| 摘要 |
1. A central electric and compressed-air control system for closing doors in railway passenger cars, that includes: momentary switches for door closing control located at doors, and remote control relays located in cars and connected by an induction coil to the wires of the in-train radio link unit, whereas the control system is connected by a NO contact with a time relay coil, with an intermediate relay coil and with a capacitor connected in parallel to that intermediate relay coil, and with parallel circuits of auxiliary relays for individual doors, whereas the time relay comprises a delay element activated upon switching on and fitted with a break contact, whereas through the latter, the following components are connected: parallel valve circuits for auxiliary opening doors, a capacitor and an intermediate relay coil fitted with two NO contacts, whereas one NO contact is connected in series with the time relay coil and with parallel circuits for door auxiliary relays, consisting in that the positive terminal of the in-train radio link (SR) is connected with the NC contact (PZ2) of the intermediate relay (PZ) through a fuse (B), a blocking diode (7D) and the time relay NC contact (PC2)<IMAGE>
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