OBSERVATIONS ON COMMUNICATING WITH LIFTS

摘要

The EN 81-28 standard brought about the introduction of the telephone line to the control room as this standard requires new passenger lifts to be equipped with an emergency call system which has a voice connection to a constantly occupied location. It is only natural that modern lift manufacturers want to utilise this telephone connection for remote monitoring and remote parameter setting, so consequently, each manufacturer now offers a monitoring system designed for his own equipment.