CN206283242U - A kind of frequency converter safe torque turn-off function circuit - Google Patents
A kind of frequency converter safe torque turn-off function circuit Download PDFInfo
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- CN206283242U CN206283242U CN201621317028.9U CN201621317028U CN206283242U CN 206283242 U CN206283242 U CN 206283242U CN 201621317028 U CN201621317028 U CN 201621317028U CN 206283242 U CN206283242 U CN 206283242U
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Abstract
The utility model is related to AC frequency conversion drive technology field, a kind of especially frequency converter safe torque turn-off function circuit, including external security control device, first safety relay, the second safety relay, the first protection circuit, second protection circuit, frequency converter accessory power supply, the first indicating circuit, second indicating circuit, first feedback circuit, the second feedback circuit, frequency converter CPU, electric source filter circuit, IGBT drive circuit；First safety relay, the first protection circuit, the first indicating circuit and the first feedback circuit collectively constitute first via STO control passages, second safety relay, the second protection circuit, the second indicating circuit and the second feedback circuit collectively constitute the second road STO control passages, by using two groups of multiconductor safety relays and the separate STO control passages of two-way, using component number is few, circuit structure simple, make the safety and reliability of device high.
Description
Technical field
The utility model is related to AC frequency conversion drive technology field, especially a kind of frequency converter safe torque turn-off function electricity
Road.
Background technology
Safe torque is turned off（Safe torque off, STO）It is a kind of security function for frequency converter product, its work
With being the accidental activation that prevents motor, it is ensured that personnel and equipment safety.Existing frequency converter safe torque turn-off function circuit leads to
Chang Jun is that, using the electronic devices such as optocoupler, triode, gate circuit composition, circuit structure is relative complex, and the circuit use having
Be all the way STO block inverter on bridge drive, all the way inverter block inverter under bridge drive design and without feedback
Signal causes very big potential safety hazard to external security control loop and controller.
The content of the invention
To solve the technical deficiency existing for said apparatus, the utility model is turned off there is provided a kind of frequency converter safe torque
Functional circuit, the device, by using two groups of multiconductor safety relays, makes using component number is few, circuit structure simple
The safety and reliability of device is high.
The utility model solves the technical scheme that its technical problem used, a kind of frequency converter safe torque turn-off function
Circuit, including external security control device, the first safety relay, the second safety relay, the first protection circuit, the second protection electricity
Road, frequency converter accessory power supply, the first indicating circuit, the second indicating circuit, the first feedback circuit, the second feedback circuit, frequency converter
CPU, electric source filter circuit, IGBT drive circuit；First safety relay, the first protection circuit, the first indicating circuit and first
Feedback circuit collectively constitutes first via STO control passages, the second safety relay, the second protection circuit, the second indicating circuit and
Second feedback circuit collectively constitutes the second road STO control passages, and two of the first safety relay and the second safety relay are often
Closed contact is composed in series external security control device backfeed loop, and 11 pin of the first safety relay connect external security control device
STF-, 12 pin of the first safety relay connect 11 pin of the second safety relay, and 11 pin of the second safety relay connect outside peace
The STF+ of full controller, the first protection circuit input connects the STOA+ and STOA- of external security control device, the second protection electricity
Road input connects the STOB+ and STOB- of external security control device, and the first protection circuit output end connects the first safety relay
Loop A 1 and A2, the second protection circuit output end connects the loop A 1 and A2 of the second safety relay, the first feedback circuit, the
Two feedback circuit outputs connect frequency converter CPU, and the first indicating circuit includes the 3rd current-limiting resistance R3, the 3rd light emitting diode
LED3,21 pin of the first safety relay connect frequency converter accessory power supply, and 22 pin of the first safety relay connect the first indicating circuit
The 3rd current-limiting resistance R3 a pin, the second indicating circuit include the 4th current-limiting resistance R4, the 4th LED 4, second
21 pin of safety relay connect frequency converter accessory power supply, and 22 pin of the second safety relay connect the 4th current limliting of the second indicating circuit
One pin of resistance R4, the first feedback circuit includes the 5th current-limiting resistance R5, the 3rd filter resistance C3, the 33 of the first safety relay
Pin connects frequency converter accessory power supply, and 34 pin of the first safety relay connect a pin of the 5th current-limiting resistance R5 of the first feedback circuit,
Second feedback circuit includes the 6th current-limiting resistance R6, the 4th filter resistance C4, and it is auxiliary that 33 pin of the second safety relay connect frequency converter
Power supply, 34 pin of the second safety relay is helped to connect a pin of the 6th current-limiting resistance R6 of the second feedback circuit, the first safety relay
43 pin of device connect frequency converter accessory power supply, and 44 pin of the first safety relay connect 43 pin of the second safety relay, the second safety
44 pin of relay connect electric source filter circuit, and electric source filter circuit connects IGBT drive circuit, the first safety relay, the second safety
Two normally opened contact series connection of relay, additional power source filter circuit collectively constitute the current supply circuit of IGBT drive circuit.
First, second described safety relay model SR4D4024, two normally opened contacts of this relay band, two are often
Closed contact, inside uses the contact structure of forced guiding.
The first described protection circuit includes the first resettable fuse F1, the first filter capacitor C1, first anti-reverse two
Pole pipe D1, the first current-limiting resistance R1 and the first LED 1,.
The second described protection circuit includes the second resettable fuse F2, the second filter capacitor C2, second anti-reverse two
Pole pipe D2, the second current-limiting resistance R2 and the second LED 2,.
The electric source filter circuit includes the 3rd resettable fuse F3, the first filter inductance L1, the 5th filter capacitor C5
With the 6th filter capacitor C6, the pin of F3 connects 44 pin of the second safety relay, and another pin of F3 connect a pin of L1, and L1 is in addition
One pin meets+5V1, and the positive pole of C5 meets+5V1, negative pole and meets GND, and C6 is connect between+5V1 and GND.
First safety relay is connected with two normally opened contacts of the second safety relay and is driven for blocking IGBT
The power supply of isolated location.
Mechanical interlocked design is used between the normally opened contact and normally-closed contact of first and second safety relay.
The first and second roads STO control passages are separate, any simultaneously to cut off all IGBT drivings all the way
The primary side diode anode power supply of isolation optocoupler, while moving diode negative terminal level to high level.
Workflow, the input signal of the first protection circuit is first via STO control passages input STOA+ and STOA-, defeated
Go out to connect the A1 pin and A2 pin of the first safety relay.The input signal of the second protection circuit is the second road STO control passage inputs
STOB+ and STOB-, output connects the A1 pin and A2 pin of the second safety relay.
It is anti-that first safety relay is composed in series external security control device with two normally opened contacts of the second safety relay
Road is fed back to, the STF+ and STF- of external security control device is met, specially：11 pin of the first safety relay meet STF-, the first peace
12 pin of all relay connect 11 pin of the second safety relay, and 11 pin of the first safety relay meet STF+.
First indicating circuit include the 3rd current-limiting resistance R3, the 3rd LED 3, for indicate first safety after
The state of electrical equipment normally-closed contact 21-22, specific connection：21 pin of the first safety relay connect frequency converter accessory power supply, the first peace
22 pin of all relay connect a pin of the 3rd current-limiting resistance R3, and an other pin of R3 connects the anode of the 3rd LED 3,
The negative electrode of LED3 meets+5V.Second indicating circuit includes the 4th current-limiting resistance R4, the 4th LED 4, for indicating the
The state of two safety relay normally-closed contact 21-22, specific connection：21 pin of the second safety relay connect frequency converter auxiliary electricity
Source, 22 pin of the second safety relay connect a pin of the 4th current-limiting resistance R4, and an other pin of R4 connects the 3rd light emitting diode
The anode of LED4, the negative electrode of LED4 meets+5V.
First feedback circuit includes the 5th current-limiting resistance R5, the 3rd filter capacitor C3, for detecting the first safety relay
The state of normally opened contact 33-34, specific connection：33 pin of the first safety relay connect frequency converter accessory power supply, the first safety after
34 pin of electrical equipment connect a pin of the 5th current-limiting resistance R5, and an other pin of R5 connects a pin of the 3rd filter capacitor C3, C3 other
Pin is sent to frequency converter master control borad.Second feedback circuit includes the 6th current-limiting resistance R6, the 4th filter capacitor C4, for detecting second
The state of safety relay normally opened contact 33-34, specific connection：33 pin of the second safety relay connect frequency converter accessory power supply,
34 pin of the second safety relay connect a pin of the 6th current-limiting resistance R6, and an other pin of R6 connects the one of the 4th filter capacitor C4
Pin, the other pin of C4 are sent to frequency converter master control borad.
First safety relay is connected with two normally opened contacts of the second safety relay and is isolated for blocking IGBT drivings
The power supply of unit.Specially：43 pin of the first safety relay connect frequency converter accessory power supply, the 44 of the first safety relay
Pin connects 43 pin of the second safety relay, and 44 pin of the second safety relay connect electric source filter circuit.Electric source filter circuit includes
The one pin connection of the 3rd resettable fuse F3, the first filter inductance L1, the 5th filter capacitor C5, the 6th filter capacitor C6, F3
44 pin of the second safety relay, another pin of F3 connect a pin of L1, and an other pin of L1 meets+5V1, and the positive pole of C5 meets+5V1, bears
Pole meets GND, and C6 is connect between+5V1 and GND.+ 5V1 is the power supply of IGBT drive circuit, is access to transducer drive plate.
On off state and four states of light emitting diode according to STF, can determine whether out the real work shape of circuit
State.
The beneficial effects of the utility model are, a kind of frequency converter safe torque turn-off function circuit, by using more than two groups
Contact safety relay and the separate STO control passages of two-way, using component number is few, circuit structure simple, make dress
The safety and reliability put is high.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the utility model STO function logic tables.
Fig. 2 is the utility model general principles block diagram.
Fig. 3 is STO circuit theory diagrams of the present utility model.
Fig. 4 is the frequency converter accessory power supply block diagram in the utility model.
Fig. 5 is the IGBT drive circuit schematic diagram in the utility model.
1. external security control device in figure, 2. the first safety relay, 3. the second safety relay, 4. the first protection electricity
Road, 5. the second protection circuit, 6. frequency converter accessory power supply, 7. the first indicating circuit, 8. the second indicating circuit, 9. the first feedback electricity
Road, 10. the second feedback circuit, 11 frequency converter CPU, 12. electric source filter circuits, 13.IGBT drive circuits.
Fig. 1 is the utility model STO function logic tables.Table 1 lists the state of the different lower functional circuits of input combination, from
Table 1 is visible：Only STOA and STOB all in the case of high level, IGBT drives and can just be enabled, STOA or STOB any one
It is low level, IGBT drives and is blocked.Additionally, on off state and four states of light emitting diode according to STF,
Can determine whether out the actual working state of circuit.
Fig. 4 is frequency converter accessory power supply block diagram, and accessory power supply uses DC/DC single-ended reverse exciting multiple-channel outputs design side
Case, its input connects the dc bus DC+ and DC- inside frequency converter, including multigroup isolation and amplifier：PU+/PU- is in frequency converter U phases
Pipe IGBT driving power supplies, PV+/PV- are that pipe IGBT driving power supplies, PW+/PW- are pipe IGBT in frequency converter W phases in frequency converter V phases
Driving power supply, PL+/PL- are that three pipe IGBT driving power supplies under frequency converter ,+24V/COM are that user's power supply ,+5V/+15V/-15V are
Control power supply.The common GND of+5V/+15V/-15V, as the light current circuit power supply of frequency converter.+ 5V controls defeated by STO circuits
Go out+5V1, as the primary side power supply of IGBT isolation drive units.
Fig. 5 is IGBT drive circuit schematic diagram, and this partial circuit is located on transducer drive plate.UU1 is slow for drive signal
Chip is rushed, its pin of power supply 20 meets+5V1, its six tunnel is exported for driving 6 road IGBT to drive optocoupler 3120, and six tunnels of UU1 are defeated
Go out pin O1-O6 respectively by a pull-up resistor be connected to+5V power supplys then respectively by a current-limiting resistance be connected to 6 roads drive light
The negative electrode of the primary side diode of coupling 3120.6 tunnel 3120 drives the anode of optocoupler to be all connected on+5V1.Optocoupler OP1 is driven to drive U phases
Upper pipe IGBT, secondary side power supply is PU+/PU-；Optocoupler OP2 is driven to drive pipe IGBT in V phases, secondary side power supply is PV+/PV-；
Optocoupler OP3 is driven to drive pipe IGBT in W phases, secondary side power supply is PW+/PW-；Optocoupler OP4 is driven to drive U phase down tubes IGBT, two
Secondary side power supply is PL+/PL-；Optocoupler OP5 is driven to drive V phase down tube IGBT, secondary side power supply is PL+/PL-；Drive optocoupler OP6
W phase down tube IGBT are driven, secondary side power supply is PL+/PL-.When external security control device sends shut-off torque command ,+5V1 electricity
Source is changed into 0V, and UU1 outputs are all changed into+5V, therefore the output voltage on 6 tunnels 3120 all moves negative voltage to, and all IGBT are closed
It is disconnected.
Specific embodiment
Referring to the drawings, a kind of frequency converter safe torque turn-off function circuit, including external security control device 1, the first safety
Relay 2, the second safety relay 3, the first protection circuit 4, the second protection circuit 5, frequency converter accessory power supply 6, first indicates
Circuit 7, the second indicating circuit 8, the first feedback circuit 9, the second feedback circuit 10, frequency converter CPU11, electric source filter circuit 12,
IGBT drive circuit 13；First safety relay 2, the first protection circuit 4, the first indicating circuit 7 and the first feedback circuit 9 are common
Composition first via STO control passages, the second safety relay 3, the second protection circuit 5, the second indicating circuit 8 and the second feedback electricity
Road 10 collectively constitutes two normally-closed contacts of the second road STO control passages, the first safety relay 2 and the second safety relay 3
The backfeed loop of external security control device 1 is composed in series, 11 pin of the first safety relay 2 meet the STF- of external security control device 1,
12 pin of the first safety relay 2 connect 11 pin of the second safety relay 3, and 11 pin of the second safety relay 3 connect external security
The STF+ of controller 1, the STOA+ and STOA- of the input of the first protection circuit 4 connection external security control device 1, the second protection electricity
The STOB+ and STOB- of road 5 input connection external security control device 1, the safety of the output end of the first protection circuit 4 connection first after
The loop A 1, A2 of electrical equipment, the output end of the second protection circuit 5 connects the loop A 1, A2 of the second safety relay 3, the first feedback electricity
Road 9, the output end of the second feedback circuit 10 connection frequency converter CPU11, the first indicating circuit 7 include the 3rd current-limiting resistance R3, the 3rd
LED 3,21 pin of the first safety relay 2 connect frequency converter accessory power supply 6, and 22 pin of the first safety relay 2 connect
One pin of the 3rd current-limiting resistance R3 of the first indicating circuit 7, the second indicating circuit 8 includes that the 4th current-limiting resistance R4, the 4th light
Diode (LED) 4,21 pin of the second safety relay 3 connect frequency converter accessory power supply 6, and 22 pin of the second safety relay 3 connect second
One pin of the 4th current-limiting resistance R4 of indicating circuit 8, the first feedback circuit 9 includes the 5th current-limiting resistance R5, the 3rd filter resistance
C3,33 pin of the first safety relay 2 connect frequency converter accessory power supply 6, and 34 pin of the first safety relay 2 connect the first feedback circuit
One pin of 9 the 5th current-limiting resistance R5, the second feedback circuit 10 includes the 6th current-limiting resistance R6, the 4th filter resistance C4, second
33 pin of safety relay 3 connect frequency converter accessory power supply 6, and 34 pin of the second safety relay 3 connect the of the second feedback circuit 10
One pin of six current-limiting resistance R6,43 pin of the first safety relay 2 connect frequency converter accessory power supply 6, the 44 of the first safety relay
Pin connects 43 pin of the second safety relay 3, and 44 pin of the second safety relay 3 connect electric source filter circuit 12, electric source filter circuit
12 connect IGBT drive circuit 13, the first safety relay 2, the 3 two normally opened contact series connection of the second safety relay, additional power source filter
Wave circuit 12 collectively constitutes the current supply circuit of IGBT drive circuit 13.
Described the first safety relay 2, the model SR4D4024 of the second safety relay 3, two, this relay band is often
Contact is opened, two normally-closed contacts, inside uses the contact structure of forced guiding.
The first described protection circuit 4 includes the first resettable fuse F1, the first filter capacitor C1, first anti-reverse two
Pole pipe D1, the first current-limiting resistance R1 and the first LED 1.
The second described protection circuit 5 includes the second resettable fuse F2, the second filter capacitor C2, second anti-reverse two
Pole pipe D2, the second current-limiting resistance R2 and the second LED 2.
The electric source filter circuit 12 includes the 3rd resettable fuse F3, the first filter inductance L1, the 5th filter capacitor
C5, the 6th filter capacitor C6, a pin of F3 connect 44 pin of the second safety relay 3, and another pin of F3 connect a pin of L1, and L1's is another
An outer pin meets+5V1, and the positive pole of C5 meets+5V1, negative pole and meets GND, and C6 is connect between+5V1 and GND.
First safety relay 2 is connected with two normally opened contacts of the second safety relay 3 and is driven for blocking IGBT
The power supply of dynamic isolated location.
Mechanical mutual is used between the normally opened contact and normally-closed contact of the safety relay 3 of first safety relay 2 and second
Lock design.
The first and second roads STO control passages are separate, any simultaneously to cut off all IGBT drivings all the way
The primary side diode anode power supply of isolation optocoupler, while moving diode negative terminal level to high level.
The input signal of the first protection circuit 4 is that first via STO control passages are input into STOA+ and STOA-, and output connects first
The A1 pin and A2 pin of safety relay 2.The input signal of the second protection circuit 5 be the second road STO control passage input STOB+ and
STOB-, output connects the A1 pin and A2 pin of the second safety relay 3.
Two normally opened contacts of the first safety relay 2 and the second safety relay 3 are composed in series external security control device 1
Backfeed loop, meets the STF+ and STF- of external security control device 1, specially：11 pin of the first safety relay 2 meet STF-, the
12 pin of one safety relay 2 connect 11 pin of the second safety relay 3, and 11 pin of the first safety relay 2 meet STF+.
First indicating circuit 7 includes the 3rd current-limiting resistance R3, the 3rd LED 3, for indicate the first safety after
The state of the normally-closed contact 21-22 of electrical equipment 2, specific connection：21 pin of the first safety relay 2 connect frequency converter accessory power supply 6, first
22 pin of safety relay 2 connect a pin of the 3rd current-limiting resistance R3, and an other pin of R3 connects the sun of the 3rd LED 3
Pole, the negative electrode of LED3 meets+5V.Second indicating circuit 8 includes the 4th current-limiting resistance R4, the 4th LED 4, for referring to
Show the state of the normally-closed contact 21-22 of the second safety relay 3, specific connection：It is auxiliary that 21 pin of the second safety relay 3 connect frequency converter
22 pin of power supply 6, the second safety relay 3 are helped to connect a pin of the 4th current-limiting resistance R4, an other pin of R4 connects the 3rd luminous two
The anode of pole pipe LED4, the negative electrode of LED4 meets+5V.
First feedback circuit 9 includes the 5th current-limiting resistance R5, the 3rd filter capacitor C3, for detecting the first safety relay
The state of 2 normally opened contact 33-34, specific connection：33 pin of the first safety relay 2 connect frequency converter accessory power supply 6, the first safety
34 pin of relay 2 connect a pin of the 5th current-limiting resistance R5, and an other pin of R5 connects a pin of the 3rd filter capacitor C3, and C3 is in addition
One pin is sent to frequency converter master control borad.Second feedback circuit 10 includes the 6th current-limiting resistance R6, the 4th filter capacitor C4, for detecting
The state of the normally opened contact 33-34 of the second safety relay 3, specific connection：33 pin of the second safety relay 3 connect frequency converter auxiliary
Power supply 6,34 pin of the second safety relay 3 connect a pin of the 6th current-limiting resistance R6, and an other pin of R6 connects the 4th filter capacitor
One pin of C4, the other pin of C4 are sent to frequency converter master control borad.
First safety relay 2 connected with two normally opened contacts of the second safety relay 3 for block IGBT drive every
From the power supply of unit.Specially：43 pin of the first safety relay 2 connect frequency converter accessory power supply 6, the first safety relay
2 44 pin connect 43 pin of the second safety relay 3, and 44 pin of the second safety relay 3 connect electric source filter circuit 12.Power filter
Circuit 12 includes the 3rd resettable fuse F3, the first filter inductance L1, the 5th filter capacitor C5, the 6th filter capacitor C6, F3
A pin connect 44 pin of the second safety relay 3, another pin of F3 connect a pin of L1, and an other pin of L1 meets+5V1, and C5 is just
Pole meets+5V1, negative pole and meets GND, and C6 is connect between+5V1 and GND.+ 5V1 is the power supply of IGBT drive circuit, is access to frequency conversion
Device driving plate.
On off state and four states of light emitting diode according to STF, can determine whether out the real work shape of circuit
State.
Claims (8)
1. a kind of frequency converter safe torque turn-off function circuit, including external security control device, the first safety relay, the second peace
All relay, the first protection circuit, the second protection circuit, frequency converter accessory power supply, the first indicating circuit, the second indicating circuit,
First feedback circuit, the second feedback circuit, frequency converter CPU, electric source filter circuit, IGBT drive circuit；Characterized in that, first
Safety relay, the first protection circuit, the first indicating circuit and the first feedback circuit collectively constitute first via STO control passages；
It is logical that second safety relay, the second protection circuit, the second indicating circuit and the second feedback circuit collectively constitute the second road STO controls
Road；First safety relay is composed in series external security control device and feeds back to two normally-closed contacts of the second safety relay
Road；11 pin of the first safety relay meet the STF- of external security control device, and 12 pin of the first safety relay connect the second safety
11 pin of relay, 11 pin of the second safety relay meet the STF+ of external security control device, and the first protection circuit input connects
Meet the STOA+ and STOA- of external security control device, the STOB+ of the second protection circuit input connection external security control device and
STOB-, the first protection circuit output end connects the loop A 1 and A2 of the first safety relay, the connection of the second protection circuit output end
The loop A 1 and A2 of the second safety relay；First feedback circuit, the second feedback circuit output connection frequency converter CPU11, the
One indicating circuit includes the 3rd current-limiting resistance R3, the 3rd LED 3；21 pin of the first safety relay connect frequency converter
Accessory power supply, 22 pin of the first safety relay connect a pin of the 3rd current-limiting resistance R3 of the first indicating circuit, and second indicates electricity
Road includes the 4th current-limiting resistance R4, the 4th LED 4, and 21 pin of the second safety relay connect frequency converter accessory power supply,
22 pin of the second safety relay connect a pin of the 4th current-limiting resistance R4 of the second indicating circuit, and the first feedback circuit includes the 5th
Current-limiting resistance R5, the 3rd filter resistance C3,33 pin of the first safety relay connect frequency converter accessory power supply, the first safety relay
34 pin connect the first feedback circuit the 5th current-limiting resistance R5 a pin, the second feedback circuit includes the 6th current-limiting resistance R6, the
Four filter resistance C4,33 pin of the second safety relay connect frequency converter accessory power supply, and 34 pin of the second safety relay connect second
One pin of the 6th current-limiting resistance R6 of feedback circuit, 43 pin of the first safety relay connect frequency converter accessory power supply, the first safety
44 pin of relay connect 43 pin of the second safety relay, and 44 pin of the second safety relay connect electric source filter circuit, power supply filter
Wave circuit connects IGBT drive circuit, the first safety relay, the two normally opened contact series connection of the second safety relay, additional power source filter
Wave circuit collectively constitutes the current supply circuit of IGBT drive circuit.
2. a kind of frequency converter safe torque turn-off function circuit according to claims 1, it is characterised in that described
One safety relay, the second safety relay model SR4D4024, two normally opened contacts of this relay band, two are normally closed tactile
Point, inside uses the contact structure of forced guiding.
3. a kind of frequency converter safe torque turn-off function circuit according to claims 1, it is characterised in that described
One protection circuit includes the first resettable fuse F1, the first filter capacitor C1, the first anti-reverse diode D1, the first current limliting electricity
Resistance R1 and the first LED 1.
4. a kind of frequency converter safe torque turn-off function circuit according to claims 1, it is characterised in that described
Two protection circuits include the second resettable fuse F2, the second filter capacitor C2, the second anti-reverse diode D2, the second current limliting electricity
Resistance R2 and the second LED 2.
5. a kind of frequency converter safe torque turn-off function circuit according to claims 1, it is characterised in that the power supply
Filter circuit includes the 3rd resettable fuse F3, the first filter inductance L1, the 5th filter capacitor C5 and the 6th filter capacitor C6,
One pin of F3 connects 44 pin of the second safety relay, and another pin of F3 connect a pin of L1, and an other pin of L1 meets+5V1, the positive pole of C5
+ 5V1 is met, negative pole meets GND, and C6 is connect between+5V1 and GND.
6. a kind of frequency converter safe torque turn-off function circuit according to claims 1, it is characterised in that described first
Safety relay is connected with two normally opened contacts of the second safety relay and the power supply electricity of isolated location is driven for blocking IGBT
Source.
7. a kind of frequency converter safe torque turn-off function circuit according to claims 1, it is characterised in that described first
Mechanical interlocked design is used between the normally opened contact and normally-closed contact of safety relay and the second safety relay.
8. a kind of frequency converter safe torque turn-off function circuit according to claims 1, it is characterised in that described first
It is separate with the second road STO control passages, it is any simultaneously to cut off the primary side two that all IGBT drive isolation optocoupler all the way
Pole pipe anode power supply, while moving diode negative terminal level to high level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621317028.9U CN206283242U (en) | 2016-12-03 | 2016-12-03 | A kind of frequency converter safe torque turn-off function circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621317028.9U CN206283242U (en) | 2016-12-03 | 2016-12-03 | A kind of frequency converter safe torque turn-off function circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206283242U true CN206283242U (en) | 2017-06-27 |
Family
ID=59074545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621317028.9U Expired - Fee Related CN206283242U (en) | 2016-12-03 | 2016-12-03 | A kind of frequency converter safe torque turn-off function circuit |
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| CN (1) | CN206283242U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594767A (en) * | 2018-06-01 | 2018-09-28 | 珠海格力电器股份有限公司 | A kind of emergency stop control circuit of industrial robot |
| CN112117952A (en) * | 2019-06-20 | 2020-12-22 | 台达电子工业股份有限公司 | Motor driving system and control method |
| CN113692702A (en) * | 2018-11-30 | 2021-11-23 | 伦茨欧洲股份公司 | Method for monitoring the operation of a frequency converter and frequency converter |
-
2016
- 2016-12-03 CN CN201621317028.9U patent/CN206283242U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594767A (en) * | 2018-06-01 | 2018-09-28 | 珠海格力电器股份有限公司 | A kind of emergency stop control circuit of industrial robot |
| CN113692702A (en) * | 2018-11-30 | 2021-11-23 | 伦茨欧洲股份公司 | Method for monitoring the operation of a frequency converter and frequency converter |
| CN112117952A (en) * | 2019-06-20 | 2020-12-22 | 台达电子工业股份有限公司 | Motor driving system and control method |
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