Sizing
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Warning: These calculations are from ANSI/ RIA15.06, contact RIA for
a copy of this document. Other federal, state, and local regulations
may be applicable for your applications.
Smartscan Incorporated makes no warranty of any kind with regard to this material, including but not limited to, implied warranties or fitness for a particular purpose. The information in this document is subject to change without notice. Smartscan shall not be liable for any errors contained herein for incidental or consequential damages in connection with the performance of use of this material. |
Basics: Object Sensitivity and Detection Zone
Safety Distance Formula: ANSI/RIA 15.06
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Ds = [K x (Ts + Tc+ Tr)] + Dpf Ds = Minimum safe distance between safeguarding device and the hazard. K = Speed Constant. 1.6 m/sec.(63 inches/ sec) minimum based upon movement being the hand/arm only and the body being stationary. Note: A greater value of K may be required in specific applications and when body motion must be considered. Ts = Worst stopping time of the machine/eqquipment Tc = Worst stopping time of the control system. Tr = response time of the safeguarding device including interface. Dpf (Depth penetration factor) = maximum travel towards a hazard within the presence sensing devices field that may occur before a stop is signaled. Dpf will change depending upon the application. The pictures below assist in calculating the Depth Penetration Factor (Dpf) portion of the safety distance formula. Click on the applicable light curtain orientation. |
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Vertical Applications Assuming that there are no other safe guards and no physical obstructions limiting access to the hazard. |
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| Object Sensitivity less than 64 mm | Object sensitivity
equal to or greater than 64mm |
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Horizontal Applications Assuming that there is a physical obstruction limiting access to the hazard. |
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Horizontal Applications Assuming that there are no other safe guards and no physical obstructions limiting access to the hazard. |
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Angled Approach Assuming that there is a physical obstruction limiting access to the hazard |
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