EOS4 SAFETY LIGHT CURTAIN
8540733 • 10th February 2009 • Rev.1 5
English
INSTALLATION
Before installing the EOS4 safety system, check all the conditions listed below:
The level of protection of EOS4 (Type 4, SIL3, SILCL3 PLe) must be compatible with
the level of danger of the system to be protected.
The safety system is used only as a stopping device and not to control the machine.
The machine movement is actuated electrically.
All dangerous movements of the machine can be interrupted immediately. In
particular, the machine stopping times must be known and, if necessary, measured.
The machine must not generate hazards due to projection or falling of materials from
above; otherwise, additional mechanical guarding must be provided.
The smallest size object to be detected must be greater than or equal to the
resolution of the selected model.
Knowing the shape and dimensions of the dangerous area, it is possible to calculate the
width and height of the related access area :
Compare these dimensions with the maximum working range and the height of the
protected area of the model used.
Before positioning the safety device, comply with the following general indications:
Check that the temperature of the environment in which the system is installed is
compatible with the operating temperature parameters indicated on the product label
and in the technical data.
Do not position the Emitter and the Receiver close to very bright or flashing sources
of light.
Particular operating conditions may affect the sensing level of photo-electric devices.
In environments characterised by fog, rain, fumes or dust, to always guarantee
correct operation of the appliance, it is advisable to apply suitable correction factors
Cf so as to maximum working range values. In these cases:
where Pu and Pm are, respectively, the working and maximum range expressed in
metres.
The recommended correction factors CF are indicated in the table below.
OPERATING CONDITIONS CORRECTION FACTOR Cf
Fog 0.25
Vapours 0.50
Dust 0.50
Dense fumes 0.25
Table 1 – CF correction factors
If the device is installed in environments characterised by sudden changes in
temperature, suitable precautions must be taken to prevent the formation of
condensation on the mirrors, which could impair detection capability.
Pu = Pm x Cf
To Next Page
Loading...
Need help?
General
