User Manual

Applications
IDEC SmartRelay Manual 281
8.4 Factory door
The entrance to a company’s premises is often closed with a
gate. The gate is only opened to let vehicles in and out.
The gate is controlled by the porter.
8.4.1 Requirements for a gate control system
The gate is opened and closed by means of pushbuttons
in the gatehouse. The porter can monitor the operation of
the gate at the same time.
The gate is normally fully opened or fully closed. The gate
motion can be interrupted at any time.
An indicator lamp is switched on five seconds before the
gate starts moving and when the gate is in motion.
A safety pressure bar prevents harm to persons and
objects from getting trapped or damaged when the gate
is closing.
Safety pressure bar
Indicator lamp