CN112978537A - Protection method for elevator band-type brake fault - Google Patents
Protection method for elevator band-type brake fault Download PDFInfo
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- CN112978537A CN112978537A CN202110289450.7A CN202110289450A CN112978537A CN 112978537 A CN112978537 A CN 112978537A CN 202110289450 A CN202110289450 A CN 202110289450A CN 112978537 A CN112978537 A CN 112978537A
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- brake controller
- processing response
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0025—Devices monitoring the operating condition of the elevator system for maintenance or repair
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/093—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/10—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current additionally responsive to some other abnormal electrical conditions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/207—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage also responsive to under-voltage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Elevator Control (AREA)
Abstract
The invention belongs to the technical field of elevator equipment, and particularly provides a method for protecting an elevator brake fault, which comprises the following steps: classifying the band-type brake fault of the elevator according to the severity of the fault so as to divide the band-type brake fault into a plurality of fault classes; detecting a fault and judging the fault grade by a band-type brake controller so as to start corresponding processing response, wherein the processing response is also graded, and the graded processing response corresponds to the fault grade one by one; and the band-type brake controller outputs the fault signal to an elevator control system, wherein the fault signal is also classified, and the classified fault signal corresponds to the fault grade one to one. The invention can make the operation of the elevator more reasonable and effectively reduce the occurrence of people trapping of the elevator.
Description
Technical Field
The invention belongs to the technical field of elevator equipment, and particularly relates to a method for protecting an elevator band-type brake fault.
Background
In the traditional technical scheme, the band-type brake controller used by the elevator has protection functions of overcurrent, overvoltage and the like, and when the band-type brake controller detects an abnormal condition, the elevator enters a protection mode, namely, the output of a band-type brake power supply is cut off, so that the elevator is emergently braked to stop running. However, in this case, the elevator is very likely to be trapped.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a method for protecting the elevator brake fault, so that the operation of the elevator can be more reasonable, and the occurrence of the elevator trapping situation is effectively reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a protection method for elevator band-type brake faults comprises the following steps:
classifying the band-type brake fault of the elevator according to the severity of the fault so as to divide the band-type brake fault into a plurality of fault classes;
detecting a fault and judging the fault grade by a band-type brake controller so as to start corresponding processing response, wherein the processing response is also graded, and the graded processing response corresponds to the fault grade one by one;
and the band-type brake controller outputs the fault signal to an elevator control system, wherein the fault signal is also classified, and the classified fault signal corresponds to the fault grade one to one.
Further, when the contracting brake controller detects any fault of input overvoltage, output overcurrent and output short circuit, the fault is divided into a first fault grade, and at the moment, first-stage processing response is started;
the first-stage processing response comprises that the contracting brake controller disconnects the output of a contracting brake power supply, and the contracting brake enters a working state to stop the elevator from running; and at the moment, the contracting brake controller generates a grade-one fault signal and sends the grade-one fault signal to the elevator control system.
Further, after the first-stage processing response is started, if the continuous occurrence frequency of the first fault level is less than a first preset frequency, the contracting brake controller is put into normal operation again after a preset time interval; otherwise, the contracting brake controller keeps the disconnecting state of the contracting brake power supply and keeps outputting a grade I fault signal to the elevator control system.
Further, when the contracting brake controller detects any fault of input under-voltage and output under-current, the fault is divided into a second fault grade, and at the moment, second-stage processing response is started;
the second-stage processing response comprises that the contracting brake controller maintains the output of a contracting brake power supply and generates a second-stage fault signal to the elevator control system; if the elevator is in a high-speed running state, outputting a signal to control the elevator to return to a leveling position in a low-speed running state; at the moment, if the elevator is in a low-speed running state, the elevator continues to run until the band-type brake enters a working state.
Further, after the second-stage processing response is started, if the continuous occurrence frequency of the second fault level is less than a second preset frequency, the contracting brake controller is put into normal operation again after a preset time interval; otherwise, the contracting brake controller keeps the disconnecting state of the contracting brake power supply and keeps outputting a grade I fault signal to the elevator control system.
Further, when the contracting brake controller detects any fault of contracting brake overload and output current abnormity, the fault is divided into a third fault grade, and a third-stage processing response is started at the moment;
and the third-stage processing response comprises that the contracting brake controller maintains the output of a contracting brake power supply and generates a grade three fault signal to the elevator control system, and the elevator control system sends an instruction to enable the elevator to return to the leveling position nearby.
Further, after the third-stage processing response is started, if the continuous occurrence frequency of the third fault level is less than a third preset frequency, the contracting brake controller is put into normal operation again after a preset time interval; otherwise, the contracting brake controller keeps the disconnecting state of the contracting brake power supply and keeps outputting a grade I fault signal to the elevator control system.
Further, when the contracting brake controller detects that the contracting brake current zero point is abnormal, the contracting brake current zero point is divided into a fourth fault grade, and a fourth-stage processing response is started at the moment;
and the fourth-stage processing response comprises the self-adaptive correction of the contracting brake control parameters by the contracting brake controller, and the generation of a fourth-stage fault signal to the elevator control system, wherein the elevator control system prompts maintenance personnel to check the contracting brake controller in the next maintenance period.
And further, after the fourth-stage processing response is started, the contracting brake controller monitors the fault condition in real time, and after the fault condition is eliminated, the contracting brake controller outputs a fourth-stage fault signal to the elevator control system.
Further, the relationship among the first preset number of times, the second preset number of times, and the third preset number of times is:
the first preset times is less than or equal to the second preset times and less than or equal to the third preset times.
Compared with the prior art, the invention has the beneficial effects that:
in the scheme, the band-type brake fault of the elevator is classified according to the severity of the fault, corresponding processing responses are set for the fault grades of different grades, and corresponding fault signals are generated and output to the elevator control system to form detailed linkage between the band-type brake controller and the elevator control system; meanwhile, when the contracting brake controller detects a fault condition, the contracting brake working state does not need to be executed again as in the conventional technology so that the elevator stops running at once, thereby effectively reducing or even avoiding the occurrence of the condition that the elevator is trapped by people and controlling the running of the elevator more carefully and reasonably.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a band-type brake controller according to the present invention.
FIG. 2 is a schematic diagram of the determination process of the protection method of the present invention.
Wherein:
the fault detection circuit comprises a band-type brake controller 1, a driving signal input module 2, an input voltage sampling module 3, a main chip 4, a rectifying module 5, a driving module 6, an output current sampling module 7 and a fault signal output module 8.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
As shown in fig. 1 and fig. 2, the method for protecting an elevator brake fault provided in this embodiment can be applied to a brake controller 1, and referring to fig. 1, the brake controller 1 provided in this embodiment includes a driving signal input module 2, an input voltage sampling module 3, a main chip 4, a rectifying module 5, a driving module 6, an output current sampling module 7, and a fault signal output module 8.
Specifically, the driving signal input module 2 is mainly used for receiving a brake driving signal of an elevator control system.
And the input voltage sampling module 3 is used for monitoring the magnitude of the input power supply voltage so as to feed back the magnitude to the main chip 4.
The main chip 4 is used for receiving signals of the input voltage sampling module 3 and the output current sampling module 7, judging whether conditions such as input overvoltage, output overcurrent, output short circuit, input undervoltage, output undercurrent, brake overload, output current abnormity, zero point abnormity of brake current and the like exist, outputting a fault signal to the fault signal output module 8, receiving a brake driving signal of the driving signal input module 2, controlling the contactor to be connected or disconnected with a brake output loop, and generating or stopping a PWN wave signal to the driving module 6 so as to open or release the brake. After the fault condition disappears, if the occurrence frequency of the continuous faults does not exceed the preset frequency, waiting for the preset time, and canceling to output the fault signal to the fault signal output module 8.
And the rectifying module 5 is used for rectifying the alternating current input power into a direct current power.
The driving module 6 may use a metal-oxide semiconductor field effect transistor (MOS) or an Insulated Gate Bipolar Transistor (IGBT), and is configured to perform chopper control on the rectified dc power supply according to the PWN signal output by the main chip 4, output an instruction current to the internal contracting brake device, and open the internal contracting brake.
And the output current sampling module 7 is used for monitoring the magnitude of the output current and feeding the magnitude back to the main chip 4.
And the fault signal output module 8 is used for outputting a fault signal to the elevator control system.
Further, the protection method for the elevator brake fault provided in this embodiment specifically includes the following steps:
and S10, classifying the band-type brake faults of the elevator according to the severity of the faults so as to be classified into a plurality of fault classes, wherein the fault classes comprise a first fault class, a second fault class, a third fault class and a fourth fault class. When the contracting brake controller 1 detects any fault of input overvoltage, output overcurrent and output short circuit, the fault is divided into a first fault grade; when the contracting brake controller 1 detects any fault of input under-voltage and output under-current, the fault is divided into a second fault grade; when the contracting brake controller 1 detects any fault of contracting brake overload and output current abnormity, the fault is divided into a third fault grade; and when the contracting brake controller 1 detects that the current zero point of the contracting brake is abnormal, the current zero point is divided into a fourth fault level.
S20, detecting the fault and judging the fault grade by the contracting brake controller 1 to start corresponding processing response, wherein the processing response is also graded, and the graded processing response is in one-to-one correspondence with the fault grade; the processing response comprises a first-stage processing response, a second-stage processing response, a third-stage processing response and a fourth-stage processing response.
S30, the contracting brake controller 1 outputs a fault signal to an elevator control system, wherein the fault signal is also classified, and the classified fault signal corresponds to the fault grade one by one; the fault signals include a class one fault signal, a class two fault signal, a class three fault signal, and a class four fault signal.
Further, the first-stage processing response comprises that the contracting brake controller 1 disconnects the output of the contracting brake power supply, and the contracting brake enters a working state to stop the elevator from running; at this time, the band-type brake controller 1 generates a grade one fault signal and sends the grade one fault signal to the elevator control system. After the first-stage processing response is started, if the continuous occurrence frequency of the first fault grade is less than a first preset frequency, the contracting brake controller 1 is put into normal operation again after a preset time interval; otherwise, the contracting brake controller 1 keeps the disconnecting state of the contracting brake power supply and keeps outputting a grade I fault signal to the elevator control system.
The second-stage processing response comprises that the contracting brake controller 1 maintains the output of a contracting brake power supply and generates a second-stage fault signal to the elevator control system; if the elevator is in a high-speed running state, outputting a signal to control the elevator to return to a leveling position in a low-speed running state; at the moment, if the elevator is in a low-speed running state, the elevator continues to run until the band-type brake enters a working state. After the second-stage processing response is started, if the continuous occurrence frequency of the second fault level is less than a second preset frequency, the contracting brake controller 1 is put into normal operation again after a preset time interval; otherwise, the contracting brake controller 1 keeps the disconnecting state of the contracting brake power supply and keeps outputting a grade I fault signal to the elevator control system.
The third-stage processing response comprises that the contracting brake controller 1 maintains the output of a contracting brake power supply and generates a grade three fault signal to the elevator control system, and the elevator control system sends an instruction to enable the elevator to return to the leveling position nearby. After the third-stage processing response is started, if the continuous occurrence frequency of the third fault level is less than a third preset frequency, the contracting brake controller 1 is put into normal operation again after a preset time interval; otherwise, the contracting brake controller 1 keeps the disconnecting state of the contracting brake power supply and keeps outputting a grade I fault signal to the elevator control system.
The fourth-stage processing response comprises the steps that the contracting brake controller 1 carries out self-adaptive correction on contracting brake control parameters, a fourth-stage fault signal is generated and sent to the elevator control system, and the elevator control system prompts maintenance personnel to check the contracting brake controller 1 during the next maintenance. After the fourth-stage processing response is started, the contracting brake controller 1 monitors the fault condition in real time, and when the fault condition is eliminated, the contracting brake controller is removed to output a fourth-stage fault signal to the elevator control system.
As a preferable scheme, the relationship among the first preset number, the second preset number and the third preset number is as follows: the first preset times is less than or equal to the second preset times and less than or equal to the third preset times. In this embodiment, the first preset number of times is 3 times, the second preset number of times is 6 times, and the third preset number of times is 12 times; the preset time is 10 seconds.
In order to facilitate further understanding of the scheme, referring to fig. 2, as one application example, it may be first determined whether an overvoltage phenomenon exists in the input voltage, and if the overvoltage phenomenon exists, the output loop of the band-type brake power supply is disconnected, the band-type brake is released, the elevator stops operating, and a level-one fault signal is output to the elevator control system, so that the process is ended.
If the input voltage has no overvoltage phenomenon, whether the input voltage has an undervoltage phenomenon or not is continuously judged, and if the input voltage has the undervoltage phenomenon, a secondary fault signal of the grade is output to the elevator control system.
Under the condition that the voltage is normal or under-voltage is input, if a band-type brake driving signal of an elevator control system is received, a band-type brake output loop is switched on, if the band-type brake controller 1 does not start to drive the band-type brake, the band-type brake output loop is switched on through a contactor, whether an output short circuit phenomenon exists or not is judged, if the output short circuit phenomenon exists, the band-type brake output loop is switched off, the band-type brake is released, the elevator stops running, a grade-I fault signal is output to the elevator control system, and the process is ended.
If the output short circuit phenomenon does not exist, the main chip 4 generates PWN waves, a band-type brake is opened, then whether the output current exceeds the maximum allowable output current of the band-type brake controller 1 or not is judged, if the output current of the band-type brake exceeds the maximum allowable output current, the output current is judged to be output overcurrent, at the moment, a band-type brake output loop is immediately disconnected, the band-type brake is released, the elevator stops running, a grade-I fault signal is output to an elevator control system, and the process is finished.
If the output current of the band-type brake is smaller than the maximum allowable output current, judging whether the output current is smaller than the rated output current of the band-type brake device, if the output current is smaller than 80% of the rated output current of the band-type brake device, judging that an undercurrent is output, and outputting a secondary fault signal to an elevator control system while maintaining the output of the band-type brake current by the band-type brake controller 1.
If the phenomenon of outputting the undercurrent does not exist, judging whether the duty ratio of the PWN wave is larger than a preset value or not, in one embodiment, if the actual output duty ratio of the PWN wave is larger than 120% of the rated output duty ratio of the band-type brake device, judging that the output current is abnormal, and outputting a grade three-fault signal to an elevator control system while maintaining the output of the band-type brake current by the band-type brake controller 1; preferably, at the moment, the elevator control system instructs the elevator to close to the flat floor, stop and open the door, and does not respond to the elevator calling instruction.
If the output current is abnormal, calculating the brake output power as the output current multiplied by the brake impedance, and then judging whether the output power exceeds a preset value, in one embodiment, if the average value of the brake output power within 10 seconds is greater than 120% of the rated power of the brake device, judging that the brake is overloaded, and outputting a grade three fault signal to an elevator control system while the brake controller 1 maintains the brake current output. Preferably, at the moment, the elevator control system instructs the elevator to close to the flat floor, stop and open the door, and does not respond to the elevator calling instruction.
If the contracting brake controller 1 does not receive the contracting brake driving signal of the elevator control system, the contracting brake output loop is disconnected, the contracting brake is released, and then the average value of the contracting brake output current is calculated and used for correcting the current value collected by the output current sampling module 7. And if the average value of the current output by the band-type brake is larger than the preset value, outputting a grade four-fault signal to an elevator control system. In one embodiment, the elevator control system prompts a maintenance person to check the band-type brake controller during the next maintenance.
In one embodiment, after the band-type brake controller 1 outputs the fault signal to the elevator control system, it is continuously determined whether the fault phenomenon exists, and if the fault phenomenon does not exist and the continuous occurrence frequency of the fault is less than the preset times, the fault signal is removed to the elevator control system after 10 seconds. At this point, the elevator control system returns the elevator to normal operation.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A protection method for elevator brake faults is characterized by comprising the following steps:
classifying the band-type brake fault of the elevator according to the severity of the fault so as to divide the band-type brake fault into a plurality of fault classes;
detecting a fault and judging the fault grade by a band-type brake controller so as to start corresponding processing response, wherein the processing response is also graded, and the graded processing response corresponds to the fault grade one by one;
and the band-type brake controller outputs the fault signal to an elevator control system, wherein the fault signal is also classified, and the classified fault signal corresponds to the fault grade one to one.
2. The method for protecting the elevator brake fault according to claim 1, wherein when any fault of input overvoltage, output overcurrent and output short circuit is detected by the brake controller, the fault is classified into a first fault level, and a first-stage processing response is started;
the first-stage processing response comprises that the contracting brake controller disconnects the output of a contracting brake power supply, and the contracting brake enters a working state to stop the elevator from running; and at the moment, the contracting brake controller generates a grade-one fault signal and sends the grade-one fault signal to the elevator control system.
3. The method for protecting the elevator brake fault according to claim 2, wherein after the first-stage processing response is started, if the continuous occurrence frequency of the first fault level is less than a first preset frequency, the brake controller is put into normal operation again after a preset time interval; otherwise, the contracting brake controller keeps the disconnecting state of the contracting brake power supply and keeps outputting a grade I fault signal to the elevator control system.
4. The method for protecting the elevator brake fault according to claim 3, wherein when the brake controller detects any one of an input under-voltage fault and an output under-current fault, the fault is classified into a second fault level, and a second-level processing response is started;
the second-stage processing response comprises that the contracting brake controller maintains the output of a contracting brake power supply and generates a second-stage fault signal to the elevator control system; if the elevator is in a high-speed running state, outputting a signal to control the elevator to return to a leveling position in a low-speed running state; at the moment, if the elevator is in a low-speed running state, the elevator continues to run until the band-type brake enters a working state.
5. The method for protecting the elevator brake fault according to claim 4, wherein after the second-stage processing response is started, if the continuous occurrence frequency of the second fault level is less than a second preset frequency, the brake controller is put into normal operation again after a preset time interval; otherwise, the contracting brake controller keeps the disconnecting state of the contracting brake power supply and keeps outputting a grade I fault signal to the elevator control system.
6. The method for protecting the elevator brake fault according to claim 5, wherein when the brake controller detects any fault of the overload and the abnormal output current of the brake, the fault is classified into a third fault level, and a third-level processing response is started;
and the third-stage processing response comprises that the contracting brake controller maintains the output of a contracting brake power supply and generates a grade three fault signal to the elevator control system, and the elevator control system sends an instruction to enable the elevator to return to the leveling position nearby.
7. The method for protecting the elevator brake fault according to claim 6, wherein after the third-level processing response is started, if the continuous occurrence frequency of the third fault level is less than a third preset frequency, the brake controller is put into normal operation again after a preset time interval; otherwise, the contracting brake controller keeps the disconnecting state of the contracting brake power supply and keeps outputting a grade I fault signal to the elevator control system.
8. The method for protecting the elevator brake fault according to claim 7, wherein when the brake controller detects that the current zero point of the brake is abnormal, the fault is classified into a fourth fault level, and a fourth-level processing response is started;
and the fourth-stage processing response comprises the self-adaptive correction of the contracting brake control parameters by the contracting brake controller, and the generation of a fourth-stage fault signal to the elevator control system, wherein the elevator control system prompts maintenance personnel to check the contracting brake controller in the next maintenance period.
9. The method for protecting the elevator brake fault according to claim 8, wherein after the fourth-stage processing response is started, the brake controller monitors the fault condition in real time, and when the fault condition is eliminated, the brake controller removes and outputs a fourth-stage fault signal to the elevator control system.
10. The method for protecting against elevator brake fault according to any one of claims 7 to 9, wherein the relationship between the first preset number, the second preset number and the third preset number is as follows:
the first preset times is less than or equal to the second preset times and less than or equal to the third preset times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110289450.7A CN112978537B (en) | 2021-03-18 | 2021-03-18 | Protection method for elevator band-type brake fault |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110289450.7A CN112978537B (en) | 2021-03-18 | 2021-03-18 | Protection method for elevator band-type brake fault |
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| CN112978537A true CN112978537A (en) | 2021-06-18 |
| CN112978537B CN112978537B (en) | 2022-09-27 |
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| CN202110289450.7A Active CN112978537B (en) | 2021-03-18 | 2021-03-18 | Protection method for elevator band-type brake fault |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113911872A (en) * | 2021-10-12 | 2022-01-11 | 北京沃东天骏信息技术有限公司 | Fault processing method and system and early warning and rescue system |
| CN114655806A (en) * | 2022-03-15 | 2022-06-24 | 苏州汇川控制技术有限公司 | Elevator equipment, band-type brake power supply, monitoring method of band-type brake and system thereof |
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