JPH08328639A - Controller - Google Patents

Abstract

PURPOSE: To provide a controller in which an erroneous shipment can be surely avoided in a state that a function abnormality is occurred, the occurrence of the disadvantage caused by the malfunction based on an abnormality even when the shipment is erroneously performed and the safety in use can be improved. CONSTITUTION: In a controller in which plural control functions are provided and the plural control functions are separately or simultaneously inspected in each of plural inspection processes, an abnormality occurrence information holding means 102 holding the abnormality occurrence information on an inspection abnormality when the inspection abnormality is occurred in any inspection process of the plural inspection processes, an abnormality presence or absence discriminating means 103 discriminating whether the abnormality occurrence information holding means 102 holds abnormality occurrence information or not, and a working restraining means 104 restraining the workings based on the plural control functions when it is discriminated that the abnormality occurrence information holding means 102 holds abnormality occurrence information by the abnormality presence or absence discriminating means 103.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device having a plurality of control functions and inspecting a plurality of control functions individually or simultaneously in a plurality of inspection processes.

[0002]

2. Description of the Related Art Conventionally, in the above control apparatus, when a plurality of control functions are individually inspected in each of the plurality of inspection steps and an abnormality of the control function is detected in any of the inspection steps, The inspection operator in the inspection process repairs the abnormal control device or performs appropriate processing such as returning to the previous process, so that the control device with the abnormal function is not shipped accidentally. Was doing.

[0003]

However, in the inspection process in which the abnormality of the control function occurs, if the appropriate process as described above is not executed due to an error of the inspection operator, the following error is erroneously made. It is conceivable that the procedure will go to the inspection step. Then, if no abnormality in the control function is detected in the subsequent inspection process, the control device may be erroneously shipped even if there is an abnormality in the specific function.

Especially, when the inspection contents are complicated, the inspection is difficult to determine whether it is abnormal, or when the inspection operator is unfamiliar, the above-mentioned problems occur. Can be considered.

The present invention has been made by paying attention to such a point, and an object of the present invention is to obtain a function abnormality in a state where
It is possible to surely avoid accidental shipment, and even if it is accidentally shipped, it is possible to prevent disadvantages due to malfunction due to the above abnormality from occurring, and The point is to provide a control device capable of improving safety.

[0006]

The features of the first invention are as follows:
In a control device that has a plurality of control functions and in which a plurality of control functions are inspected individually or simultaneously in each of a plurality of inspection processes, an inspection abnormality occurs in any one of the plurality of inspection processes. When an error occurs, an abnormality occurrence information holding unit that holds abnormality occurrence information about the inspection abnormality, an abnormality presence / absence determining unit that determines whether the abnormality occurrence information holding unit holds the abnormality occurrence information, and that When it is determined by the abnormality presence / absence determining means that the abnormality occurrence information holding means holds the abnormality occurrence information, an operation restraining means for restraining the operation based on the plurality of control functions is provided. is there.

A characteristic configuration of the second invention is to specify a configuration suitable for carrying out the first invention, in which the abnormality occurrence information holding means holds the abnormality occurrence information by the abnormality presence / absence determining means. If it is determined that the notification is present, the notification means for executing the notification operation is provided.

The characteristic configuration of the third aspect of the invention specifies a configuration suitable for carrying out the second aspect of the invention, wherein the notifying means is
The notification operation is configured to notify the content of the inspection abnormality.

A characteristic configuration of the fourth invention is to specify a configuration suitable for carrying out the first, second or third invention, wherein the plurality of inspection steps are performed based on a command of a mode switching command means. Each is configured to be switchable between an inspection control mode for executing an inspection operation for the plurality of control functions and a normal control mode for executing a normal operation based on the plurality of control functions. While the presence / absence determining means determines that the abnormality occurrence information holding means holds the abnormality occurrence information, regardless of the command from the mode switching command means, the inspection control mode changes to the normal control mode. A mode switching restraint means is provided for restraining the switching to.

The characteristic features of the fifth invention are: the first, second, and third.
Alternatively, a configuration suitable for carrying out the fourth aspect of the invention is specified, and if the abnormality occurrence information holding unit holds the abnormality occurrence information on the basis of a command from the cancellation instruction unit, the holding state is canceled. The holding state releasing means is provided.

According to a sixth aspect of the present invention, a configuration suitable for carrying out the fifth aspect of the present invention is specified, wherein the release command means changes from the normal control mode based on the command of the mode switching command means. It is configured to issue an instruction when the control mode is switched to the inspection mode.

A characteristic configuration of the seventh invention is to specify a configuration suitable for carrying out the fifth invention, in which the release command means is configured to command based on an artificial operation. is there.

A characteristic structure of the eighth invention is to specify a structure suitable for carrying out the first, second, third, fourth, fifth, sixth or seventh invention, and as the control function. , The concentration of the unburned component contained in the combustion gas of the burner that heats the hot water heat exchanger is controlled by the unburned component concentration detection means, and the detection information of this unburned component concentration detection means On the basis of this, the control for determining the incomplete combustion of the burner is executed based on the above.

[0014]

According to the characteristic configuration of the first aspect of the invention, for example, when an inspection abnormality occurs in any one of the plurality of inspection steps, the abnormality occurrence information holding means provides the abnormality occurrence information about the inspection abnormality. Retained. And
Even when the inspection abnormality occurs in this way, even when the inspection step is erroneously advanced to the next inspection step, the abnormality occurrence information holding means causes the abnormality occurrence information holding means to detect the abnormality occurrence information in the next inspection step. It is determined whether or not is held, and if it is determined that the abnormality occurrence information is held,
The operation based on the plurality of control functions is restricted by the operation restriction means.

As a result, in the next inspection step, even if an operation based on the control function is executed in order to execute the inspection in the inspection step, the operation is restrained and the inspection cannot be executed. It is possible to recognize that the control function is abnormal in the process as well, and it is possible to prevent accidentally proceeding to the subsequent inspection process.

According to the characterizing structure of the second invention, the following function is provided in addition to the function of the characterizing structure of the first invention. When the abnormality presence / absence determining unit determines that the abnormality occurrence information holding unit holds the abnormality occurrence information, the notifying unit executes the notifying operation, so that the inspection abnormality occurs in the previous inspection process. The inspection operator recognizes that he / she has mistakenly proceeded to the next step.

According to the characterizing structure of the third invention, the following function is provided in addition to the function of the characterizing structure of the second invention. Since the content of the inspection abnormality is notified by the notifying unit, the inspection operator can determine which control function of the plurality of control functions the abnormality has occurred in the inspection process.

According to the characteristic configuration of the fourth invention, the first and second aspects are provided.
Alternatively, the following operation is provided in addition to the operation according to the characteristic configuration of the third invention. The inspection of each control function in each inspection process is executed in a state where the inspection control mode is switched based on the command of the mode switching means. Then, while the abnormality presence / absence determining means determines that the inspection abnormality occurs in any of the inspection steps and the abnormality occurrence information holding means holds the abnormality occurrence information, the command of the mode switching means is issued. Regardless of this, the switching from the inspection control mode to the normal control mode is restrained.

Therefore, even if the inspection abnormality occurs, even if the product is shipped by mistake, the switching to the normal control mode is restrained, so that the normal operation based on a plurality of control functions is executed. Therefore, the user can immediately determine that there is an abnormality.

According to the characterizing feature of the fifth invention, there is the following effect in addition to the effect of the characterizing feature of the first, second, third or fourth invention. When the abnormality occurrence information is held by the abnormality occurrence information holding means, for example, after the appropriate processing such as repair is performed and the state of the inspection abnormality is resolved, the holding state canceling means is set based on the instruction of the cancellation commanding means. ,
The holding state of the abnormality occurrence information in the abnormality occurrence information holding means is released. After the holding state is released in this manner, the abnormality presence / absence determining means determines that the abnormality occurrence information holding means does not hold the abnormality occurrence information.

Therefore, the operation check by the operation check means, the notification operation by the notification means, the check operation by the mode switching check means, etc. are not executed, and the operations based on a plurality of control functions can be executed.

According to the characterizing structure of the sixth invention, the following function is obtained in addition to the function of the characterizing structure of the fifth invention. Based on the command of the mode switching command means, the normal control mode is switched to the inspection control mode,
The holding state releasing means releases the holding state of the abnormality occurrence information in the abnormality occurrence information holding means.
That is, since the abnormality occurrence information holding unit releases the holding state of the abnormality occurrence information before the inspection control mode is switched to and the inspection in each inspection step is performed, for example, a pre-process such as a production process. Even if the information is erroneously held in, the inspection in each inspection step is executed in the state where the held state is reliably released.

According to the characterizing feature of the seventh invention, in addition to the function of the characterizing feature of the fifth invention, there is the following effect. By the command based on the manual operation, the holding state releasing means releases the holding state of the abnormality occurrence information in the abnormality occurrence information holding means. That is, when an inspection abnormality occurs in any of the inspection steps, after the appropriate processing such as repair is performed in the inspection step and the abnormality is resolved, the holding state is released by a command based on human operation, In the next inspection step, the abnormality presence / absence determining unit determines that the abnormality occurrence information holding unit does not hold the abnormality occurrence information, and can perform a normal inspection.

According to the characterizing feature of the eighth invention, there is the following effect in addition to the effect of the characterizing feature of the first, second, third, fourth, fifth, sixth or seventh invention. The concentration of unburned components contained in the combustion gas of the burner that heats the heat exchanger for hot water supply,
It has a control function of detecting by the unburned component concentration detecting means and controlling so as to determine whether or not the burner is in an incomplete combustion state based on the detection information of the unburned component concentration detecting means. Even when an inspection abnormality occurs in the inspection process of the control function, it is possible to avoid the disadvantage that the product is erroneously shipped in such an abnormal state.

[0025]

According to the characteristic constitution of the first invention, even if an inspection abnormality occurs in any of the inspection steps, even if the inspection step is mistakenly proceeded to the next inspection step, It is possible to avoid proceeding to the subsequent inspection process,
It is possible to avoid the disadvantage that the product is erroneously shipped in an abnormal state.

According to the characterizing feature of the second invention, the following effect is obtained in addition to the effect of the characterizing feature of the first invention. Even if an inspection abnormality occurs in the previous inspection process, the inspection operator recognizes that he / she has mistakenly proceeded to the next inspection process. It can be easily identified, and appropriate processing such as returning to the previous process can be immediately performed.

According to the characterizing structure of the third invention, the following effect is obtained in addition to the effect of the characterizing structure of the second invention. Since the inspection worker can determine which control function of the plurality of control functions has an abnormality in the inspection process, it is possible to determine what causes the operation is restrained, It is possible to avoid the disadvantage that it takes extra time to inspect other causes and to improve the efficiency of inspection work.

According to the characteristic configuration of the fourth invention, the first and second
Alternatively, there are the following effects in addition to the effects of the characteristic configuration of the third invention. Even if an inspection error occurs, even if the product is shipped by mistake, the user can immediately determine that it is abnormal and normal operation is restrained, so an error occurs. It is possible to avoid disadvantages such as a problem in use caused by an abnormal operation based on the control function.

According to the characterizing feature of the fifth invention, the following effect is obtained in addition to the effect of the characterizing feature of the first, second, third or fourth invention. Even if a detection abnormality occurs in any of the inspection steps and the abnormality occurrence information is temporarily held by the abnormality occurrence information holding means, for example, appropriate processing such as repair is performed and the inspection abnormality state is resolved. After that, by releasing the holding state, it is possible to perform an operation based on a plurality of control functions, and it is possible to perform an inspection in the next process or to perform a normal operation after shipping. It will be possible.

According to the characterizing feature of the sixth invention, the following effect is obtained in addition to the effect of the characterizing feature of the fifth invention. Since the inspection in each inspection step is executed in a state in which the abnormal state information holding means holds the abnormality occurrence information securely, despite the fact that the inspection in each inspection step is normal,
It is possible to avoid disadvantages such as restrained operation and restrained switching of control modes.

According to the characterizing feature of the seventh invention, the following effect is obtained in addition to the effect of the characterizing feature of the fifth invention. Even if an inspection abnormality occurs in any of the inspection steps, it is possible to continue the appropriate inspection in the subsequent inspection steps after the appropriate processing is executed.

According to the characterizing structure of the eighth invention, the following effects are obtained in addition to the effects of the characterizing structure of the first, second, third, fourth, fifth, sixth or seventh invention. Incomplete combustion determination based on the detection information of the unburned component concentration detection means The product was erroneously shipped with an abnormality in the inspection, and the incomplete combustion is properly determined in normal operation based on the control function. It is possible to avoid disadvantages such as being unable to do so and to ensure safety in use.

[0033]

Embodiments will be described below with reference to the drawings. FIG.
FIG. 1 shows a schematic configuration of a hot water supply device. This hot water supply device issues a command information to the hot water supply unit Y, a control unit H as a control device according to the present invention for controlling the operation of the hot water supply unit Y, and a control unit H. It is configured to include a remote control operation unit R and the like.

The hot water supply unit Y has a heat exchanger 2 for heating water in the combustion chamber 1, a burner 3 for heating the heat exchanger 2, ventilation air for the burner 3 and combustion of the burner 3. The heat exchanger 2 is provided with a fan 5 for discharging the gas to the outside through the exhaust passage 4, an igniter 6 for igniting the burner 3, a frame rod 7 for detecting whether or not the burner 3 is ignited, and the like. A water passage 8 and a hot water outlet 9 for supplying hot water after heating to a hot water tap (not shown) are connected to each other. The water inlet passage 8 is provided with a water inlet temperature sensor 10 for detecting the water inlet temperature and a water amount sensor 11 for detecting the water flow amount, and the hot water outlet passage 9 is provided with a hot water outlet temperature sensor 12 for detecting the hot water outlet temperature. Further, a fuel supply passage 13 for supplying fuel (gas) is connected to the burner 3, and an electromagnetically operated on-off valve 14 for connecting and disconnecting the supply of fuel to the fuel supply passage 13 and a fuel supply amount are changed and adjusted. A free solenoid proportional valve 15 is provided.

The remote control operating unit R is
An operation switch 16 for instructing on / off of hot water supply operation and a temperature setting switch 17 for instructing a target hot water supply temperature are provided, and
It is provided with a display unit 18 for displaying the hot water supply temperature and the like, an operation display lamp 19 which is lit when the operating state is reached, and an abnormality display lamp 20 which is lit when an operation abnormality occurs.

In the exhaust passage 4, a CO sensor 21 as unburned component concentration detecting means for detecting the concentration of CO (carbon monoxide) as an example of unburned component in the combustion gas of the burner 3.
Is provided, and the detection information of the CO sensor 21 is stored in the control unit H.
Is configured to be input to.

The control unit H is provided with a microcomputer and has a detected CO concentration equal to or higher than a set concentration based on the detection information of the hot water supply control means 100 for controlling the operation of each part of the hot water supply unit Y and the CO sensor 21. Burner 3
The incomplete combustion determination means 101 for executing post-processing such as stopping the combustion of the burner 3 is provided in a control program format.

Hot water supply control means 100 executes the following control in a normal use state of the hot water supply device. After the operation switch 16 is turned on, when the water flow rate detected by the water flow rate sensor 11 exceeds the set water flow rate by opening the hot water tap, ventilation by the fan 5 is started, and the open / close valve 1
4 and the solenoid proportional valve 15 are opened to start the ignition operation by the igniter 6, the burner 3 is ignited, and when ignition is confirmed by the frame rod 7, the ignition operation by the igniter 6 is ended. Next, the combustion control is executed so that the hot water outlet temperature becomes the target hot water supply temperature. That is, the incoming water temperature sensor 1
0, hot water temperature sensor 12, water amount sensor 11, detection information of the target hot water supply temperature set by the temperature setting switch 17 and the like, the combustion amount of the burner 3 is calculated, and the proportional solenoid valve is set to the combustion amount. The opening degree of the fan 15 is adjusted, and the rotation speed of the fan 5 is controlled so that the ventilation amount is suitable for the combustion amount. When the water flow rate detected by the water volume sensor 11 falls below the set water volume due to the closing operation of the hot water tap, the combustion of the burner 3 is stopped, and then the ventilation operation (post-purge) by the fan 5 is executed for a predetermined time. hand,
The hot water tap is in a standby state until it is opened again.

As described above, the control unit H has a plurality of control functions, and in the control operation in the normal hot water supply operation,
Each control function is executed based on the control procedure as described above.

The incomplete combustion discriminating means 101 controls the CO sensor 21 when the hot water supply operation is being executed as described above.
When the CO concentration detected by exceeds the set concentration, the ventilation path of the fan 5 is clogged with dust or the like,
The hot water supply control means 100 is configured to determine that the incomplete combustion state has occurred due to the intake air blockage or the exhaust gas blockage.
When such incomplete combustion is determined, the combustion of the burner 3 is stopped and the abnormality display lamp 20 is turned on.

In addition to the normal control mode for executing the normal control operation as described above, the control section H is only in the inspection process on the production line before being produced and shipped on the production line. The inspection control mode used is set. In the inspection process, a plurality of control functions such as those described above, such as an inspection for ignition / extinguishing operation for the burner 3, an inspection for changing adjustment of the rotation speed of the fan 5, an inspection for incomplete combustion determination operation, etc. The inspection is sequentially performed in the process, and the control unit H can be switched to the inspection control mode before entering such an inspection process.

The switching between the normal control mode and the inspection control mode is configured so that the inspection operator operates the mode changeover switch SW1, and the mode changeover switch SW1 is, for example, the casing of the water heater. It is arranged on a circuit board or the like arranged inside the unit so that a normal hot water supply user does not operate it after shipping.

More specifically, as shown in FIG. 2, the control unit H
In the control mode for inspection,
In any of the inspection steps of the plurality of inspection steps,
When an inspection abnormality occurs, an abnormality occurrence information holding unit 102 that holds abnormality occurrence information about the inspection abnormality, and an abnormality presence / absence determination unit that determines whether the abnormality occurrence information holding unit 102 holds the abnormality occurrence information. 103, when the abnormality presence / absence determining means 103 determines that the abnormality occurrence information holding means 102 holds the abnormality occurrence information, the operation restraining means 104 for restraining the operations based on the plurality of control functions, If the abnormality presence / absence determining means 103 determines that the abnormality occurrence information holding means 102 holds the abnormality occurrence information, the notifying means 105 executes an informing operation, and the abnormality presence / absence judging means 103 causes the abnormality occurrence information. While it is determined that the holding unit 102 holds the abnormality occurrence information, the mode changeover switch SW1 is operated. Regardless of the replacement operation, the mode change control means 106 for controlling the switching from the inspection control mode to the normal control mode, the abnormality occurrence information holding means 102 holds the abnormality occurrence information based on a release command. If so, each of the holding state releasing means 107 for releasing the holding state is provided.
The abnormality occurrence information holding unit 102 is configured by, for example, an electrically writable and erasable non-volatile memory (EEPROM), and is configured to hold abnormality occurrence information regarding the inspection abnormality. In addition, each of the above-mentioned means 1
03 to 107 are provided in the control unit H in a control program format.

Next, the procedure in each inspection step will be described with reference to the flowchart of FIG. If there is a mode switching command from the normal control mode to the inspection control mode by the switching operation of the mode switching switch SW1, the holding state releasing means 107 clears the holding information in the abnormality occurrence information holding means 102 (step 1,
2). In other words, in the production process up to that point, even when incorrect information is held in the abnormality occurrence information holding means 102, the held information is released and set to the initial state when the inspection is started. Therefore, the mode changeover switch SW1 corresponds to the release command means KS.

Then, the process inspection for any one of the plurality of control functions (or a plurality of functions) by the hot water supply control means 100 is executed (step 3). For example, if the burner 3 is to be checked for fire extinguishing operation, the on-off valve 1
4. The solenoid proportional valve 15 is opened and the burner 3 is ignited by the igniter 6, and the open / close valve 14 is closed to stop the combustion of the burner 3. Further, in the case of the inspection of the incomplete combustion determination operation, whether or not the incomplete combustion determination operation is executed by detecting the CO concentration that temporarily increases when the burner 3 is ignited by the CO sensor 21. To inspect. Then, in such inspection, for example, the burner 3
If the inspection abnormality such as the ignition is not confirmed by the flame rod 7 or the burner 3 is not ignited or the incomplete combustion is not detected despite the ignition operation to the Anomaly occurrence information holding means 102
Information on the inspection abnormality, for example, inspection items and details of the abnormality is stored and held (steps 4 and 5).

When the abnormality presence / absence determining means 103 determines that the abnormality occurrence information is held in the abnormality occurrence information holding means 102 (step 6), the operation check means 104 controls each function of the hot water supply control means 100. The operation based on (1) is restrained (step 7), and at the same time, the notification means 105 notifies that there is an abnormality (step 8). That is, the abnormality display lamp 20 in the remote control operation unit R is turned on, and the inspection item in which the abnormality has occurred and the content of the abnormality are displayed on the display unit 18. Therefore, if the inspection operator does not perform appropriate processing (repair, etc.) for the abnormality due to an error and proceeds to the next inspection step,
Since the operation based on the control function is restrained, proper inspection cannot be performed.

When the inspection abnormality as described above occurs, and thereafter, when an appropriate process such as repair is performed by the operator, a release command is issued by operating the release switch SW2 as another release command means KS. It is determined whether or not there is (step 9). The release switch SW2, like the mode changeover switch SW1, is arranged on a circuit board or the like provided inside the casing of the hot water supply device so that a normal hot water supply user does not operate it after shipping. . When there is a cancel instruction, the holding state canceling unit 107 clears the held information in the abnormality occurrence information holding unit 102 (step 10).

After that, if all the inspection steps have not been completed, the abnormality presence / absence determining means 103 determines whether or not the abnormality occurrence information holding means 102 holds the abnormality occurrence information. When the inspection of the process is performed and it is determined that the process is held, the operation based on each control function of the hot water supply control means 100 is restrained (steps 11 and 12). Then, Step 3 to Step 12 are repeatedly executed until the entire inspection process is completed.

In this way, the inspection is performed in a plurality of inspection steps, and if an inspection abnormality occurs in any of the steps, appropriate processing such as repair is performed. After the completion of all the inspection steps, if there is a command to switch from the inspection control mode to the normal control mode by the switching operation of the mode switch SW1 (step 13), the abnormality presence / absence determining means 103 causes
It is determined whether or not the abnormality occurrence information holding unit 102 holds the abnormality occurrence information. If not, the control mode is switched, and the normal control mode is switched (steps 14 and 15) and held. If it is determined that the mode switching control unit 106 is in control, the mode switching control unit 106 controls the switching to the normal control mode regardless of the operation of the mode switching switch SW1, and the notification operation by the notification unit 105 described above is executed. (Steps 16 and 17). Therefore, after the inspection process is completed, it is possible to determine whether or not the inspection abnormality occurs even when the mode changeover switch SW1 is operated.

Even when the re-inspection is performed, if the abnormality occurrence information holding means 102 holds the abnormality occurrence information, the operation based on each control function of the hot water supply control means 100 is restrained, If the abnormality occurrence information is not held, the process inspection can be performed (step 18).

When the switching to the normal control mode is restrained regardless of the operation of the mode changeover switch SW1, after appropriate processing such as repair is performed thereafter,
If a release command is issued by operating the release switch SW2, the holding state release means 107 causes the abnormality occurrence information holding means 1 to operate.
The retained information of 02 is cleared (steps 19 and 20),
After that, if instructed by the switching operation of the mode switch SW1, the mode is switched to the normal control mode (steps 13 to 15). In this way, all inspections are completed, and even if an inspection abnormality occurs, it will be shipped in a state where the abnormality has been resolved, and at the shipping stage, it will always be set to the normal control mode. .

[Other Embodiments] (1) In the above embodiment, when the abnormality presence / absence determining means 103 determines that the abnormality occurrence information is held in the abnormality occurrence information holding means 102, the inspection item and the abnormality are detected. Although the content or the like is notified, the abnormality display lamp 20 may be simply turned on or an alarm sound such as a buzzer may be generated instead of the information. Further, the configuration may be such that such notification operation is not executed.

(2) In the above embodiment, various inspections are executed in a state where the inspection control mode different from the normal control mode is switched, but only the normal control mode is provided.
When an abnormality occurs in the mode, the abnormality occurrence information holding unit 102 may hold the abnormality occurrence information. With this configuration, even if an operation abnormality occurs after shipping, the abnormality information is retained, and by obtaining the information during maintenance work such as repair and replacement, an appropriate response can be taken. Can be taken.

(3) In the above embodiment, the holding state is instructed to be released when the normal control mode is switched to the inspection control mode based on the command from the mode changeover switch SW1. Instead of such a configuration, a configuration may be adopted in which the release is only performed by the release switch SW2.

(4) In the above embodiment, the holding state releasing means 107 is provided, and the holding state of the abnormality occurrence information is released based on the instruction of the releasing instruction means KS.
Instead of such a configuration, the processing information may be held together with the abnormality occurrence information after an appropriate processing such as repair is performed. By doing so, there is an advantage that the past abnormality occurrence state can be discriminated at the time of maintenance and the like, and the response can be made more accurate.

(5) In the above embodiment, the abnormality occurrence information is stored in the abnormality occurrence information holding means 102 provided in the controller H.
However, instead of such a configuration, it may be configured to be retained and managed by an external management system that comprehensively manages the processes of the production line.

(6) In the above embodiment, the case of the control device for executing the control in the hot water supply device was illustrated, but the present invention is not limited to the control device for the hot water supply device, and in short, a control having a plurality of control functions. Any device may be used, and a control device used in any device can be applied, and the application is not limited.

(7) In the above embodiment, each of the above means 103
Although ~ 107 is provided in the control unit H in the form of a control program, for example, a shape memory alloy or the like may be used so as to be realized by a mechanical means.

It should be noted that reference numerals are added to the claims for facilitating the comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a hot water supply device.

FIG. 2 is a block diagram of a control unit.

FIG. 3 is a flowchart of the inspection procedure

[Explanation of symbols]

 2 Heat exchanger for hot water supply 3 Burner 21 Unburned component concentration detection means 102 Abnormality information holding means 103 Abnormality presence / absence determination means 104 Operation restraining means 105 Notification means 106 Mode switching restraining means 107 Holding state releasing means KS Release commanding means SW1 Mode switching Command means

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G05B 7/02 0360-3H G05B 7/02 Z 9/02 9/02 AL

Claims (8)

[Claims] 1. A control device having a plurality of control functions, wherein a plurality of control functions are individually or simultaneously tested in each of a plurality of inspection steps, wherein any one of the plurality of inspection steps is included. In the inspection process of
When an inspection abnormality occurs, an abnormality occurrence information holding unit (102) that holds abnormality occurrence information about the inspection abnormality, and whether or not the abnormality occurrence information holding unit (102) holds the abnormality occurrence information is determined. The abnormality presence / absence determining means (103), and the abnormality presence / absence determining means (103) determines that the abnormality occurrence information holding means (102) holds the abnormality occurrence information, the plurality of control functions And a control device (104) for controlling the operation based on the above. 2. An informing unit (105) for executing an informing operation when the abnormality presence / absence determining unit (103) determines that the abnormality occurrence information holding unit (102) holds the abnormality occurrence information. The control device according to claim 1, further comprising: 3. The control device according to claim 2, wherein the notification means (105) is configured to notify the content of the inspection abnormality as the notification operation. 4. An inspection control mode for executing an inspection operation for each of the plurality of control functions in each of the plurality of inspection steps based on a command from a mode switching command means (SW1), and the plurality of inspection modes. It is configured to be switchable to a normal control mode for performing a normal operation based on the control function of (3), and the abnormality occurrence determination means (103) causes the abnormality occurrence information holding means (102) to hold the abnormality occurrence information. While it is determined that the mode switching command means (SW1) is in effect, a mode switching check means (106) for checking the change from the inspection control mode to the normal control mode is provided. The control device according to claim 1, 2 or 3. 5. A holding state canceling means (107) for canceling the held state if the abnormality occurrence information holding means (102) holds the abnormality occurrence information on the basis of a command from a cancellation instruction means (KS). 5. The control device according to claim 1, 2, 3, or 4, further comprising: 6. The release command means (KS) is configured to issue a command based on a command of the mode switching command means (SW1) when the normal control mode is switched to the inspection control mode. The control device according to claim 5, which is provided. 7. The control device according to claim 5, wherein the cancellation instruction means (KS) is configured to issue an instruction based on a manual operation. 8. As the control function, the concentration of unburned components contained in the combustion gas of the burner (3) for heating the hot water supply heat exchanger (2) is detected by the unburned component concentration detection means (21). The control is executed, and the control for judging incomplete combustion of the burner (3) is executed based on the detection information of the unburned component concentration detecting means (21). The control device according to 2, 3, 4, 5, 6 or 7.