SAETT ATT STYRA EN HISS FOER MEDELSTORA OCH HOEGA FAERDHASTIGHETER OCH STYRANORDNING FOER UTFOERANDE AV SAETTET

摘要

A nominal value element, an actual value element, a control panel and a selector are operatively associated with a speed regulated drive for an elevator cabin. Those floors lying in the selected running direction are successively searched for the presence of a call and, immediately after starting of the run, a pulse sequence is produced to advance the selector and a counter, in synchronism, step-by-step. Upon discovery of a call by the selector, or when a pulse total greater by one than the number of floors that can be served at a running speed not exceeding a predetermined first velocity, the pulse sequence is interrupted by the counter. In the absence of a call, after interruption of the pulse sequence, and until a call is discovered, the selector is advanced by brake engagement start pulses correlated with a predetermined second velocity. The braking nominal voltage, corresponding to the running speed adjusting itself, is preselected by evaluating the counting position of the counter. The brake engagement starting pulse, to be supplied to the nominal value element, is selected by the starting pulse correlated to the target floor as well as to the selected running direction and to the running speed. The nominal value element includes a time-dependent nominal value setter, a path-dependent nominal value setter, a root former and a discriminator. The control panel includes a selection circuit, connected to shaft switches, a nominal value starter, a blocking circuit, the counter, a pulse generator and a stopping transmitter. The nominal value element and the selector are connected to the control panel.