7.4 Factory door
Requirements for a gate control system
In many cases a factory entrance is closed with roll gates. Those gates are only opened when vehicles
need to enter or leave the factory grounds. The gate is controlled by the porter.
The sliding gate is opened and closed by means of a pushbutton control in the gatehouse. The porter
can monitor the gate operation.
The roll gate is normally fully opened or it is closed. However, gate movements can always be
interrupted.
A flashing light is activated five seconds before the gate moves, and while the gate is in motion.
A safety pressure strip ensures that people are not injured and that no objects are trapped and
damaged when the gate is closing.
7.4.1 Standard solution
There are many different control systems for operating automatic gates. The OPEN and CLOSE buttons
initiate gate movements into the relevant direction, provided it is not already moving in the opposite
direction. Movement of the gate is terminated either by means of the STOP button or the relevant limit
switch.
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