SU841002A1 - Remote control device - Google Patents

Description

The address is related to telemechanics and is intended for remote control of a two-position object. A device for remote control of on-off objects, in which the power source is located at the control object, is known, the secondary windings of a stabilized transformer located at the control object are connected via an autotransformer circuit, and information on switching on the control unit is the voltage of the device switching output stabilized transformer 1. The disadvantage of this device is the need to select a relay not only for sensitivity, but on time parameters, as to provide protection from loss of controllability of the need to vre m actuation relay comprising a control object to be greater than the time of turning off the relay contact of shunt his start button. The most closest in technical essence to the present invention is a device for remote control, comprising a first diode at the control point, the cathode of which is connected to the first contact of the Stop button through parallel-connected contacts of the Start button and the second relay contact through the first wire of the communication line connected to the first entrance of the object. This control, the second input of which through the second wire of the communication line is connected at the control point to the first output of the coil of the blocking relay, and at the control object to the first output of the coil of the intermediate relay and to the first input of the power source 2. A disadvantage of the known device is the absence of control point controls the state of the intermediate relay of the object, which reduces the reliability of the device. The purpose of the invention is to increase the reliability of the device. The goal is achieved by the fact that a power supply, a second diode and a capacitor are inserted into the device at the control point, the second output of the locking relay coil is connected to the anode of the second diode, the cathode of which is connected to the first contact of the Stop button, the capacitor is connected in parallel to the coil outputs of the blocking relay, the first output power supply is connected to a: node of the first diode, the second output of the power supply source is connected to the second wire of the communication line, a capacitor is inserted at the control object, the first and second diodes and the short circuit The intermediate relay contact, the capacitor is connected in parallel to the terminals of the intermediate relay coil, the second terminal of which is connected to the cathode of the first diode, the anode of which is connected to the first wire of the communication line and through the serially connected second diode and the intermediate relay contact is connected to the second input of the power supply. .

The drawing shows a diagram of the device. ,

The device contains at the control point source power 1, first diode 2, start button 3, 4 blocking relay contacts, blocking relay 5, contacts of the stop button b, the first wire 7 of the communication line, the second diode 8, the second wire of the 9 st line zi, the capacitor 10 at the control object, the first diode 11, the intermediate relay 12, the closing contact 13 of the intermediate relay, the power supply source 14, the executive contact 15 of the intermediate relay and the capacitor 16.

The device works as follows.

Sources of alternating voltage on the control panel and the control object have the same frequency and are switched in phase.

In the initial state, all relays are disconnected, and no voltage is applied to the relays and wires of the communication line. When the 3 Start button is closed from the half-wave of the current, the voltage of which is specified by diode 2. An intermediate relay 12 is triggered through diode 11, and the contact 15 switches on the controlled object. At the same time, contact 13 of the intermediate relay closes (this may be the auxiliary contact of the controlled object), by connecting the second pole of the source of 14. alternating voltage on the control object through diode 17 to the wire 7 of the communication line.

In this case, from the half-wave of the current source 14, the polarity of which is set by diode 17, trips the locking relay 5 at the control object (via the Stop button b and diode 8), with its closing contact 4 through the Start button 3. At this point, the start up process ends and the Start button 3 can be released.

Turn off the device by pressing the 6 Stop button.

Thanks to the appropriate interconnection of the device elements,

the blocking relay 5 on the control panel can receive energy only from the source 14 of an alternating voltage placed on the control object, and through pin 13 of the intermediate relay-12, and the intermediate relay 12 on the control object can receive energy only from the alternating voltage source 1 placed on the remote control, and through the contact 4 of the blocking relay 5.

Thus, when disconnected in the event of any failure of one of the relays, the order is also switched off and is different, since the blocking and intermediate relays are supplied through the contacts of each other. In addition, each relay is powered from its source, which makes it possible to create for it a passport mode for power. This is also facilitated by the absence of any requirements and the sensitivity of the relay to provide protection against loss of controllability, since this question has been constructively solved by the circuit.

Reversing the polarity of all diodes to the opposite performance of the device does not break, so it is possible to build a device variant for controlling a three-position object

Claims (2)

1. Author's certificate of the USSR 444879, cl. E 21 C 33/00, 1974. 2. USSR author's certificate number 256837, cl. H 02J 13/00, 1976 (prototype). 9U shhhhh tt Pic 17 ffy Z9