Last edit: 26/06/2023
3.1.1 Active opto-electronic protective device AOPD: device whose sensing function is performed by opto-electronic emitting and receiving elements detecting the interruption of optical radiations generated, within the device, by an opaque object present in the specified detection zone (or for a light beam device, on the axis of the light beam). [SOURCE: IEC 61496-2:2013, 3.201]
3.1.3 Active opto-electronic protective device responsive to diffuse reflection AOPDDR: device, whose sensing function is performed by opto-electronic emitting and receiving elements, that detects the diffuse reflection of optical radiations generated within the device by an object present in a detection zone specified in two dimensions. [SOURCE: IEC 61496-3:2008, 3.301]
3.1.4 Blanking: optional function that permits an object of a size greater than the detection capability of the ESPE to be located within the detection zone without causing an OFF-state of the OSSD(s).
3.1.7 Electro-sensitive protective equipment ESPE: assembly of devices and/or components working together for protective tripping or presence-sensing purposes and comprising as a minimum – a sensing device; – controlling/monitoring devices; – output signal switching devices.
3.1.24 Muting: temporary automatic suspension of a safety function(s) by safety-related parts of the control system.