Method for checking knob gear in release

Abstract

The invention relates to a method for checking the gear of a knob in a release. The method comprises the following steps: step A, actuating a reset key to empty the operation of an indicator lamp; step B, the control unit receives gear signals from at least one group of knobs, performs data processing on the gear signals, and obtains a first indication value and a second indication value according to a processing result; step C, the indicating lamp is lightened in a first light-emitting mode according to the received first indicating value and is lightened in a second light-emitting mode according to the received second indicating value, so that a user is allowed to verify the gear of the knob in the release; and step D, after the verification is finished, the indicating lamp is lightened in a third light-emitting mode to inform the user that the verification step is finished. In this way, a user is allowed to visually and quickly check whether the knob is rotated in place as desired without disconnecting the electronic release from the frame-type circuit breaker.

Description

Technical Field

[0001] The invention relates to the technical field of checking the gear position of a knob switch, and in particular to a method for checking the gear position of a knob in a release. Background Art

[0002] As is known, for example, in frame-type circuit breakers, a trip unit (Electrical Trip Unit) is often used to ensure the safety of electricity use. Specifically, it is mechanically connected to the circuit breaker. When it detects that there is a current exceeding the set setting (fault) current in the circuit, it disconnects the intelligent electronic device of the main circuit according to the set action time to play a role in electric shock and leakage protection. It is well known in the art that an electronic trip unit can be used together with a current transformer and a trip driver as a subsystem of a circuit breaker to provide protection for the circuit breaker. The electronic trip unit analyzes the signal from the current transformer. If the current level and the time delay setting value are exceeded, the electronic trip unit will disconnect the circuit breaker. For a specific circuit breaker, its automatic overload and short-circuit tripping characteristics are determined by the current rating and the protection setting value selected by the user. There is no mechanical or direct magnetic action between the primary current side and the mechanical tripping component of the circuit breaker.

[0003] Generally speaking, an electronic trip unit can include the following three modules: a frame module, a control module, and an auxiliary power module. The control module contains a microcontroller that measures and calculates the actual RMS current sensing for the protection function and can be replaced in the field. The frame module generally corresponds to the circuit breaker rating and is permanently installed on the circuit breaker frame and cannot be removed or replaced. The auxiliary power module allows the electronic trip unit to provide power to other modules in the electronic trip unit when it is not electrically connected to the circuit breaker. After the electronic trip unit is electrically connected to the circuit breaker, the current transformer is built into the circuit breaker frame. It can consist of two coils, one of which is wound on an iron core and the other is an air-core coil (Rogowski coil). When current starts to flow through the circuit breaker, the iron core coil generates a secondary current to power the trip unit. At the same time, the air-core coil provides a signal that can be processed to detect the current flowing through the circuit breaker. The mechanical action required to trigger the tripping of the circuit breaker is provided by a dedicated low-energy trip driver. The trip actuator is an integral part of the circuit breaker mechanism, which also includes a charging handle and manual "open" and "close" buttons. The trip actuator is automatically reset by the mechanism.

[0004] As is known, in the utility model patent document with application number CN2023201595004, an electronic trip unit is disclosed, which can be embedded in a circuit breaker and includes: a main body with a front panel and a rear housing and a display screen located on the front panel. The display screen provides measurement values, events and an interface for selecting a certain configuration option. Three buttons are provided below the display screen, which are used to control the content displayed on the display screen and to select a certain configuration option. When in use, when the electronic trip unit of this model is initially powered on, the display screen will briefly display a loading screen and then change to the "MAIN" main menu. During this period, the trip unit has begun to function and perform protection. Depending on the type of trip unit, the main menu provides a variety of submenu options. To access each submenu, press the down or up arrow button and then press the enter button to highlight a submenu. As a result, the user can set or adjust various performance parameters of the trip unit in a very intuitive way with the help of the buttons located under the display screen.

[0005] However, this type of electronic release with a display screen has high costs and requires users to undergo certain training to master the use of the electronic release. Therefore, in order to be closer to the user's usage habits, there is also a need to provide an electronic release with a knob. At this time, in order to be closer to the user's habits, it can be considered to provide an arrow with a significant color on the surface of the knob and to provide gears represented by different readings around the knob to feedback whether the user has set it in place. However, since there are often certain tolerances or idle travels when the knob is installed and manufactured, there is a possibility that the actual gear position of the knob is not completely consistent with the gear position represented by the arrow. For example, when the user wants to turn the knob from the 0.4 gear position to the 0.5 gear position, judging from the direction of the arrow, it has been turned to the 0.5 gear position. At that time, due to the installation and the existence of the knob tolerance, the knob often stops between 0.4 and 0.5, and the actual setting gear is still 0.4. At this time, if you want to verify the actual gear position of the knob, you can only connect a computer or other host computer to the electronic release and use the host computer software to read the gear position information of the knob for comparison. This means that the electronic release needs to be disconnected from the frame circuit breaker, and then the user needs to connect to the host computer and install the host computer software for operation. These processes are very cumbersome and time-consuming, which brings a bad experience to users and hinders the popularization and promotion of knob-type electronic releases.

[0006] Therefore, a new solution is proposed in the art to allow a method to verify the knob position of a knob-type electronic release in a simpler, more intuitive and low-cost manner, which allows the user to quickly and visually verify whether the knob is rotated to the desired position on site without disconnecting the electronic release from the frame circuit breaker, so as to improve the user-friendliness of the knob-type electronic release. Summary of the invention

[0007] Therefore, the task of the present invention is to provide a method for checking the knob position in a release, thereby overcoming the above-mentioned shortcomings of the prior art.

[0008] According to one aspect of the present invention, a method for verifying the position of a knob in a release is provided, wherein the release comprises: - a main body with a front panel and a rear shell plate, wherein the front panel has at least one set of knobs for operating or setting the working parameters of the electronic release, an indicator light corresponding to the knob, and a reset key for clearing the indicator light operation; - a control unit, which is configured to receive a position signal from at least one set of knobs and send the processed indication signal to the indicator light, wherein the method comprises the following steps: step A, actuating the reset key to clear the operation of the indicator light; step B, the control unit receives the position signal from at least one set of knobs and performs data processing on the position signal, and obtains a first indication value and a second indication value according to the processing result; step C, sending the first indication value and the second indication value to the indicator light, wherein the indicator light is illuminated in a first lighting mode according to the received first indication value and is also illuminated in a second lighting mode according to the received second indication value, wherein the first lighting mode is different from the second lighting mode to allow the user to verify the position of the knob in the release; step D, after the verification is completed, the indicator light is illuminated in a third lighting mode to notify the user that the verification step has been completed.

[0009] Therefore, the present invention can provide a method for users to check the knob position of a knob-type electronic release in a simpler, more intuitive and low-cost manner. This allows the user to quickly visually check whether the knob is rotated to the desired position without disconnecting the electronic release from the frame-type circuit breaker, thereby improving the user-friendliness of the knob-type electronic release.

[0010] In some embodiments, as a preferred aspect, the at least one group of knobs includes a first knob for setting the long delay setting current value of the release and a second knob for setting the long delay time of the release, wherein the indicator light is a long delay indicator light configured to indicate the occurrence of a long delay tripping or an over-temperature tripping, wherein the first indication value in step B is the highest bit value of the sum of the gear value of the first knob and the gear value of the second knob, and the second indication value is the lowest bit value of the sum of the gear value of the first knob and the gear value of the second knob.

[0011] In some embodiments, as a preferred aspect, the at least one group of knobs also includes a third knob for setting the short-delay set current value of the release and a fourth knob for setting the short-delay time of the release, and also includes a short-delay indicator light configured to indicate the occurrence of a short-delay trip or a mechanism error, wherein the short-delay indicator light is also configured to implement steps B, C and D, wherein the first indication value in step B is the highest digit value of the sum of the gear value of the third knob and the gear value of the fourth knob, and the second indication value is the lowest digit value of the sum of the gear value of the third knob and the gear value of the fourth knob.

[0012] In some embodiments, as a preferred aspect, the at least one group of knobs also includes a fifth knob for setting the instantaneous set current value, which also includes an instantaneous indicator light configured to indicate the occurrence of an instantaneous trip, an on-current trip, or a high instantaneous trip, wherein the instantaneous indicator light is also configured to implement steps B, C, and D, wherein the first indication value in step B is the highest bit value of the gear value of the fifth gear value and the second indication value is zero.

[0013] In some embodiments, as a preferred aspect, at least one of the groups further includes a sixth knob for setting the ground fault current value and a seventh knob for setting the ground fault time, and further includes a grounding indicator light configured to indicate the occurrence of a ground trip or a ground alarm, wherein the grounding indicator light is also configured to implement steps B, C and D, wherein the first indication value in step B is the highest bit value of the sum of the gear value of the sixth knob and the gear value of the seventh knob, and the second indication value is the lowest bit value of the sum of the gear value of the sixth knob and the gear value of the seventh knob.

[0014] In some embodiments, as a preferred aspect, the first light-emitting mode is designed to flash at a frequency of once per second, wherein the number of flashes is equal to the value of the highest bit of the sum of the gear values, and the second light-emitting mode is designed to flash at a frequency of twice per second, wherein the number of flashes is equal to the value of the lowest bit of the sum of the gear values.

[0015] In some embodiments, as a preferred aspect, the third light emitting pattern is designed to flash twice at a frequency of once per second to notify the user that the verification step has been completed.

[0016] Some of the other features and advantages of the present invention will be apparent to those skilled in the art after reading this application, and the other parts will be described in the following specific embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1is a stereoscopic view of a knob type release according to the present invention;

[0019] Figure 2 is a front view of a knob type release according to the present invention;

[0020] Figure 3 is another stereoscopic view of the knob type release according to the present invention;

[0021] Figure 4 is a side view of a knob type release according to the present invention.

[0022] Description of reference numerals:

[0023] 100, trip device; 11, front panel; 12, rear shell plate; 13, reset button;

[0024] 14. Status indicator light; 15. Battery tray; 16. Indicator label; 17. Door cover;

[0025] 20. Long delay indicator light; 21. First knob; 22. Second knob;

[0026] 30. Short delay indicator light; 31. Third knob; 32. Fourth knob;

[0027] 40. Momentary indicator light; 41. Fifth knob;

[0028] 50. Ground indicator light; 51. Sixth knob; 52. Seventh knob; DETAILED DESCRIPTION

[0029] Now, with reference to the accompanying drawings, a schematic scheme of the knob-type release and the method for checking the knob position thereof disclosed in the present invention is described in detail. Although the drawings are provided to present some embodiments of the present invention, the drawings do not have to be drawn according to the dimensions of the specific implementation scheme, and certain features may be enlarged, removed or partially cut to better illustrate and explain the disclosure of the present invention. Some components in the drawings can be adjusted in position according to actual needs without affecting the technical effect. The phrase "in the drawings" or similar terms appearing in the specification do not necessarily refer to all drawings or examples.

[0030] Certain directional terms used to describe the drawings below, such as "inside", "outside", "above", "below" and other directional terms, will be understood to have their normal meanings and refer to those directions involved when the drawings are normally viewed. Unless otherwise specified, the directional terms described in this specification are basically in accordance with the conventional directions understood by those skilled in the art.

[0031] The terms "first", "first", "second", "second" and the like used in the present invention do not indicate any order, quantity or importance, but are used to distinguish one component from other components.

[0032] In order to further understand the purpose, structure, characteristics, and functions of the present invention, it is described in detail below with reference to the embodiments.

[0033] As the present invention Figure 1-4 As shown, the electronic release 100 according to the present invention can be used in a frame-type circuit breaker. When it is detected that there is a current exceeding the set setting (fault) current in the circuit, the intelligent electronic device of the main circuit is disconnected according to the set action time, thereby playing a role in electric shock and leakage protection.

[0034] Figure 1 and 3 The three-dimensional view of the electronic trip unit 100 according to the present invention is shown in FIG. Figure 2 The front of the electronic trip unit is shown. Here, the electronic trip unit 100 can be embedded in the circuit breaker and used as a subsystem of the circuit breaker together with the current transformer and the tripping driver to provide protection for the circuit breaker. It includes: a main body 10 with a front panel 11 and a rear housing 12. Among them, the surface of the front panel 11 is provided with at least one set of knobs for operating or setting various working parameters of the electronic trip unit 100, an indicator light corresponding to the knob located near at least one set of knobs, and a reset key 13 for operating the situation indicator light. During operation, the user is allowed to press the button 13 marked as "Reset" using a small tool. Pressing this button clears the flashing of the tripping cause indicator light and clears the configurable relay lockout alarm information.

[0035] To achieve electrical communication with the circuit breaker, the current transformer and the tripping drive and to facilitate parameter setting of the electronic tripping device, the electronic tripping device 100 also has a built-in control unit. As a non-limiting example, the control unit of the electronic tripping device 100 can execute software instructions stored in its internal memory or downloaded to its memory (not shown). More specifically, the memory of the electronic tripping device includes a lookup table, which contains a series of software instructions associated with each knob and the corresponding indicator light, thereby supporting the functions of the knobs and the indicator lights, that is, allowing the gear position signal from at least one set of knobs to be received and the processed indication signal to be sent to the indicator lights.

[0036] Furthermore, the electronic trip unit 100 further includes a status indicator light 14 located on the upper portion of the front panel 11 of the main body 10 for displaying the status of the electronic trip unit, wherein when the electronic trip unit is operating normally, the status indicator light 14 is configured to emit green light, for example, at a frequency of flashing once per second. The status indicator light is also electrically connected to the built-in control unit to respectively perform the following functions according to the software instructions in the control unit:

[0037] - For example, when the electronic trip unit 100 detects at least one of the following faults: a trip actuator failure, a firmware error, etc., the status indicator light 14 can change from green light to red light in response to a signal from the control unit.

[0038] - When the electronic trip unit 100 detects at least one of the following faults: insufficient power, overload or over-temperature alarm of the electronic trip unit 100, the status indicator light 14 can change from green light to orange light in response to a signal from the control unit.

[0039] - When there is no auxiliary power supply or the primary current is insufficient to power the electronic release 100, the status indicator light 14 may be off. Only when the auxiliary power supply is provided again or the circuit breaker load increases, the status indicator light 14 will start flashing again.

[0040] In order to realize the self-power supply of the electronic trip unit 100, a battery tray 15 for installing batteries is optionally provided at the bottom of the front panel 11 of the electronic trip unit 100. When the electronic trip unit 100 is not plugged into the frame circuit breaker, the battery in the battery tray 15 powers the indicator devices such as the knob indicator light and the real-time clock, and assists in recording the trip unit events. Here, for example, the battery is a button battery that can be inserted into the battery tray 15. Furthermore, an indicator label 16 for indicating the rated current value (In,) of the frame circuit breaker to the user is also provided near the battery tray 15.

[0041] In order to ensure the communication between the electronic trip unit 100 and the external device, a micro-B USB connector, which may be a USB2.0 protocol, is provided below the electronic trip unit 100. The USB connection can be used together with the protection management software of the electronic trip unit to configure and monitor the electronic trip unit 100. The USB connection can also generally provide power through the host end of the USB connection to power on the trip unit when the auxiliary power supply is not available. It can also be used temporarily when the user configures or monitors the trip unit. In order to protect the USB connector from water and dust, a door cover 17 that can open or close the USB connector for the electronic trip unit 100 to communicate with external devices is preferably provided below the front panel 11 of the electronic trip unit 100.

[0042] Figure 4FIG. 1 is a side view of the electronic trip unit 100 according to the present invention, showing the back side of the electronic trip unit. Figure 4 In the figure, the rear shell plate 12 of the main body includes a positioning portion for positioning the main body 10 of the electronic trip unit 100 into a circuit breaker (not shown), a joint portion for realizing an adaptive connection between the main body 10 of the electronic trip unit 100 and the circuit breaker, and a data plug-in portion for realizing an electrical connection between the electronic trip unit 10 and the circuit breaker. In particular, the positioning portion of the electronic trip unit 100 can not only be used for its rapid positioning in the circuit breaker, but also for fixing the electronic trip unit to a specified position outside the circuit breaker. In particular, the joint portion has a plurality of pluggable joints for performing an adaptive combination between the main body of the electronic trip unit 100 and the connecting parts of the circuit breaker. Furthermore, by means of standardized pluggable joints, the main body of the electronic trip unit 100 can be adapted to be detachably engaged into a variety of common types of circuit breakers.

[0043] like Figure 1-3 As shown, a first knob 21 for setting the long delay setting current value of the release 100 and a second knob 22 for setting the long delay time of the release are provided on the front panel 11 of the electronic release 100, wherein the first knob 21 sets the long delay setting current value, wherein the setting value ranges from 0.4 to 1.0, expressed as a multiple of the current rating (In) of the frame circuit breaker. Correspondingly, a gear value for indicating the multiple is provided around the first knob 21, which is, for example, 0.4, 0.5 to 1.0. The long delay setting value can ensure that the circuit breaker can carry the full rated current value (Ir) without tripping. Further, in the present invention, the long delay time setting value ranges from 0.5 to 24 seconds, representing the total clearing time when the current value is equal to 6 times (Ir). All times are referenced to the upper limit of the tolerance band to ensure that the time does not exceed the maximum setting value. When the 14t slope is selected, the overload will cause a very long delay, which may exceed the circuit breaker rating. Therefore, when a delay higher than about 7 seconds is selected, 7 seconds will be used. For this reason, similarly, a gear value for indicating time or seconds is provided around the second knob 22, for example, 0.5, 1 to 24. In order to facilitate the external display of the long delay tripping or over-temperature tripping of the circuit breaker, a long delay indicator light 20 is provided accordingly, wherein the flashing of the indicator light 20 indicates that a long delay tripping or over-temperature tripping has occurred.

[0044] Furthermore, a third knob 31 for setting the short-delay setting current value of the release 100 and a fourth knob 32 for setting the short-delay time of the release are provided on the front panel 11 of the electronic release 100, wherein the setting value of the short-delay setting is expressed as a multiple, ranging from 1.5 to 10 times the long-delay setting current setting value, and for this purpose, a gear value for indicating the multiple is provided around the third knob 31, for example, 1.0, 2 to 10. Similarly, the short-delay time is selected together with one of the two short-delay curves (definite time, or I2t). Here, the time-limited curve has 6 setting values ​​ranging from 0.05 seconds (minimum time) to 0.5 seconds; the I2t inverse time has 4 setting values ​​ranging from 0.1 seconds (minimum time) to 0.5 seconds, so two gear values ​​for indicating time are arranged around the fourth knob 32, which are 0, 0.1 to 0.5 and 0.1 to 0.5 respectively. In order to facilitate the external display of the short-delay tripping or mechanism error of the circuit breaker, a short-delay indicator light 30 is provided accordingly, wherein the flashing of the indicator light 30 indicates that a short-delay tripping or mechanism error has occurred.

[0045] Furthermore, a fifth knob 41 for setting the instantaneous set current value is provided on the front panel 11 of the electronic release 100, wherein the instantaneous (Ii) setting value is expressed in multiples, ranging from 2 to 15 times the (In) value, and can also be set to "OFF". Instantaneous protection causes the circuit breaker to trip without artificial delay. For this reason, gear values ​​for indicating multiples are provided around the fifth knob 41, which are 2, 4 to 15, for example, and also have the word OFF. In order to facilitate the external display of the occurrence of instantaneous tripping, on-current tripping or high instantaneous tripping, an instantaneous indicator light 40 is provided accordingly, wherein the flashing of the indicator light 40 indicates that an instantaneous tripping, on-current tripping or high instantaneous tripping has occurred.

[0046] Finally, a sixth knob 51 for setting the ground fault current value and a seventh knob 52 for setting the ground fault time are provided on the front panel 11 of the electronic release 100, wherein when the release includes a ground fault protection function, the characteristics of the power distribution system (e.g., system grounding, number of power sources, number and location of grounding points) and the manner and location of the circuit breaker applied to the system must be considered. To ensure proper ground fault device performance and compliance, field tests must be performed to meet national or regional requirements. The ground fault alarm can provide an early warning of a ground fault condition, and the ground fault trip function can provide protection under these conditions. For ground faults, the release can be set to alarm, trip or shut down. Specifically, - set to "OFF" to turn off ground fault detection; - when selecting only alarm, four setting values, such as from 0.2, 0.4 to 1, are provided. These setting values ​​are marked as "Alarm"; - select ground fault detection with tripping action. When selecting detection and tripping, these four setting values, such as from 0.2, 0.4 to 1, are marked as "Trip". For this purpose, the gear value is used in each section. Furthermore, the trip unit provides two different ground fault curves to choose from: definite time (flat) or I2t inverse time. The selective coordination requirements should be met when selecting the curve. Compared with the definite time (flat), the I2t inverse time provides a longer delay for currents below 0.625 times In. Specifically, the delay and curve type are selected on the corresponding knobs, with a range of 0.1 seconds to 0.5 seconds.

[0047] In actual use, it is found that since these knobs often have certain tolerances or idle travel during installation and manufacturing, there is a possibility that the actual gear position of the knob is not completely consistent with the gear value indicated by the arrow. For example, when the user wants to turn the knob from the 0.4 gear position to the 0.5 gear position, the arrow indicates that it has been turned to the 0.5 gear position. At that time, due to the installation and knob tolerance, the knob often stops between 0.4 and 0.5, and the actual setting gear is still 0.4. At this time, if you want to verify the actual gear position of the knob, you can only connect a computer or other host computer to the electronic release, and use the host computer software to read the knob gear information for comparison. This means that the electronic release needs to be disconnected from the frame circuit breaker, and then the user needs to connect to the host computer and install the host computer software for operation. These processes are very cumbersome and time-consuming, which brings a bad experience to users.

[0048] To this end, by means of the control instructions pre-stored in the control unit of the electronic release 100, the following method for verifying the gear value of the electronic release 100 can be executed, specifically:

[0049] In step A, the reset button 13 may be actuated by the user to clear the operation of all the above indicator lights 20-50, for example, the user may long press the reset button 13 for more than 3 seconds to clear the operation of all the above indicator lights 20-50, and the long press signal is known by the control unit and automatically starts the control instruction pre-stored in the control unit of the electronic release 100 and immediately enters the next step B;

[0050] In step B, each group of knobs can be used to check the gear position of the knobs of the respective group, specifically as follows: the control unit receives the gear position signal from at least one group of knobs and processes the gear position signal, and obtains the first indication value and the second indication value according to the processing result. For different groups of knobs, the steps of checking are slightly different. Preferably, for Figure 1-3 For the first knob 21 for setting the long delay setting current value of the release 100 and the second knob 22 for setting the long delay time of the release, the control unit will obtain the gear value based on the actual position of the first knob 21 and the second knob 22, which can be achieved by means of the position sensor or electric contact sheet of the first knob 21 and the second knob 22, etc., which is well known to those skilled in the art and will not be described in detail here. After the control unit obtains the actual gear value of the first knob 21 and the second knob 22, for example, the actual gear value of the first knob 21 is 0.4 (due to the existence of idle travel, it may be different from the scale value indicated by the arrow on it), and the actual gear value of the second knob 22 is 0.5, the control unit then sums the actual gear values ​​of the first knob 21 and the second knob 22, that is, the sum obtained at this time is 0.9. The leftmost digit of the obtained value is defined as the highest digit and the rightmost digit of the obtained value is defined as the lowest digit. At this time, the highest digit is 0 and the lowest digit is 9. Then, these positions are respectively set as the first indication value and the second indication value to be used later. At this time, the first indication value is 0 and the second indication value is 9. Similarly, for the third knob 31 used to set the short-delay setting current value of the release and the fourth knob 32 used to set the short-delay time of the release 100, at this time, since it is assumed that the actual gear value of the third knob 31 is 1.5 and the actual gear value of the fourth knob 32 is 0, the sum of the two is 1.5 and the highest digit is 1 and the lowest digit is 5. At this time, the first indication value is 1 and the second indication value is 5. Further, for the fifth knob 41 used to set the instantaneous setting current value, since there is no knob for setting the time, another acceleration is set to 0 by default at this time, especially if the knob 41 is turned to OFF, then the value of the fifth knob 41 is also output as 0. Figure 2In this case, assuming that the actual gear value of the fifth knob 41 is 2 (the gear value of the time is always 0 by default), the sum of the two is 2, the value of the highest bit is 2, and the value of the lowest bit is 0. At this time, the first indication value is 2 and the second indication value is 0. Finally, for the sixth knob 51 for setting the ground fault current value and the seventh knob 52 for setting the ground fault time, at this time, since the actual gear value of the sixth knob 51 is 0.2 and the actual gear value of the seventh knob 52 is 0.1, the sum of the two is 0.3, the value of the highest bit is 0, and the value of the lowest bit is 3. At this time, the first indication value is 0 and the second indication value is 3.

[0051] Next, the next step C is entered. In step C, the first indication value and the second indication value obtained in step B are sent to the corresponding indicator light, wherein the indicator light is illuminated in a first lighting mode according to the received first indication value and also in a second lighting mode according to the received second indication value, wherein the first lighting mode is different from the second lighting mode to allow the user to verify the gear position of the knob in the releaser. Specifically, for the long-delay indicator light 20 used to indicate the occurrence of a long-delay tripping or an over-temperature tripping, the first lighting mode here is designed to flash once per second, wherein the number of flashes is equal to the highest bit value of the sum of the gear values ​​(i.e., the first indication value), wherein the second lighting mode is designed to flash twice per second, wherein the number of flashes is equal to the lowest bit value of the sum of the gear values ​​(i.e., the second indication value). For the long-delay indicator light 20 used to indicate the occurrence of a long-delay tripping or an over-temperature tripping, the first lighting mode here is designed to flash once per second, wherein the number of flashes is equal to the highest bit value of the sum of the gear values ​​(i.e., the second indication value). Figure 2 For the release 100 shown in the figure, it is first determined whether to flash in the first light-emitting mode and the number of flashes is determined according to the first indication value obtained. Since the first indication value is 0 in this embodiment, the long-delay indicator light 20 does not flash slowly at a frequency of once per second at this time, but after a reasonable time, the long-delay indicator light 20 flashes quickly 9 times at a frequency of twice per second. At this time, the user knows that the sum of the actual gear values ​​of the first knob 21 and the second knob 22 should be 0.9, which is consistent with the scale values ​​indicated by the arrows of the knobs 21 and 22, so the user knows that the calibration of the two buttons is correct and qualified.

[0052] Next, for the short-delay indicator light 30 used to indicate the occurrence of a short-delay trip or a mechanism error, the first indication value at this time is 1 and the second indication value is 5. Therefore, it is first determined whether to flash in the first light-emitting mode and the number of flashes is determined based on the first indication value obtained. Since the first indication value in this embodiment is 1, the short-delay indicator light 30 will flash slowly once per second at this time, and after a reasonable time, the short-delay indicator light 30 will flash quickly 5 times at a frequency of twice per second. At this time, the user knows that the sum of the actual gear values ​​of the third knob 31 and the fourth knob 32 should be 1.5, which is consistent with the scale values ​​indicated by the arrows of the third knob 31 and the fourth knob 32, so the user knows that the calibration of these two buttons is correct and qualified.

[0053] Next, for the instantaneous indicator light 40 used to indicate the occurrence of instantaneous tripping, current tripping or high instantaneous tripping, the first indication value is 2 and the second indication value is 0. At this time, the instantaneous indicator light 40 will flash twice at a frequency of once per second, and after a reasonable time, the instantaneous indicator light 40 will not flash twice per second. At this time, the user knows that the sum of the actual gear values ​​of the fifth knob 41 should be 2, which is inconsistent with the scale value currently indicated by the arrow of the fifth knob 41, so the user knows that the calibration of this button is unqualified. It needs to be recalibrated by professionals.

[0054] Finally, the grounding indicator light 50 used to indicate the occurrence of grounding tripping or grounding alarm has a first indication value of 0 and a second indication value of 3. Therefore, it is first determined whether to flash in the first lighting mode and the number of flashes is determined based on the first indication value obtained. Since the first indication value is 0 in this embodiment, the grounding indicator light 50 does not flash slowly at a frequency of once per second at this time, but flashes quickly 3 times at a frequency of twice per second after a reasonable time. At this time, the user knows that the sum of the actual gear values ​​of the sixth knob 51 for setting the grounding fault current value and the seventh knob 52 for setting the grounding fault time should be 0.3, which is inconsistent with the scale values ​​indicated by the arrows of the knobs 51 and 52, so the user knows that the calibration of this button is unqualified. It needs to be recalibrated by professionals.

[0055] It should also be pointed out that even if different gear values ​​are added together, the same sum may still exist. For example, when the gear values ​​of knob 21 and knob 22 are 0.4 and 0.5 respectively, and the gear values ​​of knob 21 and knob 22 are 0.5 and 0.4 respectively, the first and second indication values ​​obtained are both 0.9, so the flashing mode of the indicator light is the same. However, since the comparison object for the user to judge and verify at this time is the scale pointed to by the knob arrow, such a situation does not affect the accuracy of the verification.

[0056] Next, step D is entered. After the verification is completed, these indicator lights are lit in the third lighting mode to notify the user that the verification step has been completed. Specifically, the third lighting mode is designed to flash twice at a frequency of once per second to notify the user that the verification step has been completed. That is, the long delay indicator light 20, the short delay indicator light 30, the instantaneous indicator light 40 and the ground indicator light 50 flash twice at a frequency of once per second to notify the user that the verification step has been completed.

[0057] Through the above method, a method for checking the knob position of the knob-type electronic release in a simpler, more intuitive and low-cost manner is provided for the user. This allows the user to quickly visually check whether the knob is rotated to the desired position without disconnecting the electronic release from the frame circuit breaker, thereby improving the user-friendliness of the knob-type electronic release.

[0058] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0059] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A method for checking the knob position in a release, wherein the release comprises: - a body with a front panel and a rear shell, wherein the front panel has at least one set of knobs for operating or setting the working parameters of the electronic release, indicator lights corresponding to the knobs, and a reset button for clearing the indicator light operation; - a control unit configured to receive a gear position signal from at least one set of knobs and send a processed indication signal to the indicator light, wherein the method comprises the following steps: Step A, actuating the reset button to clear the operation of the indicator light; Step B, the control unit receives the gear position signals from at least one group of knobs and performs data processing on the gear position signals, and obtains a first indication value and a second indication value according to the processing results; Step C, sending the first indication value and the second indication value to the indicator light, wherein the indicator light is illuminated in a first lighting mode according to the received first indication value and is also illuminated in a second lighting mode according to the received second indication value, wherein the first lighting mode is different from the second lighting mode to allow the user to verify the gear position of the knob in the release; Step D: After the verification is completed, the indicator light is lit in the third lighting mode to notify the user that the verification step has been completed.

2. The method according to claim 1, characterized in that The at least one group of knobs comprises a first knob for setting a long-delay set current value of the release and a second knob for setting a long-delay time of the release, wherein the indicator light is a long-delay indicator light configured to indicate the occurrence of a long-delay tripping or an over-temperature tripping, wherein the first indication value in step B is the highest bit value of the sum of the gear value of the first knob and the gear value of the second knob, and the second indication value is the lowest bit value of the sum of the gear value of the first knob and the gear value of the second knob.

3. The method according to claim 2, characterized in that The at least one group of knobs further comprises a third knob for setting the short-delay set current value of the release and a fourth knob for setting the short-delay time of the release, and further comprises a short-delay indicator light configured to indicate the occurrence of a short-delay trip or a mechanism error, wherein the short-delay indicator light is also configured to implement steps B, C and D, wherein the first indication value in step B is the highest bit value of the sum of the gear value of the third knob and the gear value of the fourth knob, and the second indication value is the lowest bit value of the sum of the gear value of the third knob and the gear value of the fourth knob.

4. The method according to claim 3, characterized in that The at least one group of knobs further comprises a fifth knob for setting an instantaneous set current value, and further comprises an instantaneous indicator light configured to indicate the occurrence of an instantaneous trip, an on-current trip or a high instantaneous trip, wherein the instantaneous indicator light is also configured to implement steps B, C and D, wherein the first indication value in step B is the highest bit value of the gear value of the fifth gear value and the second indication value is zero.

5. The method according to claim 4, characterized in that The at least one group further includes a sixth knob for setting a ground fault current value and a seventh knob for setting a ground fault time, and further includes a ground indicator light configured to indicate the occurrence of a ground trip or a ground alarm, wherein the ground indicator light is also configured to implement steps B, C, and D, wherein the first indication value in step B is the highest bit value of the sum of the gear value of the sixth knob and the gear value of the seventh knob, and the second indication value is the lowest bit value of the sum of the gear value of the sixth knob and the gear value of the seventh knob.

6. The method according to claim 5, characterized in that The first light-emitting mode is designed to flash once per second, wherein the number of flashes is equal to the value of the highest bit of the sum of the gear values, and the second light-emitting mode is designed to flash twice per second, wherein the number of flashes is equal to the value of the lowest bit of the sum of the gear values.

7. The method according to claim 6, characterized in that The third lighting pattern is designed to flash twice at a frequency of once per second to notify the user that the verification step has been completed.

Images