KR200357465Y1 - Temperature and humidity controller with plc function - Google Patents

Abstract

The present invention transfers various input / output and arithmetic functions of PLC to temperature and humidity controller.

All information of I / O and data between PLC and temperature / humidity controller

Share and increase the processing and utilization of I / O and data to users

The purpose is to provide convenience.

(Touch screen) monitor 10 for setting and monitoring temperature and humidity, and for controlling temperature and humidity

A temperature and humidity control board 11 and a logic operation control board 12 that executes logic operation control and

Characterized in that the output board 13 for driving the instrumentation control panel 14, etc.

do. This temperature and humidity controller has a higher input / output than the existing temperature and humidity controller.

And the utilization of data is convenient.

Description

PLC Function-Temperature and Humidity Controller {TEMPERATURE AND HUMIDITY CONTROLLER WITH PLC FUNCTION}

The present invention is a temperature and humidity chamber control, Figure 1 is a conventional general embodiment 1

All inputs and outputs of all functions are drawn from the controller.

Select only inputs and outputs and draw wires to the instrumentation control panel.

Install as many small-signal relays or solid-state relays as many as this output.

MG (electrical contactor) who wants to finally turn ON / OFF through these relays

Or SOLENOID (electronic valve), etc. ON / OFF, where if

If you want a combined output not prepared by the controller's maker,

Combining two or more signals drawn from the controller

You need to use a solid state relay to configure the logic.

After combining the difficult and small signal relays,

MG (electric contactor) or SOLENOID (electromagnetic valve) or pump motor as output

The instrument control panel becomes complicated because the lamp is turned on / off.

2 is a conventional general embodiment 2 as a few output relays or

Install a solid-state relay and give it a number for each output

(Example: DO1, DO2…) Input also installs a small number like this and then

Number (e.g. DI1, DI2…) and input or

The output function will be set in software. (E.g. DO1 = END

If set, DO1 output can be used as END output.)

Here, too, if you don't have a controller maker

If you want output, combine two or more signals from controller.

You need to create a new signal, and you need a solid state to construct the logic.

It is difficult to use relays and it is necessary to combine several small signal relays.

After the logic has been created, this output can be used as an MG (electrical contactor) or SOLENOID (electronic side).

The instrument control panel becomes complicated because the lamp is turned on / off.

Example 1: If you want to use the auxiliary heater only for temperature rise section,

Logically AND the temperature range setting output to the auxiliary heater output.

Should be.

Example 2: Temperature drop if you want to use a subcooler only in temperature drop section

The output and the temperature range setting output are logic ANDed to convert the output to an auxiliary refrigerator.

Should be output

The present invention was created to solve the above problems. First, the PLC (PROGRAMMBLE LOGIC CONTROLLER) consists of a power supply unit, a computing unit (CPU), a memory unit, an input / output unit (I / O), and the like. The user programs through a computer or the like how the user processes and calculates data or signals input from the input unit, and outputs the result. The result is output to the output unit. When we get the results we want. The calculator has a number of timers and counters, as well as numerical and logical operations, and various other functions. The present invention shares the internal data or signals of the temperature and humidity controller 10 with the logical operation board 12 and this information. Its purpose is to provide the convenience by processing them through an arithmetic function and outputting them to an output device, etc., without the need for complicated relay wiring. PLC board can read the temperature simply by reading the temperature buffer command.The calculator converts this data into 7 segment data that can display the number and outputs it to the output. The segments can be turned on to indicate the temperature. Humidity can also be displayed in the same way as above.In addition, the PLC function has a counter function.If you install a sensor that detects the product at the input unit, this signal turns on whenever the product passes and displays the number of products. In addition, it is possible to program various convenient functions such as setting temperature and setting humidity automatically when the quantity of the product is more than enough.In addition, the PLC function has a timer function, which delays all input / output operations. The PLC function-mounted temperature / humidity controller has high utilization, easy input / output expansion, and the PLC operation unit handles the logic wiring that is implemented by relay wiring, simplifying parts and wiring.

Until now, internal data and signals of temperature and humidity controller

It was unique to the temperature and humidity controller manufacturer,

By connecting various input / output and arithmetic functions of PLC to temperature and humidity controller

All information of I / O and data between PLC and humidity controller

Share and increase the processing and utilization of I / O and data to users

The purpose is to provide convenience.

1 is a configuration diagram of a general temperature and humidity controller 1

2 is a block diagram of a general temperature and humidity controller

3 is a block diagram of a temperature and humidity controller according to the present invention 1

4 is a block diagram of a temperature and humidity controller according to the present invention 2

<Description of the code>

10. . . Temperature and humidity controller

11. . . Temperature and humidity control board

12. . . Logical operation control board

13. . . Output board

14. . . Instrument Control Panel

15. . . Humidity & Logic Operation Control Board

In general, in the control of temperature and humidity, various signals are required in humidifying water and freezer control. For example, in a certain range of temperature and humidity, it can be an in-range output or a time signal that controls a particular chiller, or these signals can be combined in multiple forms to produce a specific output. Despite these necessity, however, until now, internal data and signal information of the temperature and humidity controller was unique to the temperature and humidity controller manufacturer, and the output is a single function type, which must be combined by the user. 1 is a conventional general embodiment 1 equipped with a number of terminals of digital inputs and outputs expected to be used in the controller, and selects only the necessary inputs and outputs of the inputs and outputs to the instrumentation control panel 14 to the output from the instrumentation control panel 14 After installing as many relays or solid-state relays as appropriate, the MG (electric contactor) is driven to turn on / off the final refrigerator or solenoid valve.Therefore, many digital inputs and outputs are prepared. It is a method to selectively use necessary input / output during the process. In this case, it is necessary to make a new signal by combining two or more signals drawn from the controller.It is difficult to use a solid state relay in order to construct the logic, and make the necessary logic by combining several auxiliary relays. Instrument contact panel is complicated because electric contactor), solenoid, pump motor, freezer etc. are turned on / off. For example, if you want to use auxiliary heater only in temperature rise section, Since the auxiliary heater should be driven in the condition that the above two conditions are satisfied at the same time because it is in a specific temperature range, the contact of these relays is connected in series after installing temperature rise output relay and temperature range setting output relay. This output drives the SSR (Solid State Contactor) or MG (Electric Contactor) for auxiliary heater output. Auxiliary heaters should be connected. Fig. 2 is a conventional general embodiment 2, in which an appropriate output relay (e.g. 10 outputs) or a solid state relay is installed on an output board, and each output number is numbered (e.g. DO1, DO2). …) Inputs are also set up with the appropriate numbers (e.g. 10 inputs) and then numbered for each input (e.g. DI1, DI2…). It is set by software of initial set. (Ex: DO1 = RUN If you set this, DO1 output can be used as RUN output.) Similarly, when DI1 = 'Fault input 1', DI1 input is 'Fault input'. Here, if it is necessary to make a new signal by combining two or more signals drawn from the controller, it is difficult to use a solid state relay to construct the logic, After making the necessary logic, these relays drive SSR (Solid State Contactor) or MG (Electric Contactor) and turn ON / OFF the final freezer or solenoid (SOLENOID). If you want to use the subcooler, the temperature drop output relay and the temperature range setting output are required because the sub-cooler must be operated at the same time when the temperature falls and the temperature range setting condition (since it is a specific temperature range rather than the whole area) at the same time. After the relays are installed, the contacts of these relays are connected in series (logical AND) to drive the MG (electrical contactor) for the auxiliary chiller output with this output and to connect the auxiliary chiller to it. Although few digital inputs and outputs can be prepared and used efficiently, they have the following problems: 1). As mentioned above, if you use two or more functions in combination, you have no choice but to use multiple outputs. In the temperature / humidity controller 10, the input is DC12V or DC24V level, and the ON / OFF of the final refrigerator is MG (electric contactor) or the like, and their driving is AC220V level. If necessary, the wiring should be done as described below (1). Use a multi-contact auxiliary relay for all digital inputs, drive this relay with digital inputs, one of the contacts of the relay is routed to the digital inputs from the temperature and humidity controller 10, and the other contacts are connected to the digital output relay and the MG (electric contactor). Logic wiring (2). Logically wire the digital input / output of the external fault input and the temperature / humidity controller 10, install a relay driven by DC voltage at this output, drive the final MG (electric contactor), etc., through this contact point, and connect a freezer to the drive. As a result, more output relays are used, more relays must be used, and as input / output conditions become more, the amount becomes larger. In both cases, the number of auxiliary relays increases and the wiring becomes complicated.

PLC function mounting according to the present invention to achieve the above object

The temperature and humidity controller is used for setting and monitoring data in FIG. 3.

(Touch screen) A / D conversion to make monitor 10 and temperature and humidity into data

Temperature and humidity control board 11 to match the function and the set temperature and humidity,

Logic operation control board 12 for logic and data operation, and logic operation control

To transfer the given signal from the board 12 to the instrumentation control board 14

To the instrumentation control panel 14 composed of an output board 13 and an MG (electric contactor)

It is composed.

Here, the temperature and humidity control board 11 is all generated every control cycle

Information is transmitted to the logic operation control board 12 and the logic operation control board 12

Based on the data collected by the user

Machining, deformation and calculation are then sent to the output device.

4 shows the temperature and humidity control board 11 and the logic operation control board 12 as one.

A configuration executed by the temperature / humidity & logic operation control board 15 is shown.

Your program can be programmed in two ways:

One). (Touch screen) User program the controller on the monitor (10) screen

Switch to mode, then set by touch and program.

2). (Touch screen) Monitor 10 and PC (computer) and communication line (RS232C or

RS485, etc.) and run the software on a PC (computer)

After programming, the program can be displayed on the (touch screen) monitor (10).

Until now, internal data and signals of temperature and humidity controllers were unique to the temperature and humidity controller manufacturers.However, this information is provided to the user through the PLC function, and various input / output and operation functions of the PLC are connected to the temperature and humidity controller to connect the PLC to By sharing all the information of I / O and data among the controllers, the user can increase the processing and utilization of I / O and data to provide convenience to the user, thereby reducing the number of output relays and auxiliary relays and simplifying wiring. Although a separate PLC is used for the operation of the equipment mounted inside the temperature / humidity chamber, cost saving is possible because there is no need to use a separate PLC.

Until now, internal data and signals of temperature and humidity controller

It was unique to the temperature and humidity controller manufacturer,

Providing to user through PLC function, various input / output of PLC and

By connecting the calculation function to the temperature and humidity controller, between the PLC and the temperature and humidity controller

By sharing all information of I / O and data,

Provide convenience to users by increasing processing and utilization,

For the operation of equipment installed inside the existing temperature and humidity chamber,

There is no need to use PLC, and the expansion of input / output is free.

Claims (1)

(Touch screen) monitor 10 for setting and monitoring the temperature and humidity, temperature and humidity control and Consists of a control board 15 for executing logical operation control and an input / output board, etc. On the controller, designed on the controller screen or via a personal computer According to the program generated from the input device and the humidity control board 11 Numerical and logical operations can be performed by referring to all numerical and digital signals. It is a structure that can transmit the result generated by the execution to the output device. Temperature and humidity controller with PLC function