CN205428830U - A starting circuit for safety relay - Google Patents
A starting circuit for safety relay Download PDFInfo
- Publication number
- CN205428830U CN205428830U CN201521125624.2U CN201521125624U CN205428830U CN 205428830 U CN205428830 U CN 205428830U CN 201521125624 U CN201521125624 U CN 201521125624U CN 205428830 U CN205428830 U CN 205428830U
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- circuit
- diode
- resistance
- relay
- switch module
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Abstract
The utility model provides a starting circuit includes: of a starting circuit for safety relay, safety relay a power supply. Reset button has the signal output part of pressing, the triode switches on the circuit, has the signal input part of switching on and discharging electric -quantity end, the entry control circuit is failed to the opto -coupler, has the signal input part of pressing and switch on the signal to send the end, it is connected to and presses signal output part to press signal input part, switch on the signal send the end be coupled in switching on signal input part for the control triode switches on the on -state of circuit, capacitor charging and discharging circuit has the electric quantity and fills and put the end, the discharging electric -quantity end is coupled to fill in the electric quantity puts the end for through changing self charge -discharge state discharge control triode circuit conduction state. Relay trigger circuit has the triggering signal input, the triggering signal input is coupled in capacitor charging and discharging circuit for the adjustment triggers the state according to capacitor charging and discharging circuit charge -discharge state. The utility model is used for solve among the prior art reset button easy because of erroneous operation by the technical problem of bypass.
Description
Technical field
This utility model relates to a kind of for Safety actuality start-up circuit, particularly relates to a kind of start-up circuit for safety relay.
Background technology
The electric control operation mode of the most domestic various big-and-middle-sized engineering mechanical device is quick in the field of business universal, the electronic control component prescription used improves, the unified levels of precision that each mechanical action is controlled need to be reached, simultaneously, improve the electronic component security control to plant equipment, also become the research and development of electronic devices and components kind and extension key technology.
Existing safety relay is mainly used in button control loop, the safety sensing element of safety relay circuit of the prior art is mostly installed on the motion controller of the components/devices such as scram button, safety door, both hands button, safe light curtain and various plant equipment, generally it is manually pressed by being connected setting as trigger event, safety relay and triggering circuit thereof with above-mentioned various safety sensing elements by the personnel that are just of corresponding device.When after the signal of the kinds such as the halt command that the signal that safety sensing element testing risk of disturbance signal occurs to self connection equipment, the operation error of operator produces and the operator of mentioned kind send; safety relay receives these signals; and the abnormal signal of these equipment is processed; and immediately this type of information is passed to the motion controller being connected with above-mentioned safety relay; control the power source of motion controller cutting machine equipment; equipment is made to enter safe condition, protection personnel and equipment safety.
Some specific equipment are when running into the sudden problems such as fault, exception and human users's error; needing to press scram button makes equipment enter safe condition; the scram button of most equipment must arrange in pairs or groups manual reset button use; equipment is made to restart operating after recovering in unit exception; under i.e. scram button is in release conditions; several days states of relevant device terminate; now operator press manual reset button; the output of safety relay starts, and powers to the power of plant equipment.But in practical operation production process, producers because it is contemplated that production efficiency and put safety in ignoring, use means in violation of rules and regulations to make manual reset button be constantly in ON state, thus bypassed hand-reset function, made production be constantly in a kind of unsafe state.
To sum up, in traditional relay reset circuit, using the push of SR as the trigger action of circuit reset, when carrying out the faulty operations such as bypass reset button staff, the function making SR is left in the basket, and does not has the guarantee workman after fault recovery and equipment safety effect.Traditional reset circuit exists that safety is the highest, easily carry out the faulty operation of the other position of SR, the safety in operation reducing equipment and the problem of operated by personnel's safety.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide the start-up circuit for safety relay, for solving the problem that in prior art, SR is easily bypassed because of manual errors operation.
For achieving the above object and other relevant purposes, this utility model provides a kind of start-up circuit for safety relay and method, at least includes: power supply；SR, has and presses signal output part；Triode ON circuit, has Continuity signal input and charge capacity end；Optocoupler input control circuit, has and presses signal input part and Continuity signal issuing side；Press signal input part to be connected to press signal output part；Continuity signal issuing side is coupled to Continuity signal input, for controlling the conducting state of triode ON circuit；Capacitor charge and discharge circuit, has electricity charge and discharge end；Charge capacity end is coupled to electricity charge and discharge end, for by changing self charging and discharging state control of discharge transistor circuit conducting state.Relay triggers circuit, has triggering signal input part；Trigger signal input part and be coupled to capacitor charge and discharge circuit, for adjusting triggering state according to capacitor charge and discharge circuit charging and discharging state.
In one embodiment of the present invention, optocoupler input control circuit includes: the first resistance, the second resistance and the first optocoupler assembly；First resistance is connected between power supply and the second resistance；Second resistance is connected to the first optocoupler assembly；Optocoupler assembly is connected between power supply and ground wire；First optocoupler assembly is for controlling the conducting state of audion.
In one embodiment of the present invention, relay triggers circuit and includes: the first switch module, second switch assembly, the 3rd switch module, SR, the first diode, the second diode, the 3rd diode and the 4th diode.
In one embodiment of the present invention, the first switch module is connected with the negative pole of the second diode and the negative pole of the 4th diode simultaneously, for closing when pressing SR；The negative pole of the first switch module and the first diode connects, and is connected to the positive pole of the 4th diode；Second switch assembly is connected to power supply；3rd switch module is connected to power supply and the positive pole of the first diode；SR is connected to power supply and the first resistance；It is connected to second switch circuit and the positive pole of the second diode and the positive pole of the 3rd diode.
In one embodiment of the present invention, the first diode, the second diode, the 3rd diode and the 4th diode are for preventing reverse conduction diodes；First switch module is relay coil；After first switch module triggers, the relevant contacts action of relay.Second switch assembly is closed, for the self-locking of the first switch module.3rd switch module is a normally-closed contact, main with being the fault detection feedback of other circuit outside safety relay, when other electric circuit inspection are to after faulty, and this normally-closed contact can become opening a way.Make capacitor charge and discharge loop, it is impossible to charging so that start-up circuit lost efficacy.
In one embodiment of the present invention, described first switch module is under self triggering state so that the relevant contacts action of relay；Described 3rd switch module is a normally-closed contact, feeds back for fault.In one embodiment of the present invention, the first diode connects the colelctor electrode of the first switch module and audion, for the charging of charging and discharging circuit.
In one embodiment of the present invention, triode ON circuit includes: audion, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first stabilivolt, the second stabilivolt, the first electric capacity, the second electric capacity, the second optocoupler assembly and the 3rd optocoupler assembly；Audion includes base stage, collector and emitter；First electric capacity includes positive plate and negative plate；Second electric capacity includes positive plate and negative plate；
In one embodiment of the present invention, the colelctor electrode of audion and relay trigger circuit and couple, and emitter stage is connected to ground wire, and base stage connects the 3rd resistance, and connects the 4th resistance and the positive pole of the first stabilivolt；The positive plate of the first electric capacity couples relay and triggers circuit and capacitor charge and discharge circuit, and is connected to the 3rd optocoupler assembly, and the negative plate of the first electric capacity connects the 5th resistance and the 3rd optocoupler assembly；The positive plate of the second electric capacity connects the negative pole of the second stabilivolt, the 6th resistance and the second optocoupler assembly, and the negative plate of the second electric capacity connects the second optocoupler assembly and the 6th resistance.
In an embodiment of the present utility model, SR and relay trigger circuit and couple, and for triggering signal to the transmission of safety relay start-up circuit, the first switch module is relay coil.
In an embodiment of the present utility model, the first diode connects the colelctor electrode of the first switch module and audion.
As it has been described above, a kind of start-up circuit for safety relay that this utility model provides, have the advantages that
This manual reset circuit is mainly for solving the problems referred to above, have employed the processing method of a kind of Dynamic Signal: the contactor assembly pressing manual reset button, now SR corresponding is in closure state state, and the output of safety relay can not start, only when discharge manual reset button time, SR just can be in OFF state, the output of safety relay could start.Thus avoid producers and bypass the possibility of hand-reset function, it is ensured that the safety of production.This utility model meets the GB/T16855 description about hand-reset function, and meets Cat.4 safe class, and in a fault and the accumulation of fault, hand-reset function will not be bypassed.
Accompanying drawing explanation
Fig. 1 is shown as a kind of start-up circuit connection diagram for safety relay of the present utility model.
Element numbers explanation
1 optocoupler input control circuit
2 relays trigger circuit
3 triode ON circuit
4 capacitor charge and discharge circuits
R1 the first resistance
R2 the second resistance
R3 the 3rd resistance
R4 the 4th resistance
R5 the 5th resistance
R6 the 6th resistance
OP1A the first optocoupler assembly
OP1B the second optocoupler assembly
OP2B the 3rd optocoupler assembly
D1 the first diode
D2 the second diode
D3 the 3rd diode
D4 the 4th diode
Z1 the first stabilivolt
Z2 the second stabilivolt
C1 the first electric capacity
C2 the second electric capacity
J2A the first switch module
J2G second switch assembly
J1B the 3rd switch module
K1 SR
VCC power supply
GND ground wire
Detailed description of the invention
By particular specific embodiment, embodiment of the present utility model being described below, those skilled in the art can be understood other advantages of the present utility model and effect easily by the content disclosed by this specification.
Refer to Fig. 1.Notice, structure depicted in this specification institute accompanying drawings, the most only in order to coordinate the content disclosed in description, understand for those skilled in the art and read, it is not limited to the enforceable qualifications of this utility model, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, under not affecting effect that this utility model can be generated by and the purpose that can reach, all should still fall in the range of the technology contents disclosed in this utility model can be contained.Simultaneously, in this specification cited as " on ", D score, "left", "right", the term of " middle " and " " etc., it is merely convenient to understanding of narration, and it is not used to limit the enforceable scope of this utility model, being altered or modified of its relativeness, changing under technology contents without essence, when being also considered as the enforceable category of this utility model.
Refer to Fig. 1, be shown as a kind of start-up circuit connection diagram for safety relay of the present invention, as it is shown in figure 1, the start-up circuit for safety relay includes: power supply VCC；SR, has and presses signal output part；Triode ON circuit 3, has Continuity signal input and charge capacity end；Optocoupler input control circuit 1, has and presses signal input part and Continuity signal issuing side；Press signal input part to be connected to press signal output part；Continuity signal issuing side is coupled to Continuity signal input, for controlling the conducting state of triode ON circuit；Capacitor charge and discharge circuit 4, has electricity charge and discharge end；Charge capacity end is coupled to electricity charge and discharge end, for by changing self charging and discharging state control of discharge transistor circuit conducting state.Relay triggers circuit 2, has triggering signal input part；Trigger signal input part and be coupled to capacitor charge and discharge circuit, for adjusting triggering state according to capacitor charge and discharge circuit charging and discharging state.
Optocoupler input control circuit 1 includes: the first resistance R1, the second resistance R2 and the first optocoupler assembly OP1A；First resistance R1 is connected between power supply VCC and the second resistance R2；Second resistance R2 is connected to the first optocoupler assembly OP1A；First optocoupler assembly OP1A is connected between power supply VCC and ground wire GND；First optocoupler assembly OP1A is for controlling the conducting state of triode ON circuit 3.Wherein the variable condition of optical signal that diode produces can be converted into the signal of telecommunication by the optic coupling element in optocoupler input control circuit 1, senses the circuit state that button is pressed and that button discharges set out event for coordinating with other elements in circuit.
Relay triggers circuit and includes: the first switch module J2A, second switch assembly J2G, the 3rd switch module J1B, SR K1, the first diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4；
Relay coil J2A is connected with the negative pole of the second diode D2 and the negative pole of the 4th diode D4 simultaneously, for closing when pressing SR；The negative pole of relay coil J2A and the first diode D2 connects, and is connected to the positive pole of the 4th diode D4；Second switch assembly J2G is connected to power supply VCC；3rd switch module J1B is connected to power supply VCC and the positive pole of the first diode D1；SR K1 is connected to power supply VCC and the first resistance R1；It is connected to second switch assembly J2G and the positive pole of the second diode D2 and the positive pole of the 3rd diode D3.Wherein the 4th diode D4 is for storing stream diode, store stream diode often and energy storage appliance element with the use of, prevent voltage x current from suddenling change, it is provided that path.
First diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4 are for preventing reverse conduction diodes；First switch module J2A is relay coil；After in corresponding diagram 1, the relay coil of the first switch module J2A triggers, the relay relevant contacts action of corresponding second switch assembly J2G.Second switch assembly J2G is relay normally open contact；Relay coil triggers and normally opened contact is closed, for maintaining the self-locking of relay coil.3rd switch module J1B is a normally-closed contact, main with being the fault detection feedback of other circuit outside safety relay, when other electric circuit inspection are to after faulty, and this normally-closed contact can become opening a way.Make capacitor charge and discharge loop, it is impossible to charging so that start-up circuit lost efficacy.First diode D1 connects the first switch module J2A and the colelctor electrode of audion Q1, is used for maintaining triode ON circuit turn-on.
Triode ON circuit includes: audion Q1, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the first stabilivolt Z1, the second stabilivolt Z2, the first electric capacity C1, the second electric capacity C2, the second optocoupler assembly OP1B and the 3rd optocoupler assembly OP2B；Audion Q1 includes base stage, collector and emitter；First electric capacity C1 includes positive plate and negative plate；Second electric capacity C2 includes positive plate and negative plate.Electric capacity E2 and electric capacity charge circuit, in this charge circuit, D1 must connect negative terminal and the colelctor electrode of audion Q1 of relay coil J2A.The effect comprising Z1, Z2 is to improve the startup voltage of audion, and after starting safety relay, operator's maloperation manual reset button, safety relay output will not be made to disconnect.
The colelctor electrode of audion Q1 and relay trigger circuit 2 and couple, and emitter stage is connected to ground wire GND, and base stage connects the 3rd resistance R3, and connects the 4th resistance R4 and the positive pole of the first stabilivolt Z1；The positive plate of the first electric capacity C1 couples relay and triggers circuit 2 and capacitor charge and discharge circuit 4, and is connected to the 3rd optocoupler assembly OP2B, and the negative plate of the first electric capacity C1 connects the 5th resistance R5 and the 3rd optocoupler assembly OP2B；The positive plate of the second electric capacity C2 connects the negative pole of the second stabilivolt, the 6th resistance R6 and the second optocoupler assembly OP1B, and the negative plate of the second electric capacity C2 connects the second optocoupler assembly OP1B and the 6th resistance R6.
SR and relay trigger circuit and couple, and for triggering signal to the transmission of safety relay start-up circuit, the first switch module is relay coil.Relay coil is wrapped magnetic firmware, controls magnetic firmware electromagnetic force direction by changing the sense of current, triggers the contact on different directions, is a kind of electromagnetic induction switch element.In circuit state transformation process, coil is energized, produces electromagnetic force, control the contact action of bottom.
First diode connects the colelctor electrode of the first switch module and audion.For ensureing that a kind of manual reset circuit for safety relay, when breaking down, maintains the conducting of triode ON control circuit.
In sum, the pipeline high intensity of offer of the present utility model and tightness test frock and method, this manual reset circuit is mainly for solving the problems referred to above, have employed the processing method of a kind of Dynamic Signal: the contactor assembly pressing manual reset button, now SR corresponding is in closure state state, and the output of safety relay can not start, only when discharge manual reset button time, SR just can be in OFF state, the output of safety relay could start.Thus avoid producers and bypass the possibility of hand-reset function, it is ensured that the safety of production.This utility model meets the GB/T16855 description about hand-reset function, and meets Cat.4 safe class, and in a fault and the accumulation of fault, hand-reset function will not be bypassed.
Above-described embodiment only illustrative principle of the present utility model and effect thereof, not for limiting this utility model.Above-described embodiment all can be modified under spirit and the scope of the present utility model or change by any person skilled in the art.Therefore, art has all equivalence modification or changes that usually intellectual is completed under without departing from the spirit disclosed in this utility model and technological thought such as, must be contained by claim of the present utility model.
Claims (8)
1. the start-up circuit for safety relay, it is characterised in that including:
Power supply；
SR, has and presses signal output part；
Triode ON circuit, has Continuity signal input and charge capacity end；
Optocoupler input control circuit includes: the first resistance, the second resistance and the first optocoupler assembly, has and presses signal input part and Continuity signal issuing side；Described press signal input part be connected to described in press signal output part；Described Continuity signal issuing side is coupled to described Continuity signal input, for controlling the conducting state of described triode ON circuit；
Capacitor charge and discharge circuit, has electricity charge and discharge end；Described charge capacity end is coupled to described electricity charge and discharge end, for by changing transistor circuit conducting state described in self charging and discharging state control of discharge；
Relay triggers circuit, has triggering signal input part；Described triggering signal input part is coupled to described capacitor charge and discharge circuit, for adjusting triggering state according to described capacitor charge and discharge circuit charging and discharging state.
Start-up circuit for safety relay the most according to claim 1, it is characterised in that: described first resistance is connected between described power supply and described second resistance；Described second resistance is connected to described first optocoupler assembly；Described optocoupler assembly is connected between described power supply and ground wire；Described first optocoupler assembly is for controlling the conducting state of audion.
Start-up circuit for safety relay the most according to claim 1, it is characterised in that: described relay triggers circuit and includes: the first switch module, second switch assembly, the 3rd switch module, SR, the first diode, the second diode, the 3rd diode and the 4th diode；
Described first switch module is connected with the negative pole of described second diode and the negative pole of the 4th diode simultaneously, and described first switch module is connected with the negative pole of described first diode, and is connected to the positive pole of the 4th diode；Described second switch assembly is connected to power supply；Described 3rd switch module is connected to power supply and the positive pole of described first diode；Described SR is connected to power supply and described first resistance；The described positive pole being connected to second switch circuit and described second diode and the positive pole of described 3rd diode.
Start-up circuit for safety relay the most according to claim 3, it is characterised in that: described first diode, described second diode, described 3rd diode and described 4th diode are for preventing reverse conduction diodes；Described first switch module is relay coil；Described 3rd switch module is normally closed switch；Described first switch module is under self triggering state so that the relevant contacts action of relay；Described 3rd switch module is a normally-closed contact, for feeding back for fault.
Start-up circuit for safety relay the most according to claim 3, it is characterised in that: described first diode connects described first switch module and described audion, for the charging in capacitor charge and discharge loop.
Start-up circuit for safety relay the most according to claim 1, it is characterised in that: described triode ON circuit includes: audion, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first stabilivolt, the second stabilivolt, the first electric capacity, the second electric capacity, the second optocoupler assembly and the 3rd optocoupler assembly；Described audion includes base stage, collector and emitter；Described first electric capacity includes positive plate and negative plate；Described second electric capacity includes positive plate and negative plate；
The colelctor electrode of described audion and described relay trigger circuit and couple, and emitter stage is connected to ground wire, and base stage connects described 3rd resistance, and connects described 4th resistance and the positive pole of described first stabilivolt；The positive plate of described first electric capacity couples described relay and triggers circuit and described capacitor charge and discharge circuit, and is connected to described 3rd optocoupler assembly, and the negative plate of described first electric capacity connects described 5th resistance and the 3rd optocoupler assembly；The positive plate of described second electric capacity connects the negative pole of described second stabilivolt, described 6th resistance and described second optocoupler assembly, and the negative plate of described second electric capacity connects described second optocoupler assembly and the 6th resistance.
A kind of start-up circuit for safety relay the most according to claim 3, it is characterized in that: SR and described relay trigger circuit and couple, for triggering signal to the transmission of described safety relay start-up circuit, described first switch module is relay coil.
A kind of start-up circuit for safety relay the most according to claim 5, it is characterised in that: described first diode connects described first switch module and the described colelctor electrode of described audion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521125624.2U CN205428830U (en) | 2015-12-29 | 2015-12-29 | A starting circuit for safety relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521125624.2U CN205428830U (en) | 2015-12-29 | 2015-12-29 | A starting circuit for safety relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205428830U true CN205428830U (en) | 2016-08-03 |
Family
ID=56540023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521125624.2U Withdrawn - After Issue CN205428830U (en) | 2015-12-29 | 2015-12-29 | A starting circuit for safety relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205428830U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470045A (en) * | 2015-12-29 | 2016-04-06 | 上海辰竹仪表有限公司 | Starting circuit and method for safety relay |
| CN108832854A (en) * | 2018-09-10 | 2018-11-16 | 中控智慧科技股份有限公司 | A kind of screening machine and its power control circuit |
-
2015
- 2015-12-29 CN CN201521125624.2U patent/CN205428830U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470045A (en) * | 2015-12-29 | 2016-04-06 | 上海辰竹仪表有限公司 | Starting circuit and method for safety relay |
| CN105470045B (en) * | 2015-12-29 | 2019-05-17 | 上海辰竹仪表有限公司 | A kind of start-up circuit and method for safety relay |
| CN108832854A (en) * | 2018-09-10 | 2018-11-16 | 中控智慧科技股份有限公司 | A kind of screening machine and its power control circuit |
| CN108832854B (en) * | 2018-09-10 | 2024-05-03 | 熵基科技股份有限公司 | Security check machine and power control circuit thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20190517 |
|
| AV01 | Patent right actively abandoned |