JPH0251701A - Controller containing temperature detecting mechanism - Google Patents

Abstract

PURPOSE:To reduce the maintenance cost and to ensure the high reliability for a controller containing a temperature detecting mechanism by automatically monitoring and controlling the ambient temperatures. CONSTITUTION:A central processing unit 6 works according to the contents of an OS program memory 5, and a temperature sensor 4 detects the ambient temperatures to send them to the device 6 after digitizing the detected temperatures. The unit 6 stores the error information into an abnormality detecting memory 7 in case the output value is outside the range of the working temperature. A user program 8 reads out the contents of the memory 7 and sends an abnormality signal to an output unit 10 via an input/output control memory 9. The abnormality signal is transmitted to an air conditioner 11 connected to the unit 10 to automatically keep the temperatures under a working range within a board.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a programmable control having a function of automatically detecting the temperature inside the device.

[Conventional technology]

Figure 4 shows a state in which a conventional programmable controller is housed in a control panel, where (1) is the control panel and (2) is the control panel.
) shows the stored program pull control, and (3) shows the thermometer.

Next, the operation will be explained. The internal temperature of the control panel (1) was controlled by the on-site maintenance personnel who measured whether it was within the operating ambient temperature range using a thermometer (3) installed inside the panel.

[Problem to be solved by the invention]

Therefore, the ambient temperature IIj had to be measured periodically, which placed a burden on the maintenance personnel.

Furthermore, when the temperature reached an abnormal level during the measurement period, the CPU was shut down, causing the machine to stop or malfunction.

This invention was made to solve the problems mentioned above.Automatic VC/l! iI Measures the ambient temperature and if the value of 7 falls outside the range of the measurement used, it will detect an abnormality of 7 and issue alarms and error information, as well as connect directly to the air conditioner and operate the temperature control device automatically. The purpose is to restore the temperature within the operating ambient temperature range.

[Means to solve all problems]

The temperature detection device according to the present invention has a built-in temperature sensor that automatically detects abnormal temperature and issues an alarm, or automatically restores the temperature within the operating ambient temperature range by linking with an external air conditioner. This is what I did.

[Effect]

In the temperature detection device according to the present invention, the analog value detected by the temperature sensor is input to the CPU, and abnormality information is outputted to the outside.

[Embodiments of the invention]

Hereinafter, a gold diagram as an example of this invention will be explained. 1st
The figure is a block diagram showing the operation of the programmable controller.

In FIG. 1, a p central processing unit (6) is operating according to the contents of an OS program memory (5). The temperature sensor (4) detects the entire ambient temperature, converts it into digital μ, and sends the data to the central processing unit (6).

The central processing unit (6) uses the passed value as W1, which is the operating temperature.
If an error occurs outside the range, error information is stored in the abnormality detection memory (7). Next, the user program (8) is stored in the abnormality detection memory (
The contents of unit 7 are read out and an abnormal signal is sent to output unit 1-C10 via input/output control memory (9).

This signal Fi is transmitted to the long-running air conditioner a, and the temperature inside the panel is automatically adjusted to within the operating ambient temperature range of m degrees.

In Figure 2, (1) is the control panel, <2) is the CPU of the programmable controller housed inside the ld control panel, Figure 3 is an enlarged view of the CPU (2), and (4) is the CPU of the programmable controller housed inside the control panel.
This is a temperature sensor attached to PU (2).

In addition, although the case where this was applied to a programmable controller was explained in the example, it may also be applied to equipment such as inverters, contactors, no-fuse breakers, computers, line controllers, etc. It has a similar effect.

〔Effect of the invention〕

As described above, according to the present invention, since the ambient temperature can be automatically monitored and adjusted, maintenance costs can be reduced and high reliability can be obtained.

[Brief explanation of the drawing]

Figure 1 shows the programmable controller vJ of this invention.
The production block diagram is shown. FIG. 2 shows a programmable controller housed in a panel according to an embodiment of the present invention. Third
The figure is an enlarged view of the programmer gel control. FIG. 4 shows a programmer gel controller housed in a board showing a conventional embodiment. In the figure, (1) is the Fi control panel, (2) is the CPU of the programmable controller housed inside the control panel, and (4) is the C
Shows the temperature sensor installed in PUK. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] It is characterized by having a function of having a temperature sensor inside, detecting temperature abnormality based on the output signal of the temperature sensor, and giving a signal to a temperature regulator to maintain the temperature inside the control device within a certain range. A control device with a temperature detection mechanism.