6
In particular, please note that:
• All the photocells produced by NICE feature a synchronisation system that eliminates the problem of interference between two pairs of
photocells (please consult the photocell instructions for further details).
• The “PHOTO” pair of photocells have no effect when the gate is opening, while they reverse movement when the gate is closing.
• The “PHOTO1” pair of photocells cause a temporary stop when the gate is opening, whereas they reverse movement when the gate is closing.
• The triggering of the sensitive edge connected to the “ALT” input causes an immediate stop and a short reverse run.
2
1) Electromechanical actuators
2) Flashing light
3) Control unit
4) Key-operated selector switch
5) Pair of photocells (PHOTO)
6) Pair of photocells (PHOTO1)
7) Sensitive edges
2.1) Typical system layout
In order to explain certain terms and aspects of automatic gate systems, we will now illustrate a typical system layout.
ATTENTION: Automatic gate and door systems may only be installed by qualified technicians in compliance with
current legislation. Observe the directions contained in the “Warnings for fitters” file.
2) Installation:
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