ReeR

Safety of palletizing systems Detection of irregular objects

One of the problems that can be encountered for the protection of palletizing systems is the handling of irregular objects.
For example: protect palletising systems for sacks or in any case of material not easily stacked, with the presence of seams, labels and protrusions that may randomly change the geometric shape of the pallet and thereby cause false signals from the sensors.

To achieve high flexibility of the safety system of the plant, ReeR has developed SAFEGATE a Type 4 Muting Integrated Access Control Barrier software configurable.

Software configurable models (SMPO) allow configuration of Muting logics and additional functional parameters (i.e. Partial Muting) via Safegate configuration Software (SCS). Programmable models allow further configuration parameters, ideal to address particular issues in more complicated application scenarios.
This solution allows you to easily adapt the safety system on the plant and guarantees compliance with the regulatory requirements on Muting sensor geometry and all other safety-related parameters, as per EN 62046 and other current standards.

One-way openings with pallet exit
The sensors are on the same side of the vertical light curtain and are placed in front of the guarded opening.
The Muting function is activated following concurrent interruption of the 2 sensors within a programmable sensor time. This time can be set through parameter: Sensor time (from 2 sec. to 5 sec.).
Muting function remains active as long as both sensors remain occupied. When the first of the 2 sensors is cleared, the material has a programmable time to abandon the guarded area delimited by the light curtain.

This time can be set through the parameter: End of Muting time (from 2,5 sec. to 6 sec.).
The Muting condition will be disabled as soon as the protected area is cleared. If the light curtain is still occupied, the OSSD outputs are disabled, interrupting functioning of the machine.

Using the parameter: Blind Time (from 250 msec. to 1 sec.) it is possible lengthen the time within which the light curtain, even though resulting occupied (detection of labels, seams, etc.), do not go into alarm and stops the machine.
The maximum duration of the Muting condition (timeout) can be set from 10 seconds to infinity, using the parameter: Timeout.
Two-way openings with pallet entrance/exit The Muting sensors are the first on one side and the second on the other in relation to the vertical light curtain.

The Muting function is activated following concurrent interruption of the 2 sensors within a programmable sensor time. This time can be set through the parameter:
Sensor time (from 2 sec. to 5 sec.). The Muting function remains active as long as both sensors remain occupied.

When the first of the two sensors is cleared, the Muting function is disabled.
Also for this system, the maximum duration of the Muting condition (timeout) can be set from 10 seconds to infinity, using the parameter: Timeout