SG-BWS-T4
7
3.
INSTALLATION
3.1.
Safety information
For a correct and safe use of the SG-BWS-T4, the points considered in this
section must be observed.
The stopping system of the machine must be electrically controlled. This control system must be able
to stop the dangerous movement of the machine within the total machine stopping time T as per par.
3.4, and during all working cycle phases.
The safety system should be installed and connected by a qualified technician in compliance with the
instructions specified in this manual and industry rules.
The photocells must be securely installed in a particular position so that access to the dangerous zone
is not possible without the interruption of the beams (see 3.3 “General information on sensors
positioning”).
The personnel operating in the dangerous area must be well trained and must have adequate
knowledge of all the operating procedures of the safety control unit.
The START and TEST buttons must be located outside the protected area because the operator must
check the protected area during all Test and Reset operations.
Please carefully read the instructions for the correct functioning before powering the SG-BWS-T4.
3.2.
Precautions to be observed for the choice and installation of the device
Make sure that the protection level assured by the device is compatible with the
real danger level of the machine to be controlled, according to EN 954-1 and EN
13849-1.
The OSSD outputs of the ESPE must be used as machine stopping devices and not as
command devices. The machine must have its own START command.
The dimension of the smallest object to be detected must be larger than the resolution level
of the installed safety sensors.
The ESPE must be installed in a room complying with the technical characteristics indicated
in section 9 “Technical data”.
Do not install the sensors close to strong and/or flashing light sources or close to similar
devices.
Strong electromagnetic disturbance might negatively affect device operation. Should this be
the case contact Datalogic Technical Service.
The operating distance of the safety sensors can be reduced in presence of smog, fog or
airborne dust.
A sudden change in environment temperature, with very low minimum peaks, can generate a
small condensation layer on the sensors lenses and so jeopardise functioning.
3.3.
General information on sensors positioning
Pay special care when positioning the safety photocells so to offer effective protection. The safety
sensors should be installed in such a way that the dangerous area can only be entered after detecting
the sensitive area.
Photocells position is fixed by normative and must respect measures in Tab. 4.
Under standard operating conditions, machine starting must not be possible while
operators are inside the dangerous area.
If the operator is able to enter the dangerous area although ESPE positioning, an
additional mechanical protection must be mounted to prevent the access.
