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Learn about safety light screen shielding in one minute
2024-09-02 09:00:00
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The Muting Function is a special function in the safety light screen or safety grating that allows the protection of the safety light screen to be temporarily disabled under certain conditions in order to allow certain objects or devices to be unsecured
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The Muting Function is a special feature in the safety light screen or safety grating that allows the protective effect of the safety light screen to be temporarily disabled under certain conditions in order to allow certain objects or devices to pass through hazardous areas without interference from the safety light screen.
Working principle of light curtain
The light screen shielding function usually involves two separate detection systems:
One is the main safety light screen, used to detect the entry of personnel or large objects; The other is an auxiliary detection system, such as a sensor or grating, to detect a specific object or device. When the auxiliary detection system detects an object or device that is allowed to pass through, it sends a signal to the safety light curtain to temporarily disable the protection function of the safety light curtain and allow the object or device to pass through. Once the object or device passes, the auxiliary detection system activates the safety light curtain again, restoring its protective function.
Light curtain shielding function
L-shield
After the goods pass through A and B, the light screen enters the shielding state. After the goods leave, the light screen exits the shielding state.
T-shield
Similar to the L-type, the difference is that the goods may pass through the light curtain from the reverse.
Type X shielding (cross shielding)
After the goods pass through A and B successively to shield the sensor, the light screen enters the shielding state, and when the goods finally leave A, the light screen exits the shielding.
Other shielding
The goods always stay in the A and B shielded sensors, and the goods are picked up externally by forklift through the light curtain.
If there is space outside the light curtain to arrange the shielding sensor, you can refer to the T-shielding arrangement.
Application scenario
The light screen shielding function is mainly used in scenarios such as automated production lines or packaging lines, where materials or products need to be regularly sent into or removed from hazardous areas. For example, in an automated packaging line, where boxes or pallets may need to be fed into the packaging area, a light screen shielding function can be used to allow these objects to pass through without interference from a safety light screen.
Matters needing attention
The light screen shielding function is mainly used in scenarios such as automated production lines or packaging lines, where materials or products need to be regularly sent into or removed from hazardous areas. For example, in an automated packaging line, where boxes or pallets may need to be fed into the packaging area, a light screen shielding function can be used to allow these objects to pass through without interference from a safety light screen.
- Security
The design and implementation of the light screen shielding feature must ensure that it does not pose a threat to operator safety under any circumstances. Therefore, the reliability and response speed of the auxiliary detection system are very important.
- Compliance
The light screen shielding function must comply with the relevant safety standards and regulations. Must comply with IEC 61496 standard series and ISO 13849-1 international safety standard.
- Monitoring and recording
When using the light curtain shielding function, its use should be monitored and the relevant data should be recorded for analysis and investigation in the event of an accident.
Risk assessment
Before implementing a light screen shielding feature, a comprehensive risk assessment must be carried out to determine whether this feature is needed and how it can be implemented safely. The risk assessment should consider all possible scenarios, including the possibility of failure of the auxiliary detection system, and develop appropriate countermeasures.
In summary, the light screen shielding function is an important safety feature that allows for increased productivity while ensuring safety. However, it must be designed and implemented with great care to ensure that it does not pose any risk to operator safety.
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