Circuitry for controlling electrically powered drives for roller blinds

摘要

The control circuit has a supply voltage applied in alternation to respective motor windings (12,13) for opposite directions of rotation, using switches (1,2) inserted between the current phase lines (L1) and the motor winding leads, or uses a DC winding with the direction of rotation reversed by inversion of the DC voltage polarity. An electronic switch element (10) between the latter switches and the motor winding leads is coupled to a control (7) communicating with a data memory (17) providing the drive switching data, for programmed operation.