Entrance barrier - SmartRelay 3 system
People who want to drive into a segregated area, such as a company car park, need to pass through an entrance barrier. Not everyone can have an authorised identification medium as this would involve considerable organisation. An entrance barrier is also normally installed outdoors and is thus exposed to the weather, vandalism and sabotage.
The SREL3 ADV system offers an intelligent solution for such situations. The controller is installed in a protected area, such as the engineering room. A reader needs to be installed close to the barrier. There are two solutions:
- The reader is fitted into the barrier housing. This variant discreetly blends in. It provides excellent protection against the weather, vandalism and sabotage.
- The reader is fitted on the barrier housing. This variant is visible on the outside and makes it easier for users to place their identification medium onto the reader. The read range is better compared to a reader fitted inside the barrier housing. The protective housing (SREL2.COVER1) ensures protection against the weather, vandalism and sabotage.
The user can use their identification media to check authorisation while in the car. If the user does not have an identification medium, but is expected, they can still announce their arrival, using an intercom, for example. Another person who is in the protected area can then let the user in by pressing the connected button. The button can be installed in a gatehouse, for example, which only allows external customers to enter during business hours while users with identification media can come in at any time.
No-one can manipulate the data since communication is secured from the reader to the controller and to LSM. When the data reach the controller, the controller evaluates them. If there is a virtual network and connection to LSM (Ethernet), the latest information is retrieved using the identification medium; if not, the system used the last status saved internally. Depending on the result of the evaluation, the controller triggers the required action, such as actuate a relay.
If a virtual network is used, the system is ideal for use as a gateway. The barrier is a locking device which is very heavily used. This means that many identification media are already synchronised with the LSM database before they reach the building entrance. As a result, there is less load on the gateway on the building door. In this case, the reader should be installed where it is visible for users to ensure that they can hear or see the reader feedback signals.
The controller can be powered either via an external power supply unit or via the network line. The controller, in turn, can power the reader. If the voltage drop is too great, the reader can also be supplied by an external power supply unit (see External power supply).
Since a feed line needs to be installed for the barrier motor, the power supply for the reader can be easily connected to this line. Power is reliably supplied to the reader with a power supply unit, so the reader is not affected by any voltage drops due to line length.
See Connecting one or more readers and Connecting one or more buttons on wiring.