User manual OMRON F3SS

[. . . ] SCEE711-E2-1 F3SS Series Single Beam Safety Sensor INSTRUCTION MANUAL Introduction Thank you for purchasing the F3SS Series Single Beam Safety Sensor. Always heed the following points when using the F3SS: · Make sure that personnel operating the F3SS are knowledgeable about the machine on which it is installed · Read this manual completely and be sure you understand the information provided before attempting to operate the F3SS · Keep the manual in a secure and convenient location and refer to it as necessary. Regulations and Standards (1) The F3SS has not received the type approval provided by Article 44-2 of the Industrial Safety and Health Law of Japan. Therefore, it cannot be used in Japan as a safety device for pressing or shearing machines provided by article 42 of that law. (2) The F3SS complies with the following regulations and standards. [. . . ] Also, perform calculation to assure that reflective surface interference will not create a safety hazard. Select and set emitter and receiver to proper transmit code and operating mode. Mount emitter and receiver where determined in step 2. Make proper electrical and control connections. See Checkout and Test Procedure Logs in Appendix A 4-3 Perimeter Guarding Special Requirements Perimeter guarding is a common application for the F3SS and refers to an installation where a F3SS is generally positioned around the outside perimeter of a machine or robot to be guarded. This could leave sufficient space for an operator to stand between the F3SS and the machine. For perimeter guarding installation, the guarded machine or robot must be wired such that any detected interruption of the F3SS beam will cause an immediate stop of the hazardous motion. The machine or robot must only be restarted by the actuation of a start switch. This start switch must be located outside the area of hazardous motion and positioned such that the hazardous area can be observed by the switch operator. This would prevent a machine from automatically restarting once the obstruction is no longer detected by the F3SS. WARNING Perimeter guarding installations must not allow a machine or robot to restart automatically. Use a start switch placed outside and within view of the hazardous area. 6 4-4 Minimum Safe Mounting Distance and Mounting Height 4 Installation 4-4 Minimum Safe Mounting Distance and Mounting Height WARNING The proper calculation of the safe mounting distance is an important installation step. Never just install a F3SS at any convenient location without regard to the safety distance. If the emitter and receiver are mounted too close to the point of operation hazard, the machine may not stop in time to prevent operator injury. The best information available on safe mounting distance and mounting height comes from the preliminary European standard EN999:1998 sections 6. 1. 4 and 6. 1. 5. Section 6. 1. 5 suggests that single height beams should only be considered where they are parallel to the ground and the beam is broken by a person's body in the upright position. Where the risk assessment allows a single height beam to be used alone then the minimum distance shall be calculated using the following formula: S = (K x T) + C Where: S = the minimum distance from the danger zone to the detection point, line, plane or zone; K = a parameter in mm(inches) per second, derived from data on approach speeds of the body or parts of the body. It is recommended that a minimum value of 1600mm/sec(63 in/sec) be used. To quote from ANSI standard B11. 19-1990, "The value of the hand speed constant, K, has been determined by various studies and although these studies indicate speed of 1600mm/sec(63 in/sec) to over 2450mm/ sec(100 in/sec), they are not considered conclusive determinations. The user should consider all factors, including the physical ability of the operator, when determining the value of K to be used. " T = the overall system stopping performance(second). T must include the response time of controls, clutches, braking systems and the F3SS (35 mS) and the time for the machine to cease hazardous motion. Add a percentage increase factor as recommended by the machine manufacturer, to allow for deterioration of the clutch and braking system. C = an additional distance in mm(inches), based on intrusion towards the danger zone prior to the actuation of the protective equipment. [. . . ] Verify that the red indicator is on and the green indicator is off while the test object is anywhere in the sensing beam. Also, watch for any unprotected access to the danger point. While the machine is in motion, interrupt the sensing beam with a test object. Never insert the test object into the dangerous parts of the machine. [. . . ]