KR20140030857A - Stage equipment, wire rope derailed when the motor and load protection device - Google Patents

Stage equipment, wire rope derailed when the motor and load protection device Download PDF

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Publication number
KR20140030857A
KR20140030857A KR1020120097543A KR20120097543A KR20140030857A KR 20140030857 A KR20140030857 A KR 20140030857A KR 1020120097543 A KR1020120097543 A KR 1020120097543A KR 20120097543 A KR20120097543 A KR 20120097543A KR 20140030857 A KR20140030857 A KR 20140030857A
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KR
South Korea
Prior art keywords
converter
phase
main controller
wire rope
motor
Prior art date
Application number
KR1020120097543A
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Korean (ko)
Inventor
최갑기
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최갑기
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Priority to KR1020120097543A priority Critical patent/KR20140030857A/en
Publication of KR20140030857A publication Critical patent/KR20140030857A/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
    • 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
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/0822—Integrated protection, motor control centres

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

The present invention relates to a motor and a load protection device when the wire rope of stage equipment is derailed. According to the embodiment of the present invention, in the present invention, a main part includes a key board which outputs a selected corresponding key signal, a main controller, an LCD display part which displays an information signal corresponding to an output signal controlled by the main controller, a first convertor which converts the output signal controlled by the main controller and applies it to a power control part, a second convertor which converts the output signal controlled by the main controller and applies it to a relay control part, a third converter which converts the output signal controlled by the main controller and applies it to a forth converter, and a monitoring control plate for a signal outputted from the third converter. [Reference numerals] (10) Main control part; (20) Power source control part; (30) Detection part; (40) Relay control part; (AA) Power control part; (BB) Monitoring control part

Description

Stage equipment, wire rope derailed when the motor and load protection device}

The present invention relates to a motor and a load protection device when the wire rope of the stage device is derailed. More specifically, the starting current flowing after the start of the driving motor for raising or lowering the stage lighting baton and the set baton starts to fall from the highest value. When the current value rises abnormally in any situation in which the rated current flows, the range of the predetermined level (less than 2 seconds) and the predetermined level (110% to 120%) is reached. It can be caused by the derailment of the winding rope on the load side and the wire rope connected to the multiple rollers or the burnout of the rollers by operating at a predetermined time (within 1 second) or when the predetermined level (120%) is exceeded. When the wire rope of the stage equipment is derailed to prevent secondary safety accidents due to warp or fall of the baton, breakage of the ceiling, breakage of the wire rope, etc. And it relates to a protective device.

As is well known, a stage device installed in a ceiling of a stage such as a performance hall or various event halls, a broadcasting station, or a school auditorium is configured by fixing a frame horizontally to a ceiling of a stage, as shown in FIG. On the frame constituting such a stage device 1, a lifting device 2 for winding a wire rope 4 on which various stage facilities are suspended and a plurality of rollers 3 for guiding a plurality of wire ropes 4 are provided. It is usually installed, the various baton (5), such as placard baton, border light baton, suspension light baton and contour curtain baton is installed on the bottom of the wire rope 4, the lifting device (2) is a motor and a reducer And a winding drum.

 Therefore, if the corresponding lifting device 2 is selected and operated according to the purpose of performance or various events, the winding drum is rotated forward and backward by driving the motor and the reducer, so that the wire rope 4 on which the stage facility is suspended is wound. It will unravel and raise or lower the stage facility to create lighting while creating a set transition or background.

However, the conventional motor protection relay sets an operating current value in advance and operates when the fixed current value is exceeded.

Hereinafter, in the conventional motor protection relay, for example, an overcurrent flows in a steady state due to the characteristics of the motor and the reducer.

First, due to the characteristics of the speed reducer connected to the motor, a current higher than the rated current flows even after starting, and gradually decreases, and a stable rated current flows after several seconds (about 7 seconds).

The bearing oil of the motor or the reducer oil change in the viscosity of the oil as the temperature changes.

This causes a difference in the rated current of the motor during initial operation in summer and winter, and over current flows more than 110% of the rated current in winter depending on the degree of cooling.

The capacity of the motor used for stage lighting is mainly less than three phase 2.2KW (rated current 5A), the disc brake is DC single phase and the current is about 0.6A.

As a result, about 10% current deviation occurs during the electrostatic and reverse operation depending on the connection method of the three-phase motor and the disc brake.

Depending on the load of the motor load, when the load current rises, the difference is about 1A more than the load current when falling. This corresponds to 20% of the three-phase 2.2KW motor rated current (5A).

As described above, when the overcurrent set value is set within the range of 105% to 110% of the rated current with the conventional motor protection relay, a situation in which the overcurrent set value is exceeded in the normal operation state causes the overcurrent relay to operate, which causes inconvenience in operation. Will occur.

Therefore, in general, set the overcurrent set value as high as 110% ~ 125% of the rated current and set the start delay time (approximately 3-5 seconds) and the operation time (approximately 4-6 seconds) of the overcurrent relay. Overcurrent occurring in about 7 to 11 seconds cannot be detected.

As a result, it is not possible to detect overcurrent in the range of 105% to 110% due to jamming due to wire rope derailment, which may occur when the baton for stage lighting is raised or lowered. Secondary safety accidents caused by breakage of the wire rope or breakage of the wire rope cannot be prevented.

Typically, the lift distance of the stage lighting baton is about 4 ~ 6m, the lifting speed is about 20cm per second, the driving time of the motor is about 20 ~ 30 seconds.

For example, the stage lighting baton moves about 140cm for 7 seconds and 220cm for 11 seconds, and if the jam occurs due to the derailment of the wire rope, if it is not detected and stopped immediately, the batton is distorted or falls. There was a problem that the risk of secondary safety accidents, such as damage to the ceiling, wire rope breakage.

Therefore, the present invention is proposed to solve the above problems of the prior art, the starting current value flowing after the start of the drive motor for raising or lowering the stage lights and the set baton is stable from the start of the fall at the highest level in any situation in which the rated current flows. When the current value increases abnormally at that time, the predetermined time (within 2 seconds) in the range of the predetermined level (105%-110%), the predetermined time (within 1 second) in the range of the predetermined level (110%-120%), or If the predetermined level (120%) is exceeded, it operates for a predetermined time (within 0.1 second), causing warping, falling, or ceiling breakage caused by the derailment of the winding rope on the load side, the wire rope connected to the multiple rollers, or the burnout of the roller. It provides a motor and a load protection device in the case of wire rope derailment of a stage device that prevents the disconnection of the wire rope and prevents secondary safety accidents.

In order to achieve the above object, the present invention provides a lifting device for winding a wire rope on which various stage facilities are suspended on a frame and a plurality of rollers for guiding a plurality of wire ropes, and various battens are installed on the bottom of the wire ropes. In the stage device, the current value detected by the detection unit is analyzed and compared with the preset level when the current value is abnormally increased by the main control unit, and controls to operate within the set time when the predetermined level is exceeded. The control panel is configured to correct the set value at the time of malfunction due to the precise setting by transmitting and receiving the signal, and receives the predetermined DC power applied from the power supply unit, converts the predetermined voltage and phase, and performs parallel conversion control again. To control the motor and driving of the motor. Configured to include a control relay for controlling the operation of the vector control board and power; It is characterized in that it comprises a monitoring control panel configured to perform the operation control and monitoring and protection of the motor at the same time without going to the panel room in which the power control panel is installed for the convenience of operation.

In addition, the present invention, the main controller is a keyboard for outputting the selected key signal, the main controller for controlling the operation of each part, an LCD display for displaying the information signal corresponding to the output signal controlled by the main controller and A first converter converting the output signal controlled by the main controller into USART serial communication and applying it to a power control unit; and a second converter converting the output signal controlled by the main controller into USART serial communication and applying it to the relay controller; A third converter converting the output signal controlled by the main controller into USART serial communication and applying the fourth converter to the fourth converter; and converting the signal output from the third converter to transmit and receive the RS and 485 communication with the supervisory control panel. It characterized in that it comprises a fourth converter.

In addition, the present invention is a power control unit for converting a three-phase AC power to a predetermined DC power supply to supply a voltage / phase converter and a predetermined DC power applied from the power supply to convert a predetermined voltage and phase And a fifth converter for converting a voltage / phase converter and an output signal of the voltage / phase converter in parallel and transmitting the same to the main controller.

In addition, the present invention, the detection unit a plurality of leakage current detector for detecting a leakage current flowing in each drive motor, a plurality of current detector for detecting a normal current flowing in each drive motor, and the phase difference between the phase current generation and reverse phase image formation And first to sixth current / phase converters which control to convert phases of currents detected by the plurality of leakage current detectors and current detectors to sense reverse phase, and outputs from the first to sixth current / phase converters. And a sixth to sixth converter for converting a signal into USART serial communication and applying the signal to the main controller.

In addition, the relay control unit is a plurality of magnet switches for supplying or cutting off the power applied to each drive motor, and the first to the plurality of magnet switches connected to the first to control the up, down or stop operation of each relay; And a seventh relay controller and seventh to sevenf converters converting signals output from the first to sixth relay controllers into USART serial communication and applied to the main controller.

When the wire rope of the stage device according to the present invention made as described above, the motor and the load protection device is stable from the start of the fall at the highest starting current flows after the start of the drive motor for raising or lowering the stage lights and the set baton flows through the rated current Under any circumstances, when the current value is abnormally increased, the predetermined time (within 2 seconds) in the range of the predetermined level (105% to 110%), and the predetermined time (within 1 second within the range of the predetermined level (110% to 120%) ), Or if the level is exceeded (120%), it operates for a predetermined time (within 0.1 seconds), causing warp or fall of the baton that may be caused by a derailment of the wire rope connected to the load side and a plurality of rollers or burnout of the roller, It prevents secondary safety accidents by preventing ceiling breakage and disconnection of wire rope.

1 is a view showing an example of a conventional stage structure.
Figure 2 is a block diagram of a motor and load protection device when the wire rope derailment of the stage apparatus according to the present invention.
Figure 3 is a detailed block diagram of the main control unit in the present invention.
Figure 4 is a detailed block diagram of a power control unit in the present invention.
Figure 5 is a detailed block diagram of the detection unit in the present invention.
6 is a detailed block diagram of a relay controller in the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 shows a block diagram of the motor and load protection device when the wire rope derailment of the stage device according to the present invention, the motor and load protection device when the wire rope derailment of the stage device according to the present invention is shown in Figures 1 and 2 As shown in the drawing, a lifting device 2 for winding a wire rope 4 on which various stage facilities are suspended and a plurality of rollers 3 for guiding a plurality of wire ropes 4 are installed. In the stage apparatus 1 in which various battens 5 are suspended from the lower end of the panel), the current value detected by the detection unit 30 is set to a predetermined level when the current value at that time increases abnormally in the main controller 10. By comparing and analyzing and exceeding the predetermined level, the controller operates to operate within the set time, and transmits and receives through the RS485 communication with the monitoring control panel. It is configured to.

In addition, the power control panel receives a predetermined DC power (5V, 12V, 24V) applied from the power supply unit to convert the predetermined voltage and phase, and then perform a parallel conversion control again to the main control unit 20 and the motor It comprises a relay control unit 40 for controlling the operation of the relay to control the driving of.

3 is a detailed block diagram of the main controller 10 according to the present invention. As shown in FIG. 3, a keyboard 11 for outputting a corresponding key signal selected as shown in FIG. 3 and a main controller for collectively controlling operations of each unit are illustrated. (12), the LCD display unit 13 for displaying the information signal corresponding to the output signal controlled by the main controller 12, and the output signal controlled by the main controller 12 is converted into USART serial communication power supply A first converter 14 applied to the control unit 20, a second converter 15 converting the output signal controlled by the main controller 12 into USART serial communication and applied to the relay control unit 30; A third converter 16 converting the output signal controlled by the main controller 12 into USART serial communication and applying it to the fourth converter 17; and a signal output from the third converter 16 and the supervisory control panel. To transmit and receive via RS 485 communication It is configured to include a fourth transducer (17) to ring.

FIG. 4 is a detailed block diagram of the power control unit 20 according to the present invention. As shown in FIG. 4, a three-phase AC power source (380 V) is converted into a predetermined DC power source (5 V, 12 V, 24 V). A power supply 21 for supplying the phase converter 22, a voltage / phase converter 22 for receiving a predetermined DC power applied from the power supply 21 to convert a predetermined voltage and phase, and the voltage / And a fifth converter 23 which converts the output signal of the phase converter 22 in parallel and transmits the same to the main controller 10.

FIG. 5 is a detailed block diagram of the detector 30 according to the present invention. As shown in FIG. 5, a plurality of leakage current detectors ZCT1 to ZCT6 that detect leakage current flowing through each of the driving motors M1 to M6. ), A plurality of current detectors CT1 to CT18 for detecting a steady current flowing through each of the driving motors M1 to M6, and the plurality of leakage currents to detect phase and reverse phases when current deviations between phases occur and reverse phases occur. First to sixth current / phase converters 31 to 33 for controlling the phases of the currents detected by the detectors ZCT1 to ZCT6 and the current detectors CT1 to CT18, and the first to sixth current / phases; 6 to 6f converters 34 to 36 converting signals output from the converters 31 to 33 into USART serial communication and applied to the main controller 10.

FIG. 6 is a detailed block diagram of the relay controller 40 in the present invention. As shown in FIG. 6, a plurality of magnet switches 41 supplying or cutting off power applied to each of the driving motors M1 to M6. 43 and first to sixth relay controllers 44 to 46 connected to the plurality of magnet switches 41 to 43 to control an up, down or stop operation of each relay (not shown), and 7 to 7f converters 47 to 49 converting signals output from the first to sixth relay controllers 44 to 46 into USART serial communication and applied to the main controller 10.

Reference numerals F1 to F3 in FIG. 4 are fuses, and R, S, and T in FIG. 5 are three-phase power lines.

The operation of the motor and the load protection device when the wire rope derailment of the stage device according to the present invention configured as described above will be described in detail with reference to FIGS. 2 to 6.

First, the stage equipment is divided into stage control room and panel room due to the characteristics of stage lighting. The distance between stage control room and panel room is 20m ~ 50m depending on the size of the performance hall.

A feature of the present invention is, in large part, comprised of a monitoring control panel installed in a stage adjusting room and a power control panel provided in a panel room.

The power control panel compares and analyzes the current value detected by the detector 30 with a predetermined level when the current value of the main controller 10 rises abnormally, and operates to operate within the set time when the power level exceeds the predetermined level. Transmit / receive by RS485 communication with RS485 communication to correct the set value in the monitoring control panel in case of malfunction by precision setting.

In addition, the detection unit 30 in the power control panel includes a plurality of leakage current detectors ZCT1 to ZCT6 for detecting leakage currents flowing to each of the driving motors M1 to M6, and a normal current flowing to each of the driving motors M1 to M6. Multiple current detectors CT1 to CT18 to detect, and leakage current detectors ZCT1 to ZCT6 and current detectors CT1 to CT18 to detect phase and reverse phases when a current deviation between phases and a reverse phase occur. Converts the signals output from the first to sixth current / phase converters 31 to 33 and the first to sixth current / phase converters 31 to 33 to control the phase of the current to USART serial communication. And the sixth to sixth converters 34 to 36 applied to the main controller 10.

In addition, the power control unit 20 in the power control panel receives the predetermined DC power (5V, 12V, 24V) applied from the power supply unit 21 converts the predetermined voltage and phase, and performs a parallel conversion control again, the main control unit 10 ).

In addition, the relay control unit 40 in the power control panel controls the operation of the relay for controlling the driving of the motors M1 to M6.

The supervisory control panel is configured to simultaneously perform operation control, monitoring and protection of the motors M1 to M6 without going to the panel room where the power control panel is installed, to facilitate operational convenience.

Additional features include an overcurrent protection function that operates within 3 seconds of exceeding 115% of the rated current, a restraint protection function that operates within 0.5 seconds when an overcurrent of 200% or more of the rated current continues to flow after the start delay time, and Undercurrent protection function within 3 seconds when 20% or more reduced, Phase unbalance protection function within 3 seconds when current deviation between phases is more than 30%, Phase loss protection function within 0.1 seconds when current deviation between phases is 70% or more, It has reverse phase protection function that operates within 0.15 seconds when reversed phase occurs, and ground fault protection that operates within 0.1 second when leakage current is more than 50mA.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims and their equivalents.

1: stage device 2: lifting device
3: roller 4: wire
5: various baton 10: main control unit
20: power supply section 30: detection section
40: relay control unit

Claims (5)

In the stage device is provided with a lifting device for winding a wire rope suspended on various stage facilities on the frame and a plurality of rollers for guiding a plurality of wire rope, the various baton is mounted on the bottom of the wire rope,
When the current value detected by the detector is abnormally increased by the main controller, it compares and analyzes it with the preset level, and if it exceeds the predetermined level, it operates within the set time and transmits and receives it by RS485 communication with the monitoring control panel. And a power control unit configured to correct a set value in the monitoring control panel when a malfunction occurs by setting, receiving a predetermined DC power applied from a power supply unit, converting a predetermined voltage and phase, and performing parallel conversion control again and applying it to the main control unit. A power control panel including a relay control unit configured to control an operation of a relay to control driving of the motor; The motor and the wire rope derailing the stage device comprising a monitoring control panel configured to perform the operation control and monitoring and protection of the motor at the same time without going to the panel room in which the power control panel is installed for the convenience of operation Load protection device. The method of claim 1,
The main controller may include a keyboard for outputting a corresponding key signal selected, a main controller for collectively controlling operations of each unit, an LCD display unit for displaying an information signal corresponding to an output signal controlled by the main controller, and the main controller. A first converter converting the controlled output signal into USART serial communication and applying it to a power control unit; a second converter converting the output signal controlled by the main controller into USART serial communication and applying it to the relay control unit; and in the main controller A third converter converting the controlled output signal into USART serial communication and applying the fourth converter to the fourth converter; and a fourth converter converting the signal output from the third converter to transmit and receive the supervisory control panel through RS 485 communication. Motor and load protection device when the wire rope derailment of the stage device, characterized in that configured to include. The method of claim 1,
The power control unit converts a three-phase AC power into a predetermined DC power supply to supply a voltage / phase converter, a voltage / phase converter for receiving a predetermined DC power applied from the power supply to convert a predetermined voltage and phase; And a fifth converter converting an output signal of the voltage / phase converter in parallel and transmitting the parallel output signal to the main control unit. The method of claim 1,
The detection unit includes a plurality of leakage current detectors for detecting a leakage current flowing in each drive motor, a plurality of current detectors for detecting a steady current flowing in each drive motor, and detecting phase and reverse phases when a current deviation and a reverse phase occur between phases. USART serial communication of the first to sixth current / phase converter and the signal output from the first to sixth current / phase converter to control the phase of the current detected by the plurality of leakage current detector and the current detector for Motor and load protection device during the wire rope derailment of the stage device, characterized in that it comprises a 6a to 6f converter applied to the main control unit by converting to. The method of claim 1,
The relay control unit includes a plurality of magnet switches for supplying or cutting off power applied to each driving motor, first to sixth relay controllers connected to the plurality of magnet switches to control an up, down or stop operation of each relay; And a 7a to 7f converter configured to convert signals output from the first to sixth relay controllers into USART serial communication to be applied to the main control unit to derail the wire rope of the stage apparatus. Protection device.
KR1020120097543A 2012-09-04 2012-09-04 Stage equipment, wire rope derailed when the motor and load protection device KR20140030857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120097543A KR20140030857A (en) 2012-09-04 2012-09-04 Stage equipment, wire rope derailed when the motor and load protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120097543A KR20140030857A (en) 2012-09-04 2012-09-04 Stage equipment, wire rope derailed when the motor and load protection device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101635574B1 (en) 2015-03-02 2016-07-05 주식회사 터보이엔지 A loose-proof batten and Stage equipment to use it
KR20160106814A (en) 2015-03-02 2016-09-13 주식회사 터보이엔지 Stage apparatus provided with a venue humidification and dust removal function
WO2016153164A1 (en) * 2015-03-26 2016-09-29 주식회사 한일티앤씨 System and method for sensing abnormality of stage facility and predicting failure using same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101635574B1 (en) 2015-03-02 2016-07-05 주식회사 터보이엔지 A loose-proof batten and Stage equipment to use it
KR20160106814A (en) 2015-03-02 2016-09-13 주식회사 터보이엔지 Stage apparatus provided with a venue humidification and dust removal function
WO2016153164A1 (en) * 2015-03-26 2016-09-29 주식회사 한일티앤씨 System and method for sensing abnormality of stage facility and predicting failure using same

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