REER S.p.A. - 32 via Carcano - 10153 Torino Italia Internet: www.reer.it - e-mail: info@reer.it
8
8541150 - rev.1 - 10/07/2017
Safety
CAUTIONS BEFORE INSTALLATION
Before installing the SAFEGATE safety system, you must verify all of the conditions listed below:
The protection level (Type4, SIL3, SILCL3, PLe) of the SAFEGATE system must be compatible with
the danger level of the system to be controlled.
The safety system should only be used as a stop device and not as a device for controlling the
machine.
The machine control must be electrically actuated.
It must be possible to immediately stop any dangerous operation of the machine.
In particular, the machine stopping times must be known and, if necessary, measured.
The machine must not generate hazardous situations due to projection or fall of materials from
above; otherwise it is necessary to provide additional mechanical protections.
The minimum size of any object to be intercepted must be greater than or equal to the resolution of
the selected model.
The knowledge of the shape and size of the hazardous area allows an estimation of the width and the
height of its access area:
Compare these dimensions with the maximum working range and the height of the area guarded by
the model used.
Before placing the safety device, it is important to consider the following general guidelines:
Verify that the temperature of the environment where the system is installed is compatible with the
temperature operating parameters indicated on the product label and in the technical data.
Avoid positioning the Emitter and Receiver near intense or ashing high-intensity light sources.
Specic environmental conditions may aect the level of detection of photoelectric devices.
In environments where fog, rain, smoke or dust may be present, it is advisable to use suitable Fc
correction factors at the maximum useful values of the working range to ensure the correct operation
of the equipment. In these cases:
Pu = Pm x Fc
where Pu and Pm are respectively the working range and maximum range in metres.
Recommended Fc factors are shown in the following table.
ENVIRONMENTAL CONDITION CORRECTION FACTOR Fc
Fog 0,25
Steam 0,50
Powders 0,50
Dense smoke 0,25
If the device is placed in environments subject to sudden temperature uctuations, it is imperative
to take the appropriate steps to avoid condensation on the lenses, which may impair the detection
capability.
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