JPH0666261A - Controller for automatic feed water system - Google Patents

Abstract

PURPOSE:To provide an automatic feed water system controller capable of preventing transmission of false signals while using pushbuttons in the selection of its operational mode. CONSTITUTION:In an automatic feed water system controller having an operational mode selecting portion 1 provided with pushbuttons 3, 4, 5, selection of either a manual or automatic operation mode by the pushbuttons 3, 5 is permitted only in a stopping mode. The direct shift between the manual and automatic operation modes is therefore impossible and is permitted only in the stopping mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an automatic water supply device, and more particularly, to an automatic water supply device having an operation mode selection section having push buttons corresponding to respective modes of manual operation, stoppage and automatic operation of a pump. The present invention relates to a device control device.

[0002]

2. Description of the Related Art A conventional automatic water supply controller is shown in FIG.
As illustrated in FIG. 2, a pair of changeover switches a and b are provided, and the changeover switch a for selecting an operation mode sends signals corresponding to each mode of manual operation, stop and automatic operation, and selects two pumps. Changeover switch b is pump A
It is configured to send a selection signal corresponding to single, a combination of pumps A and B, single rotation of pump B, and the like. Since these switches a and b are switched by turning operation, they are rarely inadvertently erroneously operated, but the size of the switch itself makes the device inevitably large.

[0003]

In order to reduce the size of the device, push-button type changeover switches can be considered instead of the above-mentioned rotary type changeover switches a and b. The risk of erroneous operation is high if only three push buttons corresponding to each of operation, stop, and manual operation are provided, and it is still insufficient to set the head of each button to the depressed position from the panel surface. It is also possible to install a lock mechanism that works with each button,
In addition, it requires a lock button, which makes the operation troublesome, and if you forget the lock operation, there is a risk of causing a serious accident that may affect human life.

The present invention has been made under the above circumstances, and an object thereof is to provide a control device for an automatic water supply device capable of surely preventing the transmission of an erroneous signal while using a push button for selecting an operation mode. To do.

[0005]

SUMMARY OF THE INVENTION The present invention provides a controller for an automatic water supply system having an operation mode selector having push buttons corresponding to respective modes of manual operation, stop and automatic operation of a pump. Both the manual operation mode and the automatic operation mode selected by the button are allowed only in the stop mode.

[0006]

In the above construction, the push button is prevented from shifting to the other mode between the manual operation mode and the automatic operation mode, and is allowed only in the stop mode.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in FIG. In addition, although the case where the target pump is two sets will be described below, the present invention is not limited to this. In FIG. 1, the control device for an automatic water supply device includes an operation mode selection unit 1 and a pump selection unit 2 for two sets of pumps A and B (not shown).

The operation mode selection unit 1 includes a manual operation mode, a stop mode,
It is provided with three sets of push buttons 3, 4, 5 corresponding to the respective modes of automatic operation. The push buttons 3 and 5 for each of the manual and automatic operation modes are connected to the main control unit 10 via the opening / closing elements 6 and 7 and the setting units 8 and 9, respectively.
The stop mode push button 4 is connected to the main control unit 10 via the setting unit 11. The switching elements 6 and 7 are closed signals (shown by broken lines) sent from the stop mode setting section 11.
The former 6 is opened in response to open signals sent from the automatic operation mode setting unit 9 and the latter 7 is opened from the manual operation mode setting unit 8.

The pump selecting section 2 is provided with push buttons 12 for sequentially sending selection signals corresponding to pump A alone, pump B alone, a combination of pumps A and B, and the like. The push button 12 is connected to the main control unit 10 via an opening / closing element 13 and a setting unit 14. And the switching element 1
3 is closed in response to a closing signal from the stop mode setting unit 11, and is opened in response to an open signal from the manual operation mode setting unit 8 or the automatic operation mode setting unit 9.

The main control unit 10 cooperates with, for example, a water tank, a feed water pressure detection unit, a feed water flow rate detection unit, a motor current detection unit, etc. (all are not shown) to select the pump selected by the pump selection unit 2. It is provided with means for controlling according to the operation mode selected by the operation mode selection unit 1.

In addition to the operation mode display section 15 for displaying the operation mode selected by the operation mode selection section 1 and the pump display section 16 for displaying the pump selected by the pump selection section 2, the main control section 10 has A digital type current display unit 17 that cooperates with the electric motor current detection unit, a pump status display unit 18 that displays the pump in operation and a pump that is out of order, and a water level display unit 19 that displays the water level of the receiving tank are connected. .

Further, a display control unit 20 is connected to the main control unit 10 as a support means for maintenance such as inspection and repair. The display control unit 20 includes a stop mode push button 4
A signal from the push button 12 of the pump selecting section 2 is input. Next, the operation of the above embodiment will be described.

In the stop mode in which the pumps A and B are stopped by pressing the stop mode push button 4, all of the pumps are stopped in response to a closing signal (shown by a broken line) sent from the stop mode setting section 11. The switching elements 6, 7, 13 are closed.

In this state, when the push button 3 for the manual operation mode is pressed, the main control section 10 is set to be manually operable in response to the signal sent from the setting section 8 and the setting section 8 outputs the signal. The open / close element 7 for automatic operation mode and the open / close element 13 for pump selection are opened according to the open signal. Therefore, even if the push button 5 for automatic operation mode and the push button 12 for pump selection are subsequently pressed, signals corresponding to these are not sent to the setting sections 9 and 14.

When the automatic operation mode push button 3 is first pressed in the stop mode, the main control unit 10 is set to the automatic operation mode in accordance with the signal sent from the setting unit 9. The open / close element 6 for manual operation mode and the open / close element 13 for pump selection are opened according to the open signal from the setting unit 9, and then the push button 3 for manual operation mode and the push button 12 for pump selection are pressed. However, the signals corresponding to these are not sent to the setting units 8 and 14.

Similarly, the pump can be selected by the push button 12 of the pump selecting section 2 only in the stop mode, and the selection in the manual operation mode or the automatic operation mode is not allowed.

Therefore, in the stop mode, if the pump is first selected by the push button 12 of the pump selecting section 2 and then the push button 3 or 5 of the operation mode selecting section 1 is pressed, manual operation can be performed. Or automatic driving is performed.

The operation mode display section 15 and the pump display section 16 respectively display the operation mode selected by the operation mode selection section 1 and the pump selected by the pump selection section 2. The electric motor operating current is displayed on the current display unit 17, and the pump status display unit 18 is displayed.
Shows the pumps that are actually running and any pumps that are out of order. The water level display section 19 displays the water level of the receiving tank.

An indicator light such as an LED provided on each of the display units is a signal sent from the display control unit 20 when the stop mode push button 4 and the push button 12 of the pump selection unit 2 are simultaneously pressed. By blinking in response, the presence or absence of an abnormality is confirmed. In addition, the current display unit 17
Displays the preset pump operation type (eg 01 for alternate operation, 02 for alternate / parallel operation) and motor rated output (eg 37 for 3.7kW) temporarily. It These temporary displays may be continued while both push buttons 4 and 12 are simultaneously pressed, or may be automatically stopped by a timer or the like after a predetermined time has elapsed.

As described above, in the above embodiment, the selection of the operation mode and the pump is allowed only in the stop mode, and the stop mode is not restored again after one of the push buttons is pressed. limit,
All selection signals from other push buttons are blocked. In other words, since all selections are allowed only in the stop mode, careless transmission of false signals is reliably prevented. It should be noted that the present invention is not limited to the above embodiments, and various modifications and applications are possible within the scope of the gist of the present invention.

[0021]

As described above, according to the present invention, it is possible to provide a control device for an automatic water supply device, which uses a push button for selecting an operation mode and can reliably prevent the sending of an erroneous signal. You can

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a front view showing a conventional example.

[Explanation of symbols]

1 ... Operation mode selection part, 2 ... Pump selection part, 3, 4, 5
... pushbuttons for operating mode selection, 6, 7, 13 ... open / close elements, 12 ... pushbuttons for pump selection, 15-19 ... display section, 20 ... display control section.

Claims (4)

[Claims] 1. A controller for an automatic water supply device having an operation mode selection unit having push buttons corresponding to respective modes of manual operation, stop and automatic operation of a pump,
The control device for an automatic water supply device, wherein selection of the manual operation mode and the automatic operation mode by the push button is allowed only in the stop mode. 2. When the pump selection unit provided in the operation mode selection unit has a push button for sequentially sending a pump selection signal, the selection of the pump by the push button is allowed only in the stop mode. The control device for the automatic water supply device according to claim 1. 3. A test means for blinking a preset indicator light when the push button corresponding to the stop mode of the operation mode selection section and the push button of the pump selection section are pressed at the same time. Control device for automatic water supply system. 4. A digital display section for displaying the drive motor operating current of the pump, and means for temporarily displaying the operation type, rated output, etc. of the pump on the digital display section in cooperation with the test means. The control device for the automatic water supply device according to claim 3.