| 摘要 |
<p>System for monitoring and controlling a functional unit, comprising a plurality of electrical apparatuses which are to be locally controlled or not, of the type in which two types of electrical circuits are arranged, namely very low-voltage control and monitoring circuits (7), and low-voltage supply circuits (2) terminating in the apparatuses (3) which are connected to a central unit comprising a transformer (4) delivering a very low-voltage current for supplying the said very low-voltage control circuits and, for each served apparatus, a branch-off interposed in the circuit (2) for supplying the said apparatus, a relay, especially an electromagnetic relay (6) controlling the supply of the apparatus and being actuated by a corresponding control circuit (17), which comprises a function card (15) which can be plugged in and disconnected, which card is arranged in the region of the central unit and interposed in the said control circuit (7) and comprising electronic means suitable for modulating, over time and according to a determined operation, the actuation of the relay (6) controlling the supply of the apparatus which is slaved to this control circuit. <IMAGE></p> |
