Control system for water supply apparatus

Abstract

To provide a control system capable of preventing starting of a pump of a water supply device not intended by a worker.SOLUTION: The control system is provided in the water supply device 1, and includes a control device 40 for controlling operations of the pump 2 and the driving machine 3, and a display device 63 configured to transmit and receive data to and from the control device 40 in a wired or wireless manner. The control device 40 is configured to be able to switch the operation mode of the pump 2 between a machine-side operation mode in which the operation of the pump 2 is controlled based on an indicator start / stop signal transmitted from the indicator 63 and an automatic operation mode in which the operation of the pump 2 is controlled based on a start / stop signal transmitted from a device different from the indicator 63. The display device 63 has an operation selection button 73 for selecting the operation mode of the pump 2 between the automatic operation mode and the machine-side operation mode, and the control device 40 prohibits the activation of the pump 2 until the selection of the operation mode of the pump 2 is completed after the operation selection button 73 is pressed.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a control system for controlling the operation of a water supply device. [Background technology]

[0002] Water supply systems are installed in buildings such as apartment complexes and buildings, and are used to supply water to each water supply terminal (for example, faucets). Alternatively, water supply systems may supply water to fire extinguishing equipment such as sprinklers. Water supply systems have a control device that controls the operation of a pump to transport water. Water supply systems may also have an inverter for variable-speed operation of the pump. Such water supply systems are lifeline facilities that supply water within buildings, and therefore must always operate reliably. For this reason, maintenance or operation checks must be performed regularly. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-105389 [Patent Document 2] Japanese Patent Publication No. 2022-029283 Summary of the Invention [Problem to be solved by the invention]

[0004] One example of an operating mode for operating a water supply apparatus is a "local operating mode" in which an operator or user (hereinafter simply referred to as "operator") starts and stops the pump by directly operating the control device of the water supply apparatus or by an operator sending an operating signal to the control device from near the water supply apparatus. "Local operating mode" is an operating mode used, for example, during maintenance, and is basically an operating mode operated directly by an operator. Another example of an operating mode for a water supply apparatus is an "automatic operating mode" in which the pump is started and stopped based on operating signals from various sensors installed inside the water supply apparatus or based on operating signals sent from a remote location away from the water supply apparatus. "Automatic operating mode" includes forced operation, such as an "emergency operation input" sent from outside the water supply apparatus. The "emergency operation input" signal is a signal to forcibly operate the water supply apparatus, and is input to the control device, for example, when a fire breaks out in the building where the water supply apparatus is located and it becomes necessary to forcibly supply water from the water supply apparatus to the fire extinguishing equipment.

[0005] When performing maintenance on a water supply system or installing a water supply system in a building for the first time, workers check the operation of the water supply system. If a pump start signal is input to the water supply system's control device at this time and the pump starts up regardless of the worker's intention, there is a risk that the water supply system will break down.

[0006] Therefore, the present invention provides a control system that can prevent the pump of a water supply device from being started unintentionally by an operator. [Means for solving the problem]

[0007] In one aspect, a control system is provided for controlling the operation of a water supply device having at least a pump and a drive machine for driving the pump, the control system comprising: a control device provided in the water supply device for controlling the operation of the pump and the drive machine; and a display configured to be able to send and receive data with the control device via wired or wireless communication, the control device being configured to be able to switch the operation mode of the pump between a machine-side operation mode in which the operation of the pump is controlled based on a display start / stop signal transmitted from the display, and an automatic operation mode in which the operation of the pump is controlled based on a start / stop signal transmitted from a device other than the display, the display having an operation selection button for selecting the operation mode of the pump between the automatic operation mode and the machine-side operation mode, and the control device prohibits the start of the pump from the time the operation selection button is pressed until the selection of the operation mode of the pump is completed.

[0008] In one aspect, the display has an operating status display unit that displays the operating status of the pump, and the operating status display unit includes a start signal display that indicates whether a start signal for the pump has been input to the control device, a contact information display that indicates the setting of the contact used when starting the pump, and a contact status display that indicates the status of the signal input from the contact to the control device. In one aspect, the control device causes the display to display an operation standby display indicating that startup of the pump is not permitted from the time the operation selection button is pressed until the selection of the operation mode of the pump is completed. In one aspect, the display further has an operation permission button for permitting the start of the pump device after the operation mode of the pump is selected, and the control device controls the operation of the pump in the operation mode of the pump selected by the operation selection button after the operation permission button is pressed.

[0009] In one aspect, after the operation permission button is pressed, the control device causes the display to display a parameter confirmation display to confirm whether the target values ​​of the parameters required for operation of the pump are normal. In one aspect, when the target value is not set, the control device causes the display device to display an operation standby display indicating that activation of the pump is not permitted. [Effects of the Invention]

[0010] The control device cancels the start of the pump even if it receives a pump start command until the operator intentionally selects the pump operation mode. Therefore, it is possible to effectively prevent the operator from starting the pump unintentionally. In other words, this control system helps prevent erroneous operation of the pump. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a schematic diagram showing a water supply device according to one embodiment. [Figure 2] FIG. 2 is a schematic diagram showing a display device according to one embodiment. [Figure 3] FIG. 3 is a schematic diagram showing an example of the display unit after the operation selection button is pressed. [Figure 4] FIG. 4 is a schematic diagram showing a display device according to another embodiment. [Figure 5] FIG. 5 is a schematic diagram showing an example of the operation confirmation display. [Figure 6] FIG. 6 is a schematic diagram of a display device according to yet another embodiment. [Figure 7] Figure 7(a) is an enlarged view showing a schematic example of an operation status display unit when a pump start signal is input to the control device, and Figure 7(b) is an enlarged view showing a schematic example of an operation status display unit when a pump start signal is not input to the control device. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a schematic diagram showing a water supply device according to one embodiment. As shown in Fig. 1, the intake port of the water supply device 1 is connected to a water pipe 4 or a water tank (not shown). The discharge port of the water supply device 1 is connected to a water supply pipe 7, which communicates with a water supply terminal (e.g., a faucet) on each floor of the building. The water supply device 1 pressurizes water from the water pipe 4 or the water tank and supplies the water to each water supply terminal of the building.

[0013] A direct-coupled water supply device 1 in which a pump is directly coupled to a water pipe 4 includes a pump 2, a motor 3 as a drive device for driving the pump 2, an inverter 20 as a frequency converter for variably driving the motor 3, and a control device 40 that controls the operation of the pump 2 and / or the inverter 20. The pump 2, motor 3, inverter 20, and control device 40 constitute a pump device 100. In one embodiment, the inverter 20 may be omitted.

[0014] The water supply apparatus 1 further includes a backflow prevention device 25 arranged on the suction side of the pump 2, a pressure sensor (suction side pressure sensor) 21 arranged on the suction side of the backflow prevention device 25, a strainer 50 arranged on the suction side of the backflow prevention device 25, a check valve 22 arranged on the discharge side of the pump 2, a pressure sensor (discharge side pressure sensor) 26 arranged on the discharge side of the check valve 22, a flow switch 24, and a pressure tank 28. These components are housed in a cabinet 30 of the water supply apparatus 1. Note that there are also types of water supply apparatuses that do not include the cabinet 30.

[0015] A suction pipe 5 is connected to the suction port of the pump 2, and a discharge pipe 32 is connected to the discharge port of the pump 2. A bypass pipe 8, which supplies water using only the pressure of the water pipe 4, is installed between the suction pipe 5 and the discharge pipe 32, and a check valve 23 is installed in the bypass pipe 8. In this embodiment, two sets of the pump 2, motor 3, check valve 22, and flow switch 24 are installed in parallel. Note that one or more sets of pumps, motors, check valves, and flow switches may be installed. In a direct-connection type water supply system, as shown in FIG. 1, the pump 2 is connected to the water pipe 4 via the suction pipe 5. In a water-tank type water supply system, the pump 2 is connected to the water tank via the suction pipe 5. In this water-tank type water supply system, the backflow prevention device 25, suction-side pressure sensor 21, and bypass pipe 8 shown in FIG. 1 are not installed.

[0016] The check valve 22 is provided in the discharge pipe 32 and prevents backflow of water when the pump 2 stops. The flow switch 24 is a flow rate detector that detects when the flow rate of water flowing through the discharge pipe 32 drops to a predetermined value. The pressure sensor 26 is a water pressure measuring device for measuring the discharge side pressure (i.e., the back pressure applied to the water supply device 1). The pressure tank 28 is a pressure retainer for maintaining the discharge side pressure while the pump 2 is stopped.

[0017] When water is used in a building while the pump 2 is stopped, the discharge side pressure of the pump 2 drops. When this discharge side pressure, i.e., the output value of the pressure sensor 26, drops to a predetermined start-up pressure value, the control device 40 starts the pump 2. While the pump 2 is operating, pressure control such as estimated constant terminal pressure control or constant discharge side pressure control is performed based on the output value of the pressure sensor 26 (i.e., the discharge side pressure value). In one embodiment, the control device 40 may control the operation of the pump device 100 so that a constant amount of power is supplied from the inverter 20 to the motor 3. Note that if the inverter 20 is omitted, the control device 40 only controls the start and stop of the pump 2.

[0018] When water use in a building is stopped, the flow rate of water discharged from pump 2 decreases. When flow switch 24 detects that the flow rate of water from pump 2 has decreased to a predetermined value, it sends a flow rate decrease signal to control device 40. When control device 40 receives this flow rate decrease signal, it issues a command to inverter 20 to increase the rotation speed of pump 2 until the discharge side pressure reaches a predetermined stop pressure, and then stops pump 2.

[0019] 1, the control device 40 includes a memory 60 in which control programs and various data are stored (memorized), a processor 61 that performs calculations in accordance with the various control programs stored in the memory 60, a timer 62 connected to the processor 61, an external communication unit 64 that can send and receive data to and from an external terminal 63 and an external device 68, and a screen display unit 65 that can display the status of the water supply device 1 including the pump device 100 and perform various operations. An example of the external device 68 is a central control device that manages the status and / or operation of various devices installed in a building, including the water supply device 1.

[0020] External communication unit 64 may be configured to be connectable to cloud server 66, which provides a service for sending and receiving data via a network. External terminal 63 and external device 68 can access cloud server 66, and workers can check the status of water supply device 1 and perform various operations through external terminal 63 and external device 68. Naturally, external terminal 63 and external device 68 can send and receive data directly to external communication unit 64 via wireless communication or wired communication.

[0021] In this embodiment, the water supply apparatus 1 is normally operated in an automatic operation mode in which the start and stop of the pump 2 is controlled based on the measurements of various sensors, such as the flow switch 24 and pressure sensor 26, provided in the water supply apparatus 1. Furthermore, the automatic operation mode of the water supply apparatus 1 includes starting and stopping the pump 2 in response to an emergency operation signal from an external device 68, and starting and stopping the pump 2 in response to a scheduled operation signal from the external device 68. The emergency operation signal is a signal input to the control device 40, for example, when a fire breaks out in a building in which the water supply apparatus 1 is installed and water is forcibly supplied from the water supply apparatus 1 to a fire extinguishing equipment such as a sprinkler. The scheduled operation signal is a signal input to operate the water supply apparatus 1 periodically to check for any malfunctions, such as breakdowns. Operation of the water supply apparatus 1 in response to such scheduled operation signals is sometimes referred to as scheduled operation.

[0022] In this specification, the flow switch 24 and various sensors such as the pressure sensor 26 provided in the water supply device 1, and the external device 68 correspond to devices different from the display 63 that send start / stop signals to the control device 40 when the automatic operation mode is selected.

[0023] When performing maintenance or when the water supply apparatus 1 is first installed, a worker will check the operation of the water supply apparatus 1. Furthermore, the worker may also check the operation of the water supply apparatus 1 after maintenance has been performed. If the pump 2 starts or stops at a time unintended by the worker at this time, the water supply apparatus 1, and in particular the pump apparatus 100 including the pump 2, may be damaged. Therefore, to prevent damage to the water supply apparatus 1, the worker can forcibly prohibit the pump 2 from starting or stopping by directly operating the control device 40 or by operating the external terminal 63.

[0024] The following describes an example in which the start and stop of the pump 2 is controlled by operating the external terminal 63. Furthermore, the following describes an example in which the external terminal 63 is a smartphone connected to the control device 40 via short-range data communication such as Bluetooth (registered trademark). However, the type and configuration of the external terminal 63 are not limited to this example as long as it can be connected to the control device 40 so as to be able to send and receive data via a wired or wireless connection. For example, the external terminal 63 may be a mobile terminal such as a tablet or notebook personal computer. In this specification, the external terminal 63 corresponds to a display that can control the operation of the water supply device 1 by being connected to the control device 40, and therefore the external terminal 63 will be referred to as the "display 63" below.

[0025] Fig. 2 is a schematic diagram showing a display according to one embodiment. The display 63 shown in Fig. 2 is a smartphone, and has a touch panel display unit 70 on its surface. The display 63 has a start button 71 and a stop button 72 for starting and stopping the pump 2 when the operation mode of the pump 2 is selected as the on-machine operation mode using the operation mode selection button described below. The start button 71 and the stop button 72 are displayed on the display unit 70.

[0026] Furthermore, the display 63 has an operation selection button 73 for selecting an operation mode for starting and stopping the pump 2, and the operation selection button 73 is also displayed on the display unit 70. When an operator presses the operation selection button 73, the control device 40 connected to the display 63 prohibits the starting and stopping of the pump 2. In other words, the operation selection button 73 corresponds to a button that forcibly cancels control over the operation of the pump 2.

[0027] For example, when the operation selection button 73 is pressed, the control device 40 does not start or stop the pump 2 even if a signal for starting or stopping the pump 2 based on measurements from various sensors such as the flow switch 24 and the pressure sensor 26 is input. Furthermore, in this embodiment, when the operation selection button 73 is pressed, the control device 40 is configured not to start or stop the pump 2 even if the above-mentioned emergency operation signal and regular operation signal are input.

[0028] As shown in Fig. 2, the currently selected operation mode may be displayed on the operation selection button 73. Fig. 2 shows an example in which the operation mode of the pump 2 is selected as the machine-side operation mode.

[0029] FIG. 3 is a schematic diagram showing an example of the display unit after the operation selection button 73 is pressed. As shown in FIG. 3, when the operation selection button 73 is pressed, a display is displayed on the display unit 70 that allows the operator to select the operation mode of the pump 2 of the water supply device 1 between the local operation mode and the automatic operation mode. Specifically, a group of buttons including at least the local operation button 74 and the automatic operation button 75 is displayed on the display unit 70. In this embodiment, in addition to the local operation button 74 and the automatic operation button 75, a remote operation button 76 is also displayed on the display unit 70. The remote operation mode selected by pressing the remote operation button 76 is an operation mode for starting and stopping the pump 2 based solely on a signal input to the control device 40 from a remote location away from the water supply device 1. By pressing any of the local operation button 74, the automatic operation button 75, and the remote operation button 76, the operator can select the operation mode in which the control device 40 will operate the pump 2 of the water supply device 1.

[0030] In one embodiment, the remote operation mode may be incorporated into the automatic operation mode. In this case, the remote operation button 76 is omitted. Furthermore, when an operator presses the automatic operation button 73 to select the automatic operation mode, the control device 40 starts or stops the pump 2 based on the measurements of various sensors such as the flow switch 24 and the pressure sensor 26, and based on signals input to the control device 40 from a remote location away from the water supply device 1.

[0031] In this embodiment, the selection of the operation mode of the pump 2 is completed by the operator pressing either the local operation button 74, the automatic operation button 75, or the remote operation button 76. The control device 40 prohibits starting or stopping the pump 2 until the selection of the operation mode of the pump 2 is completed. In other words, once the selection of the operation mode of the pump 2 is completed, the control device 40 starts operating the pump 2 in the selected operation mode. For example, when the operator presses the local operation button 74, the control device 40 starts or stops the pump 2 based on the operation of the start button 71 or the stop button 72 on the display 63.

[0032] On the other hand, even if the measurement values ​​of various sensors reach the start or stop conditions for pump 2, or even if an emergency operation signal or regular operation signal is input to control device 40, control device 40 will not start or stop pump 2. With this type of control, pump 2 will not be started or stopped unintentionally by an operator during maintenance of water supply device 1. Although not shown, when an emergency operation signal or regular operation signal is input to control device 40, control device 40 may display a comment such as "Emergency operation signal being input" or "Regular operation signal being input" on display unit 70 of display 63. In this case, the operator can immediately change the operation mode of control device 40 to remote operation mode (or automatic operation mode) at their discretion.

[0033] The operation mode of the pump 2 is preferably selected (i.e., changed) while the pump 2 is stopped. In other words, the control device 40 is preferably configured to accept a command issued when the operation selection button 73 is pressed only when the pump 2 is stopped. In this case, even if the operation selection button 73 is pressed while the pump 2 is operating, the control device 40 will not display on the display unit 70 the display for selecting the operation mode (i.e., the local operation button 74, the automatic operation button 75, and the remote operation button 76). This control is expected to prevent the pump 2 from being unintentionally started or stopped, and to prompt the operator operating the operation selection button 73 to confirm the operation.

[0034] According to this embodiment, even if the control device 40 receives a start command for the pump 2, the control device 40 cancels the start of the pump 2 until an operator intentionally selects an operation mode for the pump 2. Therefore, it is possible to effectively prevent the pump 2 from being started unintentionally by an operator.

[0035] FIG. 4 is a schematic diagram showing a display according to another embodiment. As shown in FIG. 4, the display unit 70 of the display 63 may have an operation permission button 80. The operation permission button 80 is a button provided to reliably prevent the pump 2 from being started unintentionally by the operator. Even if the operator selects an operation mode, the control device 40 does not determine that the operation mode selection task for the pump 2 is complete until the operation permission button 80 is pressed. In other words, the control device 40 prohibits the start and stop of the pump 2 until the operation permission button 80 is pressed, and when the operation permission button 80 is pressed, the control device 40 starts operation of the pump 2 in the selected operation mode.

[0036] As shown in FIG. 4 , the display unit 70 may have an operation standby display 81. The operation standby display 81 lights up or flashes from the time the operator presses the operation selection button 73 until the operator presses the operation permission button 80, and is a display for notifying the operator that the selection of the operation mode of the pump 2 has not been completed. When the operator presses the operation permission button 80, the operation standby display 81 stops lighting up or flashing. In one embodiment, after the operation permission button 80 is pressed, the operation standby display 81 may be erased from the display unit 70. In this case, when the operator presses the operation selection button 73 to start the operation of selecting the operation mode of the pump 2, the operation standby display 81 is displayed on the display unit 70, and the operation standby display 81 starts lighting up or flashing.

[0037] In one embodiment, if a start signal for the pump 2 has been input to the control device 40 when the operation permission button 80 is pressed, the control device 40 may display an operation confirmation display on the display unit 70. FIG. 5 is a schematic diagram illustrating an example of the operation confirmation display. The operation confirmation display 95 shown in FIG. 5 displays a comment such as "The pump start signal is ON. May I start the pump operation?" along with a "Yes" button and a "No" button. When the operator presses the "Yes" button, the control device 40 starts operation of the pump 2 in the selected operation mode. That is, in this embodiment, when the operator presses the "Yes" button, the operation mode selection process for the pump 2 is completed. On the other hand, when the operator presses the "No" button, the control device 40 returns to the above-described operation standby state and lights or flashes the operation standby display 81. That is, in this embodiment, when the operator presses the "No" button, the operation mode selection process for the pump 2 is not completed. The operation confirmation display 95 can prompt the operator to reliably confirm the start of the pump 2.

[0038] FIG. 6 is a schematic diagram of a display according to yet another embodiment. As shown in FIG. 6 , the display unit 70 of the display 63 includes a parameter confirmation display 90 for confirming whether the target values ​​of parameters required for operation of the pump 2 are normal. Examples of parameters required for operation of the pump 2 include the control frequency value and / or control current value of the inverter 20, the rotational speed of the motor 3, the output value of the pressure sensor 26, and the setting value of the flow switch 24. In the example shown in FIG. 6 , the parameter confirmation display 90 displays a comment such as “Have you checked the parameters?” along with a “Yes” button and a “No” button. When the operator presses the “Yes” button, the control device 40 starts operation of the pump 2 in the selected operation mode. When the operator presses the “No” button, the control device 40 returns to the standby state described above and lights or flashes the standby display 81. In this embodiment, too, the selection of the operation mode for the pump 2 is completed when the operator presses the “Yes” button. However, when the operator presses the “No” button, the selection of the operation mode for the pump 2 is not completed. The parameter confirmation display 90 can prompt the operator to confirm that the pump 2 has been started.

[0039] Returning to FIG. 2 , the display unit 70 of the display device 63 may have a target value display 93. The target value display 93 displays the target value of the parameter required for operation of the pump 2. The target value display 93 allows the operator to immediately check the target value of the parameter required for operation of the pump 2.

[0040] Furthermore, the display unit 70 of the display device 63 may be provided with a measurement value display 94 that displays the measurement values ​​of sensors necessary for operating the pump 2. In the example shown in Fig. 2, the measurement value display 94 displays the rotation speed of the motor 3, the output current of the inverter 20, and the output value of the pressure sensor 26.

[0041] In the above-described embodiment, the display unit 70 has an operation status display unit 85 that indicates the operation status of the pump 2 (see FIG. 2). Fig. 7(a) is an enlarged view that schematically shows an example of the operation status display unit in a state where a start signal for the pump has been input to the control device, and Fig. 7(b) is an enlarged view that schematically shows an example of the operation status display unit in a state where a start signal for the pump has not been input to the control device.

[0042] In the example shown in Figures 7(a) and 7(b), the operating status display unit 85 includes a start-up signal display 86 that indicates whether or not a start-up signal for the pump 2 has been input to the control device 40, a contact information display 87 that indicates the setting status of the contact used when starting the pump 2, and a contact status display 88 that indicates the status of the signal input from the contact to the control device 40.

[0043] When a start signal is input to the control device 40, the start signal display 86 displays the comment "Start signal ON" (see Figure 7(a)), and when the input of the start signal to the control device 40 is stopped, the start signal display 86 displays the comment "Start signal OFF" (see Figure 7(b)).

[0044] The contact information display 87 displays whether the control device 40 is set to determine that a start signal for the pump 2 has been input when the contact is in an OPEN state, or whether the control device 40 is set to determine that a start signal for the pump 2 has been input when the contact is in a CLOSE state. The example of FIG. 7(a) shows a contact information display 87 in which the control device 40 determines that a start signal for the pump 2 has been input when the contact is in an OPEN state. The example of FIG. 7(b) shows a contact information display 87 in which the control device 40 determines that a start signal for the pump 2 has been input when the contact is in a CLOSE state.

[0045] The contact status display 88 displays whether or not an ON signal is actually being input from the contact to the control device 40. The contact status display 88 in the example of Fig. 7(a) shows a state in which an ON signal is actually being input to the control device 40. The contact status display 88 in the example of Fig. 7(b) shows a state in which an ON signal is not being input to the control device 40.

[0046] The operating status display unit 85, which displays a combination of the start signal display 86, contact information display 87, and contact status display 88, allows the operator to immediately visually confirm the consistency between the start signal for the pump 2 actually input to the control device 40 and the start conditions for the pump 2 set by the control device 40. Therefore, the operator can visually recognize problems such as errors in the internal settings of the control device 40, errors in wiring, and abnormal or broken contacts. As a result, it is expected that malfunctions of the pump 2 can be prevented before they occur.

[0047] For example, assume that the operating status display unit 85 is displayed as shown in FIG. 7(a). In this case, the start signal display 86 indicates that a start signal for the pump 2 has been input to the control device 40. Next, the contact information display 87 indicates that the contacts used to start the pump 2 are set to send a start signal for the pump 2 to the control device 40 when they are in the OPEN state. In contrast, the contact status display 88 indicates that the contacts are in the CLOSE state. That is, in the example shown in FIG. 7(a), even though a start signal for the pump 2 has been input to the control device 40, the actual state of the contacts used to start the pump 2 differs from the set state. Therefore, when the information shown in FIG. 7(a) is displayed on the operating status display unit 85, the operator can immediately recognize that a malfunction, such as an error in the internal settings of the control device 40, an error in wiring, or an abnormality or failure in the contacts, has occurred.

[0048] In the above-described embodiment, the motor 3 that drives the pump 2 is operated at a variable speed by the inverter 20. However, the water supply device 1 does not have to have the inverter 20. In this case, the control device 40 controls the supply of water to the building by controlling the on / off of the pump 2. Furthermore, in the above-described embodiment, an example was described in which the display 63 is a smartphone, but the display 63 is not limited to this example. For example, the display 63 may be built into the control device 40. In this case, the screen display unit 65 (see FIG. 1) may be used as the display 63.

[0049] The above-described embodiments have been described for the purpose of enabling a person of ordinary skill in the art to practice the present invention. Various modifications of the above-described embodiments would be obvious to a person skilled in the art, and the technical concept of the present invention may be applied to other embodiments. Therefore, the present invention is not limited to the described embodiments, but is to be interpreted in the broadest scope in accordance with the technical concept defined by the claims. [Explanation of symbols]

[0050] 1 Water supply device 2 pumps 3 motors 20 Inverter 26 Discharge side pressure sensor 28 Pressure Tank 40 Control device 63 Display (external terminal) 64 External Communications Department 65 Screen display section 70 Display section 71 Start button 72 Stop button 73 Operation selection button 74 On-machine operation button 75 Autonomous driving button 76 Remote driving button 80 Operation permission button 81 Operation standby display 85 Operation status display unit 86 Start signal display 87 Contact information display 88 Contact status display 90 Parameter confirmation display 93 Target value display 94 Measurement value display 95 Operation confirmation display

Claims

1. A control system for controlling the operation of a water supply device including at least a pump and a driving machine for driving the pump, a control device provided in the water supply device for controlling the operation of the pump and the driving machine; a display configured to be able to transmit and receive data to and from the control device via wire or wirelessly; the control device is configured to be able to switch the operation mode of the pump between a machine-side operation mode in which the operation of the pump is controlled based on a display start / stop signal transmitted from the display device, and an automatic operation mode in which the operation of the pump is controlled based on a start / stop signal transmitted from a device different from the display device; the display has an operation selection button for selecting an operation mode of the pump between the automatic operation mode and the on-machine operation mode, The control device prohibits activation of the pump from the time the operation selection button is pressed until selection of an operation mode for the pump is completed.

2. The display has an operation status display unit that displays the operation status of the pump, The operating state display unit a start signal indicator that indicates whether a start signal for the pump is input to the control device; a contact information display showing the contact settings used when starting the pump; The control system according to claim 1 , further comprising: a contact status indicator that indicates the status of a signal input from the contact to the control device.

3. 2. The control system according to claim 1, wherein the control device causes the display to display an operation standby display indicating that startup of the pump is not permitted from the time the operation selection button is pressed until selection of the operation mode of the pump is completed.

4. the display further includes an operation permission button for permitting activation of the pump device after the operation mode of the pump is selected; The control system according to claim 3 , wherein the control device controls the operation of the pump in the operation mode of the pump selected by the operation selection button after the operation permission button is pressed.

5. 5. The control system according to claim 4, wherein after the operation permission button is pressed, the control device causes the display device to display a parameter confirmation display for confirming whether target values ​​of parameters necessary for operation of the pump are normal.

6. 6. The control system according to claim 5, wherein, when the target value is not set, the control device causes the display device to display an operation standby display indicating that activation of the pump is not permitted.

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