CN207742523U - A kind of Motor Control circuit time-delay relay - Google Patents
A kind of Motor Control circuit time-delay relay Download PDFInfo
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- CN207742523U CN207742523U CN201721755143.9U CN201721755143U CN207742523U CN 207742523 U CN207742523 U CN 207742523U CN 201721755143 U CN201721755143 U CN 201721755143U CN 207742523 U CN207742523 U CN 207742523U
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- delay
- circuit
- time
- relay
- control loop
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- Motor And Converter Starters (AREA)
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Abstract
A kind of Motor Control circuit time-delay relay, equipped with rectification module, comparison circuit, relay coil and output contact, monostable circuit, the input of monostable circuit terminates auxiliary contact S1, and comparison circuit accesses relay coil after amplifying circuit, the contact of outputing of relay coil control is connected on motor control loop：Rectification module is general for friendship or DC supply input, alternating current-direct current control loop.
Description
Technical field
The utility model is related to a kind of relays, more particularly to one kind having Motor Control circuit delay protection relay
Device.
Background technology
Existing motor control loop mainly goes to judge whether motor arrives according to travel switch or other positions signal
Position, but since onsite application bad environments or other factors lead to position signal error in judgement, then motor operation can be caused different
Often, equipment is damaged, therefore needs to add auxiliary contact protection motor, improves safety, the reliability of application environment.But scene does not have
Other resources do not know how to remove control auxiliary contact, and auxiliary contact controls power supply to be come from for which, how to set the delay protection time,
Solution is not provided.
Utility model content
Purpose of utility model：In order to overcome the severe and resource shortage of onsite application environment, therefore provide a kind of tandem electricity
Motivation control loop time-delay relay, when " electricity is kept " occurs in motor control loop, start-up study function reaches delay adjustments
Time then releases " electricity is kept ".Motor Control circuit negative terminal need to only be disconnected, this block coupled in series is accessed, without
Will external power supply equipment again, the control of this module takes electricity entirely from control loop itself, and small, easy for installation.It solves
In actual environment, because control loop factor itself causes motor control abnormal, the problem of cannot but disconnecting control loop in time.
Technical solution：To achieve the above object, the technical solution adopted in the utility model is：Motor Control circuit is delayed
Relay, it is characterised in that：Equipped with rectification module, comparison circuit, relay coil and contact, monostable circuit are outputed, it is monostable
The input of state circuit terminates auxiliary contact S1, and comparison circuit accesses relay coil, relay coil control after amplifying circuit
Contact of outputing be connected on motor control loop.
Rectification module is general for friendship or DC supply input, alternating current-direct current control loop.
Motor control loop electric current be not less than 50mA, can starting relay delay function, and with delay time set,
The delay protection time needed for being set according to customer requirement.
Delay protection time setting range 1s~20s of monostable circuit setting.
Two grades of wire jumpers are set, and it is wire jumper at one that wherein monostable circuit output, which is equipped with the positions switch S1, for first grade of jump
Line；If switching short circuit, delay time 5S is second gear wire jumper, does not meet then delay time 10S；It is carried out according to customer requirement
Delay time is set, and conventional delay time has two grades of 5s, 10s；The operating current 50mA or more of the input terminal of monostable circuit.
The application of the time-delay relay, delay protection time setting range 1s~20s.Motor Control need to only be returned
Road negative terminal disconnects, this product is connected and is accessed；The time-delay relay is concatenated into motor control loop, when electric motor loop works
When, control loop electric current be not less than 50mA, start-up study protect circuit, trigger, if in delay time setting range, electricity
Machine control loop automatically terminates self-locking, then control loop electric current is 0, and relay keeps normally off, delay time to reset；If prolonging
When the time arrive, motor control loop does not automatically terminate self-locking, then relay normally closed contact disconnect, self-locking circuit will be released, control
Loop current processed is 0, and relay tip is closed again；The contact of outputing of relay coil control is connected on motor and controls back
Road.
Delay protection device of the utility model as motor operation circuit, when motor control loop occurs " electricity is kept "
When, start-up study function reaches the delay adjustments time, then releases " electricity is kept ".It is mainly used in when electric motor loop is because of itself original
Because or auxiliary contact it is not in place for a long time, control loop be constantly in it is long-term " electricity keep " situation can cause motor operation abnormal,
As long as reaching the product delay adjustments time at this time, electric motor loop can still be cut off, to ensure circuit safety.It includes shell
Body, power inleting terminal, comparison circuit, monostable circuit, rectifier bridge, relay output circuit, coil.When motor is because of itself original
Because causing motor operation abnormal, which can then provide auxiliary contact, delay protection motor control loop.This time-delay relay is suitable
For it is in need to Motor Control circuit carry out auxiliary protection occasion.
Advantageous effect：Therefore the utility model product can provide auxiliary protection for motor control loop, solve motor control
There is problem when " electricity is kept " failure in circuit, improves system reliability, and body is smaller, and guide rail installation facilitates transformation and use.
Description of the drawings
Schematic diagram inside the time-delay relay of Fig. 1 Motor Controls circuit；
Fig. 2 Motor Controls circuit time-delay relay wiring diagram.
Specific implementation mode
The utility model is further described below in conjunction with the accompanying drawings.
Fig. 1 Motor Controls circuit time-delay relay internal circuit schematic diagram, Fig. 1 are the delays of the utility model control loop
Relay circuit, is equipped with rectifier module D 1, comparison circuit in circuit, monostable circuit, resistance capacitance, relay coil REL1 and
Contact is outputed, when input power exchange or direct current, time-delay relay is accessed in control loop, as long as ensureing control loop
Electric current is not less than 50mA, can be set according to on-site actual situations with start-up study defencive function, specific delay time.U1 is
Both monostables, for being delayed；Powered on moment, Q2 triode ONs, then U1 thirds pin is high level, until monostable circuit
Delay time arrives, then U1 thirds pin exports low level, then Q1 triode ONs, and relay coil has 5V electricity, relay tip
It disconnects, control loop power-off, to play the role of delay protection；D2 is 5.1V voltage-stabiliser tubes, and D3 is 2.4V voltage-stabiliser tubes, and D4 is
1N4007 is used for protective relay coil.
The utility model in actual use, the time-delay relay is concatenated into motor control loop, works as electric motor loop
When work, control loop electric current is not less than 50mA, and start-up study protects circuit, trigger, if in delay time setting range
Interior, motor control loop automatically terminates self-locking, then control loop electric current is 0, and relay keeps normally off, delay time clear
Zero；If delay time arrives, motor control loop does not automatically terminate self-locking, then relay normally closed contact disconnects, and will release self-locking
Circuit, control loop electric current are 0, and relay tip is closed again.The contact of outputing of relay coil control is connected on motor
Control loop.S1 switches in time-delay relay DTM setting delay times 10s, Fig. 1 are disconnected, U1 is both monostables output
Signal, and being linked into according to attached drawing 2 can be with (A1, A2 are corresponded to respectively in Fig. 2 in motor control loop general alternating current-direct current 220V
In out power inputs in Fig. 1, U1 are both monostables, and Q1, Q2 are triode, are operated in saturation state, delay circuit
For C5, it is barricaded as delay circuit to capacitance jointly with R5, while giving control loop AC 220V power supplys, carries out closing operation, then people
It is abnormal to allow the stroke position of the switch to judge, allow control loop to control motor rotation always, it can be seen that it is arrived to the delay 10s times,
Motor then stops operating, and protection is effective.
Embodiment 1：
By time-delay relay setting delay time 10s, (S1 switches disconnect, and delay time is codetermined by R5, C5, is powered on
When, monostable circuit is triggered, start-up study, and until delay time arrives, then the 3rd pins of U1 switch to low level by high level, lead
Q1 conductings, relay coil is caused to obtain electric, relay tip disconnection.), and being linked into according to attached drawing 2 can be general with alternating current-direct current 220V
Motor control loop in, while giving control loop AC 220V power supplys, carry out closing operation, then artificially allow travel switch position
It is abnormal to set judgement, control loop is allowed to control motor rotation always, it can be seen that it is arrived to the delay 10s times, motor then stops operating,
Protection is effective.
Embodiment 2：
Time-delay relay is set into delay time 10s, and being linked into according to attached drawing 2 can be with motor general alternating current-direct current 220V
In control loop, while control loop DC 220V power supplys are given, carry out closing operation, the stroke position of the switch is then artificially allowed to judge
It is abnormal, allow control loop to control motor rotation always, it can be seen that be arrived to the delay 10s times, motor then stops operating, and protection has
Effect.Travel switch is motor control loop self-position signal contact, and simulation makes travel switch not in place, sees that time-delay relay is
It is no to play a protective role.
Embodiment 3：
Time-delay relay is set into delay time 10s, and being linked into according to attached drawing 2 can be with motor general alternating current-direct current 220V
In control loop, while control loop DC 220V power supplys are given, carry out closing operation, motor normal operation ensures that motor stops turning
The dynamic time is less than setting delay 10s, then delay time is reset, subsequent operation reclocking.K is control relay circuit, and DTM is
Time-delay relay module.
The above is only the embodiment of the utility model, it should be pointed out that：For the ordinary skill people of the art
For member, without departing from the principle of this utility model, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the scope of protection of the utility model.
Claims (4)
1. a kind of Motor Control circuit time-delay relay, it is characterised in that：Equipped with rectification module, comparison circuit, relay line
Contact, monostable circuit are enclosed and output, the input of monostable circuit terminates auxiliary contact S1, and comparison circuit is followed by through amplifying circuit
Enter relay coil, the contact of outputing of relay coil control is connected on motor control loop.
2. time-delay relay according to claim 1, it is characterised in that：Rectification module is for friendship or DC supply input.
3. time-delay relay according to claim 1, it is characterised in that：The delay protection time of monostable circuit setting sets
Determine range 1s~20s.
4. time-delay relay according to claim 1, it is characterised in that：Two grades of wire jumpers are set, and wherein monostable circuit is defeated
It is wire jumper at one to go out to be equipped with the positions switch S1, is first grade of wire jumper；If switching short circuit, delay time 5S is second gear
Wire jumper does not meet then delay time 10S；Delay time setting is carried out according to customer requirement, conventional delay time has two grades of 5s, 10s;
The operating current 50mA or more of the input terminal of monostable circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721755143.9U CN207742523U (en) | 2017-12-15 | 2017-12-15 | A kind of Motor Control circuit time-delay relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721755143.9U CN207742523U (en) | 2017-12-15 | 2017-12-15 | A kind of Motor Control circuit time-delay relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207742523U true CN207742523U (en) | 2018-08-17 |
Family
ID=63118298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721755143.9U Active CN207742523U (en) | 2017-12-15 | 2017-12-15 | A kind of Motor Control circuit time-delay relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207742523U (en) |
-
2017
- 2017-12-15 CN CN201721755143.9U patent/CN207742523U/en active Active
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