SU750435A1 - Programme-control device - Google Patents

Description

(54) SOFTWARE CONTROL DEVICE

one

The invention relates to software devices used for the automation of mass-mixing aggregates, for example, at a rubber plant in rubber-technical plants, as well as similar industries of the chemical, pharmaceutical, pharmaceutical and other industries.

A device for programmatically controlling mass mixing units is known, comprising a metering unit, switches connected to a control panel, a control unit, and a block diagram unit l.

A disadvantage of this device is the complexity and narrow scope.

The closest in technical terms to the proposed technical solution is a device for programmed control, containing serially connected setpoint program, control unit, valve, mixer actuator, actuator load moment sensor and time relay, the output of which is connected to the second input of control unit , t

2

the third input of which is connected via a metering device to another output of the mixer and to another input of a klagtna 23. The disadvantage of this device is its low speed.

The purpose of the invention is to increase the speed of the device.

This is achieved by the fact that it contains the first and second current supplying elements and the first and second switching relays, windings, which are connected to another output of the control unit, the first current supplying element is connected to the input of the time relay and through the opening contact of the second switching relay to the second current setting element I which is connected to another time relay, and the disconnecting contact of the first switching relay is connected to the time relay input and to the primary current-giving element.

Claims (1)

The functional device is shown in the drawing, (37 Device-geo contains a program setting block 1, control box 2, first current-guiding element 3, second current-defying 4, torque sensor 5 at water, drive 6, mixer 7, dispenser 8, valve 9, first switching a relay 10 with a break contact 11, a second switching relay 12 with a contact 13, a time relay 14, a neck condition of a lamp stage 15, a capacitor 16, a resistor 17, a switching relay 18c contacts 19, and a button 2 O, closing contacts 21 and 22 switching relays 1O and 12 co The device operates as follows. The shut-off valve 9 is controlled by the control unit 2 in accordance with the program of block 1 and the signals received from time relay 14, and the solvent is introduced into the mixer by the metering unit 8. The duration between control pulses of the time relay is 14 s. taking into account the load and under the influence of commands from the interval counters, command counters and dose counters of the control unit 2 is performed by connecting the output of the drive load moment sensor 5 to the discharge circuit of the capacitor 16 through a cut The source 17, as well as through the contacts 19, 11, 13, the elements 3 and 4 of the negative bias, while at the beginning of the process of mixing the components an el & ment 3 and negative bias are maximal, which gives a count of the intervals of control positive pulses with dependence on the signal level from the load sensor. After the first dose is dispensed by the dispenser 8, the DZ contacts of the switching relay 12 unblock 4 and the negative bias will be fed through two consecutively connected elements 3 and 4, which ensures the lengthening of the intervals during the first reading after pouring the solvent into the mixer 7 with a strong dependence on the idle level load the stroke that takes place immediately after filling the solvent into the mixer 7, and this provides compensation for the deviations of the time of the total absorption of the solvent and the formation of a viscous mass. The shaft between the control pulses of the time relay 14 triggers the relay 18, and the circuit of the relay 12, which, in turn, turns off the negative mixing, is counted by the corrective action of the drive load sender sensor 5. At the final stage, when the deviation of the load moment of the drive during mass processing is insignificant, at the command of the control counter of the control unit 2, the resistance of the resistor 17 decreases, which shortens the duration of counting: myh intervals equal pulses, improving the programming conditions of the final stage of the technology. To increase the clarity of the relay 18 disconnecting the VT negative bias at the anode, it connects the positive, dramatically increasing discharge current time of the driving capacitor 16, thereby improving the workability of the relay 18, which, when activated, creates a charging circuit of the driving capacitor 16 to read next time interval Relay 10 is turned on when the process is started by button 20, Relay 12 is turned on after the dose has been dispensed by the dispenser 8 after the first development. Relay Yu and 12, triggered, self-blocking. Relay 10 is disconnected by a command of the metering counter of the control unit 2, and turnkey 12 is disconnected when the first interval between control pulses of time turn 14 is disconnected after the next dose is dispensed by the dispenser 8, the label of reference intervals in the diagram of registration elements in block 2 is obtained by phase shifting the raeix) of the capacitor to the output of sensor 5. Use of this device by; It improves the adaptability of adjustments to the technological mode and the coverage of the widest possible range without changing the program, facilitates the maintenance of mass mixing units, has a high efficiency, comprehensively address the issues of occupational safety, efficiency and quality of products. Claims An apparatus for software control comprising a serially connected programming task set, a control unit, a valve, a mixer, a receiver, a ms sensor, a drive load circuit, and a time relay whose output is connected to