EP3527829A1 - Pump system and pump control method - Google Patents

Abstract

The present disclosure relates to a pump system (1) having a first (3) of at least one pump unit (3, 5) for pumping a fluid (11), the first pump unit (3) comprising a pump, an electric drive motor and a motor control, a pump controller for commanding the motor control, and a sensor (7) with a sensor housing (27) and in the sensor housing (27) located sensor electronics (28) for detecting at least one parameter of the fluid (11) in the pump or in one with the Pump fluid-connected pipe, wherein the pump control is integrated in the sensor electronics (28).

Description

The present disclosure relates to a pump system having one or more pumps and a pump control method therefor. Preferably, these are one or more wet-running circulating pumps, which are designed as single-stage or multi-stage centrifugal pumps for pumping water.

Known systems with a plurality of pumps have Programmable Logic Controllers (PLCs) that control the interaction of the pumps. The US 9,670,918 B2 for example, describes a booster system with a PLC that attempts to determine the optimal turn-on parameters for the pumps.

By contrast, the present disclosure provides a pumping system and pump control method that does not require such a PLC, thereby saving complexity and cost of the system.

According to a first aspect of the present disclosure, a pump system is provided with a first of at least one pump unit for pumping a fluid, the first pump unit having a pump, an electric drive motor, and a motor controller, a pump controller for commanding the engine controller, and a sensor having a pump Sensor housing and located in the sensor housing sensor electronics for detecting at least one parameter of the fluid in the pump or in one with the Pump fluid-connected pipe, the pump controller is integrated into the sensor electronics.

The pump system disclosed herein thus uses the sensor electronics located in the sensor to save on the complex and expensive PLC and to command the pump (s) directly from the sensor. The "motor control" should here have those power electronic components that control the working current through the coils of the drive motor, such as a frequency converter. The term "commanding" is intended to mean in the sense of a triggering that command signals are sent from the pump control to the engine control, which determine the operation of the drive motor, such as an on and / or off signal, a target speed and / or target power consumption. In addition, although the sensor electronics may also provide measurement signals, the provision of measurement signals should not be misunderstood as commanding here, even if a pump controller makes the operation of the drive motor dependent on a measurement signal. The present disclosure is thus to be distinguished from systems in which a pump control outside the sensor receives a measurement signal from the sensor and makes the operation of the drive motor dependent on a measurement signal. Such a sensor-external pump control is just saved by the integrated into the sensor electronics pump control of the present disclosure. The pump control can be integrated in the form of software in the sensor electronics, without the need for a change in the sensor electronics, which usually provides only measurement signals. Any existing in the sensor electronics hardware components such as memory, processor, interface and signal connection, which are commonly used to provide measurement signals can be used here for the command of the engine control. Alternatively or additionally, one or more Such hardware components are adapted or extended to the command of the engine control.

Optionally, the sensor can be attached to a measuring point to the pump or to a fluidly connected to the pump pipe. The sensor is preferably arranged externally from a housing for the engine control. In this case, the sensor electronics are preferably designed for the direct detection of at least one parameter of the fluid in the pump or in a pipe fluid-connected to the pump. For this purpose, the sensor preferably has a sensor surface which, in sensor operation, is in direct contact with the fluid to be pumped in the pump or in a pipe fluid-connected to the pump.

Optionally, the sensor can be signal-connected to the engine control, whereby the pump control integrated in the sensor electronics can command the engine control via the signal connection. Such a signal connection can be wireless or via a cable connection. The command signals of the pump controller for commanding the engine control may be digital and / or analog.

Optionally, the at least one parameter of the fluid to be detected by the sensor may have a fluid temperature, a fluid pressure, a fluid flow and / or a fluid vibration. The at least one sensor can therefore be a temperature sensor, a pressure sensor, a flow sensor and / or a vibration sensor. A plurality of sensors may be arranged in a common sensor housing for different parameters of the fluid to be detected, such as a fluid temperature, a fluid pressure, a fluid flow, a fluid vibration and / or a vibration of the at least one pump unit and / or parts thereof. As a fluid vibration is here, for example, a number, a frequency, an amplitude and / or a time integral understood by pressure surges that can be caused in the pipe system, for example by closing a valve.

Optionally, the pump system may include a sensor power supply for powering the sensor. The sensor power supply can be configured separately from the at least one sensor with pump control and supply the sensor preferably via a cable connection with power. In this case, the sensor power supply can additionally serve for communication with the sensor via the cable connection between the sensor power supply and the sensor. The sensor power supply can also serve not only the power supply of the sensor, but also the drive motor and / or the motor control of the at least one pump unit. For this purpose, the sensor power supply can have an additional cable connection to the drive motor and / or the motor control of the at least one pump unit.

Optionally, the pump system may include a sensor communication interface via which the pump controller is programmable. The sensor communication interface can be integrated into the sensor electronics and / or the sensor power supply. If the sensor communication interface is at least partially integrated in the sensor power supply, the programming of the pump control can be conducted via the cable connection between sensor power supply and sensor for pump control in the sensor.

Optionally, the pump system may comprise a mobile communication device by means of which the pump control is programmable via a preferably wireless communication connection with the sensor communication interface. Such a communication device may be, for example, a notebook, tablet or smartphone, which communicate with the sensor communication interface via a preferably wireless communication link such as Bluetooth or WLAN can. By means of an executable program, such as an app on the communication device, a user can program the pump control and / or set operating parameters of one or more pump units. By "programming" in this context is, for example, an upload or update of an operating program, a selection from a plurality of available operating programs and / or setting one or more operating parameters such as target speed, target head, desired flow, target power and / or on / off be meant. The communication connection between the communication device and the sensor communication interface can be a two-way communication connection, by means of which the communication device visually informs a user via operating parameters, error messages, alarms, measured values and / or available operating programs via a display or a luminaire and / or acoustically can. The data can also be stored for statistical evaluation and / or error analysis on the communication device, a server and / or as part of a cloud solution.

Optionally, the pump system may have a control interface signal-connected to the engine control via which the engine control of the first pump unit can be commanded by means of the pump control. The control interface can be integrated, for example, in the sensor electronics and / or a sensor power supply. If the control interface is at least partially integrated in the sensor power supply, commanding the motor control via the cable connection between the sensor power supply and the sensor can be directed from the pump control in the sensor to the sensor power supply.

Optionally, the pump controller may be configured to command the engine controller based on the at least one parameter of the fluid detected by the sensor. It can additionally one or more conventional sensors, such as temperature sensors, pressure sensors, flow sensors and / or vibration sensors may be provided, in which the pump control is not integrated into the sensor electronics. These conventional sensors can provide the at least one sensor with pump control measurement signals via a communication link in order to use these for the pump control can. For example, in the case of a plurality of pump units, a sensor with pump control may be provided on one pump unit while conventional sensors may be provided on the other pumps. The at least one sensor with pump control can control the plurality of pump units on the basis of the self-detected as well as the detected by the conventional sensors fluid parameters.

Optionally, the pump controller may be configured to command the engine controller of the first pump unit according to a selectable operating program. Preferably, the operating program is selectable by means of an executable program, such as an app on a mobile communication device.

Optionally, the pump system may include a second of at least two pump units for pumping the fluid, wherein the pump controller is configured to command the motor controller of the first pump unit and / or a motor controller of the second pump unit according to a selectable operating program. The pump control in the sensor may control two or more pump units according to a selectable operating program. For this purpose, the at least one sensor with the respective motor control of each of the pump units to be controlled can be directly or indirectly signal-connected.

Optionally, the pump controller may be configured to command the engine controller of the first pump unit and / or a motor controller of a second pump unit with operating parameter commands, such as power on and power off commands, command speed commands, command lift altitude commands, command flow commands, and / or commanded power commands.

• Erfassen mindestens eines Parameters eines Fluids in einer Pumpe einer ersten von mindestens einer Pumpeneinheit oder in einem mit der Pumpe fluidverbundenen Rohr mittels eines Sensors, und
• Kommandieren einer Motorsteuerung der ersten Pumpeneinheit mittels einer in eine Sensorelektronik des Sensors integrierten Pumpensteuerung.

According to a second aspect of the present disclosure, there is provided a pump control method comprising the steps of:

• Detecting at least one parameter of a fluid in a pump of a first of at least one pump unit or in a pipe fluidly connected to the pump by means of a sensor, and
• Commanding a motor control of the first pump unit by means of a built-in sensor electronics of the sensor pump control.

Optionally, the pump control method may further comprise the step of programming the pump control via a sensor communication interface integrated into the sensor electronics and / or a sensor power supply. Such programming may preferably be done by means of a mobile communication device and via a preferably wireless communication link between the communication device and the sensor communication interface.

Optionally, the step of commanding may be based on the at least one parameter of the fluid sensed by the sensor. Alternatively or additionally, parameters of the fluid may be detected by other conventional sensors without integrated pump control and the at least one sensor with integrated pump control may be provided to base the command of the engine controller (s) thereon.

Optionally, the step of commanding may include an operating parameter command such as power on and power off command, command speed command, and / or command power command for a drive motor of the first pump unit in accordance with a selectable operating program.

• Kommandieren einer Motorsteuerung einer zweiten von mindestens zwei Pumpeneinheiten mittels der in die Sensorelektronik des Sensors integrierten Pumpensteuerung mit Betriebsparameter-Kommandos, wie beispielsweise Ein- und Ausschaltkommandos, Solldrehzahlkommandos, und/oder Sollleistungskommandos.

Optionally, the pump control method may further comprise the following step:

• Commanding a motor control of a second of at least two pump units by means of integrated in the sensor electronics of the sensor pump control with operating parameter commands, such as on and off commands, target speed commands, and / or nominal power commands.

These operating parameter commands may preferably correspond to a selectable operating program. Optionally, the operating program can be selected from a group of operating programs with a first operating program, in which the second pump unit is added as an additional unit to the first pump unit as the main unit, if the detected at least one parameter of the fluid indicates that the power of the first pump unit is insufficient , wherein preferably in an alternating cycle, the second pump unit serves as a main unit and the first pump unit as an additional unit.

Optionally, in a second selectable operating program, in which only the first pump unit is switched on as the main unit, preferably only the second pump unit as the main unit can be switched on in an alternating cycle. In an optional third selectable operating program, the first and second pump unit can be turned on. The first and second pump units can also be both switched off optionally.

Optionally, the pump control method may further comprise the step of detecting the number of times and / or operating times of the first and / or second pump unit, wherein the step of commanding based on the detected number of power-on and / or the detected operating time of the first and / or second pump unit takes place.

• Fig. 1 eine schematische Ansicht eines Ausführungsbeispiels des hierin offenbarten Pumpensystems;
• Fig. 2a-e verschiedene Ansichten eines Ausführungsbeispiels eines Sensors gemäß dem hierin offenbarten Pumpensystem; und
• Fig. 3 eine schematische Ansicht eines Ausführungsbeispiels des hierin offenbarten Pumpensteuerungsverfahrens.

The disclosure is explained in more detail with reference to exemplary embodiments illustrated in the drawings. Show it:

• Fig. 1 a schematic view of an embodiment of the disclosed herein pump system;
• Fig. 2a-e various views of an embodiment of a sensor according to the pump system disclosed herein; and
• Fig. 3 a schematic view of an embodiment of the disclosed herein pump control method.

Fig. 1 shows a pump system 1 with a first pump unit 3, a second pump unit 5, a first sensor 7 and a mobile communication device 9. The first pump unit 3 and the second pump unit 5 are connected to a not shown here piping system to a fluid 11, preferably Water, to pump. The first pump unit 3 and the second pump unit 5 can be connected in series or parallel to each other in the pipe system. The pump system 1 can also have more pump units in series and / or parallel to one another. The pump units 3, 5 are in this embodiment of the same type, namely a multi-stage Centrifugal pump unit with vertical rotor axis. In alternative embodiments, the pump units of the pump system may be of different sizes and / or different types, for example, one or more of the pump units may be only a single stage pump unit having a vertical or horizontal rotor axis. It does not necessarily have to be centrifugal pump units, but other types of pumps can be used.

The first pump unit 3 here has a pump housing 13 with a suction nozzle 15 and a discharge nozzle 17 with associated flanges 19, 21 for connection to the pipe system, not shown here. The fluid to be pumped 11 is sucked in at the intake 15 and pumped to the discharge port 17. Within the pump housing 13, a plurality of wheels is arranged one above the other vertically about one vertical rotor axis. The rotor axis is driven by an electric drive motor within a motor housing 23 arranged above the pump housing 13. On the motor housing 23, an electronics housing 25 is arranged, in which there is a motor controller with a frequency converter to provide the working current for the drive motor. In an alternative embodiment, the motor control may be at least partially in the motor housing 23, so that it does not require a separate electronics housing 25 or the electronics housing 25 is integrated as an area in the motor housing 23.

The first sensor 7 is arranged in this embodiment at a measuring point on the discharge nozzle 17 of the pump housing 13 for detecting at least one parameter of the fluid 11 in the discharge nozzle 17 of the first pump unit 3. In an alternative embodiment, the first sensor 7 remote from the first pump unit 3, For example, at a measuring point on a pipe of the pipe system connected to the first pump unit 3, be arranged to at least one To detect parameters of the fluid 11 in the pipe fluidly connected to the pump. The first sensor 7 has a sensor housing 27 and a sensor electronics 28 located in the sensor housing 27. Furthermore, the first sensor 7 has sensing elements 29, 31 which project at least partially into the fluid 11 to be pumped while the sensor housing 27 is arranged completely or at least partially outside the pressure port 17. The sensing elements 29, 31 may be configured to measure the fluid temperature, the fluid pressure, the fluid flow and / or the fluid vibration as a parameter of the fluid 11. As an alternative or in addition to a fluid vibration, the vibration of one of the pump units 3, 5 or parts thereof and / or a pipe fluid-connected to one of the pump units 3, 5 can be measured. As a fluid vibration is understood here, for example, a number, a frequency, an amplitude and / or a temporal integral of pressure surges, which can be caused in the pipe system, for example by closing a valve.

In the sensor electronics 28 in the sensor housing 27, a pump control is integrated, with which the motor control in the electronics housing 25 of the first pump unit 3 can be commanded. For this purpose, between the sensor electronics 28 and the motor control in the electronics housing 25, a first signal connection 35 for the transmission of commands via a pump-side interface 37. The first signal connection 35 can be wireless or via cable. In this embodiment, the first sensor 7 is additionally connected via a second signal connection 39 to the motor control of the second pump unit 5 in order to be able to command these as well. At a pressure port of the second pump unit 5, a second sensor 41 is mounted here, which detects in a conventional manner only at least one parameter of the fluid and in which no pump control is integrated into the sensor electronics. In an alternative embodiment, the second sensor 41 as the first sensor 7 with a in the sensor electronics integrated pump control to command the motor control of the first pump unit 3 and / or the second pump unit 5.

The first sensor 7 is powered by a sensor power supply 43 in this embodiment. The sensor power supply 43 is connected to the first sensor 7 via a cable connection 45. The sensor power supply 43 may include a transformer and / or a power converter 47 for providing a suitable DC voltage supply via the cable connection 45 from an AC line voltage for the first sensor 7. The cable connection 45 and / or an additional wireless or wired communication connection between the first sensor 7 and the sensor power supply 43 may serve the communication between the sensor power supply 43 and the sensor 7. The sensor power supply 43 may additionally serve here via a cable connection 47 with the pump-side interface 37 of the power supply of the drive motor and / or the motor control of the first pump unit 3.

In the in Fig. 1 shown embodiment, two ways are shown how the pump control in the sensor electronics 28 of the first sensor 7 is programmable. A sensor communication interface 49 can for this purpose be integrated into the sensor electronics 28 and / or the sensor power supply 43. Via respective preferably wireless communication links 51, 53 between the mobile communication device 9, here in the form of a smartphone, and the sensor communication interface 49, the pump control in the first sensor 7 is programmable. If the sensor communication interface 49 is integrated exclusively in the sensor power supply 43, the programming of the sensor electronics 28 can take place via the cable connection 45.

The command of the engine control via the first signal connection 35 and / or first signal connection 39 takes place here via a control interface 55. The control interface 55 can, as shown, additionally be signal-connected to a motor control of one or more further pump units, such as the second pump unit 5 ( here via the second signal connection 39) in order to also be able to command these. The control interface 55 may be incorporated into the sensor electronics 28 (as in FIG Fig. 1 shown) and / or the sensor power supply 43 may be integrated.

The pump control is configured here to command the motor control of the first pump unit 3 and of the second pump unit 5 based on the at least one parameter of the fluid detected by the sensor 7. For example, the sensor 7 may be a pressure sensor that provides a signal that correlates with the fluid pressure in the discharge port 17 as a detected parameter. If the signal exceeds or falls below a predetermined set point, the pump controller may command a higher or lower pump speed of the first pump unit 3 and / or the second pump unit 5 and / or turn it on or off as needed. The pump control is preferably configured to command the respective motor control of the first pump unit 3 and / or the second pump unit 5 in accordance with a selectable operating program.

FIGS. 2a-e show the sensor 7, here in the form of a pressure sensor, more precisely from different sides. The side view 2a shows the sensor housing 27, which encloses a lower sensing element 29 and the upper sensor electronics 28. The lower sensing element 29 is configured to project into the fluid to be pumped, and as narrow as possible to minimize the flow-induced resistance to the fluid through the sensing element 29. As shown in front view 2b, the sensing element 29 has an opening 57 through which fluid flows into a sealed volume 59 and with a pressure sensor 61 projecting into the sealed volume 59 (see detailed section BB in FIG Fig. 2d ) can come into contact. The fluid pressure on the pressure sensor 61 is detected by means of the sensor electronics 28, which is arranged on a circuit board 67.

The sensor 7 is adapted for a corresponding measuring point and has above the sensing element 29 closure and sealing means 69, for example in the form of an O-ring to be sealingly installed at a measuring point of the pump unit 3, 5 or the pipe system. An upper part of the sensor housing 27, which comprises at least a majority of the sensor electronics 28, lies outside the pump unit 3, 5 or of the pipe in the embodiment shown. This outboard part of the sensor housing 27 can therefore be made larger than the sensing element 29. The circuit board 67 with the sensor electronics 28 and integrated therein pump control can be configured correspondingly large (see section AA in Fig. 2e ). Alternatively, however, the entire sensor housing 27 can be completely integrated into the pump unit 3, 5 or the pipe without any part of the sensor housing 27 protruding from the pump unit 3, 5 or the pipe.

Fig. 3 schematically shows an example of the pump control method disclosed herein. First of all, the pump control is programmed 301 via a sensor communication interface 49 integrated into the sensor electronics 28 and / or a sensor power supply 43. Such programming can preferably take place by means of a mobile communication device and via a preferably wireless communication connection between the communication device and the sensor communication interface. Then follows a step of detecting 303 at least one parameter of a fluid in a pump of a first of at least one pump unit 3 or in one with the Then, a motor control of the first pump unit 3 is commanded by means of the integrated into a sensor electronics 28 of the sensor 7 and programmed via the sensor communication interface 49 pump control. Optionally, the step of command 305 may be based on the at least one parameter of the fluid sensed by the sensor. Alternatively or additionally, parameters of the fluid may be sensed by other conventional sensors without integrated pump control and provided to the at least one sensor with integrated pump control to base the command of the engine controller (s) thereon. Optionally, the step of command 305 may include an operating parameter command, such as power on and power off command, command speed command, and / or command power command for a drive motor of the first pump unit according to a selectable operating program.

Optionally, the pump control method may further comprise the step of: commanding 307 a motor control of a second one of at least two pump units 3, 5 by means of the pump control integrated with the sensor electronics of the sensor with operating parameter commands, such as on / off commands, command speed commands, and / or target power commands. These operating parameter commands may preferably correspond to a selectable operating program. Optionally, the operating program may be selectable from a group of operating programs with a first operating program, in which the second pump unit is added as an additional unit to the first pump unit 3 as the main unit, if the detected at least one parameter of the fluid indicates that the power of the first pump unit 3 is not sufficient, preferably in an alternating cycle, the second pump unit 5 serves as a main unit and the first pump unit 3 as an additional unit. Optionally, in a second selectable Operating program in which only the first pump unit 3 is switched on as the main unit, preferably only the second pump unit 5 is switched on as an main unit in an alternating cycle. In an optional third selectable operating program, the first and second pump units 3, 5 may be on. The first and second pump units 3, 5 can also both be switched off optionally.

During pump operation, finally, the number of turn-on operations and / or the operating time of the first and / or second pump unit 3, 5 is detected 309, wherein the step of command 305, 307 based on the detected number of power-on and / or the detected operating time of the first and / or second pump unit 3, 5 takes place. Thus, the pump units 3, 5 can be claimed in the same degree as possible to prevent premature wear of one of the pump units. Also, a longer non-use of one of the pump units is thereby avoided, so as not to be the case that a not used for a long time pump does not work properly when it is needed.

The numbered designations of the components or directions of movement as "first", "second", "third", etc. are herein selected purely arbitrarily to distinguish the components or directions of movement with each other and can be chosen arbitrarily different. It is associated with no meaning. A designation of a component or technical feature as "first" should not be misunderstood to mean that there must be a second component or technical feature of this type. In addition, any method steps, unless explicitly explained otherwise or mandatory, can be performed in any order and / or in terms of time, partially or completely overlapping.

Equivalent embodiments of the parameters, components, or functions described herein that appear to be obvious in light of this description of a person skilled in the art are herein as if explicitly described. Accordingly, the scope of the claims is intended to include such equivalent embodiments. As optional, advantageous, preferred, desirable, or similarly designated "may" features are to be understood as optional rather than as limiting the scope of protection.

The described embodiments are to be understood as illustrative examples and are not an exhaustive list of possible embodiments. Each feature disclosed in one embodiment may be used alone or in combination with one or more other features, regardless of which embodiment the features have been described. While at least one embodiment is described and shown herein, variations and alternative embodiments that appear obvious to one of ordinary skill in the art in light of this description are also within the scope of this disclosure. Incidentally, neither the term "comprising" herein is intended to exclude additional other features or method steps nor is "a" or "an" to exclude a plurality.

Claims (25)

Pump system (1) with - A first (3) of at least one pump unit (3, 5) for pumping a fluid (11), wherein the first pump unit (3) comprises a pump, an electric drive motor and a motor control, a pump controller for commanding the engine control, and a sensor (7) having a sensor housing (27) and sensor electronics (28) located in the sensor housing (27) for detecting at least one parameter of the fluid (11) in the pump or in a pipe fluidly connected to the pump, wherein the pump control is integrated in the sensor electronics (28). Pump system (1) according to claim 1, wherein the sensor (7) at a measuring point to the pump or to a fluidly connected to the pump pipe is attachable. Pump system (1) according to claim 1 or 2, wherein the sensor (7) is signal-connected to the motor controller. Pump system (1) according to one of the preceding claims, wherein the at least one of the fluid (11) to be detected by the sensor (7) has a fluid temperature, a fluid pressure, a fluid flow rate, a fluid vibration, and / or a vibration of the at least one pump unit (3 , 5) and / or parts thereof. Pump system (1) according to one of the preceding claims, further comprising a sensor power supply (43) for powering the sensor (7). A pump system (1) according to claim 5, wherein the sensor power supply (43) is for communicating with the sensor (7) via a cable connection between the sensor power supply (43) and the sensor (7). Pump system (1) according to claim 5 or 6, wherein the sensor power supply (43) of the power supply of the drive motor and / or the motor control of the at least one pump unit (3, 5) is used. A pump system (1) according to any one of the preceding claims, further comprising a sensor communication interface (49) via which the pump controller is programmable. Pump system (1) according to claim 8, wherein the sensor communication interface (49) in the sensor electronics (28) and / or the sensor power supply (43) is integrated. Pump system (1) according to claim 8 or 9, further comprising a mobile communication device (9), by means of which the pump control via a preferably wireless communication link (51, 53) with the sensor communication interface (49) is programmable. Pump system (1) according to one of the preceding claims, further comprising a control interface (55) signal-connected to the motor controller, via which the motor control of the at least one pump unit (3, 5) can be commanded by means of the pump control. Pump system (1) according to claim 11, wherein the control interface (55) in the sensor electronics (28) and / or a sensor power supply (43) is integrated. The pump system (1) of any one of the preceding claims, wherein the pump controller is configured to command the engine controller based on the at least one parameter of the fluid sensed by the sensor. Pump system (1) according to one of the preceding claims, wherein the pump control is adapted to command the motor control of the at least one pump unit (3, 5) according to a selectable operating program. A pump system (1) according to any one of the preceding claims, further comprising a second (5) of at least two pump units (3, 5) for pumping the fluid (11), the pump controller being arranged to control the motor of the first pump unit in accordance with a selectable operation program (3) and / or command a motor control of the second pump unit (5). Pump system (1) according to one of the preceding claims, wherein the pump control is adapted to the engine control of the first pump unit (3) and / or a motor control of a second pump unit (5) with operating parameter commands, such as on and off commands, target speed commands, and / or nominal power commands to command. Pump control method with the steps: - Detecting (303) at least one parameter of a fluid (11) in a pump of a first (3) of at least one pump unit (3, 5) or in a pipe fluidly connected to the pump by means of a sensor (7), and - Commanding (305) a motor control of the first pump unit (3) by means of a in a sensor electronics (28) of the sensor (7) integrated pump control. A pump control method according to claim 17, further comprising the step of: - Programming (301) of the pump control via a in the sensor electronics (28) and / or a sensor power supply (43) integrated sensor communication interface (49). The pump control method of claim 18, wherein the step of programming (301) is by means of a mobile communication device (9) and via a preferably wireless communication link (51, 53) between the communication device (9) and the sensor communication interface (49). The pump control method according to any one of claims 17 to 19, wherein the step of commanding (305) is based on the at least one of the fluid (11) detected by the sensor (7). A pump control method according to any one of claims 17 to 20, wherein the step of commanding (305) comprises an operating parameter command such as on / off command, command speed command, and / or command power command for a drive motor of the first pump unit (3) in accordance with a selectable operating program. A pump control method according to any one of claims 17 to 21, further comprising the step of: Commanding (307) a motor control of a second (5) of at least two pump units (3, 5) by means of the pump control with operating parameter commands integrated in the sensor electronics (28) of the sensor (7), such as on / off commands, setpoint speed commands, and / or nominal power commands. The pump control method of claim 22, wherein the operating parameter commands are commanded according to a selectable operating program. The pump control method of claim 23, wherein the operating program is selectable from a group of operating programs - A first operating program in which the second pump unit (5) is added as an additional unit to the first pump unit (3) as the main unit, if the detected at least one parameter of the fluid (11) indicates that the power of the first pump unit (3) is insufficient , wherein preferably in an alternating cycle, the second pump unit (5) serves as a main unit and the first pump unit (3) as an additional unit. A pump control method according to any one of claims 17 to 24, further comprising the step: Detecting (309) the number of switch-on operations and / or the operating runtime of the first (3) and / or second pump unit (5), wherein the step of commanding (305, 307) is based on the detected number of power-up events and / or the detected run-time of the first (3) and / or second pump unit (5).

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