IFM Electronic Safety light grids
Safety light grids are used to prevent danger from motion of machine parts for people or goods. These safety sensors operate without contact. In the standard they are also called electrosensitive protective equipment (ESPE). On activation the protective equipment ensures that the outputs are switched off which results in a machine halt. Safety light curtains and safety light grids consist of an optical transmitter and receiving element. In the transmitter element there are several light emitters and an equal number of receivers in the receiving element. When one or several light beams are interrupted, the system switches off the safe OSSD outputs (Output Signal Switching Device).
The following criteria are important when choosing light curtains for security systems:
-Protective function - depending on the danger degree the protective function ensures that access to the danger zone or approaches control in dangerous zone is prevented. Protective function directly depends on the resolution (detection ability).
-ESPE Type. The OY light grids and curtains meet the requirements of EN61496, protection class 2 and 4.
-The height of protected zone is the height of the maximum possible area of the light curtain control.
-The width of protected zone is the maximum distance between the transmitter and the receiver of the light curtain.
-The width of the protected zone of light curtains OY is 0 ... 4 m or 3 ... 12 m (optional).
IFM Electronic safety light grids main features:
-Type 2 and type 4 safety light curtains to IEC 61496.
-Now with SIL to IEC 61508 and PL to ISO 13849.
-Can be installed without dead band. Mounting accessories supplied with the units.
-Ranges selectable on the unit: 0...4 m or 3...12 m.
-Easy to connect via the tried and tested M12 connector (5- or 8-pin).