SU1665413A1 - Device for controlling electromagnet - Google Patents

Abstract

The invention relates to electrical engineering and is intended to control electromagnetic devices used in automatic control systems. The aim of the invention is to increase the control efficiency and the reliability of the operation of the movable electromagnet system. The device allows the electromagnet to be controlled in an automatic mode with a recording of the operation of the electromagnet when the mobile system of the electromagnet is operating correctly with the memorization of the actual operation time of the electromagnet, which can be measured. In this case, an automatic removal of the control signal from the winding of the controlled electromagnet is provided, which increases the efficiency of the device operation circuit and facilitates the operation mode of the electromagnet. In addition, the device provides automatic detection of the fact that the response time of the mobile system is exceeded, which makes it possible to automate the search for faulty electromagnets with reduced reliability in operation and replace them in a timely manner, which allows for more efficient control of the electromagnet and increases the reliability of the normal functioning of its mobile system. 2 Il.

Description

The izoretenie refers to electrical engineering and is intended to control electromagnetic devices (relay contactors, contactless electromagnets, and so on) used in automatic control systems.

The purpose of the invention is to increase the efficiency of control and reliability in the operation of the movable electromagnet system.

Fig. 1 shows a functional diagram of the device in Fig. 2 - diagrams explaining the operation of the device.

The device contains the first output for connecting the power source 1, connected to the first output of the switch 2, the second output of which is connected to the input of the first pulse counter 6 and the second the input of the first element OR 7, the output of which is connected to the direct input of the third element BANGE 8 by the output connected to the control input of the first key 9, the first output of which is connected to the connection point of the second 3 and third 4 keys,

cl

the second terminal is with the first terminal for connecting the winding 10 of the electromagnet, the second terminal for connecting which through the current sensor 11 is connected to the second terminal for connecting the source 1 of the power supply. The input of the first single-oscillator 12 is connected to the output of the first pulse counter, and the output is connected to the installation inputs to the zero state of the first trigger 13 and through the first element of the Delay 14 is connected to the input of the waiting multivibrator 15, the output of which is connected to the first input of the first element OR 7. The fourth the key 16 is connected in parallel to the current sensor 11, and the control input of the key 16 is connected to the control input of the third key 4 and to the direct output of the first trigger 13. The input to the zero output of the second trigger 17 is connected to the output of the first one-wave Ator 12, and the inverse output with control inputs of the sixth 18 and fifth 19 keys. The second one-vibrator input 20 is connected with the second output of the key 18, and the output is connected to the input of the installation of the third tpnrrepa 21 to the zero state, the direct output of which is connected to the first display element 22, made, for example, on the LED, the inverse output to the direct output the input of the first element BANGE 23, the inverting input of which is connected to the first output of the key 18 and to the first output for connecting the winding 10 of the electromagnet, and the output to the input of the third one-oscillator 24, the output of which is connected to the direct input of the second element BANNING 25 and to the input of the second etchika 26 pulses. The output of the second BANCH element 25 is connected to the first input of the third element OR 27 and through the second delay element 28 to the direct input of the fourth element OR 29, the output of which is connected to the installation input to the unit state of the first trigger, and the second input to the second input the third element OR 27 and with the second input of the second element OR 30, the first input of which is connected to the output of the third one-shot, and the output - to the installation input to the unit state of the second trigger. The electromagnet control unit 31, performed, for example, on a differentiating amplifier 32 and a limiter 33, is input through a switch 19 connected to the output of current sensor 11, and the output to the installation input to the zero state of the fourth trigger 34, the installation input to single state the design of which is connected to the second input of the element OR 30, and the inverse output to the input of the fourth one-shot 35. The fifth trigger 36 is connected to the zero-state input

to the input of the waiting multivibrator. The control input of the seventh 37 key is connected to the output of the waiting multivibrator. Stable current generator 38 input through

the key 37 is connected to the second output of the switch 2, and the output to the first output of the eighth key 39, the control input of which is connected to the inverse output of the flip-flop 36, and the second output to the input of the reference element 40, the output of which is connected to the output terminal 41 devices. The initial installation bus 42 is connected to the second input of the element OR 30, to the installation input to zero.

5 is the state of the counter 26 and with the installation input in the single state of the sixth trigger 43, the installation input in the zero state of which is connected to the output of the fourth one-shot 35 and to the first input of the fifth

0 of the element OR 44, the output of which is connected with the installation input to the single state of the fifth trigger 36, and the second input - with the installation inputs to the single state of the trigger 17 and 21, as well as with the output of the element

5 OR 30. The ninth key 45 is connected to the output of the element 40 by the first pins, the control input with the inverse output of the trigger 43, and the second output to the input of the fifth one-oscillator 46.

0 through the third delay element 47 is associated with the first output of the tenth key 48, the second output of which is connected to the installation input to the zero state of the seventh flip-flop 49, the installation input to the single state

5 of which is connected to the device installation bus in the initial state, and the inverse output to the first input of the seventh element OR 50, the inverting input of the BAN 8 element and the first input of the strap element OR 51, whose output is connected to the inverting input of the fourth BAN 52, the direct input is connected with the output of the element OR 30, and the output is connected with the control input of the storage element 40. The first input of the comparator 53 is connected to the second output of the key 45, the second input is connected to the Don reference bus of the device, and the output through the sixth single-shot 54 soy Inonii installation with input into the null state

0 of the eighth flip-flop 55, the setup input to the unit state of which is connected to the device setup bus in the initial state, direct output to the control input of the tenth key 48, and inverse output to the second inputs of the OR 50 and 51 elements and c the fourth display element 56, made, for example, on the led. The output of the seventh element OR 50 is connected to the inverting input of the BAN 25 element. The second and third elements 57 and 58

indications made, for example, on LEDs, are connected respectively to the direct outputs of the flip-flops 34 and 49.

The storage element 40 is made, for example, on the key 59, the capacitor 60 and the operational amplifier 61.

The device works as follows. Before the start of operation of the circuit, a power source 1 is connected to the first and second terminals, a winding 10 of the electromagnet is connected to the first and second terminals to connect the electromagnet winding, and an initial state is given a pulse (see Fig.2, a) for setting the device to the initial state, under the action of which the counter 26 is set to the zero state, as a result of which the key 3 remains in the closed state. The trigger 34 is set to one and the display element 57 is turned on, and a logical zero is set at its inverse output (see Fig. 2, n); the trigger 43 is set to one state, as a result of which its inverse output is set to a logical zero (see Fig. 2, p), which is fed to the control input of the key 45, under the action of which the key 45 remains in the open state; the trigger 49 is set to one state, as a result, the display element 58 is turned on, and a logic zero is set at the inverse output (see Fig. 2, p), which goes to the inverting input of the BAN 8 element and does not affect its operation, as well as through the OR 50 and 51 elements, the specified signal goes to the inverting inputs of the BANKS 25 and 52 elements and also does not affect their response; the trigger 55 is set to one state, whereby the key 48 is closed, and a logical zero is set at the inverse output (see Fig. 2c), under which the display element 56 remains in the off state. Through the OR 50 and 51 elements, this signal goes to the inverting inputs of the BANGE 25 and 52 elements and does not affect their response; through the elements OR 27 and 29, the counter 6 is set to zero, respectively, and the trigger 13 is set to one (see FIG. 2, b) and under the influence of the signal of the logical unit from its direct output (see, FIG. 2, 6} the keys 4 and 16 are closed, through the element OR 30 the triggers 17 and 21 are set to one state. In this case, the action of the logical zero from the inverse output of the trigger 17, the keys 18 and 19 remain in the open state, the action

the logical unit from the direct output of the trigger 21 turns on the display element 22, and the logical zero from the inverse output of the trigger 21 goes to the direct input of the BAN 23, which ensures the preservation of the zero level at the output of the THR-PRET23 element. In addition, the addition of the prohibition element 52, the pulse (see Fig. 2, a) goes to the control input of the storage element 40, as a result of which the key 59 is activated for the duration of the pulse, thereby maintaining the level of the capacitor 60. a zero voltage at the output of the storage element 40 (see Fig. 2, k), and an additional element 44, OR 44, the pulse (see, Fig. 2, a) sets the trigger 36 to one state, as a result of which the logic zero the inverse output (see Fig. 2, and), the key 39 remains open. condition.

The mode of operation of the one-shot 21, 20, 24, 35, 46, and 54 is chosen so that when power is applied to the circuit of the device, the zero voltage level is set at their outputs.

The mode of operation of the comparator 53 is selected so that a negative voltage is established at its output.

In this state, the device is before the start of electromagnet control.

To control the electromagnet, switch 2 is turned on. In this case, the voltage from the output of power supply 1 through switch 2 and closed switches 3 and 4 is fed to the control input of pulse generator 5, which begins to form square pulses, the duration of which is selected an electromagnet system, and a pause due to the condition that the movable system returns to its initial state. The pulses from the output of the generator 5 are fed to the input of the counter 6 pulses, which counts them, and through the OR element 7, the indicated pulses go to the direct input of the BAN 8 element, which passes them to the control input of the key 9. For the duration of the specified pulses, the key 9 closes , and during the pause, the voltage from the power supply output to the winding 10 of the electromagnet is disconnected to the pulse from the output of the generator 5 of pulses (see Fig. 2, in, the time interval between points 62-63). Thus, shaking pulses are formed, the number of which in the general case can be m, where m is 1, 2, 3 ... and depends on the width of the counter of 6 pulses (in FIG. 2, in m 3).

By filling the counter 6 pulses at its output, a signal of a logical unit is generated, under the action of which the one-shot 12 is triggered and generates a pulse (see Fig. 2, g, time point - 63) at its output, which goes to the zero-state setting triggers 13 and 17, as well as to the input of delay element 14. In this case, trigger 13 is set to the zero state, as a result of which a logical zero is set at its forward output (see FIG. 2, b, time point 63), under the action of which the keys 4 and 16 are opened. and the key 4 turns off the control input of the pulse generator 5 and stops forming the pulses at the output of the generator 5, as a result of which the switch 9 stops, which remains in the open state, and the shaping and supply of the shaking pulses to the winding 10 stops (see figure 2, in, time point - 63).

When the key 16 is opened, the coil 10 of the electromagnet is connected via the current sensor 11 to a second terminal for connecting the power source 1, thereby enabling the operation of the movable electromagnet system to be monitored.

The trigger 17 is also set to the zero state, as a result of which, on its inverse output, an organic unit is installed (see Fig. 2, e), under the action of which the keys 18 and 19 are closed.

Passing the delay element 14, the delay time of which is chosen from the condition of ensuring the return of the movable electromagnet system to its initial state after the impact on the winding 10 of the electromagnet shakes, the pulse (see Fig. 2, e) is fed to the input of the pending multivibrator 15, which is triggered and generates a pulse at its output, which through the elements OR 7 and the prohibition element 8 enters the control input of the key 9. The key 9 closes for the duration of the pulse from the output of the multivibrator 15 and connects the power source to the winding 10 lektromagnita thus generated control signal (see FIG. 2, g) the winding 10 of the electromagnet. Passing through the winding of the electromagnet, the control signal is fed to the current sensor 11. Under the action of the control signal, the current in the winding of the electromagnet increases according to a certain law.

If the moving system of the electromagnet does not work, then the current increase in the electromagnet winding occurs without

characteristic failure (see figure 2, s, in the time interval between points 64-65) caused by the movement of the moving system of the electromagnet.

Voltage drop on current sensor 11

(see FIG. 2, g), proportional to the current, flows through the switch 19 to the input of the block 31 and is differentiated in time by the differentiating amplifier 32. The absence of a characteristic dip in the rising current curve in the electromagnet winding leads to the output of the limiting amplifier 33 and, therefore, at the output of the response control unit 31

5 electromagnet (see figure 2, t, the time between points 64-65) there is no impulse, fixing the operation of the electromagnet. As a consequence, the trigger 34 does not change its state (see,

0 of FIG. 2, n), the one-shot 35 and the trigger 43 do not work, and the key 45 remains in the open state, ensuring that the locking element 40 is disconnected from the one-shot 46 and the comparator 53.

5Pulse (see figure 2, e) from the output element

14 delays also arrive at the setup input to the zero state of flip-flop 36 and sets it to the zeroth state, with the result that a logical unit signal appears at the inverse flip-flop output 36 (see Fig. 2, and, the time point is point 64) , under the action of which the key 39 closes, connecting the output of the stable current generator 38 to the input of the memory

5 of the element 40, and at the moment of occurrence of the pulse from the output of the standby multivibrator 15, the key 37 operates and connects the input of the stable current generator to the power supply 1 and through the stable current generator

0, the linear charge of the capacitor 60 (see Fig. 2, k) of the storage element 40 begins, which will be charged until the control signal is terminated in the absence of a pulse that fixes the response

5 electromagnets, but the key 45 remains open and the voltage from the element 40 does not reach the output of the key 45.

At the same time, the control signal (see Fig. 2, g) is fed to the inverting input

0 of the prohibition element 23 and prohibits its operation, and on the leading edge of this signal, through the key 18, a single vibrator 20 is activated and generates a pulse at the output, under the action of which the trigger 21

5 is set to the zero state, and the logical unit signal from the inverse output of the flip-flop 21 is fed to the direct input of the BANNER element 23. At the end of the control signal (see Fig. 2, g, time point 65), the signal

Provide threshold voltage control with a comparator 53.

If the response time is tcp. the electromagnet is within the normal range, the negative voltage is maintained at the output of the comparator 53, the trigger 55 remains in one state, and the key 48 is closed, as a result of which the output pulse of the one-oscillator 46 passes the delay element 47 (see Fig. 2 , x), through the key 48, enters the input of the installation of the zero state of flip-flop 49, as a result of which the inverse output of this flip-flop is set to a signal of the logical unit that arrives at the inverting input of the BAN 8 element and prohibits its triggering, as a result key 9 and the formation of the control signal is stopped (see FIG. 2, g, time point-point 67), and also the display element 58 is turned off.

In addition, this signal, passing through the OR 50 and 51 elements respectively, prohibits the prohibition of the BANKS 25 and 52 elements, as a result of which the impulse generated at the end of the control signal (see Fig. 2, l) does not reset the pulse counter 6 and the trigger 13 and the capacitor 60 are not discharged, as a result of which the shaking pulses and the control signal do not form, and the storage element 40 switches to the storage mode of the actual response time tcp. an electromagnet that can be measured at terminal 41, since the voltage amplitude from the output of the storage element 40 is determined by the duration of the pulse received at the input of the key 39 and, accordingly, at a certain time scale of the operation of the electromagnet. The impulse itself (see Fig. 2, l), as described above, is recorded in counter 26, which allows to determine by what counter 26 indicates which control cycle the electromagnet has triggered according to the response time parameters set by the specification for the electromagnet. .

If the response time is t cp. an electromagnet exceeds the norm (see FIG. 2, 3) the time interval between points 68-69), when the amplitude of the voltage Ua reaches the charge of the capacitor 60 of the element 40 of the reference voltage Uon (see FIG. 2, k) by closing the key 45 , a comparator 53 is triggered, at the output of which a positive polarity appears, under the action of which the one-shot 54 is triggered and generates a pulse at the output (see Fig. 2, p), under which the trigger 55 is set to zero, due to which opens key 48 and does not skip

the pulse (see FIG. 2, x), which fixes the normal operation of the electromagnet, to the input to the zero state of the trigger 49, which remains in the unit state, the display element 58 does not turn off, indicating that the electromagnet does not have a normal operation norm flip-flop 55 sets the logic unit signal (see FIG. 2.c), which

10 enters display element 56 and turns it on, and passing through elements OR 50 and 51, respectively, prohibits the prohibition of prohibition elements 25 and 52, respectively, as a result of which, as described above, the generation of shaking and control pulses does not occur, and the storage element 40 enters the storage mode of the actual response time t cp of the electromagnet. At the same time

The 20 readings of the counter 26 can also be determined by the number of the electromagnet control cycle.

The device allows visual control of each cycle of the control by the electromagnet. When a movable electromagnet system fails, the display element 22 is periodically turned on and off, the display elements 58 and 57 remain on all the time, 30 and the display element 56 is off all the time. When the mobile system is activated, the display element 57 is turned off. Moreover, if the response time of the electromagnet is within the required norm, then the display element 58 also turns off, and if the response time of the electromagnet exceeds the norm, the display element 58 remains on and another display element 56 also turns on. By

40, after the operation of the control device, the switch 2 is opened.

The technical effect from the use of the proposed technical solution is expressed in increasing the efficiency of control and reliability of the correct operation of the mobile system of the electromagnet. This is reflected in the fact that the proposed device, in comparison with the known, provides not only the impact on the mobile

50 an electromagnet system by swinging and generating a control signal with the control of the fact of electromagnet actuation, but also allows the electromagnet to be controlled in automatic mode

55 with fixing the operation of the electromagnet only with the correct operation of the moving system of the electromagnet and finding the response time of the electromagnet within the normal range given by

technical conditions on electromagnet.

the prohibition from the inverting input of the prohibition element 23, which triggers it, since at its direct input there is a logical unit from the inverse output of the trigger 21. On the leading edge of the voltage of the logical unit from the output of the prohibition 23, the single-oscillator 24 starts which a pulse is formed (see FIG. 2, l, the time point is point 65), which, having passed the element OR 30, sets the triggers 17 and 21 to one state, as a result of which the keys 18 and 19 open and the signal of the logical unit is removed from direct the entry of the prohibition element 23, and the passage of the element ZA-PRET 25 and the element OR 27 - sets the counter 6 to zero. Pass the element OR 30 and the element BAN 52, the specified pulse goes to the control input of the storage element 40, as a result key 59 and discharges capacitor 60 (see Fig. 2, k). Passing the elements OR 30 and 44, the pulse (see FIG. 2, L), sets the trigger 36 to a single state, as a result of which its inverse output is set to a logical zero (see FIG. 2, and), which leads to the opening of the key 39,

In addition, the prohibition element 25 has passed, the specified pulse arrives at the input of delay element 28, the delay time t of which is chosen from the condition that the moving system of the electromagnet returns to its initial state after the control signal, and the pulse itself is counted by the pulse counter 26. From the output of the delay element 28, a pulse (see FIG. 2, m) through the OR element 29 is fed to the installation input to the trigger one unit 13. In this case, the trigger 13 is set to one, and the keys A and 16 are closed and A new cycle of shaking and control pulses begins, similar to that described above. The total number of pulse supply cycles is determined by the counter 26 and depends on its size and can be equal in the general case, n, where n 1, 2, 3 ... When the mobile system of the electromagnet fails to operate, during the entire time of electromagnet control Once the pulse counter 26 is filled with a signal of a logical unit, a command is sent from its output to the control input of the switch 3 to stop the shaking pulses and the control signal to the electromagnet winding. In this case, the key 3 is opened and disconnects the power source 1 from the electromagnet control circuit.

If the moving system of the electromagnet is triggered, then the current increase in the electromagnet winding occurs with a characteristic dip caused by the movement of the core of the moving system of the electromagnet (see Fig. 2, 3, time point between points 66-67), and on the leading edge of the control signal (see Fig. 2, g), as described above, the linear charge of the capacitor 60 of the storage element 40 begins. The applied voltage on the current sensor 11 proportional to the current flowing through the electromagnet winding is differentiated in time by the amplifier 32 of the block 31 pin ol actuation electromagnet. Limiting amplifier 33 isolates and amplifies the pilot pulse (see Fig. 2, t), with the falling edge of which trigger 34 is set to the zero state, with the result that a logical unit signal appears at its inverse output (see Fig. 2, n), which is fed to the input of a single-vibrator 35, at the output of which a pulse is formed (see Fig. 2.y). The impulse (see Fig. 2, y) is fed to the input of the installation in the zero state of a trigger 43, which is then set to the zero state, as a result of which its inverse output sets the signal of the logical unit (see Fig. 2, p), under the action of which the key 45 closes.

At the same time, the element OR 44 passed, the specified pulse arrives at the installation input to the unit state of the trigger 36, as a result of which the inverse output of this trigger is set to a logical zero (see Fig. 2, i), under the action of which the key 39 opens and the linear charge stops A capacitor 60 (see Fig. 2, k) of the memory element 40, and the amplitude of the capacitor charge voltage in a certain scale corresponds to the actual response time tcp. an electromagnet (see FIG. 2, k, 1H), which through the voltage amplifier 61 arrives at the output terminal 41 and through the switch 45 - at the input of the one-oscillator 46 and at the input of the comparator 53, which performs the threshold control of this voltage with respect to the reference voltage U0n selected from the condition of the maximum allowable response time of the electromagnet specified by technical conditions on

electromagnet. Under the action of the voltage from the output of the element 40, a one-oscillator 46 is triggered and forms at its output a pulse (see Fig. 2, f) which is fed to the input of the delay element 47, the delay time T2 of which (see Fig. 2, x) It is chosen from the same way by fixing the actual response time of the electromagnet and its memorization. At the same time, during normal and proper operation of the moving system of the electromagnet, the device automatically removes the control signal from the electromagnet winding, which allows the electromagnet winding to operate and reduces the time it is under voltage, which increases reliability in operation and prolongs the service life controlled electromagnet.

In addition, the device provides automatic detection of the fact that the electromagnet has triggered time, which indicates a malfunction in the mobile system of the electromagnet, a sharp decrease in the reliability of the electromagnet and is a sign of a malfunction and failure of the electromagnet.

This circumstance allows timely detection of electromagnets with reduced reliability in operation, timely removal of them from operation and replacement with conditional ones, which allows predicting the operation of automation devices using a controlled electromagnet and, therefore, improving the reliability of relay automation devices .

The proposed device can be used as a device for controlling a contactless electromagnet located in inaccessible and inaccessible places and structures of automation devices with a remote supply of a control signal to the control winding with a simultaneous increase in control efficiency due to the termination of the control signal while fixing the correct operation of the moving electromagnet system , which allows to reduce the energy consumption of the control signal applied to the electromagnet winding, and Therefore, it reduces the power consumption of the power source and increases the efficiency of the device circuit.

Claims (1)

Invention Formula A device for controlling an electromagnet containing terminals for connecting an electromagnet, an electromagnet actuation control unit, a pulse generator, first and second delay elements, first through sixth keys, first through fourth elements OR, first and second pulse counters, current sensor, first through the third one-shot, the waiting multivibrator, the first and second elements indication, first and second elements BANKS, device reset bus, first to fourth triggers, terminals for connecting the power source and a switch, the first terminal of which is connected to the first terminal for connecting the power source, and the second terminal through sequentially the connected second and third keys are connected to the input of the pulse generator, the output of which is connected to the second input of the first OR element and to the input of the first pulse counter, the output of which is connected to the input of the first single vibrator, output which is connected to 5 inputs for setting in the zero state of the first and second triggers and through the first delay element - with the input of the waiting multivibrator, the output of which is connected to the first input of the first OR element. The first output of the first key is connected to the connection point of the second and third keys, and the second output is connected to the first output to connect the electromagnet winding, the second output to connect through which 5 the current sensor, shunted by the fourth key, is connected to the second output for connecting the power source; the control inputs of the third and fourth keys are combined and connected to the forward output of the first trigger; the first output for connecting the electromagnet winding is connected to the inverting input of the first element ZAPRET and through serially connected sixth key and second one-shot 5 - with the installation input to the zero state of the third trigger, the direct output of which is connected to the first display element, the inverse output to the direct input of the first BAN element, and the installation input to 0 the unit state is connected with the output of the second OR element and with the installation input into the unit state of the second flip-flop, the inverse output of which is connected to the control inputs of the sixth key and the fifth 5 key, the first output of which is connected to the second output for connecting the electromagnet winding, and the second output - to the input of the electromagnet control unit; the output of the first element BANE sub0 is connected to the input of the third one-oscillator, the output of which is connected to the first input of the second OR element, with the input of the second a pulse counter and with a direct input of the second BANNER element, the output of which is co-connected with the first input of the third OR element and through the second delay element with the first input of the fourth OR element. the output of which is connected with the installation input to the single state of the first trigger, and the second input to the second input of the second and of the third OR element, with the input of setting the second pulse counter to the zero state, with the device installation bus into the initial state and with the installation input of the fourth trigger to the single state, & the zero-setting installation is connected to the output of the electromagnet control unit and the direct output is with the second display element, the output of the Third element OR is connected to the input of the first pulse counter to the zero state, the output of the second Pulse counter is connected to the control input of the second key , characterized in that, in order to increase the efficiency of control and reliability in the operation of the mobile system of an electromagnet, the Third and Fourth elements of the BAN, the eighth to the eighth triggers, the fifth to the seventh elements OR, the third delay element, the output terminal of the device, the storage element, the seventh to tenth keys, the fourth, fifth and sixth one-oscillators, a comparator, the third1 and fourth display elements and a stable current generator, the input of which through the seventh key is connected to the second the output of the switch and the output with the first output of the eighth key, the second output of which is connected to the input of the storage element, the output of which is connected to the output terminal of the device and the first output of the ninth key, the control input of which is connected to the inverse output of the sixth trigger, and the second the output is connected to the input of the fifth one-shot, the output of which through the third delay element is connected to the first output of the tenth key, the second output of which is connected to the input of the zero-setting of the seventh trigger, the direct output of which connected to the third display element the fourth one-shot one is connected to the inverse output of the fourth trigger, and the output is connected to the zero-set input of the sixth trigger and the first input of the fifth OR element, the second input of which is connected to the output of the second OR element the fifth trigger, the setup input to the zero state of which is connected with the input of the standby multivibrator, and the inverse output with the control input of the eighth key, the control input of the seventh key is connected to the first input of the first OR element, output d is coupled to a direct input of the third element of the prohibition, the output of which is connected to the control input of the first switch and the inverting input terminal - to the first input of the sixth OR gate with inverted output the seventh trigger and the first input of the seventh element OR, the output of which is connected to the inverting input of the second element BANGE, and the second input to the fourth display element, with the inverse output of the eighth trigger and the second input of the sixth element OR, the output of which is connected to the inverting input of the fourth element The BAN, the output of which is connected to the control input of the memory element, and the direct input to the output of the second element OR, the comparator to the first input is connected to the second output of the ninth key, the second input to the bus reference second voltage, and output through the sixth monostable multivibrator coupled to the input for setting the zero state of the eighth flip-flop, a direct output of which is connected to the control input of the ten key, and setting a state of a single input is connected 0 with the installation inputs to the single state of the seventh and sixth flip-flops and with the device installation bus in the initial state. etfrS99l