Lift - SmartRelay 3 system
A lift is a special case. Lift cabs are usually connected to their environment through a trailing cable. However, the number of lines within the trailing cable is limited. The SREL3 ADV system requires a varying large number of lines, depending on the configuration.
It is highly recommended to use one or several SmartOutput modules in a lift to provide sufficient relay contacts. We also need to consider that the controller should be mounted on top of the lift cab or a network connection must be laid through the trailing cable.
If one or several SmartOutput modules are used, effective access management can be implemented in the lift itself with authorisation required for buttons for specific floors.
The reader and the SmartOutput module are installed in the lift. Users identify themselves with their identification medium in the lift.
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.
IMPORTANT
Interferences in the trailing cable
Lines in the trailing cable through which data is to be transmitted must be shielded (also see Information on cabling).