CN109698660A - A kind of three-phase door roller circuit - Google Patents
A kind of three-phase door roller circuit Download PDFInfo
- Publication number
- CN109698660A CN109698660A CN201711003453.XA CN201711003453A CN109698660A CN 109698660 A CN109698660 A CN 109698660A CN 201711003453 A CN201711003453 A CN 201711003453A CN 109698660 A CN109698660 A CN 109698660A
- Authority
- CN
- China
- Prior art keywords
- contact
- relay
- phase
- open
- uplink
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/68—Operating devices or mechanisms, e.g. with electric drive
-
- 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
- H02H7/09—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 against over-voltage; against reduction of voltage; against phase interruption
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/68—Operating devices or mechanisms, e.g. with electric drive
- E06B2009/6809—Control
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Power Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
The present invention relates to a kind of three-phase door roller circuits that open-phase protection is carried out using relay, including major loop and control circuit；The major loop includes uplink relay, downlink relay, three-phase alternating current door roller motor and three phase mains；The major loop is additionally provided with the first open-phase protection relay and the second open-phase protection relay；The control circuit includes upload control circuit and downlink control loop.The present invention carries out effective open-phase protection, the operation is stable to door roller motor using relay.
Description
Technical field
The present invention relates to rolling screen door technical field more particularly to a kind of three-phase door roller circuits.
Background technique
Electric rolling door is widely applied in places such as StoreFront, garages, and electric rolling door lifting is driven by door roller,
Door roller is generally made of components such as motor, reduction gearbox, brake gear, controller, limiter, operation buttons.Existing roller shutter
Door a part is driven by three-phase alternating current door roller, generally carries out switching on and shutting down using air switch or contactor, in use,
Certain one-phase open circuit in three-phase line is usually caused due to power supply line's poor contact etc., causes three-phase alternating current machine burning
It ruins, in the prior art, open-phase protection is carried out to three-phase motor frequently with open phase protector is installed in power supply line, but phase shortage is protected
Shield device mostly uses greatly the electronic original parts such as capacitance-resistance, since the electronic components such as capacitance-resistance after working after a period of time, part characteristic meeting
It changes, is especially influenced vulnerable to extraneous such as thunder and lightning, humidity factor, lead to job insecurity, and once break down not
It is easy-maintaining.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, providing a kind of has three-phase door roller motor using relay
Imitate the circuit of open-phase protection, the operation is stable.
The present invention is achieved by the following technical solutions:
A kind of three-phase door roller circuit, including major loop and control circuit；The major loop include uplink relay, downlink after
Electric appliance, three-phase alternating current door roller motor and three phase mains；The uplink relay, downlink relay convert touching there are four being all provided with
Point；The movable contact of the uplink relay wherein three transfer contacts is separately connected the L1 phase, L2 phase and L3 phase of three phase mains；
The normally opened contact of first transfer contact of the uplink relay, the normally-closed contact of the second transfer contact, the second transfer contact
Normally opened contact, the normally opened contact of third transfer contact, third transfer contact normally-closed contact be separately connected the of downlink relay
The normally opened contact of one transfer contact, the normally opened contact of the second transfer contact, the normally-closed contact of third transfer contact, the second conversion
The normally-closed contact of contact, third transfer contact normally opened contact；The movable contact of first transfer contact of the downlink relay,
Normally opened contact is separately connected the L1 phase of power supply and the head end of machine winding A phase；
The major loop is additionally provided with the first open-phase protection relay and the second open-phase protection relay；First open-phase protection
Relay and the second open-phase protection relay are all provided with there are three normally opened contact；First open-phase protection relay, first contact,
One end of second contact is separately connected the movable contact of the second transfer contact of downlink relay, third transfer contact, the other end point
One end of second the first contact of open-phase protection relay, the second contact is not connected；Second open-phase protection relay first touches
Point, the second contact the other end be separately connected the head end of machine winding B phase, C phase；The first open-phase protection relay coil
One end connect this relay the first contact input terminal, the other end connect zero curve；The second open-phase protection relay line
One end of circle connects the input terminal of the second contact of this relay, and the other end connects zero curve；
The control circuit includes upload control circuit and downlink control loop；
The upload control circuit include the power supply L1 phase being sequentially connected in series, the normally-closed contact of the first transfer contact of downlink relay,
Uplink relay coil, normally opened uplink button, normally closed stop button and zero curve；The end of the uplink relay coil, uplink
The normally opened contact of the 4th transfer contact of relay, the third contact of the first open-phase protection relay, the second open-phase protection relay
Third contact, normally closed stop button and zero curve be sequentially connected in series uplink button parallel connection latching circuit；
The downlink control loop include the power supply L1 phase being sequentially connected in series, the normally-closed contact of the first transfer contact of uplink relay,
Downlink relay coil, normally opened descending button, normally closed stop button and zero curve；The end of the downlink relay coil, downlink
The normally opened contact of the 4th transfer contact of relay, the third contact of the first open-phase protection relay, the second open-phase protection relay
Third contact, normally closed stop button and zero curve be sequentially connected in series descending button parallel connection latching circuit.
The working principle of the invention is, when opening rolling screen door, presses uplink button, upload control circuit is connected, uplink
Relay energized action, the normally-closed contact of uplink relay disconnects, normally opened contact is closed；The normally opened contact of uplink relay closes
After conjunction, the first open-phase protection relay energized action, normally opened contact closure, the second open-phase protection relay energized action,
Normally opened contact closure, major loop are connected, and A phase, the B phase of motor are respectively turned on the L1 phase, L3 phase and L2 phase of power supply with C phase, electricity
Machine, which rotates forward, drives rolling screen door uplink；Uplink button parallel connection latching circuit is also connected at this time, and unclamping uplink button will not influence motor
Operation；When shutting down, normally closed stop button is pressed, uplink button parallel connection latching circuit disconnects, and uplink relay electric-loss disconnects,
Major loop disconnects, and also power loss disconnects for the first open-phase protection relay and the second open-phase protection relay, and motor power loss stops operating.
Similarly, when closing rolling screen door, descending button is pressed, downlink control loop is connected, downlink relay energized action, downlink relay
The normally-closed contact of device disconnects, normally opened contact is closed；After the normally opened contact closure of downlink relay, the first open-phase protection relay is obtained
Electronic work, normally opened contact closure, the second open-phase protection relay energized action, normally opened contact closure, major loop are connected, electricity
A phase, the B phase of machine are respectively turned on the L1 phase, L2 phase and L3 phase of power supply with C phase, and motor reversal drives rolling screen door downlink；This is at present
Row button parallel connection latching circuit is also connected, and unclamping descending button will not influence motor operation；When shutting down, press it is normally closed stop by
Button, descending button parallel connection latching circuit disconnect, and downlink relay electric-loss disconnects, and major loop disconnects, the first open-phase protection relay
It is disconnected with the second open-phase protection relay also power loss, motor power loss stops operating.
In the technical program, uplink relay rotates forward opening rolling screen door for controlling motor, and downlink relay is for controlling
Motor reversal closes rolling screen door；The normally-closed contact and upload control circuit in series of first transfer contact of downlink relay, uplink
The normally-closed contact and downlink control loop of first transfer contact of relay are connected, for controlling upload control circuit and downlink
Circuit interlocking, prevents from malfunctioning, while carrying out open-phase protection to motor A phase, as long as A phase phase shortage or poor contact, uplink relay
Device and downlink relay will not act.The parallel connection that 4th transfer contact of uplink relay is used for uplink button is self-locking, under
The parallel connection that 4th transfer contact of row relay is used for descending button is self-locking.First open-phase protection relay and the second phase shortage are protected
Shield relay is respectively used to protect motor B phase, C phase phase shortage, when motor B phase phase shortage or poor contact, the first phase shortage
Protective relay coil losing electricity, the first open-phase protection relay disconnect cutting major loop, meanwhile, the first open-phase protection relay
Third contact disconnects, and cuts off the uplink button parallel connection latching circuit or descending button parallel connection latching circuit of closure, the uplink of closure
Relay or downlink relay disconnect, and further cut off major loop；When motor C phase phase shortage or poor contact, the second phase shortage is protected
Relay coil power loss is protected, the second open-phase protection relay disconnects cutting major loop, meanwhile, the of the second open-phase protection relay
Three contacts disconnect, and cut off the uplink button parallel connection latching circuit or descending button parallel connection latching circuit of closure, the uplink of closure after
Electric appliance or downlink relay disconnect, and further cut off major loop.
Further, normally closed uplink limitation travel switch is equipped between the uplink relay coil and uplink button, on this
Row limitation travel switch is series in uplink button parallel connection latching circuit.Setting uplink limitation travel switch is for making rolling screen door
It is automatically stopped when row in scheduled position, when the movement of uplink limitation travel switch, normally-closed contact is disconnected, and cutting uplink button is simultaneously
Join latching circuit, uplink relay disconnects cutting major loop, motor stalls.
Further, normally closed downlink limitation travel switch is equipped between the downlink relay coil and descending button, under this
Row limitation travel switch is series in descending button parallel connection latching circuit.Setting downlink limitation travel switch is for making under rolling screen door
It is automatically stopped when row in scheduled position, when the movement of downlink limitation travel switch, normally-closed contact is disconnected, and cutting descending button is simultaneously
Join latching circuit, downlink relay disconnects cutting major loop, motor stalls.
The technical program is relatively specific for the little door roller of power, can if to be suitable for the biggish door roller of power
Relay in the technical program is changed into contactor.
The beneficial effects of the present invention are: using uplink relay and downlink relay in major loop, electricity not only can control
The positive and negative rotation of machine, moreover it is possible to phase shortage be carried out to motor A and poor contact is protected；It is arranged first after the downlink relay of major loop
Open-phase protection relay and the second open-phase protection relay, can phase shortage effectively to motor B phase and C phase and poor contact carry out
Protection, protection element do not have electronic component, the operation is stable.
Detailed description of the invention
Fig. 1 is circuit diagram of the invention.
Specific embodiment
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing, so that advantages and features of the invention
It can be easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
As shown in Figure 1, the embodiment of the present invention, including major loop and control circuit；The major loop includes uplink relay
Device K1, downlink relay K2, three-phase alternating current door roller motor M and three phase mains L1, L2, L3；The uplink relay K1, under
Row relay K2 is all provided with there are four transfer contact；The uplink relay wherein three transfer contacts K1-1, K1-2, K1-3
Movable contact is separately connected the L1 phase, L2 phase and L3 phase of three phase mains；The first transfer contact K1-1's of the uplink relay K1
Normally opened contact, the normally-closed contact of the second transfer contact K1-2, the normally opened contact of the second transfer contact K1-2, third transfer contact
The normally opened contact of K1-3, the normally-closed contact of third transfer contact K1-3 are separately connected the first transfer contact of downlink relay K2
The normally opened contact of K2-1, the normally opened contact of the second transfer contact K2-2, the normally-closed contact of third transfer contact K2-3, the second conversion
The normally opened contact of the normally-closed contact of contact K2-2, third transfer contact K2-3；The first transfer contact of K2 of the downlink relay
Movable contact, the normally opened contact of K2-1 is separately connected the L1 phase of power supply and the head end of motor M winding A phase；
The major loop is additionally provided with the first open-phase protection relay K3 and the second open-phase protection relay K4；First phase shortage
Protective relay K3 and the second open-phase protection relay K4 is all provided with there are three normally opened contact；First open-phase protection relay
The first contact K3-1 of K3, one end of the second contact K3-2 are separately connected the second transfer contact K2-2 of downlink relay K2,
The movable contact of three transfer contact K2-3, the other end are separately connected the second the first contact open-phase protection relay K4 K4-1, the second touching
One end of point K4-2；The first contact K4-1 of the second open-phase protection relay K4, the other end of the second contact K4-2 are distinguished
Connect the head end of motor M winding B phase, C phase；One end of the first open-phase protection relay K3 coil connects this relay K3's
The input terminal of first contact K3-1, the other end connect zero curve N；One end of the second open-phase protection relay K4 coil connects this
The input terminal of the second contact relay K4 K4-2, the other end connect zero curve N；
The control circuit includes upload control circuit and downlink control loop；
The upload control circuit include the power supply L1 phase being sequentially connected in series, downlink relay the first transfer contact of K2 K2-1 it is normal
Closed contact, uplink relay K1 coil, normally opened uplink button SB1, normally closed stop button SB3 and zero curve N；The uplink relay
The end of device K1 coil, the normally opened contact of the 4th transfer contact K1-4 of uplink relay K1, the first open-phase protection relay K3
Third contact K3-3, the third contact K4-3 of the second open-phase protection relay K4, normally closed stop button SB3 and zero curve N successively go here and there
Connection composition uplink button parallel connection latching circuit；
The downlink control loop include the power supply L1 phase being sequentially connected in series, uplink relay the first transfer contact of K1 K1-1 it is normal
Closed contact, downlink relay K2 coil, normally opened descending button SB2, normally closed stop button SB3 and zero curve N；The downlink relay
The end of device K2 coil, the normally opened contact of the 4th transfer contact K2-4 of downlink relay K2, the first open-phase protection relay K3
Third contact K3-3, the third contact K4-3 of the second open-phase protection relay K4, normally closed stop button SB3 and zero curve N successively go here and there
Connection composition descending button parallel connection latching circuit.
The working principle of the present embodiment is, when opening rolling screen door, presses uplink button SB1, and upload control circuit is connected,
Uplink relay K1 energized action, the normally-closed contact of uplink relay K1 disconnects, normally opened contact is closed；Uplink relay K1's is normal
After opening contact closure, the first open-phase protection relay K3 energized action, normally opened contact closure, the second open-phase protection relay K4
Energized action, normally opened contact closure, major loop are connected, and A phase, the B phase of motor M are respectively turned on L1 phase, the L3 of power supply with C phase
Mutually and L2 phase, motor M rotate forward drive rolling screen door uplink；Uplink button parallel connection latching circuit is also connected at this time, unclamps uplink button
SB1 will not influence motor operation；When shutting down, normally closed stop button SB3 is pressed, uplink button parallel connection latching circuit disconnects, on
Row relay K1 power loss disconnects, and major loop disconnects, and the first open-phase protection relay K3 and the second open-phase protection relay K4 also lose
Electrically disconnected, motor M power loss stops operating.Similarly, when closing rolling screen door, descending button SB2 is pressed, downlink control loop connects
Logical, downlink relay K2 energized action, the normally-closed contact of downlink relay K2 disconnects, normally opened contact is closed；Downlink relay K2
Normally opened contact closure after, the first open-phase protection relay K3 energized action, normally opened contact closure, the second open-phase protection relay
Device K4 energized action, normally opened contact closure, major loop are connected, and A phase, the B phase of motor M are respectively turned on the L1 of power supply with C phase
Phase, L2 phase and L3 phase, motor M reversion drive rolling screen door downlink；The latching circuit of descending button parallel connection at this time is also connected, and downlink is unclamped
Button SB2 will not influence motor M operation；When shutting down, normally closed stop button SB3 is pressed, descending button parallel connection latching circuit is disconnected
It opens, downlink relay K2 power loss disconnects, and major loop disconnects, the first open-phase protection relay K3 and the second open-phase protection relay K4
Also power loss disconnects, and motor M power loss stops operating.
In the present embodiment, uplink relay K1 rotates forward opening rolling screen door for controlling motor M, and downlink relay K2 is for controlling
Rolling screen door is closed in motor M reversion processed；The normally-closed contact of the first transfer contact K2-1 of downlink relay K2 and upload control circuit
Series connection, normally-closed contact and downlink the control loop series connection of the first transfer contact K1-1 of uplink relay K1, for making uplink control
Circuit processed and the interlocking of downlink control loop, prevent from malfunctioning, while carrying out open-phase protection to motor A phase, as long as A phase phase shortage or connecing
Touch bad, uplink relay K1 and downlink relay K2 will not be acted.The 4th transfer contact K1-4 of uplink relay K1 is used
It is self-locking in the parallel connection to uplink button SB1, the 4th transfer contact K2-4 of downlink relay K2 be used for descending button SB2's and
Join self-locking.First open-phase protection relay K3 and the second open-phase protection relay K4 be respectively used to motor B phase, C phase phase shortage into
Row protection, when motor B phase phase shortage or poor contact, the first open-phase protection relay K3 coil losing electricity, the first open-phase protection after
Electric appliance K3 disconnects cutting major loop, meanwhile, the third contact K3-3 of the first open-phase protection relay K3 is disconnected, and cuts off the upper of closure
Row button parallel connection latching circuit or descending button parallel connection latching circuit, the uplink relay K1 or downlink relay K2 of closure are disconnected
It opens, further cuts off major loop；When motor C phase phase shortage or poor contact, the second open-phase protection relay K4 coil losing electricity, the
Two open-phase protection relay K4 disconnect cutting major loop, meanwhile, the third contact K4-3 of the second open-phase protection relay K4 is disconnected,
Cut off the uplink button parallel connection latching circuit or descending button parallel connection latching circuit of closure, the uplink relay K1 or downlink of closure
Relay K2 is disconnected, and further cuts off major loop.
In the present embodiment, normally closed uplink stroke-limit is equipped between the uplink relay K1 coil and uplink button SB1
Switch SQ1, uplink limitation travel switch SQ1 are series in uplink button parallel connection latching circuit.Setting uplink stroke-limit is opened
SQ1 is closed to be used to make to be automatically stopped when rolling screen door uplink in scheduled position, it is normally closed when uplink limitation travel switch SQ1 movement
Contact disconnects, and cuts off uplink button parallel connection latching circuit, and uplink relay K1 disconnects cutting major loop, and motor M stops operating.
In the present embodiment, normally closed downlink stroke-limit is equipped between the downlink relay K2 coil and descending button SB2
Switch SQ2, downlink limitation travel switch SQ2 are series in descending button parallel connection latching circuit.Setting downlink stroke-limit is opened
SQ2 is closed to be used to make to be automatically stopped when rolling screen door downlink in scheduled position, it is normally closed when downlink limitation travel switch SQ2 movement
Contact disconnects, and cuts off descending button parallel connection latching circuit, and downlink relay disconnects cutting major loop, and motor M stops operating.
Claims (1)
1. a kind of three-phase door roller circuit, including major loop and control circuit；The major loop includes uplink relay, downlink
Relay, three-phase alternating current door roller motor and three phase mains；It is characterized by: the uplink relay, downlink relay are all provided with
There are four transfer contacts；The movable contact of the uplink relay wherein three transfer contacts be separately connected three phase mains L1 phase,
L2 phase and L3 phase；The normally opened contact of first transfer contact of the uplink relay, the normally-closed contact of the second transfer contact,
The normally opened contact of two transfer contacts, the normally opened contact of third transfer contact, third transfer contact normally-closed contact be separately connected down
The normally opened contact of the first transfer contact of row relay, the normally opened contact of the second transfer contact, third transfer contact normally closed touching
Point, the normally-closed contact of the second transfer contact, third transfer contact normally opened contact；First conversion touching of the downlink relay
Movable contact, the normally opened contact of point are separately connected the L1 phase of power supply and the head end of machine winding A phase；The major loop is additionally provided with first
Open-phase protection relay and the second open-phase protection relay；First open-phase protection relay and the second open-phase protection relay
Device is all provided with there are three normally opened contact；First open-phase protection relay, first contact, the second contact one end be separately connected down
The movable contact of the second transfer contact, the third transfer contact of row relay, the other end are separately connected the second open-phase protection relay
First contact, the second contact one end；The other end difference of second open-phase protection relay, first contact, the second contact
Connect the head end of machine winding B phase, C phase；One end of the first open-phase protection relay coil connects the first of this relay
The input terminal of contact, the other end connect zero curve；One end of the second open-phase protection relay coil connects this relay second
The input terminal of contact, the other end connect zero curve；The control circuit includes upload control circuit and downlink control loop；On described
Row control loop includes the power supply L1 phase being sequentially connected in series, normally-closed contact, the uplink relay of the first transfer contact of downlink relay
Coil, normally opened uplink button, normally closed stop button and zero curve；The end of the uplink relay coil, uplink relay the 4th
The third touching of the normally opened contact of transfer contact, the third contact of the first open-phase protection relay, the second open-phase protection relay
Point, normally closed stop button and zero curve are sequentially connected in series uplink button parallel connection latching circuit；The downlink control loop include according to
Secondary concatenated power supply L1 phase, the normally-closed contact of the first transfer contact of uplink relay, downlink relay coil, normally opened downlink are pressed
Button, normally closed stop button and zero curve；The end of the downlink relay coil, the 4th transfer contact of downlink relay it is normally opened
Contact, the third contact of the first open-phase protection relay, the third contact of the second open-phase protection relay, normally closed stop button
It is sequentially connected in series descending button parallel connection latching circuit with zero curve, is equipped between the uplink relay coil and uplink button normal
Close row limitation travel switch, which is series in uplink button parallel connection latching circuit, the downlink after
Normally closed downlink limitation travel switch is equipped between electric apparatus coil and descending button, which is series at downlink
In button parallel connection latching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003453.XA CN109698660A (en) | 2017-10-24 | 2017-10-24 | A kind of three-phase door roller circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003453.XA CN109698660A (en) | 2017-10-24 | 2017-10-24 | A kind of three-phase door roller circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109698660A true CN109698660A (en) | 2019-04-30 |
Family
ID=66228017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711003453.XA Pending CN109698660A (en) | 2017-10-24 | 2017-10-24 | A kind of three-phase door roller circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109698660A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147578A1 (en) * | 2020-01-21 | 2021-07-29 | 福建安麟智能科技股份有限公司 | Sliding control mode circuit of motor with gravity compensation for fire and smoke curtain |
-
2017
- 2017-10-24 CN CN201711003453.XA patent/CN109698660A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147578A1 (en) * | 2020-01-21 | 2021-07-29 | 福建安麟智能科技股份有限公司 | Sliding control mode circuit of motor with gravity compensation for fire and smoke curtain |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190430 |