CN205334279U - A safety control for cutting apparatus power return circuit - Google Patents
A safety control for cutting apparatus power return circuit Download PDFInfo
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- CN205334279U CN205334279U CN201521096741.0U CN201521096741U CN205334279U CN 205334279 U CN205334279 U CN 205334279U CN 201521096741 U CN201521096741 U CN 201521096741U CN 205334279 U CN205334279 U CN 205334279U
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Abstract
The utility model provides a safety control for cutting apparatus power return circuit, including first passageway and second channel, first passageway includes a passageway preparation module, a passageway startup module, a passageway auto -lock module sum channel output module, the second channel includes two preparation modules in the passageway, two startup module in the passageway, two auto -lock module sum channels in the passageway, two output module, control mutually between two passageways, the condition that each other starts for each interior module, the inside relay that adopts of controlling means is for forcing the direction relay, and each module could start output after must the self -diagnosis completion. The device can be reliable, the timely power return circuit that cuts off electromechanical device to the device has the self -diagnostic function, works as the accumulation that takes place a trouble or trouble and can not result in dangerous output, and the power return circuit that can normally cut off electromechanical device power return circuit or electromechanical device promptly can not be closed, guarantees output safely.
Description
Technical field
This utility model relates to electromechanical equipment dump control field, particularly relates to a kind of safety control for cutting off device power supply (DPS) loop。
Background technology
The raising of industrial production efficiency, it is desirable to the running frequency of electromechanical equipment, running speed is more and more higher, and thing followed production safety problem is also increasingly severeer。
Cutting off of the electrical source of power of electromechanical equipment realizes the small area analysis control to big electric current typically via common electric brake switch or employing relay。But in the occasion that some are more harsh, such as press, injection machine, elevator starts and controls, the abnormal adhesive of relay can cause the misoperation of these electromechanical equipments, error starting, the short trouble of such as common electric brake switch, causes that electromechanical equipment power supply can not be cut off again, these faults can cause extremely serious consequence: personal injury, produces shut-down etc.。
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is in that to provide a kind of safety control for cutting off device power supply (DPS) loop, the problems such as loop of not easily cutting off the electricity supply during for solving misoperation that in prior art, electromechanical equipment brings, error starting and short circuit because of the abnormal adhesive of relay。
For achieving the above object, this utility model adopts below scheme: a kind of safety control for cutting off device power supply (DPS) loop, including first passage and second channel；The internal module of described first passage mainly includes passage steady module, passage one starts module, passage one self-locking module and passage one output module；The internal module of described second channel mainly includes passage two preparation module, passage two starts module, passage two self-locking module and passage two output module；The outfan of the outfan of described passage steady module and described passage two self-locking module is by starting module with output behind the door to described passage one, described passage one starts the outfan of module and inputs described passage one self-locking module, and described passage one self-locking module outfan inputs described passage one output module；Described passage two preparation module outfan and described passage steady module outfan are by starting module with output behind the door to described passage two, described passage two starts the outfan of module and inputs described passage two self-locking module, and described passage two self-locking module outfan inputs described passage two output module；Described passage one output module and described passage two output module connect。
In this utility model one embodiment, also including the supply module providing DC source, described supply module accesses DC source；The input terminal of described first passage includes terminal S11 and S12, described terminal S11 and connects the DC source of described supply module output；The input terminal of described second channel includes terminal S52, S34, S21 and S22, and described terminal S11, S12, S21 and S22 access the press button of double-contact, and described terminal S52 and S34 is connected with described terminal S11 and S12 by wire；Described passage steady module, described passage one start module, described passage two preparation module, described passage two starts module and described passage two self-locking module is all connected with described terminal S22；Described terminal S21 ground connection。
In this utility model one embodiment, described passage steady module includes electrochemical capacitor E2, optocoupler input OP2A and resistance R34, one end of the positive pole described resistance R34 of series connection of described optocoupler input OP2A, the other end of described resistance R34 and the positive pole of described electrochemical capacitor E2 all meet described terminal S12；The negative pole of the negative pole of described electrochemical capacitor E2 and described optocoupler input OP2A meets described terminal S22 each through relay contact J2C；Described passage one starts module and includes optocoupler output OP1B, audion Q1, resistance R6, R10 of being in series and described relay contact J2C, described optocoupler output OP1B one end connects one end of described resistance R6, and the other end of described resistance R6 connects one end of described resistance R10；The base stage of described audion Q1 is connected between described resistance R6 and described resistance R10, the colelctor electrode of described audion Q1 connects one end of described relay coil J1A, and the other end that the other end of described relay coil J1A exports OP1B with described optocoupler all accesses described terminal S12；The emitter stage of described audion Q1 and the other end of described resistance R10 are connected to described terminal S22 each through described relay contact J2C；The colelctor electrode of described audion Q1 is also connected with described passage one self-locking module；Described passage one self-locking module mainly includes current-limiting circuit and relay contact J1F, ground connection after the described current-limiting circuit outfan described relay contact J1F of connection。
In this utility model one embodiment, described passage two preparation module includes optocoupler input OP3A and resistance R8, described optocoupler input OP3A negative pole accesses described terminal S22, described optocoupler input OP3A positive pole connects one end of described resistance R8, the described resistance R8 other end connects described input terminal S52, and connects described passage two self-locking module by relay contact J2G；Described passage two self-locking module include current-limiting circuit, optocoupler input OP1A, resistance R14, successively forward series connection diode D9, D10, D11 and described relay contact J2G；Described current-limiting circuit input is connected with described relay contact J2G, and outfan connects described optocoupler input OP1A positive pole and described diode D9 positive pole respectively；Described optocoupler input OP1A negative pole is in parallel with described diode D9, D10, D11 after connecting with described resistance R14, and final outfan connects described passage two and starts module；Described passage two starts module and includes audion Q5, audion Q7, optocoupler output OP2B, optocoupler output OP3B, resistance R15, R23, R31 and relay contact J1B；The emitter stage of described audion Q5 accesses terminal S34, one end of collector connection relay coil J2A by described relay contact J1B, and base stage connects one end of described resistance R23；The other end of described resistance R23 connects the colelctor electrode of described audion Q7, the base stage of described audion Q7 connects one end of described resistance R31, it is simultaneously connected with one end of described optocoupler output OP2B, the other end of described optocoupler output OP2B connects one end of described optocoupler output OP3B, the other end of described optocoupler output OP3B connects one end of described resistance R15, and the other end of described resistance R15 connects the emitter stage of described audion Q5；The other end of described resistance R33, the emitter stage of described audion Q7 and the other end of described relay coil J2A all access described terminal S22。
In this utility model one embodiment, described optocoupler input OP1A, OP2A and OP3A export OP1B, OP2B and OP3B with described optocoupler respectively and couple。
In this utility model one embodiment, described passage one output module and passage two output module form by multiple relay contacts, and at least include a normally opened contact in the plurality of relay contact。
In this utility model one embodiment, described passage one output module and passage two output module form by relay contact；Described passage one output module includes relay contact J1C, J1G, J1E and J1D, and input is connected respectively input terminal 41,13,23 and 33；Described passage two output module includes relay contact J2B, J2F, J2E and J2D, and outfan is connected respectively lead-out terminal 42,14,24 and 34；The outfan of described relay contact J1G, J1E, J1D connects the input of described relay contact J2F, J2E and J2D respectively；The outfan of described relay contact J1C connects the outfan of described relay contact J2B, and the input of described relay contact J2B connects the input of described relay contact J1C。
In this utility model one embodiment, described relay contact J1C and J2B is normally-closed contact, and described relay contact J1G, J1E, J1D, J2F, J2E and J2D are normally opened contact。
In this utility model one embodiment, described terminal S21 connects one end of electric fuse, the other end ground connection of described electric fuse。
In this utility model one embodiment, the voltage of the DC source that described supply module accesses is 24V。
In sum, safety control for cutting off device power supply (DPS) loop of the present utility model includes first passage and second channel, two interchannels are monitored mutually, the condition that each internal module starts each other, controlling the internal relay adopted of device is forced guiding relay, each module must self diagnosis complete after could start output, so having the advantages that
This device can cut off the electric power loop of electromechanical equipment reliably, timely, and this device has self-diagnostic function, when the accumulation that a fault or fault occur can't cause dangerous output, namely can the electric power loop of normal cutoff electromechanical equipment electric power loop or electromechanical equipment can not close, it is ensured that Safety output。
Accompanying drawing explanation
Fig. 1 is shown as this utility model for cutting off the safety control in the device power supply (DPS) loop module diagram in an embodiment。
Fig. 2 is shown as this utility model for cutting off the safety control in the device power supply (DPS) loop inner control logic schematic diagram in an embodiment。
Fig. 3 is shown as this utility model for cutting off passage one output module and passage two output module output block diagram in an embodiment in the safety control in device power supply (DPS) loop。
Element numbers explanation
11 passage steady modules
12 passages one start module
13 passage one self-locking modules
14 passage one output modules
21 passage two preparation module
22 passages two start module
23 passage two self-locking modules
24 passage two output modules
3 supply modules
Detailed description of the invention
Below by way of specific instantiation, embodiment of the present utility model being described, those skilled in the art the content disclosed by this specification can understand other advantages of the present utility model and effect easily。This utility model can also be carried out by additionally different detailed description of the invention or apply, and the every details in this specification based on different viewpoints and application, can also carry out various modification or change under without departing from spirit of the present utility model。It should be noted that, when not conflicting, following example and the feature in embodiment can be mutually combined。
It should be noted that, the diagram provided in following example only illustrates basic conception of the present utility model in a schematic way, then assembly that in graphic, only display is relevant with this utility model but not component count when implementing according to reality, shape and size drafting, during its actual enforcement, the kenel of each assembly, quantity and ratio can be a kind of random change, and its assembly layout kenel is likely to increasingly complex。
This utility model relates to electromechanical equipment dump control field, is mainly used in electromechanical equipment when breaking down or need emergent stopping, it is possible to cut off the electrical source of power of electromechanical equipment, the safety of the protection person and electromechanical equipment reliably, timely。
Refer to Fig. 1, be shown as this utility model for cutting off the safety control in the device power supply (DPS) loop module diagram in an embodiment, including first passage and second channel；The internal module of described first passage mainly includes passage steady module 11, passage one starts module 12, passage one self-locking module 13 and passage one output module 14；The internal module of described second channel mainly includes passage two preparation module 21, passage two starts module 22, passage two self-locking module 23 and passage two output module 24；The outfan of the outfan of described passage steady module 11 and described passage two self-locking module 23 is by starting module 12 with output behind the door to described passage one, described passage one starts the outfan of module 12 and inputs described passage one self-locking module 13, and described passage one self-locking module 13 outfan inputs described passage one output module 14；Described passage two preparation module 21 outfan and described passage steady module 11 outfan are by starting module 22 with output behind the door to described passage two, described passage two starts the outfan of module 22 and inputs described passage two self-locking module 23, and described passage two self-locking module 23 outfan inputs described passage two output module 24；Described passage one output module 14 and described passage two output module 24 connect。
This utility model also includes the supply module 3 providing DC source for the safety control cutting off device power supply (DPS) loop; input terminal A1 and the A2 of described supply module 3 accesses DC source, and described supply module 3 provides a reliable DC source by built-in redundancy excess voltage protection。The input terminal of described first passage includes terminal S11 and S12, described terminal S11 and connects the DC source of described supply module 3 output；The input terminal of described second channel includes terminal S52, S34, S21 and S22, and described terminal S11, S12, S21 and S22 access the press button of double-contact, and described terminal S52 and S34 is connected with described terminal S11 and S12 by wire；Described passage steady module 11, described passage one start module 12, described passage two preparation module 21, described passage two starts module 22 and described passage two self-locking module 23 is all connected with described terminal S22；Described terminal S21 connects one end of electric fuse F2, the other end ground connection of described electric fuse。
Fig. 2 is shown as this utility model for cutting off the safety control in the device power supply (DPS) loop inner control logic schematic diagram in an embodiment。Described passage steady module 11 includes electrochemical capacitor E2, optocoupler input OP2A and resistance R34, and one end of the positive pole described resistance R34 of series connection of described optocoupler input OP2A, the other end of described resistance R34 and the positive pole of described electrochemical capacitor E2 all meet described terminal S12；The negative pole of the negative pole of described electrochemical capacitor E2 and described optocoupler input OP2A meets described terminal S22 each through relay contact J2C；Described passage one starts module 12 and includes optocoupler output OP1B, audion Q1, resistance R6, R10 of being in series and described relay contact J2C, described optocoupler output OP1B one end connects one end of described resistance R6, and the other end of described resistance R6 connects one end of described resistance R10；The base stage of described audion Q1 is connected between described resistance R6 and described resistance R10, the colelctor electrode of described audion Q1 connects one end of described relay coil J1A, and the other end that the other end of described relay coil J1A exports OP1B with described optocoupler all accesses described terminal S12；The emitter stage of described audion Q1 and the other end of described resistance R10 are connected to described terminal S22 each through described relay contact J2C；The colelctor electrode of described audion Q1 is also connected with described passage one self-locking module 13；Described passage one self-locking module 13 mainly includes current-limiting circuit and relay contact J1F, ground connection after the described current-limiting circuit outfan described relay contact J1F of connection。
Described passage two preparation module 21 includes optocoupler input OP3A and resistance R8, described optocoupler input OP3A negative pole accesses described terminal S22, described optocoupler input OP3A positive pole connects one end of described resistance R8, the described resistance R8 other end connects described input terminal S52, and connects described passage two self-locking module 23 by relay contact J2G；Described passage two self-locking module 23 include current-limiting circuit, optocoupler input OP1A, resistance R14, successively forward series connection diode D9, D10, D11 and described relay contact J2G；Described current-limiting circuit input is connected with described relay contact J2G, and outfan connects described optocoupler input OP1A positive pole and described diode D9 positive pole respectively；Described optocoupler input OP1A negative pole is in parallel with described diode D9, D10, D11 after connecting with described resistance R14, and final outfan connects described passage two and starts module 22；Described passage two starts module 22 and includes audion Q5, audion Q7, optocoupler output OP2B, optocoupler output OP3B, resistance R15, R23, R31 and relay contact J1B；The emitter stage of described audion Q5 accesses terminal S34, one end of collector connection relay coil J2A by described relay contact J1B, and base stage connects one end of described resistance R23；The other end of described resistance R23 connects the colelctor electrode of described audion Q7, the base stage of described audion Q7 connects one end of described resistance R31, it is simultaneously connected with one end of described optocoupler output OP2B, the other end of described optocoupler output OP2B connects one end of described optocoupler output OP3B, the other end of described optocoupler output OP3B connects one end of described resistance R15, and the other end of described resistance R15 connects the emitter stage of described audion Q5；The other end of described resistance R33, the emitter stage of described audion Q7 and the other end of described relay coil J2A all access described terminal S22。
Described optocoupler input OP1A, OP2A and OP3A export OP1B, OP2B and OP3B with described optocoupler respectively and couple。
In this embodiment, described optocoupler output OP1B, OP2B and OP3B all comprise the diode of the phototriode of an opto-electronic conversion, an audion amplifying signal and a rectification；The base stage of described audion connects the emitter stage of described phototriode, and colelctor electrode connects the colelctor electrode of described phototriode, is simultaneously connected with the negative pole of described diode, and emitter stage connects the positive pole of described diode。
In this embodiment, described passage one output module 14 and passage two output module 24 form by multiple relay contacts, and at least include a normally opened contact in the plurality of relay contact。
Fig. 3 is shown as this utility model and forms by relay contact for cutting off passage one output module and passage two output module output block diagram in an embodiment in the safety control in device power supply (DPS) loop, described passage one output module 14 and passage two output module 24；Described passage one output module 14 includes relay contact J1C, J1G, J1E and J1D, and input is connected respectively input terminal 41,13,23 and 33；Described passage two output module 24 includes relay contact J2B, J2F, J2E and J2D, and outfan is connected respectively lead-out terminal 42,14,24 and 34；The outfan of described relay contact J1G, J1E, J1D connects the input of described relay contact J2F, J2E and J2D respectively；The outfan of described relay contact J1C connects the outfan of described relay contact J2B, and the input of described relay contact J2B connects the input of described relay contact J1C。
In this embodiment, described relay contact J1C and J2B is normally-closed contact, and described relay contact J1G, J1E, J1D, J2F, J2E and J2D are normally opened contact, and the voltage of the DC source that described supply module 3 accesses is 24V。
This utility model is for cutting off the operation principle of the safety control in device power supply (DPS) loop: the internal each module of safety control all has two kinds of output states: when initial conditions does not have fault for " 1 " and this inside modules, module is output as " 1 "；Other situation modules are output as " 0 "。Passage two starts the output signal of module 22 monitor channel steady module 11, when passage steady module 11 exports signal for " 1 ", passage two starts module 22 ability normal operation, passage two self-locking module 23 works subsequently, after passage two self-locking module 23 normal operation, feed back " 1 " signal and start module 12 to passage one, passage one starts after module 12 monitors this signal, start working, and passage one self-locking module 13 is worked, passage one output module 14 and passage two output module 24 form by relay contact, constitute a redundant safety output。Diagnosis and process to the Safety output circuit closed of safety control, cut-out and fault below is analyzed。
1, the Safety output circuit closed of this utility model safety control is analyzed as follows:
(1) after powering on, button K1 closes, and electrochemical capacitor E2 is charged by DC source VCC by input terminal S11 and this loop of input terminal S12, and the capacitance of electrochemical capacitor E2 generally takes more than 200uF, this capacitance can so that when electric discharge, having the electricity of abundance to make subsequent conditioning circuit start。
(2), after button K1 Guan Bi, optocoupler input OP2A and optocoupler input OP3A obtains electric, through overcoupling, making optocoupler output OP2B and optocoupler output OP3B conducting and then audion Q7 conducting, audion Q5 turns on, relay coil J2A is obtained electric, the relevant contacts action of relay J 2。
(3) the relevant contacts action of relay J 2, the normally opened relay contact J2G closing of contact, constitute self-locking circuit with current-limiting circuit and relay coil J2A, second channel output loop starts。
(4) after relay J 2 relevant contacts action, normally closed relay contact J2C disconnects, and optocoupler input OP1A obtains electric, electrochemical capacitor E2 discharges, optocoupler output OP1B conducting, and audion Q1 turns on, relay coil J1A is obtained electric, the relevant contacts action of relay J 1。
(5) the relevant contacts action of relay J 1, normally opened relay contact J1F closes, and constitutes self-locking circuit with current-limiting circuit and relay coil J1A, and first passage output loop starts。
(6) second channel output loop starts, and first passage output loop starts, and equipment safety output loop closes。
2, Safety output loop analysis is cut off as follows:
(1) K1 is double-contact button, and when pressing K1, contact connects disconnection, and when discharging K1, contact connects Guan Bi。
(2) when pressing K1, the connection of input terminal S12 and DC source VCC disconnects, relay coil J1A dead electricity, and passage one output module 14 disconnects。
(3) when pressing K2, the connection of input terminal S22 and earth terminal GND disconnects, relay coil J2A dead electricity, and passage two output module 24 disconnects。
(4) first passage and second channel are Redundancy Design, disconnect any one module, can shearing device Safety output loop。
3, the diagnosis of fault is as follows with Treatment Analysis:
(1) contact of relay logical super-high-current for a long time there will be contact adhesion phenomenon, the forced guiding type relay that safety device of the present utility model adopts, when normally opened contact generation contact adhesion phenomenon, other contacts such as normally-closed contact of this relay, necessarily it is in normally open。When there is bonding such as relay J 1D contact, relay contact J1B is off。After pressing K1 button, the output of second channel can normally disconnect, it is ensured that safety control can normal cutoff equipment current supply circuit。During release K1, passage two starts module 22 and can diagnose relay contact J1B and be off, and second channel output cannot close, it is ensured that Safety output。The analysis of second channel contact adhesion is analyzed similar with first passage contact adhesion, repeats no more。
(2) the abnormal adhesive fault of relay, similar with above-mentioned analysis, repeats no more。
(3) when button wire is short-circuited fault because of reasons such as broken skins, DC source VCC and earth terminal GND is short-circuited, and immediate current is relatively big, and resettable fuse F2 can disconnect immediately, the output making second channel disconnects, the Safety output loop of shearing device。
(4) when the internal component of safety control breaks down, because adopting Fail-safe method for designing, the fault of random devices all can make after pressing K1 button, and the output loop of device is cut off, being analyzed as follows of part of devices:
1. the open circuit short trouble of electrochemical capacitor E2, when pressing K1, relay coil J1A and J2A dead electricity, device output loop can be to sever immediately upon impact by the firing pin。Upper once start time, passage one starts the circuit of module 12 can diagnose this fault, and passage one starts the circuit of module 12 and can not start, and device output loop can not close。
2. the open circuit short trouble of optocoupler input OP2A, when pressing K1, relay coil J1A and J2A dead electricity, device output loop can be to sever immediately upon impact by the firing pin。Upper once start time, passage two starts the circuit of module 22 can diagnose this fault, and passage two starts the circuit of module 22 and can not start, and device output loop can not close。
3. the open fault of optocoupler output OP1B, when pressing K1, relay coil J1A, J2A dead electricity, device output loop can be to sever immediately upon impact by the firing pin。Upper once start time, passage one starts module 12 circuit can diagnose this fault, and passage one starts module 12 circuit and can not start, and device output loop can not close。
4. the short trouble of optocoupler output OP1B, when pressing K1, relay coil J1A, J2A dead electricity, device output loop can be to sever immediately upon impact by the firing pin。
5. the open fault of audion Q1, when pressing K1, relay coil J1A, J2A dead electricity, device output loop can be to sever immediately upon impact by the firing pin。Upper once start time, passage one starts module 12 circuit can diagnose this fault, and passage one starts module 12 circuit and can not start, and device output loop can not close。
6. the short trouble of audion Q1, when pressing K1, relay coil J1A, J2A dead electricity, device output loop can be to sever immediately upon impact by the firing pin。
7. the accident analysis of second channel components and parts is similar with first passage。
As mentioned above, safety control for cutting off device power supply (DPS) loop of the present utility model, including first passage and second channel, two interchannels are monitored mutually, the condition that each internal module starts each other, controlling the internal relay adopted of device is forced guiding relay, each module must self diagnosis complete after could start output。This safety control can reliably and timely cut off the electric power loop of electromechanical equipment, and this device has self-diagnostic function, when the accumulation that a fault or fault occur can't cause dangerous output, namely can the electric power loop of normal cutoff electromechanical equipment electric power loop or electromechanical equipment can not close, it is ensured that Safety output。So, this utility model effectively overcomes various shortcoming of the prior art and has high industrial utilization。
Above-described embodiment only illustrative principle of the present utility model and effect thereof, not for restriction this utility model。Above-described embodiment all under spirit of the present utility model and category, can be modified or change by any those skilled in the art。Therefore, art has all equivalence modification or changes that usually intellectual completes under the spirit disclosed without departing from this utility model with technological thought such as, must be contained by claim of the present utility model。
Claims (10)
1. the safety control being used for cutting off device power supply (DPS) loop, it is characterised in that include first passage and second channel；
The internal module of described first passage mainly includes passage steady module, passage one starts module, passage one self-locking module and passage one output module；
The internal module of described second channel mainly includes passage two preparation module, passage two starts module, passage two self-locking module and passage two output module；
The outfan of the outfan of described passage steady module and described passage two self-locking module is by starting module with output behind the door to described passage one, described passage one starts the outfan of module and inputs described passage one self-locking module, and described passage one self-locking module outfan inputs described passage one output module；
Described passage two preparation module outfan and described passage steady module outfan are by starting module with output behind the door to described passage two, described passage two starts the outfan of module and inputs described passage two self-locking module, and described passage two self-locking module outfan inputs described passage two output module；
Described passage one output module and described passage two output module connect。
2. the safety control for cutting off device power supply (DPS) loop according to claim 1, it is characterised in that also including the supply module providing DC source, described supply module accesses DC source；
The input terminal of described first passage includes terminal S11 and S12, described terminal S11 and connects the DC source of described supply module output；The input terminal of described second channel includes terminal S52, S34, S21 and S22, and described terminal S11, S12, S21 and S22 access the press button of double-contact, and described terminal S52 and S34 is connected with described terminal S11 and S12 by wire；Described passage steady module, described passage one start module, described passage two preparation module, described passage two starts module and described passage two self-locking module is all connected with described terminal S22；Described terminal S21 ground connection。
3. the safety control for cutting off device power supply (DPS) loop according to claim 2, it is characterised in that
Described passage steady module includes electrochemical capacitor E2, optocoupler input OP2A and resistance R34, and one end of the positive pole described resistance R34 of series connection of described optocoupler input OP2A, the other end of described resistance R34 and the positive pole of described electrochemical capacitor E2 all meet described terminal S12；The negative pole of the negative pole of described electrochemical capacitor E2 and described optocoupler input OP2A meets described terminal S22 each through relay contact J2C；
Described passage one starts module and includes optocoupler output OP1B, audion Q1, resistance R6, R10 of being in series and described relay contact J2C, described optocoupler output OP1B one end connects one end of described resistance R6, and the other end of described resistance R6 connects one end of described resistance R10；The base stage of described audion Q1 is connected between described resistance R6 and described resistance R10, the colelctor electrode of described audion Q1 connects one end of described relay coil J1A, and the other end that the other end of described relay coil J1A exports OP1B with described optocoupler all accesses described terminal S12；The emitter stage of described audion Q1 and the other end of described resistance R10 are connected to described terminal S22 each through described relay contact J2C；
The colelctor electrode of described audion Q1 is also connected with described passage one self-locking module；
Described passage one self-locking module mainly includes current-limiting circuit and relay contact J1F, ground connection after the described current-limiting circuit outfan described relay contact J1F of connection。
4. the safety control for cutting off device power supply (DPS) loop according to claim 3, it is characterised in that
Described passage two preparation module includes optocoupler input OP3A and resistance R8, described optocoupler input OP3A negative pole accesses described terminal S22, described optocoupler input OP3A positive pole connects one end of described resistance R8, the described resistance R8 other end connects described input terminal S52, and connects described passage two self-locking module by relay contact J2G；
Described passage two self-locking module include current-limiting circuit, optocoupler input OP1A, resistance R14, successively forward series connection diode D9, D10, D11 and described relay contact J2G；Described current-limiting circuit input is connected with described relay contact J2G, and outfan connects described optocoupler input OP1A positive pole and described diode D9 positive pole respectively；Described optocoupler input OP1A negative pole is in parallel with described diode D9, D10, D11 after connecting with described resistance R14, and final outfan connects described passage two and starts module；
Described passage two starts module and includes audion Q5, audion Q7, optocoupler output OP2B, optocoupler output OP3B, resistance R15, R23, R31 and relay contact J1B；The emitter stage of described audion Q5 accesses terminal S34, one end of collector connection relay coil J2A by described relay contact J1B, and base stage connects one end of described resistance R23；The other end of described resistance R23 connects the colelctor electrode of described audion Q7, the base stage of described audion Q7 connects one end of described resistance R31, it is simultaneously connected with one end of described optocoupler output OP2B, the other end of described optocoupler output OP2B connects one end of described optocoupler output OP3B, the other end of described optocoupler output OP3B connects one end of described resistance R15, and the other end of described resistance R15 connects the emitter stage of described audion Q5；The other end of described resistance R33, the emitter stage of described audion Q7 and the other end of described relay coil J2A all access described terminal S22。
5. the safety control for cutting off device power supply (DPS) loop according to claim 4, it is characterised in that described optocoupler input OP1A, OP2A and OP3A export OP1B, OP2B and OP3B with described optocoupler respectively and couple。
6. the safety control for cutting off device power supply (DPS) loop according to claim 5, it is characterized in that, described passage one output module and passage two output module form by multiple relay contacts, and at least include a normally opened contact in the plurality of relay contact。
7. the safety control for cutting off device power supply (DPS) loop according to claim 6, it is characterised in that described passage one output module includes relay contact J1C, J1G, J1E and J1D, and input is connected respectively input terminal 41,13,23 and 33；
Described passage two output module includes relay contact J2B, J2F, J2E and J2D, and outfan is connected respectively lead-out terminal 42,14,24 and 34；
The outfan of described relay contact J1G, J1E, J1D connects the input of described relay contact J2F, J2E and J2D respectively；The outfan of described relay contact J1C connects the outfan of described relay contact J2B, and the input of described relay contact J2B connects the input of described relay contact J1C。
8. the safety control for cutting off device power supply (DPS) loop according to claim 7, it is characterised in that described relay contact J1C and J2B is normally-closed contact, and described relay contact J1G, J1E, J1D, J2F, J2E and J2D are normally opened contact。
9. the safety control for cutting off device power supply (DPS) loop according to claim 2, it is characterised in that described terminal S21 connects one end of electric fuse, the other end ground connection of described electric fuse。
10. the safety control for cutting off device power supply (DPS) loop according to claim 2, it is characterised in that the voltage of the DC source that described supply module accesses is 24V。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521096741.0U CN205334279U (en) | 2015-12-24 | 2015-12-24 | A safety control for cutting apparatus power return circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521096741.0U CN205334279U (en) | 2015-12-24 | 2015-12-24 | A safety control for cutting apparatus power return circuit |
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| CN205334279U true CN205334279U (en) | 2016-06-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388958A (en) * | 2015-12-24 | 2016-03-09 | 上海辰竹仪表有限公司 | Safe control device for cutting off equipment power supply circuit |
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- 2015-12-24 CN CN201521096741.0U patent/CN205334279U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388958A (en) * | 2015-12-24 | 2016-03-09 | 上海辰竹仪表有限公司 | Safe control device for cutting off equipment power supply circuit |
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