Minimum
300 mm
Figure 25. A zone with 70 mm resolution is mounted no lower than 300 mm above the floor
WARNING:
• Safety Zone height (stationary horizontal fields)
• Where the height of a horizontal Safety Zone is H > 300 mm, there is a risk that a person can go
undetected beneath the field.
• If it is possible for an individual to crawl undetected under the Safety Zone and access the
hazard, install supplemental guarding to prevent this access.
3.4 Minimum Safety (Separation) Distance for Stationary
Applications
Response Time Considerations — The SX5’s mirror rotates every 30 ms (33.3 scans [revolutions] per second). The safety
outputs will switch off only after an object is detected in the Safety Zone for at least two consecutive scans. The SX5’s
minimum response time is therefore 62 ms (2 × 30 ms + 2 ms).
To increase the SX5’s reliability in an adverse environments (e.g., with fine airborne particles), increase the number of scans
required before the scanners safety outputs turn off. With each additional scan the response time (Tr) increases by 30 ms.
With K = 1600 mm/s the separation (safety) distance increases by 48 mm per additional scan.
WARNING:
• Scanner Response Time Adjustments
• Failure to follow this recommendation could result in serious bodily injury or death.
• Do not increase the SX5’s 62 ms response time for vertically positioned Safety Zones such as
work cell access (Entry/ Exit) or perimeter guarding applications where a person could move
quickly through the Safety Zone without being detected.
The Safety Zone must maintain a tolerance of at least 40 mm from any wall or fixed object.
WARNING:
• Determine the correct stop time (T)
• An incorrect stop time can lead to serious bodily injury or death. Be sure to include the stop time
of all relevant devices and controls in the calculations.
• Stop time (T) must include the response time of all devices or controls that react to stop the
machine. If all devices are not included, the calculated Safety distance (S) will be too short.
SX5 Safety Laser Scanner
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