CN202720483U - Digital signal driving interface card with isolation function and bypass based on programmable logic controller (PLC) - Google Patents
Digital signal driving interface card with isolation function and bypass based on programmable logic controller (PLC) Download PDFInfo
- Publication number
- CN202720483U CN202720483U CN 201220329571 CN201220329571U CN202720483U CN 202720483 U CN202720483 U CN 202720483U CN 201220329571 CN201220329571 CN 201220329571 CN 201220329571 U CN201220329571 U CN 201220329571U CN 202720483 U CN202720483 U CN 202720483U
- Authority
- CN
- China
- Prior art keywords
- relay
- plc
- external signal
- termination
- diode
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Programmable Controllers (AREA)
Abstract
The utility model discloses a digital signal driving interface card with an isolation function and a bypass based on a programmable logic controller (PLC). The digital signal driving interface card comprises a PLC end input interface J1, a PLC end isolation protection circuit, a bypass end isolation protection circuit, external signal output interfaces J2 and J3 and an external signal input interface J4. The interface card has two working modes, namely a PLC normal working mode and a bypass emergency control mode; by a relay, a digital signal is electrically isolated from a PLC module; furthermore, when one mode works, the other working mode can be isolated; due to IN4007, the module can be effectively prevented from being burned by reverse current or power short circuit is avoided; due to a printed circuit board (PCB), complicated wiring work of steps in the conventional process is eliminated; only if the PCB is connected to a reality level and the PLC module, communication is realized; and therefore, the working efficiency is greatly improved.
Description
Technical field
The utility model belongs to the switching value output control technology field in the robotization control, relates to a kind of digital signal based on the isolation of PLC band and bypass and drives interface card.
Background technology
Variation with rapid changepl. never-ending changes and improvements is occuring in modern science and technology, and robotization, intellectuality are pursued in the control of equipment, and this just need to export a large amount of scenes to controlled device and drive signal, realizes the control to discrete control equipment such as various solenoid valves, DC contactor and signal lamps.Particularly at industrial circle, modularization, the strong PLC of dirigibility are widely adopted, and the on-the-spot a large amount of digital signal of demand motive control is equipped with a plurality of multichannel digital signal driver modules.
The way that extensively adopts at present is to select a large amount of connection terminals, wire casing, guide rail to realize the wiring installation, hardware cost is high, and the installing space that takies is large, virtually increased volume, weight and the floor area of switch board, particularly for ocean platform, an inch of land is an inch of gold, simultaneously because signalling channel is many, so that wiring is complicated, not attractive in appearance, maintenance and inspection inconvenience, the Installation and Debugging maintenance efficiency is low.
Summary of the invention
The purpose of this utility model provides a kind of digital signal based on PLC band isolation and bypass and drives interface card, has solved in the prior art because signalling channel is many, has wiring complexity, the problem that not attractive in appearance, maintenance and inspection are inconvenient, the Installation and Debugging maintenance efficiency is low.
The technical scheme that the utility model adopts is; a kind of digital signal based on the isolation of PLC band and bypass drives interface card; comprise PLC end input interface J1, PLC end isolation protective circuit, bypass end isolation protective circuit, external signal output interface J2 and J3, external signal input interface J4; be connected to each other common composition pcb board card
PLC end isolation protective circuit input end wherein is connected with PLC digital output module by PLC end input interface J1, and PLC end isolation protective circuit is connected with the controlled device of field level with J3 by external signal output interface J2 simultaneously; In addition, external signal input interface J4 and the bypass control linkage of meeting an urgent need, external signal input interface J4 is connected with bypass end isolation protective circuit input end, and bypass end isolation protective circuit output terminal is connected with the output terminal of PLC end isolation protective circuit;
The negative pole of one termination PLC power supply of No. 1 end of described PLC end input interface J1, RLY1, RLY2 that another termination links to each other with diode D16 anode ... the coil-end of RLY16 relay, all the other are 17,16 years old ... No. 2 the terminated line mode is consistent, the 1 tunnel output of one termination PLC digital output module of No. 17 ends, the coil-end of the RLY1 relay that another termination links to each other with diode D1 negative terminal; The 2 tunnel output of one termination PLC digital output module of No. 16 ends, the coil-end of the RLY2 relay that another termination links to each other with diode D2 negative terminal;
The positive source of one termination controlled device of No. 17 ends of external signal output interface J2, another relay termination RLY1, RLY2 ... the switch-side corresponding end of RLY16 is interconnect successively, all the other are 1,2 years old ... No. 16 the terminated line mode is consistent, the positive pole of one termination field level the 1 road controlled device of No. 1 end, the switch-side moving contact end of another relay termination RLY1; The positive pole of one termination the 2 road controlled device of No. 2 ends, the switch-side moving contact end of another relay termination RLY2; The rest may be inferred,
The power cathode of No. 17 termination controlled devices of external signal output interface J3, the negative pole of No. 1 termination the 1 road controlled device, the negative pole of No. 2 termination the 2 road controlled devices, the rest may be inferred, 1,2 of external signal output interface J3 ... 17 other ends interconnect successively,
The 24VDC output terminal of one termination 24VDC industrial power of No. 1 end of external signal input interface J4, another relay termination RLY1, RLY2 ... the switch-side corresponding end of RLY16 is interconnect successively; The 0VDC output terminal of one termination 24VDC industrial power of No. 2 ends, the coil-end of the RLY17 relay that another termination links to each other with diode D17 negative terminal; All the other are 18,17 years old ... No. 3 the end connected mode is consistent, the output terminal of the emergent control in a termination 1 roadside road of No. 18 ends, and another termination connects the coil-end of the RLY17 relay that links to each other with diode D17 negative terminal; The output terminal of the emergent control in one termination, the 2 roadside road of No. 17 ends, another termination connects the coil-end of the RLY18 relay that links to each other with diode D18 negative terminal; The rest may be inferred.
The beneficial effects of the utility model are, this digital signal drives the access function that interface card possesses PLC normal mode of operation, the emergent control model of bypass, realized the electrical isolation between on-the-spot and PLC controller, the two kinds of control models, obviously reduce installing space, reduce the size of control box, alleviate the workload that the wiring personnel are installed, improve the Installation and Debugging work efficiency, reduced production cost, can expand, used flexibly.
Description of drawings
Fig. 1 is the integral module block diagram that digital signal of the present utility model drives interface card;
Fig. 2 is the circuit diagram of the PLC end isolation protective circuit 2 in the utility model device;
Fig. 3 is the circuit diagram of the bypass end isolation protective circuit 5 in the utility model device;
Fig. 4 is the circuit diagram of IO interface J1, J2, J3 and J4 in the utility model device;
Fig. 5 is the wiring schematic diagram of system model change-over switch and contingency mode gauge tap.
Among the figure, 1.PLC digital output module, 2.PLC holds isolation protective circuit, 3. controlled device, the 4. emergent control of bypass, 5. bypass end isolation protective circuit.
In addition, J1 is PLC end input interface, and J2 and J3 all are external signal output interfaces, and J4 is external signal input interface;
RLY1, RLY2 ... RLY16 represents respectively the PLC end disconnecting relay of 16 passages;
RLY17, RLY18 ... RLY32 represents respectively the bypass end disconnecting relay of 16 passages;
24VSPDT represents that relay is standard 24V direct current output type;
DIODE is the title that diode is given tacit consent in component library;
D1, D2 ... D32 represents respectively 32 IN4007 diodes;
DO1, DO2 ... DO16 represents respectively the 16 railway digital output signals of PLC;
OUTPUT1+, OUTPUT1-... OUTPUT16+, OUTPUT16-represent respectively field level 16 way solenoid valves (or contactor, signal lamp) the positive and negative signal end of equipment;
SIGNAL1, SIGNAL2 ... SIGNAL16 represents respectively the emergent control in 16 roadside road (or button) signal.
S1, S2 ... S8 represents respectively 8 emergent gauge tap (or button).
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
With reference to Fig. 1; the utility model is that a kind of digital signal based on the isolation of PLC band and bypass drives interface card; its modular structure is shown in the dotted line frame; comprise PLC end input interface J1, PLC end isolation protective circuit 2, bypass end isolation protective circuit 5, external signal output interface J2 and J3, external signal input interface J4; be connected to each other common composition pcb board card
PLC end isolation protective circuit 2 input ends wherein are connected with PLC digital output module 1 by PLC end input interface J1, and PLC end isolation protective circuit 2 is connected with the controlled device 3 of field level with J3 by external signal output interface J2 simultaneously; In addition, external signal input interface J4 is connected with the emergent control 4 of bypass, and external signal input interface J4 is connected with bypass end isolation protective circuit 5 input ends, and bypass end isolation protective circuit 5 output terminals are connected with the output terminal of PLC end isolation protective circuit 2.
PLC end input interface J1 is the connecting interface of pcb board card and PLC digital output module 1; PLC end isolation protective circuit 2 is protected the PLC module for the electrical isolation that realizes 1 of field level controlled device 3 and PLC digital output module, and short-circuit protection prevents that inverse current from causing burning of PLC module and power supply short circuit; Bypass end isolation protective circuit 5 is used for realizing power supply and the field level controlled device 3 power supplys realization electrical isolation of the emergent control 4 of bypass, and short-circuit protection prevents that inverse current from causing power supply short circuit; Two isolation protective circuits are to also having played the effect of electrical isolation between two kinds of mode of operations; External signal output interface J2 and J3 are the connecting interfaces of pcb board card and field level controlled device 3, and external signal input interface J4 is the connecting interface of realizing the emergent control 4 of bypass and pcb board card.
The description of the following text of the utility model is that the embodiment according to 16 passages arranges, and in actual the use, then can realize more multichannel collection by corresponding expansion.Wherein PLC end input interface J1, external unit output interface J2 and J3, external unit input interface J4 all select pcb board standard line bank.
The SM322 device of PLC digital output module 1 selection standard 24VDC input, or select other PLC digital output module of Siemens's series.Controlled device 3 is comprised of associated solenoid valve, DC contactor and signal lamp.The emergent control 4 of bypass is comprised of relevant gauge tap, button.
PLC end isolation protective circuit 2 and bypass end isolation protective circuit 5 form by relay R EL-MR-24DC/21, the IN4007 of respective number, and concrete structure is following to be described in detail.
With reference to Fig. 2, be provided with relay R LY1, RLY2 in the PLC end isolation protective circuit 2 ... RLY16 and corresponding diode D1, D2 thereof ... D16, each winding line mode and principle are consistent, and the below is illustrated as an example of RLY1, D1 and RLY2, D2 example respectively:
RLY1 selects is relay with a Lu Changkai, the two ends of diode D1 are corresponding with the two ends of relay R LY1 to link to each other, the coil-end of the relay that links to each other with diode D1 negative terminal is connected to No. 17 ends (J1-17) of PLC end input interface J1, the coil-end of the relay that links to each other with diode D1 anode and other 15 relay R LY2, RLY3 ... the corresponding end of the coil of RLY16 connects successively to No. 1 0VDC power end (J1-1) of PLC end input interface J1, the switch-side moving contact of relay R LY1 is connected to No. 1 end (J2-1) of external signal output interface J2, the switch-side other end of relay R LY1 and other 15 relay R LY2, RLY3 ... the switch-side corresponding end of RLY16 connects successively to No. 17 24VDC ends (J2-17) of external signal output interface J2.
RLY2 selects equally also is relay with a Lu Changkai, the two ends of diode D2 are corresponding with the two ends of relay R LY2 to link to each other, the coil-end of the relay that links to each other with diode D2 negative terminal is connected to No. 16 ends (J1-16) of PLC end input interface J1, the coil-end of the relay that links to each other with diode D2 anode with other 15 relay R LY1, RLY3 ... the corresponding end of the coil of RLY16 connects successively to No. 1 0VDC power end (J1-1) of PLC end input interface J1, the switch-side moving contact of relay R LY2 is connected to No. 2 of external signal output interface J2 ends (J2-2), the switch-side other end of relay R LY2 with other 15 relay R LY1, RLY3 ... the switch-side corresponding end of RLY16 connects successively to No. 17 24VDC ends (J2-17) of external signal output interface J2.
RLY3, RLY4 ... RLY16 respectively with D3, D4 ... the D16 wiring, consistent with RLY1 and D1, RLY2 and D2 connected mode thereof, the rest may be inferred.
With reference to Fig. 3, be provided with relay R LY17, RLY18 in the bypass end isolation protective circuit 5 ... RLY32 and corresponding diode D17, D18 thereof ... D32, each winding line mode and principle are consistent, and the below is illustrated as an example of RLY17, D17 and RLY18, D18 example:
RLY17 selects also is relay with a Lu Changkai, the two ends of diode D17 are corresponding with the two ends of relay R LY17 to link to each other, the coil-end of the relay that links to each other with diode D17 negative terminal is connected to No. 18 ends (J4-18) of external signal input interface J4, the coil-end of the relay that links to each other with diode D17 anode and other 15 relay R LY18, RLY19 ... the corresponding end of the coil of RLY32 connects successively to No. 2 industrial power 0VDC ends (J4-2) of external signal input interface J4, the switch-side moving contact of relay R LY17 is connected to No. 1 end (J2-1) of external signal output interface J2, the switch-side other end of relay R LY17 and other 15 relay R LY18, RLY19 ... the switch-side corresponding end of RLY32 connects successively to No. 1 industrial power 24VDC end (J4-1) of external signal input interface J4.
RLY18 selects equally also is relay with a Lu Changkai, the two ends of diode D18 are corresponding with the two ends of relay R LY18 to link to each other, the coil-end of the relay that links to each other with diode D18 negative terminal is connected to No. 17 ends (J4-17) of external signal input interface J4, the coil-end of the relay that links to each other with diode D18 anode and other 15 relay R LY17, RLY19 ... the corresponding end of the coil of RLY32 connects successively to No. 2 industrial power 0VDC ends (J4-2) of external signal input interface J4, the switch-side moving contact of relay R LY18 is connected to No. 2 ends (J2-2) of external signal output interface J2, the switch-side other end of relay R LY18 and other 15 relay R LY17, RLY19 ... the switch-side corresponding end of RLY32 connects successively to No. 1 industrial power 24VDC end (J4-1) of external signal input interface J4.
RLY19, RLY20 ... RLY32 respectively with D19, D20 ... the corresponding wiring of D32, consistent with RLY17 and D17, RLY18 and D18 connected mode thereof, the rest may be inferred.
With reference to Fig. 4, the negative pole (0VDC) of one termination PLC power supply of No. 1 end of PLC end input interface J1, RLY1, RLY2 that another termination links to each other with diode D16 anode ... the coil-end of RLY16 relay (J1-1), all the other are 17,16 years old ... No. 2 the end connected mode is consistent, and the below is illustrated as an example of 17, No. 16 terminated lines example:
The 1 tunnel output (DO1) of one termination PLC digital output module 1 of No. 17 ends, the coil-end (J1-17) of the RLY1 relay that another termination links to each other with diode D1 negative terminal; The 2 tunnel output (DO2) of one termination PLC digital output module 1 of No. 16 ends, the coil-end (J1-16) of the RLY2 relay that another termination links to each other with diode D2 negative terminal; The rest may be inferred.
One of No. 17 ends of external unit output interface J2 are connected to the normal position end of system model change-over switch, another relay termination RLY1, RLY2 ... the switch-side corresponding end of RLY16 is interconnect (J2-17) successively, all the other are 1,2 years old ... No. 16 the end connected mode is consistent, and the below is illustrated as an example of 1, No. 2 terminated line example:
The positive pole (OUTPUT1+) of one termination field level the 1 road controlled device 3 of No. 1 end, the switch-side moving contact end (J2-1) of another relay termination RLY1; The positive pole (OUTPUT2+) of one termination the 2 road controlled device 3 of No. 2 ends, the switch-side moving contact end (J2-2) of another relay termination RLY2; The rest may be inferred.
No. 17 of external unit output interface J3 are connected to the power cathode (0VDC) of industrial power, the negative pole (OUTPUT1-) of No. 1 termination the 1 road controlled device 3, the negative pole (OUTPUT2-) of No. 2 termination the 2 road controlled devices 3, the rest may be inferred, 1,2 of external unit output interface J3 ... 17 other ends interconnect successively.
The 24VDC output terminal (industrial power 24VDC) of one termination 24VDC industrial power of No. 1 end of external unit input interface J4, another relay termination RLY1, RLY2 ... the switch-side corresponding end of RLY16 is interconnect (J4-1) successively; The 0VDC output terminal (industrial power 0VDC) of one termination 24VDC industrial power of No. 2 ends, the coil-end (J4-2) of the RLY17 relay that another termination links to each other with diode D17 negative terminal; All the other are 18,17 years old ... No. 3 the end connected mode is consistent, and the below is illustrated as an example of 18, No. 17 terminated lines example:
The road output terminal (SIGNAL1) of the emergent control of one termination bypass of No. 18 ends 4 gauge tap (or button) S1, another termination connects the coil-end (J4-18) of the RLY17 relay that links to each other with diode D17 negative terminal; Another road output terminal (SIGNAL2) of the emergent control of one termination bypass of No. 17 ends 4 gauge tap (or button) S1, another termination connects the coil-end (J4-17) of the RLY18 relay that links to each other with diode D18 negative terminal; The rest may be inferred.
With reference to Fig. 5, three system model change-over switch principle of work schematic diagram, three system model change-over switch input ends are connected with the 24V power supply, receive electric signal, the system model change-over switch output terminal first via is normal position, be connected to No. 17 terminals of external signal output interface J2, the 0V of power supply is connected to No. 17 terminals of external signal output interface J3; The middle road of three system model change-over switch output terminals is position of rests; The Third Road of system model change-over switch output terminal is emergent position, be connected to emergent gauge tap S1, S2 ... the input end of S8, emergent gauge tap S1 one tunnel is connected to No. 18 terminals of external signal input interface J4, and another road is connected to No. 17 terminals of external signal input interface J4; Emergent gauge tap S2 one tunnel is connected to No. 16 terminals of external signal input interface J4, and another road is connected to No. 15 terminals of external signal input interface J4; S3, S4 ... S8 wiring and S1, S2 connected mode are consistent, the like.
During the PLC normal mode of operation; three system model change-over switches are in normal position; see for details shown in Figure 5; PLC work, PLC digital output module 1 output access PLC end input interface J1 is by PLC end isolation protective circuit 2; switching signal is delivered to external signal output interface J2 and J3; realization is to the control of the controlled devices 3 such as field level solenoid valve, and bypass this moment end isolation protective circuit 5 is not powered, and is in isolation.
Bypass control model when maintenance (PLC fault or) of meeting an urgent need; three system model change-over switches are in emergent position; see for details shown in Figure 5; PLC does not work; the gauge tap (or button) of the emergent control 4 of bypass is delivered to external signal output interface J2 and J3 to signal by external signal input interface input J4 through bypass end isolation protective circuit 5, realizes the emergent control to controlled device 3; this moment, PLC end isolation protective circuit 2 was not powered, and was in isolation.
The utility model drives interface card based on the digital signal of the isolation of PLC band and bypass, based on the PLC control system that extensively adopts at present, when having solved a large amount of digital quantity of output, wiring is complicated, take up room large, the inefficient problem of Installation and Debugging possesses the emergent two kinds of mode of operations of control model of PLC normal mode of operation and bypass, realizes the switching of two kinds of patterns by the system model change-over switch; The application relay has been realized the electrical isolation between digital signal and the PLC module, protection PLC module, simultaneously can realize isolation to another mode of operation during a kind of work pattern, burn module or cause power supply short circuit when utilizing IN4007 effectively to prevent inverse current; Reduce installing space by the PCB board structure of circuit that is made as standard, and saved the complicated wiring work of intermediate link in the conventional procedure, only need to finish pcb board and can realize communication with reality level and the wiring of PLC module end, greatly improved work efficiency.
Claims (4)
1. the digital signal based on the isolation of PLC band and bypass drives interface card; it is characterized in that: comprise PLC end input interface J1, PLC end isolation protective circuit (2), bypass end isolation protective circuit (5), external signal output interface J2 and J3, external signal input interface J4; be connected to each other common composition pcb board card
PLC end isolation protective circuit (2) input end wherein is connected with PLC digital output module (1) by PLC end input interface J1, and PLC end isolation protective circuit (2) is connected with the controlled device (3) of field level with J3 by external signal output interface J2 simultaneously; In addition, external signal input interface J4 is connected with the emergent control of bypass (4), external signal input interface J4 is connected with bypass end isolation protective circuit (5) input end, and bypass end isolation protective circuit (5) output terminal is connected with the output terminal of PLC end isolation protective circuit (2);
The negative pole of one termination PLC power supply of No. 1 end of described PLC end input interface J1, RLY1, RLY2 that another termination links to each other with diode D16 anode ... the coil-end of RLY16 relay, all the other are 17,16 years old ... No. 2 the terminated line mode is consistent, the 1 tunnel output of one termination PLC digital output module (1) of No. 17 ends, the coil-end of the RLY1 relay that another termination links to each other with diode D1 negative terminal; The 2 tunnel output of one termination PLC digital output module (1) of No. 16 ends, the coil-end of the RLY2 relay that another termination links to each other with diode D2 negative terminal;
The positive source of one termination controlled device (3) of No. 17 ends of external signal output interface J2, another relay termination RLY1, RLY2 ... the switch-side corresponding end of RLY16 is interconnect successively, all the other are 1,2 years old ... No. 16 the terminated line mode is consistent, the positive pole of one termination field level the 1 road controlled device (3) of No. 1 end, the switch-side moving contact end of another relay termination RLY1; The positive pole of one termination the 2 road controlled device (3) of No. 2 ends, the switch-side moving contact end of another relay termination RLY2; The rest may be inferred,
The power cathode of No. 17 termination controlled devices (3) of external signal output interface J3, the negative pole of No. 1 termination the 1 road controlled device (3), the negative pole of No. 2 termination the 2 road controlled devices (3), the rest may be inferred, 1,2 of external signal output interface J3 ... 17 other ends interconnect successively
The 24VDC output terminal of one termination 24VDC industrial power of No. 1 end of external signal input interface J4, another relay termination RLY1, RLY2 ... the switch-side corresponding end of RLY16 is interconnect successively; The 0VDC output terminal of one termination 24VDC industrial power of No. 2 ends, the coil-end of the RLY17 relay that another termination links to each other with diode D17 negative terminal; All the other are 18,17 years old ... No. 3 the terminated line mode is consistent, the output terminal of the emergent control in a termination 1 roadside road of No. 18 ends (4), and another termination connects the coil-end of the RLY17 relay that links to each other with diode D17 negative terminal; The output terminal of the emergent control in one termination, the 2 roadside road of No. 17 ends (4), another termination connects the coil-end of the RLY18 relay that links to each other with diode D18 negative terminal; The rest may be inferred.
2. the digital signal based on the isolation of PLC band and bypass according to claim 1 drives interface card; it is characterized in that: be provided with relay R LY1, RLY2 in the described PLC end isolation protective circuit (2) ... RLY16 and corresponding diode D1, D2 thereof ... D16; each winding line mode is consistent
RLY1 selects is relay with a Lu Changkai, the two ends of diode D1 are corresponding with the two ends of relay R LY1 to link to each other, the coil-end of the relay that links to each other with diode D1 negative terminal is connected to No. 17 ends of PLC end input interface J1, the coil-end of the relay that links to each other with diode D1 anode and other 15 relay R LY2, RLY3 ... the corresponding end of the coil of RLY16 connects successively to No. 1 0VDC power end of PLC end input interface J1, the switch-side moving contact of relay R LY1 is connected to No. 1 end of external signal output interface J2, the switch-side other end of relay R LY1 and other 15 relay R LY2, RLY3 ... the switch-side corresponding end of RLY16 connects successively to No. 17 24VDC ends of external signal output interface J2
RLY2 selects equally also is relay with a Lu Changkai, the two ends of diode D2 are corresponding with the two ends of relay R LY2 to link to each other, the coil-end of the relay that links to each other with diode D2 negative terminal is connected to No. 16 ends of PLC end input interface J1, the coil-end of the relay that links to each other with diode D2 anode with other 15 relay R LY1, RLY3 ... the corresponding end of the coil of RLY16 connects successively to No. 1 0VDC power end of PLC end input interface J1, the switch-side moving contact of relay R LY2 is connected to No. 2 ends of external signal output interface J2, the switch-side other end of relay R LY2 with other 15 relay R LY1, RLY3 ... the switch-side corresponding end of RLY16 connects successively to No. 17 24VDC ends of external signal output interface J2
RLY3, RLY4 ... RLY16 respectively with D3, D4 ... the D16 wiring, consistent with RLY1 and D1, RLY2 and D2 connected mode thereof, the rest may be inferred.
3. the digital signal based on the isolation of PLC band and bypass according to claim 1 drives interface card; it is characterized in that: be provided with relay R LY17, RLY18 in the described bypass end isolation protective circuit (5) ... RLY32 and corresponding diode D17, D18 thereof ... D32; each winding line mode is consistent
RLY17 selects also is relay with a Lu Changkai, the two ends of diode D17 are corresponding with the two ends of relay R LY17 to link to each other, the coil-end of the relay that links to each other with diode D17 negative terminal is connected to No. 18 ends of external signal input interface J4, the coil-end of the relay that links to each other with diode D17 anode and other 15 relay R LY18, RLY19 ... the corresponding end of the coil of RLY32 connects successively to No. 2 industrial power 0VDC ends of external signal input interface J4, the switch-side moving contact of relay R LY17 is connected to No. 1 end of external signal output interface J2, the switch-side other end of relay R LY17 and other 15 relay R LY18, RLY19 ... the switch-side corresponding end of RLY32 connects successively to No. 1 industrial power 24VDC end of external signal input interface J4
RLY18 selects equally also is relay with a Lu Changkai, the two ends of diode D18 are corresponding with the two ends of relay R LY18 to link to each other, the coil-end of the relay that links to each other with diode D18 negative terminal is connected to No. 17 ends of external signal input interface J4, the coil-end of the relay that links to each other with diode D18 anode and other 15 relay R LY17, RLY19 ... the corresponding end of the coil of RLY32 connects successively to No. 2 industrial power 0VDC ends of external signal input interface J4, the switch-side moving contact of relay R LY18 is connected to No. 2 ends of external signal output interface J2, the switch-side other end of relay R LY18 and other 15 relay R LY17, RLY19 ... the switch-side corresponding end of RLY32 connects successively to No. 1 industrial power 24VDC end of external signal input interface J4
RLY19, RLY20 ... RLY32 respectively with D19, D20 ... the corresponding wiring of D32, consistent with RLY17 and D17, RLY18 and D18 connected mode thereof, the rest may be inferred.
4. the digital signal based on the isolation of PLC band and bypass according to claim 1 drives interface card, and it is characterized in that: also comprise three system model change-over switches, three system model change-over switch input ends are connected with the 24V power supply,
The system model change-over switch output terminal first via is normal position, is connected to No. 17 terminals of external signal output interface J2, and the 0V of power supply is connected to No. 17 terminals of external signal output interface J3;
The middle road of three system model change-over switch output terminals is position of rests;
The Third Road of system model change-over switch output terminal is emergent position, be connected to emergent gauge tap S1, S2 ... the input end of S8, emergent gauge tap S1 one tunnel is connected to No. 18 terminals of external signal input interface J4, and another road is connected to No. 17 terminals of external signal input interface J4; Emergent gauge tap S2 one tunnel is connected to No. 16 terminals of external signal input interface J4, and another road is connected to No. 15 terminals of external signal input interface J4;
S3, S4 ... S8 wiring and S1, S2 connected mode are consistent, the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329571 CN202720483U (en) | 2012-07-09 | 2012-07-09 | Digital signal driving interface card with isolation function and bypass based on programmable logic controller (PLC) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329571 CN202720483U (en) | 2012-07-09 | 2012-07-09 | Digital signal driving interface card with isolation function and bypass based on programmable logic controller (PLC) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202720483U true CN202720483U (en) | 2013-02-06 |
Family
ID=47622301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220329571 Expired - Fee Related CN202720483U (en) | 2012-07-09 | 2012-07-09 | Digital signal driving interface card with isolation function and bypass based on programmable logic controller (PLC) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202720483U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768505A (en) * | 2012-07-09 | 2012-11-07 | 宝鸡石油机械有限责任公司 | Digital signal driving interface card with isolation function and bypass based on programmable logic controller (PLC) |
| CN106413255A (en) * | 2016-03-30 | 2017-02-15 | 苏州华兴源创电子科技有限公司 | Circuit board for PLC distribution |
-
2012
- 2012-07-09 CN CN 201220329571 patent/CN202720483U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768505A (en) * | 2012-07-09 | 2012-11-07 | 宝鸡石油机械有限责任公司 | Digital signal driving interface card with isolation function and bypass based on programmable logic controller (PLC) |
| CN106413255A (en) * | 2016-03-30 | 2017-02-15 | 苏州华兴源创电子科技有限公司 | Circuit board for PLC distribution |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102768505B (en) | Digital signal driving interface card with isolation function and bypass based on programmable logic controller (PLC) | |
| CN202189255U (en) | Input type relay module | |
| CN103219749A (en) | Grid-connected photovoltaic power generation system capable of dynamically switching invert units and switching method thereof | |
| CN202720483U (en) | Digital signal driving interface card with isolation function and bypass based on programmable logic controller (PLC) | |
| CN102854836B (en) | Analog signal driver interface card on basis of PLC (programmable logic controller) with bypass | |
| CN208638279U (en) | A kind of economic and reliable switching generator output device | |
| CN201341038Y (en) | Multifunctional two-power-supply switching device | |
| CN102854835B (en) | PLC (Programmable Logic controller)-based digital signal collection board card with isolation function | |
| CN205028056U (en) | Looped netowrk cabinet power consumption behaviour structure | |
| CN201688009U (en) | Electromagnetic valve controller | |
| CN109450077A (en) | A kind of compatible dual path isolation power switcher of alternating current-direct current | |
| CN109143838B (en) | Special dual-redundancy switching circuit for underwater | |
| CN204408027U (en) | A kind of Intelligent power distribution system | |
| CN2692916Y (en) | Full-digital CD motor speed-regulating control cabinet | |
| CN209469849U (en) | 8 way solenoid valve driving devices | |
| CN115002979A (en) | Station house lamp base with controllable codes | |
| CN101827504B (en) | PLC (Programmable logic Controller) open relay inserting case | |
| CN201698201U (en) | Contactless program control device of railway internal combustion electric drive locomotive | |
| CN214252945U (en) | Control structure for improving operation efficiency of electric valve | |
| CN217935093U (en) | Digital power supply circulating switching power stabilizing device | |
| CN209374352U (en) | High-speed relay coupling terminal block | |
| CN221841342U (en) | Quick connecting device for PLC output signal | |
| CN203759174U (en) | High-voltage switch cabinet fault comprehensive alarm device | |
| CN219201763U (en) | Ammeter phase conversion circuit | |
| CN219591936U (en) | Construction distribution box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20150709 |
|
| EXPY | Termination of patent right or utility model |