CN102436218B - Output circuit and output device - Google Patents
Output circuit and output device Download PDFInfo
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- CN102436218B CN102436218B CN201110295689.1A CN201110295689A CN102436218B CN 102436218 B CN102436218 B CN 102436218B CN 201110295689 A CN201110295689 A CN 201110295689A CN 102436218 B CN102436218 B CN 102436218B
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Abstract
The invention relates to an output circuit and an output device capable of outputting source type signals or fluxleakage type signals to external equipment. The output device comprises the above output circuit. A second switch element is switched on when the source type output is selected through a DIP switch. A first switch element is switched on when the fluxleakage type output is selected through the DIP switch. When the source type output is selected and the external power supply is mistakenly connected with a second output terminal, the large current flows through the second switch element and the fuse is cut off. The output circuit comprises the output device of the above output circuit.
Description
Technical field
The present invention relates to a kind of output circuit to external unit output noble potential (source type) signal or electronegative potential (leakage type) signal and the output unit with this output circuit.
Background technology
The numerical control device of general lathe possesses output circuit and input circuit.Output circuit is to the external unit output signal that can be connected with lathe.From external unit to input circuit input signal.Externally the input/output signal of equipment is in the situation of source type signal, uses the imput output circuit corresponding with source type in numerical control device.Externally the input/output signal of equipment is in the situation of leakage type signal, uses the imput output circuit corresponding with leakage type in numerical control device.Operator changes the imput output circuit of numerical control device so that the type matching of the type of the imput output circuit of numerical control device and the input/output signal of external unit.
In No. 3700315th, Japan special permission communique, the numerical control device that can change imput output circuit portion is disclosed.Numerical control device possesses fixing base and handling substrate.Handling substrate can be installed on fixing base and unload from fixing base.Fixing base possesses control part.Handling substrate possesses the imput output circuit portion of terminal base, leakage type or source type.
The control part of above-mentioned fixing base shares in the imput output circuit portion of leakage type and source type.Numerical control device is changed the handling substrate that possesses leakage type imput output circuit portion and the handling substrate that possesses source type imput output circuit portion, comes corresponding with the input/output signal of external unit.
Operator need to prepare two kinds of handling substrates in advance.In this case, the manufacturing expense of numerical control device increases.In the situation that handling substrate being switched to leakage to type or source type, need to change operation.To the switching of leakage type or source type and be not easy.
For fear of the replacing of substrate, can utilize the on/off of on-off element that lead-out terminal is switched to leakage type or source type.In the situation that external unit is connected to output circuit, operator is connected external unit with the lead-out terminal corresponding with this external unit.In the situation that operator has been unfamiliar with the corresponding relation of the lead-out terminal that connected operation or operator's wrong identification and external unit, operator is connected to external power source leakage type output terminal of the ground connection by on-off element.
Connecting under the state of on-off element, operator, external power source is being connected to the Lou type output terminal period of the day from 11 p.m. to 1 a.m, large electric current flows through on-off element.In the situation that flow through the electric current that surpasses the capacity of on-off element, on-off element is by breakage.
The object of the present invention is to provide a kind of output circuit and the output unit that possesses this output circuit, in the situation that lead-out terminal being switched to leakage to type or source type, do not change substrate, in the situation that power supply is connected to lead-out terminal mistakenly, can prevent the breakage of on-off element.
Summary of the invention
First invention of this case relates to a kind of output circuit, the second lead-out terminal output signal from the first lead-out terminal or the leakage type of source type, this output circuit is characterised in that to possess: selection portion, and it selects above-mentioned the first lead-out terminal or above-mentioned the second lead-out terminal; The first on-off element, it is connected between above-mentioned the first lead-out terminal and power supply unit; And second switch element and fuse, this second switch element and fuse are connected in series between above-mentioned the second lead-out terminal and grounding parts, wherein, in the situation that having selected above-mentioned the first lead-out terminal by above-mentioned selection portion, make above-mentioned second switch element switches, in the situation that having selected above-mentioned the second lead-out terminal, above-mentioned the first on-off element is connected.
The output circuit of the first invention, in the situation that utilizing selection portion to select the first lead-out terminal, makes second switch element switches, utilizes the on/off of the first on-off element to make the output on/off to external unit.In the situation that external power source is connected to the second lead-out terminal mistakenly, large electric current flows through second switch element, and fuse cuts off immediately.Therefore, can prevent the breakage of second switch element.In the situation that utilizing selection portion to select the second lead-out terminal, output circuit is connected the first on-off element, utilizes the on/off of second switch element to make the output on/off to external unit.In the situation that lead-out terminal being switched to leakage to type or source type, do not need to change substrate.
Second invention of this case is in the first invention, between power supply unit and grounding parts, be connected in series with the first bleeder circuit and the 3rd on-off element, the 3rd on-off element was controlled this first bleeder circuit and being connected of grounding parts, between power supply unit and grounding parts, be connected in series with the second bleeder circuit and the 4th on-off element, the 4th on-off element was controlled this second bleeder circuit and being connected of power supply unit, according to the output of above-mentioned the first bleeder circuit producing under the control at above-mentioned the 3rd on-off element, above-mentioned the first on-off element is connected, according to the output of above-mentioned the second bleeder circuit producing under the control at above-mentioned the 4th on-off element, make above-mentioned second switch element switches.
The output circuit of the second invention is by the control of the 3rd on-off element, control the output of the first bleeder circuit, control the on/off of the first on-off element, by the control of the 4th on-off element, control the output of the second bleeder circuit, control the on/off of second switch element.The operation voltage of general the first on-off element and second switch element is also lower than the operation voltage of external unit.According to the voltage signal from numerical control device, output circuit is controlled the action of the 3rd on-off element and the 4th on-off element.The 3rd on-off element, the 4th on-off element carry out on/off control to the first on-off element and second switch element.In the situation that the 3rd on-off element, the 4th on-off element are connected control to the first on-off element, second switch element respectively, the first bleeder circuit, the second bleeder circuit carry out step-down to avoid surpassing the operation voltage of the first on-off element, second switch element to the voltage of power supply unit respectively.Therefore, not damaged the first on-off element of output circuit, second switch element ground are to external unit output voltage signal.
The 3rd invention of this case is in the first or second invention, also possesses control device, this control device has for inputting from the port of the signal of above-mentioned the second lead-out terminal output and controlling the action of above-mentioned the first on-off element and above-mentioned second switch element, and above-mentioned control device detects the cut-out of above-mentioned fuse according to the signal from above-mentioned port input.
The output circuit of the 3rd invention is selected the first lead-out terminal by selection portion, operator is connected to the second lead-out terminal mistakenly by external power source in the situation that, and fuse cuts off.Before fuse cuts off, the second lead-out terminal ground connection, therefore low level " L " signal is input to control device.After fuse cuts off, remove the ground connection of the second lead-out terminal, so " H " signal of high level is input to control device.By the cut-out of fuse, from the input signal of the second lead-out terminal, from " L ", be changed to " H ", so control device detects in second switch element and has flow through excess current.
The 4th invention of this case is in the first or second invention, can change above-mentioned fuse.
The fuse that the output circuit of the 4th invention cuts off by replacing recovers output circuit rapidly.
The 5th invention of this case is that above-mentioned the first on-off element and above-mentioned second switch element are FET in the first or second invention.
The output circuit of the 5th invention uses FET as the first on-off element and second switch element, realizes reliably to the switching of the lead-out terminal of leakage type or source type.
The 6th invention of this case relates to a kind of output unit, it is characterized in that, possesses one according to described output circuit and other output circuit of any one invention in the first to the 5th invention, and wherein, other output circuit possesses: the 3rd lead-out terminal of source type; The 4th lead-out terminal of leakage type; Selecting arrangement, it selects the 3rd lead-out terminal or the 4th lead-out terminal; The 5th on-off element, it is connected between above-mentioned the 3rd lead-out terminal and power supply unit; And the 6th on-off element, it is connected between above-mentioned the 4th lead-out terminal and above-mentioned fuse, in the situation that having selected above-mentioned the 3rd lead-out terminal by above-mentioned selecting arrangement, above-mentioned the 5th on-off element is connected, in the situation that having selected above-mentioned the 4th lead-out terminal, above-mentioned the 6th on-off element is connected.
The output unit of the 6th invention is in the situation that being used a plurality of output circuit, the 6th on-off element that connects other output circuit on the fuse of an output circuit, therefore compare with the situation that each output circuit is arranged to fuse, can cut down the quantity of fuse.The in the situation that of having flow through excess current in second switch element or the 6th on-off element, fuse cuts off, and by a fuse, protects second switch element and the 6th on-off element.
Accompanying drawing explanation
Fig. 1 means the circuit diagram of the output circuit of embodiment 1.
Fig. 2 means the figure of the state of the DIP switch in each pattern.
Fig. 3 is the circuit diagram while external power source being connected to the second lead-out terminal mistakenly in source type output associative mode.
Fig. 4 means the circuit diagram of the output unit of embodiment 2.
Embodiment
(embodiment 1)
Fig. 1 means the circuit diagram of the output circuit of embodiment 1.Output circuit 1 is located in the numerical control device of lathe, is arranged on not shown substrate.Output circuit 1 possesses: control device 10, the first lead-out terminal 21, the second lead-out terminal 22, terminal base 80 and DIP (Dual In-line Package: dual-in-line package) switch 81 (selection portion).External unit is connected with the second lead-out terminal 22 with the first lead-out terminal 21.External unit moves with the signal of 24V system.In figure, DIP switch is expressed as to DIPSW.
Field programmable gate array), ASIC (Application Specific Integrated Circuit: special IC) or microcomputer control device 10 for example possesses FPGA (Field Programmable GateArrey:.Control device 10 possesses two output port 10a, 10b and an input port 10c.Control device 10 is controlled FET described later (Field Effect Transistor: driving field effect transistor) according to the selection of DIP switch 81.Control device 10 moves with 3.3V.
The MOSFET 31 of p-type (the first on-off element is called FET 31 below) is connected between the first lead-out terminal 21 and 24V power supply (power supply unit) 91.The source electrode of FET 31 is connected on power supply 91.The drain electrode of FET 31 is connected on the first lead-out terminal 21.
Resistance 41 is connected between the grid and power supply 91 of FET 31.The grid of FET 31 is connected to via resistance 42 on the collector of transistor 51 (the 3rd on-off element) of NPN type.The grounded emitter of transistor 51.The base stage of transistor 51 is connected on the output port 10a of control device 10 via resistance 52.The base stage of transistor 51 is connected via resistance 53 with emitter.Resistance 41 and resistance 42 form the first bleeder circuit.The grid operation voltage of FET 31 is 15V, also lower than the operation voltage of external unit (24V).Setting the first bleeder circuit makes the voltage that offers grid become grid operation voltage.
The MOSFET 32 of N-shaped (second switch element, hereinafter referred to as FET 32) and fuse 35 are connected in series between the second lead-out terminal 22 and ground connection side line (grounding parts).The drain electrode of FET32 is connected on the second lead-out terminal 22.The source electrode of FET 32 is via fuse 35 ground connection.The source electrode of FET 32 is connected on the input port 10c of control device 10 via change-over circuit 82.82 pairs of voltages of change-over circuit are changed.Change-over circuit 82 is converted to input signal (for example signal of 24V) signal of the 3.3V corresponding with control device 10.
The grid of FET 32 is connected on an end of fuse 35 via resistance 43.The other end ground connection of fuse 35.Fuse 35 is to compare fully little failure of current with rated current.Rated current is the electric current that becomes the benchmark that prevents FET 32 breakages.Fuse 35 can be changed.The grid of FET 32 is connected on the collector of transistor 61 (the 4th on-off element) via resistance 44.The emitter of transistor 61 is connected on the power supply 92 of 24V.The base stage of transistor 61 is connected via resistance 63 with emitter.Resistance 43 and resistance 44 form the second bleeder circuit.The grid operation voltage of FET 32 is 15V, also lower than the operation voltage of external unit (24V).Setting the second bleeder circuit makes the voltage that offers grid become grid operation voltage.
The base stage of transistor 61 is connected on the collector of transistor 71 via resistance 62.The grounded emitter of transistor 71.The base stage of transistor 71 is connected on the output port 10b of control device 10 via resistance 72.The base stage of transistor 71 is connected via resistance 73 with emitter.
Terminal base 80 possesses a plurality of ports.The first lead-out terminal 21 and the second lead-out terminal 22 are positioned at each port.Also can between the first lead-out terminal 21 and the second lead-out terminal 22, connect diode.Electric current is from the second lead-out terminal 22 to the first lead-out terminal 21 by diode, and diode absorbs excess current.
DIP switch 81 is selected source type output associative mode or leakage type output associative mode.Source type output associative mode refers to can export from the first lead-out terminal 21 to external unit the state of " H " signal of noble potential.Leakage type output associative mode refers to can export from the second lead-out terminal 22 to external unit the state of " L " signal of electronegative potential.As shown in the A of Fig. 2, in the situation that operator is made as connection by DIP switch 81, output circuit 1 becomes source type output associative mode.In the situation that DIP switch 81 is made as to disconnection, output circuit 1 becomes leakage type output associative mode.
The in the situation that of source type output associative mode, control device 10 is exported " H " signal from output port 10b all the time to resistance 72." H " signal is input to the base stage of transistor 71 via resistance 72, make base stage conducting.The voltage signal of output port 10b output 3.3V.
Resistance 62 ground connection due to transistor 71 conductings.The base stage of transistor 61 via resistance 62 by drop-down be 0V, transistor 61 conductings.Due to transistor 61 conductings, with the voltage of resistance 44 and 43 pairs of power supplys 92 of resistance, carry out dividing potential drop." H " signal is input to the grid of FET 32.The second lead-out terminal 22 ground connection.From the second lead-out terminal 22 " L " signal (signal of 0V) of output low level all the time.The second lead-out terminal 22 becomes provides the terminal of 0V (ground connection) (with reference to the B of Fig. 2)." L " signal is input to the input port 10c of control device 10 from the second lead-out terminal 22 via change-over circuit 82.
From output port 10a output " H " signal to resistance 52 in the situation that, " H " signal is input to the base stage of transistor 51 via resistance 52.Transistor 51 conductings.The voltage signal of output port 10a output 3.3V.
Resistance 42 ground connection due to transistor 51 conductings.The grid of FET 31 via resistance 42 by drop-down, FET 31 conductings.Due to FET 31 conductings, the first lead-out terminal 21 is connected with power supply 91." H " signal of 24V is from the first lead-out terminal 21 outputs.
From output port 10a output " L " signal to resistance 52 in the situation that, " L " signal is input to the base stage of transistor 51 via resistance 52.Transistor 51 cut-offs.The ground connection of resistance 42 is because the cut-off of transistor 51 is removed.The grid of FET 31 is above drawn into 24V (current potential of power supply 91) via resistance 41, makes FET 31 cut-offs.The first lead-out terminal 21 becomes high impedance status.Control device 10 makes the control of FET 31 conduction and cut-off.The first lead-out terminal 21 becomes source type output terminal of output " H " signal.
The in the situation that of leakage type output associative mode, control device 10 is exported " H " signal from output port 10a all the time to resistance 52.Control device 10 makes FET31 conducting from output port 10a, and the first lead-out terminal 21 is connected on power supply 91.From the first lead-out terminal 21, export all the time " H " signal, the first lead-out terminal 21 becomes provides the terminal of 24V (with reference to the B of Fig. 2).
Control device 10 makes FET 32 conductings from output port 10b, by the second lead-out terminal 22 ground connection, from second lead-out terminal 22 output " L " signals.Control device 10, from output port 10b to resistance 72 output " L " signals, makes transistor 71 cut-offs.
The ground connection of resistance 62 is because the cut-off of transistor 71 is removed.The base stage of transistor 61 via resistance 63 by draw, make transistor 61 cut-off.Remove the connection of power supply 92 and resistance 44, the grid of FET 32 via resistance 43 by drop-down be 0V.FET 32 cut-offs.The second lead-out terminal 22 becomes high impedance status.Control device 10 makes the control of FET 32 conduction and cut-off.The second lead-out terminal 22 becomes leakage type output terminal of output " L " signal.
In source type output associative mode, FET 32 is conductings.The second lead-out terminal 22 is via FET 32 and fuse 35 and ground connection." L " signal is input to input port 10c from the second lead-out terminal 22.As shown in Figure 3, in the situation that operator is connected to external power source 5 the second lead-out terminal 22 mistakenly, large electric current flows to FET 32 and fuse 35 (with reference to the white edge arrow of Fig. 3) from the second lead-out terminal 22.Fuse 35 is to compare fully little failure of current with the rated current of FET32.In the situation that than rated current also large electric current from the second lead-out terminal 22, flow through FET 32, fuse 35 cuts off immediately.FET 32 can be not damaged.
The current potential of the second lead-out terminal 22 rises because of the cut-out of fuse 35." H " signal is input to input port 10c via change-over circuit 82 from the second lead-out terminal 22.In the situation that having inputted " H " signal from the second lead-out terminal 22, control device 10 detects the cut-out (having flow through excess current in FET 32) of fuse 35.In the situation that the cut-out of fuse 35 detected, control device 10 drives the annunciators such as lamp or hummer, impels operator to change fuse 35.Change-over circuit 82 is 3.3V signal (voltage) by the voltage transitions of the external power source 5 from the second lead-out terminal 22 inputs.
In leakage type output associative mode, by the first lead-out terminal 21 ground connection in the situation that, in FET 31, flow super-high-current.Power supply 91 protection FET 31 avoid the impact of excess current.For example power supply 91 possesses IPD (Intelligent Power Device: smart power device).In the situation that flow through in FET 31 than rated current large electric current also, power supply 91 cuts off the electric current supply to FET 31 immediately.
In the situation that utilizing DIP switch 81 to select source type output associative mode, output circuit makes 32 conductings of second switch element, utilizes the control of the conduction and cut-off of the first on-off element 31 is controlled to the output to external unit.In the situation that external power source being connected to mistakenly to the second lead-out terminal 22, large electric current flows through second switch element 32, and fuse 35 cuts off immediately.Therefore, second switch element 32 can be not damaged.Output circuit 1 does not carry out substrate replacing just can switch to source type output associative mode or leakage type output associative mode.The output voltage of control device 10 is converted to the operation voltage of external unit.
Fuse 35 also can be fixed on substrate.In this case, the replacing of fuse 35 is undertaken by changing substrate.The operation voltage of control device 10 and external unit is not limited to 3.3V system or 24V system.As long as change rightly the operation voltage of control device 10 and external unit.Also DIP switch 81 be can replace and source type output associative mode or leakage type output associative mode selected with switches such as push-button switch, tumbler switches.Insulated gate bipolar transistor) in addition, also can replace take FET or transistor to use IGBT (Insulated Gate Bipolar transistor: other on-off element such as on-off element.
(embodiment 2)
The output unit 100 of Fig. 4 possesses output circuit 1 (output circuit) and output circuit 2 (other output circuit).Output circuit 2 possesses: control device 10, the 3rd lead-out terminal 23, the 4th lead-out terminal 24, terminal base 83, DIP switch 81 (selection portion or selecting arrangement).External unit is connected with the 4th lead-out terminal 24 with the 3rd lead-out terminal 23.External unit drives with the signal of 24V system.
Control device 10 possesses output port 10d, 10e, according to the selection of DIP switch 81, controls FET described later.
The 3rd lead-out terminal 23 is connected in the drain electrode of MOSFET 33 (the 5th on-off element, is called FET 33 below) of p-type.The source electrode of FET 33 is connected on the power supply 93 of 24V.The grid of FET 33 is connected on power supply 93 via resistance 141, is connected on the collector of transistor 151 of NPN type via resistance 142.Power supply 93 protection FET 33 avoid the impact of excess current.The grounded emitter of transistor 151.The base stage of transistor 151 is connected on the output port 10d of control device 10 via resistance 152.The base stage of transistor 151 is connected via resistance 153 with emitter.
The 4th lead-out terminal 24 is connected in the drain electrode of MOSFET 34 (the 6th on-off element, is called FET 34 below) of N-shaped.The source electrode of FET 34 is via fuse 35 ground connection of output circuit 1 and be connected on input port 10c via change-over circuit 82.The grid of FET 34 is connected on fuse 35 via resistance 143.The grid of FET 34 is connected to via resistance 144 on the collector of transistor 161 of positive-negative-positive.
The emitter of transistor 161 is connected on the power supply 94 of 24V.The base stage of transistor 161 is connected via resistance 163 with emitter.The base stage of transistor 161 is connected on the collector of NPN transistor 171 via resistance 162.The grounded emitter of transistor 171.The base stage of transistor 171 is connected on output port 10e via resistance 172.The base stage of transistor 171 is connected via resistance 173 with emitter.
Terminal base 83 possesses a plurality of ports.The 3rd lead-out terminal 23 and the 4th lead-out terminal 24 are positioned at each port.Also can between the 3rd lead-out terminal 23 and the 4th lead-out terminal 24, connect diode.Electric current is from the 4th lead-out terminal 24 to the 3rd lead-out terminal 23 by diode, and diode absorbs excess current.
DIP switch 81 is selected source type output associative mode or leakage type output associative mode.In the situation that having selected source type output associative mode, " H " signal of high level outputs to external unit via the 3rd lead-out terminal 23 from control device 10.In the situation that having selected leakage type output associative mode, low level " L " signal outputs to external unit via the 4th lead-out terminal 24 from control device 10.
The driving of the output circuit 2 of the selection based on DIP switch 81 is identical with embodiment 1, omits detailed explanation.
The in the situation that of external power source being connected to mistakenly utilizing DIP switch 81 to select source type output associative mode to the second lead-out terminal 22 or the 4th lead-out terminal 24, fuse 35 cuts off.Before fuse 35 cuts off, " L " signal is input to input port 10c from the second lead-out terminal 22 or the 4th lead-out terminal 24.After fuse 35 cuts off, " H " signal is input to input port 10c via change-over circuit 82 from the second lead-out terminal 22 or the 4th lead-out terminal 24.In the situation that having inputted " H " signal from the second lead-out terminal 22 or the 4th lead-out terminal 24, control device 10 detects the cut-out (having flow through excess current in FET 32 or FET 34) of fuse 35.
The source electrode of FET 34 is via fuse 35 ground connection of output circuit 1, so 100 of output units possess a fuse.The in the situation that of having flow through excess current in FET 32 or FET 34, fuse 35 cuts off.By a fuse 35, protect FET 32 and FET 34.Control device 10 monitors the signal of the second lead-out terminal 22 and the 4th lead-out terminal 24, detects whether flow through excess current in FET 32 or FET 34.
Output unit 100 also can possess a plurality of output circuits 2.In this case, the source electrode of the FET 34 of each output circuit 2 is via fuse 35 ground connection.
Claims (6)
1. an output circuit, from the second lead-out terminal output signal of the first lead-out terminal or the leakage type of source type, this output circuit is characterised in that to possess:
Selection portion, it selects above-mentioned the first lead-out terminal or above-mentioned the second lead-out terminal;
The first on-off element, it is connected between above-mentioned the first lead-out terminal and power supply unit; And
Second switch element and fuse, this second switch element and fuse are connected in series between above-mentioned the second lead-out terminal and grounding parts,
Wherein, in the situation that having selected above-mentioned the first lead-out terminal by above-mentioned selection portion, make above-mentioned second switch element switches, in the situation that having selected above-mentioned the second lead-out terminal, above-mentioned the first on-off element is connected.
2. output circuit according to claim 1, is characterized in that,
Between power supply unit and grounding parts, be connected in series with the first bleeder circuit and the 3rd on-off element, the 3rd on-off element was controlled this first bleeder circuit and being connected of grounding parts,
Between power supply unit and grounding parts, be connected in series with the second bleeder circuit and the 4th on-off element, the 4th on-off element was controlled this second bleeder circuit and being connected of power supply unit,
According to the output of above-mentioned the first bleeder circuit producing under the control at above-mentioned the 3rd on-off element, above-mentioned the first on-off element is connected, according to the output of above-mentioned the second bleeder circuit producing under the control at above-mentioned the 4th on-off element, made above-mentioned second switch element switches.
3. according to the output circuit described in claim 1 or 2, it is characterized in that,
Also possess control device, this control device has for inputting from the port of the signal of above-mentioned the second lead-out terminal output and controlling the action of above-mentioned the first on-off element and above-mentioned second switch element,
Above-mentioned control device detects the cut-out of above-mentioned fuse according to the signal from above-mentioned port input.
4. according to the output circuit described in claim 1 or 2, it is characterized in that,
Can change above-mentioned fuse.
5. according to the output circuit described in claim 1 or 2, it is characterized in that,
Above-mentioned the first on-off element and above-mentioned second switch element are FET.
6. an output unit, is characterized in that,
Possess one according to the output circuit described in any one in claim 1～5 and other output circuit,
Wherein, other output circuit possesses:
The 3rd lead-out terminal of source type;
The 4th lead-out terminal of leakage type;
Selecting arrangement, it selects the 3rd lead-out terminal or the 4th lead-out terminal;
The 5th on-off element, it is connected between above-mentioned the 3rd lead-out terminal and power supply unit; And
The 6th on-off element, it is connected between above-mentioned the 4th lead-out terminal and above-mentioned fuse,
In the situation that having selected above-mentioned the 3rd lead-out terminal by above-mentioned selecting arrangement, above-mentioned the 5th on-off element is connected, in the situation that having selected above-mentioned the 4th lead-out terminal, above-mentioned the 6th on-off element is connected.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010219760A JP5459168B2 (en) | 2010-09-29 | 2010-09-29 | Output circuit and output device |
| JP2010-219760 | 2010-09-29 |
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| CN102436218A CN102436218A (en) | 2012-05-02 |
| CN102436218B true CN102436218B (en) | 2014-08-13 |
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| WO2016121114A1 (en) * | 2015-01-30 | 2016-08-04 | 三菱電機株式会社 | Digital output circuit, printed wiring board, and industrial device |
| CN106896775B (en) * | 2015-12-21 | 2020-03-20 | 施耐德电气工业公司 | Output circuit for programmable logic controller |
| CN105467262A (en) * | 2015-12-23 | 2016-04-06 | 广州视睿电子科技有限公司 | Method and device for detection of connection error of display equipment terminal |
| JP7404646B2 (en) * | 2019-04-23 | 2023-12-26 | ブラザー工業株式会社 | Input/output board and machine tools |
| JP7310591B2 (en) * | 2019-12-19 | 2023-07-19 | 株式会社オートネットワーク技術研究所 | drive |
| CN112596462B (en) * | 2020-12-22 | 2022-04-22 | 深圳市英威腾电气股份有限公司 | Output method, device and system based on signal type |
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2010
- 2010-09-29 JP JP2010219760A patent/JP5459168B2/en active Active
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2011
- 2011-09-28 CN CN201110295689.1A patent/CN102436218B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004248093A (en) * | 2003-02-14 | 2004-09-02 | Auto Network Gijutsu Kenkyusho:Kk | Load drive circuit |
| CN101141125A (en) * | 2006-09-08 | 2008-03-12 | 福特环球技术公司 | Fet monitoring and protecting system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102436218A (en) | 2012-05-02 |
| JP5459168B2 (en) | 2014-04-02 |
| JP2012075032A (en) | 2012-04-12 |
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