RU63077U1 - TWO-ORDINARY ELECTRIC DRIVE CONTROL DEVICE - Google Patents

Abstract

This technical solution relates to control and regulatory systems for general use, namely, to process control tools.

The control device of the two-axis electric drive is designed to perform the functions of collecting, processing data and controlling the hardness tester when measuring the mechanical characteristics of metals according to the ball indentation diagram.

The control device provides the following set of functions:

- reception and conversion of analog and digital signals from sensors (with the ability to power sensors);

- calculation of unmeasured process parameters;

- auto-regulation according to given laws;

- blocking and protection by limiting values of technological parameters;

- the formation and issuance of analog and digital control signals to actuators;

- the ability to connect to an Ethernet network IEEE-802.3u (10/100 Mbit / s);

- the ability to exchange data via RS-232;

- the ability to archive data to a USB flash drive 1.1;

- functional control and diagnostics of hardware and software.

Structurally, the control device is located in the block frame in which the functional modules (MF) are installed.

The interaction of the central processor module (MCP) and the MF in the control device is carried out via the RS-485 serial interface.

The control device includes the following components:

- central processor module (MCP);

- functional module MF-11;

- functional module MF-12;

- module transitional type 4 (MP4);

- module transitional type 5 (MP5);

- transitional module МЦП1 (MP МЦП1).

Description

Technical field

This technical solution relates to control and regulatory systems for general use, namely, to process control tools.

State of the art

An analogue of the claimed technical solution, CONTROL, PROTECTION AND SIGNALING UNITS OF THE COMPRESSOR FILLING MODULE (patent for invention RU 2211471 C1, 12.28.2000, IPC 7 G05В 15/02, G07F 15/00), designed for automatic control, emergency warning and protection module compressor refueling.

The disadvantages of this analogue are small functionality, lack of reliability, non-seismic resistance of the structure.

Another analogue of the claimed technical solution is a COMPLEX of AUTOMATION GAS-PISTON ELECTRIC UNIT (patent for invention RU 2218587 C1, 06/18/2001, IPC 7 G05В 19/02, Н02Р 9/00), designed for automatic control and monitoring of the operation of a gas-piston electric unit in the process of starting checking, starting, frequency control, switching on and working on the load, normal and emergency stop, as well as to detect emergency and threatening situations in all operating modes of the unit

and responding to these situations. The basic computing element is a programmable controller.

The disadvantages of this analogue are limited functionality in terms of the number of monitored and controlled parameters and low reliability.

The closest analogue of the claimed technical solution (prototype) is the COMPLEX OF SOFTWARE AND HARDWARE AUTOMATION FOR MANAGEMENT OF TECHNOLOGICAL PROCESSES (patent for utility model RU 35902 U1, 10.27.2003, IPC 7 G05В 19/148, G05В 15/02), intended for construction on a turn-key basis, automated in various architecture and complexity levels, of automated process control systems at nuclear power plants and other industrial facilities.

1. The complex of software and hardware for automation of technological process control "PASSAT", containing the upper block level system (SSBU), consisting of personal electronic computers (PCs), and controllers connected by a local area network (LAN) Ethernet, characterized in that Each controller contains a central processor module (MP) and functional modules (MF) with a programmable structure, combined through the VME-bus system bus.

2. The automation software and hardware complex according to claim 1, characterized in that the functional module (MF) with a programmable structure comprises a VME-bus interface circuit, a signal processing and control circuit connected to a VME-bus interface circuit, I / O mezzanines variable quantities and structures connected through the first group of connectors to the signal processing and control circuit, and through the second group of connectors with external inputs / outputs of the functional module for connecting sensors and actuators.

3. The automation software and hardware complex according to claim 1, characterized in that in the configuration for operating in centralized control mode (for example, an atomic energy facility), the complex comprises a central processor module and functional modules with a programmable structure connected via the VME- system bus bus, functional modules contain VME-bus interface circuits, INPUT and OUTPUT circuits connected to the VME-bus interface circuit through the first group of outputs and inputs, and through connectors and the second group of inputs and outputs from group th inputs and outputs of the functional module for connecting sensors of actuators, respectively.

4. The software and hardware automation system according to claim 1, characterized in that in the local control configuration (for example, an atomic energy facility), the functional module (MF) with a programmable structure contains a VME-bus interface circuit, a logical control circuit interconnected , and the INPUTS and OUTPUT circuits connected through the first group of outputs and inputs respectively to the logic control circuit, and through the second group of inputs and outputs with the group of inputs and outputs of the functional module for connection, respectively of external sensors and actuators.

5. The automation software and hardware complex according to claim 1, characterized in that in the distributed control configuration (for example, an atomic energy facility), the complex comprises a central processor module and functional (MF) modules with a programmable structure connected via a VME-bus system bus moreover, each functional module contains a VME-bus interface circuit connected to a logic control circuit, and I / O circuits connected through the first groups of outputs and inputs to the inputs and outputs of the circuit logic control, and through the second group of inputs and outputs, respectively, with the group of inputs of the functional module for connecting sensors and a group of outputs for connecting actuators.

A disadvantage of the known analogue of the prototype is the lack of implementation of the specified specific functional characteristics necessary to implement control of a two-coordinate electric drive of the hardness tester and obtain results with the required accuracy.

Utility Model Essence

The well-known TWO-ORDINARY ELECTRIC DRIVE CONTROL DEVICE contains a central processor module (MCP) with an RS-485 interface unit and VGA, Ethernet, USB, keyboard (Keyboard) and a mouse-type manipulator (Mouse) and a power module connected to the primary network source ~ 220 V, outputting 24 V to the power bus.

The purpose of creating a utility model is to expand functional capabilities, increase control accuracy, and obtain acceptable weight and size characteristics.

To achieve this goal, the two-axis electric drive control device further comprises an electric drive control module, consisting of an RS-485 interface node, an engine driver node connected to two

electric motors, tachometer assembly, two inputs of which are connected respectively with two electric motors; a sensor module consisting of an RS-485 interface node, a signal receiving node, the first group of inputs and outputs of which are connected to proximity switches, the second group of inputs and outputs - with strain gauges and the third group of inputs and outputs - with an inductive converter.

List of figures, drawings and other materials

Figure 1 shows the structural diagram of a control device for a two-axis electric drive.

Figure 2 shows the location of the mezzanines on the functional module MF11.

Figure 3 shows the connection diagram of the signal and power circuits to the transition module MP4.

Figure 4 shows the location of the mezzanines on the functional module MF12.

Figure 5 shows the connection diagram of the signal and power circuits of the sensors to the transition module MP5.

Figure 6 shows a drawing of a control device (front view).

7 is a drawing of a control device (rear view).

Utility Model Execution Example

The control device of the two-coordinate electric drive (Fig. 1) contains a power module 1, a control module for the electric drive 2, comprising a logic module 3, an interface node 4, an engine driver assembly 5 and a tachometer assembly 6, a sensor module 7 comprising a power supply unit for sensors 8, an interface node 9 and a signal receiving unit 10, a central processing unit module 11 with an interface unit 12. In addition, Fig. 1 shows: 13 - power supply interface, 14 - RS-485 interface, 15 - inputs of the central processing unit, 16 - electric motor, 17 - proximity switch,18 - strain transducer, 19 - inductive transducer.

Description and work.

Purpose of the control device

The PASSAT-TM two-axis electric drive control device is designed to perform the functions of collecting, processing data and controlling the hardness tester when measuring the mechanical characteristics of metals according to the ball indentation diagram.

Specifications

The control device is a functionally complete product and contains the elements of control and signaling of failure.

The control device provides the following set of functions:

- reception and conversion of analog and digital signals from sensors (with the ability to power sensors);

- calculation of unmeasured process parameters;

- auto-regulation according to given laws;

- blocking and protection by limiting values of technological parameters;

- the formation and issuance of analog and digital control signals to actuators;

- the ability to connect to an Ethernet network IEEE-802.3u (10/100 Mbit / s);

- the ability to exchange data via RS-232;

- the ability to archive data to a USB flash drive 1.1;

- functional control and diagnostics of hardware and software.

Structurally, the control device is located in the block frame in which the functional modules are installed (hereinafter - MF).

The interaction of the central processor module (hereinafter - MCP) and the MF in the control device is carried out via the RS-485 serial interface.

The control device provides a MF polling cycle of no more than 1 ms.

The power supply of the control device is carried out from an alternating current main of voltage from 187 to 242 V with a frequency of (50 ± 1) Hz.

The power consumed by the control device is not more than 150 VA.

Overall dimensions - no more than 300 × 325 × 300 mm.

The mass of the control device is not more than 10 kg.

The control device by type of climatic modification belongs to the UHL4 category in accordance with GOST 15150-69, while it retains the appearance and performance under the influence of the following climatic factors:

- ambient temperature from plus 1 to plus 40 ° C;

- relative air humidity of 80% at plus 25 ° C;

- atmospheric pressure from 84.0 to 106.0 kPa (from 630 to 795 mm Hg).

The composition of the control device

The control device includes the following components:

- power supply unit 220 V (BP-220) - 1 pc.;

- central processor module (MCP) - 1 pc.;

- functional module MF-11 - 1 pc .;

- functional module MF-12 - 1 pc .;

- transitional module type 4 (MP4) - 1 pc.;

- transitional module type 5 (MP5) - 1 pc.;

- transitional module МЦП1 (MP МЦП1) - 1 pc.

Description and operation of components

MCP is designed to control the MF as part of the control device.

BP-220 is designed to convert AC voltage of 220 V into direct voltage plus 24 V, with a total output power of 200 watts.

BP-220 provides protection against overloads and short circuits.

Current consumption - no more than 2.7 A.

The control device provides:

- control of a two-axis electric drive;

- formation of signals for powering sensors;

- receiving signals from sensors;

- processing of measurement results in accordance with the control program.

The control device includes the following main functional units:

- power unit;

- electric drive control unit;

- sensor node;

- central processing unit.

The block diagram of the control device is shown in figure 1.

The electric drive control unit (MF-11) provides a reversible smooth change in the speed of rotation of the anchors of two electric motors in the range from 1 to 500 revolutions per minute, with an electric motor power of up to 60 watts.

The location of the mezzanines on the functional module MF11 is shown in figure 2.

Type and purpose of mezzanines:

- M1, M3, M4 - analog input mezzanine (MVA), designed to receive a tachometer signal of electric drive motors;

- M2 - digital TTL output mezzanine (MVVTTL MVVC), designed to control the direction of rotation of the armature of the electric drive motors and to receive the response signal of the protection of the drive control unit.

The supply voltage to the MF-11, the exchange of signals via the RS-485 interface with the MCP, the drive is controlled through a transitional module type 4 (MP4).

The connection of the signal and power circuits to the transition module MP4 is shown in Fig.3.

The drive control unit has the following types of protection:

- limitation of inrush current supplying motors;

- current overload (when the load current exceeds 30 A);

- shutdown during overheating (when the temperature of the motor driver housing is 165 ° C) and a reduced supply voltage (when the voltage of the motor driver is less than 5.5 V).

The sensor node (MF-12) provides power to external sensors and converts the signals coming from them into a digital code.

The number of external sensors includes: a load cell (type PS-10), an inductive displacement sensor (type 75501 or 75513), 2 load cells from electric motors, 4 inductive limit switches.

Sensors can be located up to 40 meters from the product.

The limits of the allowed basic reduced conversion error are not more than ± 0.3% (for tachometer signals - not more than ± 0.7%).

The location of the mezzanines on the functional module MF12 is shown in Fig.4.

Type and purpose of mezzanines:

- M1, M6 - digital input mezzanine (IEC), designed to receive the response signal of a proximity switch;

- M2 - analog input mezzanine (MVA), designed to power the strain gauge (Iap = 2 mA) and receive the strain gauge signal;

- M3 - analog input mezzanine (MVA), designed to receive a ± 5 V signal;

- M4 - detector mezzanine (MD), designed to receive the signal of the inductive converter;

- M5 - analog output mezzanine (MVVA), designed to generate an inductive converter power signal (sinusoidal signal with a frequency of 10 kHz).

The supply voltage to the MF12, the exchange of signals via the RS-485 interface with the MCP, the supply and reception of signals from the sensors is carried out through the transition module type 5 (MP5).

The connection of the signal and power circuits of the sensors to the transition module MP5 is shown in Fig.5.

MCP provides:

- control of electric motors;

- collection, processing and storage of data from sensors;

- setting indentation conditions and plotting indentation diagrams in accordance with the user program.

Device and work

MCP is installed in the far left place of the control device (Fig.6).

The interaction of the MCP and MF in the control device is carried out via the RS-485 serial interface.

The indicators “L”, “R”, “P” and “M” are located on the front panel of the MPC.

The initial state of the indicators located on the front panel of the MPC, when the power of the control device is turned on:

- indicators “L”, “R”, “M” - red;

- indicator “P” - green (if there is no power on the carrier module - there is no glow).

After loading the configuration data of the FPGA MCP, the indicator “L” is always green.

During normal operation, the “R” indicator changes the green glow with a frequency of ≈20 Hz.

In preparation for testing, the “R” indicator changes the green glow with a frequency of ≈5 Hz.

In the MCP test mode, the “R” indicator changes the glow from red to green with a frequency of ≈5 Hz.

If an error is detected, the “R” indicator changes the red glow with a frequency of ≈20 Hz.

On the front panel are indicators of the technical condition of the BP-220 power supply - “OVERLOAD”, “U OUT” and the “NETWORK” indicator.

On the back of the BP-220 power supply are two network sockets ~ 220 V, a 15 A fuse and a 24 V socket.

On the rear panel are connectors MP MPC1 “KEYBOARD”, “MOUSE”, “ETHERNET”, “USB” and “VGA”.

On the rear panel there are connectors “M1” and “M2” MP4 for connecting electric motors.

On the rear panel there is an MP5 “SENSORS” connector for connecting external sensors.

Industrial applicability

This utility model is industrially feasible, has the required functional characteristics, the necessary control and measurement accuracy, high reliability, low weight and dimensions.

Claims (1)

A two-axis electric drive control unit containing a central processor module (MCP) with an RS-485 interface node and VGA, Ethernet, USB, keyboard (Keyboard) and mouse-type manipulator connectors and a power module connected to the primary network source ~ 220 V, providing a voltage of 24 V to the power supply bus, characterized in that it further comprises an electric drive control module, consisting of an RS-485 interface unit, an engine driver assembly connected to two electric motors, a tachometer assembly, two inputs of which connected respectively with two electric motors; a sensor module consisting of an RS-485 interface node, a signal receiving node, the first group of inputs and outputs of which are connected to proximity switches, the second group of inputs and outputs - with strain gauges, and the third group of inputs and outputs - with an inductive converter.