Muting Time Calculator

Theory

The muting time is the duration for which a safety light curtain’s protective function is temporarily suspended to allow material to pass through. This time must be carefully calculated to ensure safety while maintaining process efficiency.

The basic formula is: $t = \frac{d}{v} \cdot k_{safety}$

Where:

• $t$ is the muting time
• $d$ is the distance between muting sensors
• $v$ is the conveyor speed
• $k_{safety}$ is a safety factor (typically 1.2 to 1.5)

Notes

• The safety factor accounts for variations in conveyor speed and sensor response times
• Sensor spacing should be sufficient to detect the intended material while preventing unauthorized access
• Always verify calculations against manufacturer specifications
• Consider additional safety measures for specific applications

References

1. ISO 13855:2010 Safety of machinery — Positioning of safeguards
2. IEC 61496-1 Safety of machinery — Electro-sensitive protective equipment