emergency braking.
Q3: Are foot-controlled emergency brake switches susceptible to accidental triggering?
A: The shield design effectively reduces the risk of accidental stepping and malfunction, especially in complex industrial environments.
