CN202940558U - Safety relay protection circuit - Google Patents
Safety relay protection circuit Download PDFInfo
- Publication number
- CN202940558U CN202940558U CN 201220659695 CN201220659695U CN202940558U CN 202940558 U CN202940558 U CN 202940558U CN 201220659695 CN201220659695 CN 201220659695 CN 201220659695 U CN201220659695 U CN 201220659695U CN 202940558 U CN202940558 U CN 202940558U
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- safety relay
- loop
- detecting
- control assembly
- reset
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Abstract
The utility model discloses a safety relay protection circuit which comprises a transformer assembly, a detecting and starting control assembly and a magnetic core assembly. The input of the transformer assembly is connected to a voltage input channel, and the transformer assembly outputs a working voltage. The detecting and starting control assembly is powered by the working voltage output by the transformer assembly and comprises detecting channels, a manual reset channel and an automatic reset channel. The magnetic core assembly is connected to the detecting and starting control assembly and controls the on/off of contacts of a safety relay. The safety relay protection circuit disclosed by the utility model has a higher level of security, can be applied to a port crane control system and can be used to effectively improve the safety level of the operation of a port crane.
Description
Technical field
The utility model relates to protection control circuit field, more particularly, relates to a kind of safety relay protection loop.
Background technology
In the operation process of harbour lifting equipment, when fortuitous event occurring for operations such as preventing from moving, hoist, large dolly moves, Field Force, equipment, environment are caused harmful effect, reduce as far as possible the danger coefficient of operating equipment.Usually need to be in the control system circuit, design emergent stopping protective circuit, when dangerous factor, operation tightly stops the loop, cuts off equipment working power etc., guarantees safety.
The mode that the common employing of protective circuit tightly stops button series winding common relay of tightly stopping on existing harbour lifting equipment forms the single channel road that tightly has a power failure, and pressing and tightly stopping button, the actuating of relay, arrestment operation when abnormal appears in equipment.Some designs are in order further to increase the reliability on tight power failure road, use two or more relays and design tight power failure road, increase redundancy.Based on the protective circuit of common relay, simplicity of design, cost is lower, but that distinct disadvantage is safe class is not high, because in a single day clinkering phenomenon in contact appears in common relay, and the line short phenomenon, with diagnostic function, safe class does not reduce greatly.
The utility model content
The utility model is intended to propose a kind of more relay protection loop of high safety grade that has.
According to an embodiment of the present utility model, propose a kind of safety relay and protect the loop, comprising: transformer device, detecting and startup control assembly and core assembly.The input of transformer device is connected to the voltage input channel, transformer device output services voltage.Detecting and startup control assembly are powered by the operating voltage of transformer device output, detect and start control assembly to comprise detection channel, hand-reset passage and the passage that automatically resets.Core assembly is connected to detecting and starts control assembly, and core assembly is controlled the break-make of safety relay contact.
In one embodiment, voltage input channel input 220V voltage, the operating voltage of output is 24V.
In one embodiment, be connected with indication component and earth terminal between the input of the output of transformer device and detecting and startup control assembly, the normal condition of indication component indication operating voltage.
In one embodiment, detecting and startup control assembly comprise two groups of detection channel, and each group detection channel has inspection terminal.The hand-reset passage of detecting and startup control assembly has the hand-reset terminal, and the hand-reset connecting terminals is received reset button.The passage that automatically resets of detecting and startup control assembly has the terminal of automatically reseting.
In one embodiment, the safety relay contact comprises normal open walk and normally closed passage.The safety relay contact comprises three normal open walks and two normally closed passages.
Safety relay protection of the present utility model loop has higher safe class, can be applied in the harbour lifting equipment control system, can effectively improve the safe class of harbour lifting equipment operation.
Description of drawings
It is more obvious that the above and other feature of the utility model, character and advantage will become by the description below in conjunction with drawings and Examples, and identical Reference numeral represents identical feature all the time in the accompanying drawings, wherein:
Fig. 1 has disclosed the schematic block circuit diagram of protecting the loop according to the safety relay of an embodiment of the present utility model.
The safety relay protection loop configuration that Fig. 2 has disclosed according to an embodiment of the present utility model becomes main operation tightly to stop to protect the state diagram in loop.
Fig. 3 has disclosed to become to hoist according to the safety relay of an embodiment of the present utility model protection loop configuration and has tightly stopped to protect the state diagram in loop.
Embodiment
The utility model is intended to propose a kind of safety relay and protects the loop.So-called safety relay is not have out of order relay, but makes well-regulated action when breaking down, and it has the forced guiding contact point structure, just in case also can guarantee safety when contact clinkering phenomenon occurs, this point is with conventional relay difference fully.Safety relay is the relay that special task for the condition harshness or the relevant application of safety design, and can not bring danger to personal security or process safety when it loses efficacy.When a safety relay has reached specific reliability or probability of malfunction grade as requested, just mean that it has self diagnostic capability, can monitor hardware state, executing state and the system mode of various aspects.
The basic function of safety relay is as follows:
Measuring ability: can confirm security-related request, for example: press " tightly stopping button ".
Closing function: close potential danger, for example: the power supply of closing the downstream contactor.
Fig. 1 has disclosed the schematic block circuit diagram of protecting the loop according to the safety relay of an embodiment of the present utility model.With reference to shown in Figure 1, this safety relay protects loop 100 comprise transformer device 102, detecting and start control assembly 104 and core assembly 106.
The input of transformer device 102 is connected to the voltage input channel, transformer device output services voltage.In the embodiment shown in fig. 1, voltage input channel input 220V voltage, the operating voltage of output is 24V.Continuation is with reference to figure 1, and the voltage input channel has two terminals: the first terminal A1 and the second terminal A2, two terminals consist of the voltage input channel of 220V.Transformer device 102 becomes 24V voltage for the module of rear class with the 220V voltage transitions.
Detecting and startup control assembly 104 are by the operating voltage power supply of transformer device 102 outputs.In the embodiment shown in fig. 1, be connected with indication component 103 and earth terminal between the input of the output of transformer device 102 and detecting and startup control assembly 104.The normal condition of indication component 103 indication operating voltages, namely the normal output 24V of transformer device 102 operating voltage is lighted indication component 103, and indication component 103 is not luminous when the 24V operating voltage of transformer device 102 outputs is undesired.Also draw earth terminal PE between the input of the output of transformer device 102 and detecting and startup control assembly 104.Detecting and startup control assembly 104 comprise detection channel, hand-reset passage and the passage that automatically resets.In the embodiment shown in fig. 1, detecting and startup control assembly 104 comprise two groups of detection channel, and each group detection channel has inspection terminal.First group of detection channel drawn inspection terminal Y11 and Y12, and second group of detection channel drawn inspection terminal Y21 and Y22.According to the application needs of reality, can select to be connected to first group of detection channel and/or second group of detection channel, consist of list/binary channels and tightly stop detecting.The hand-reset passage of detecting and startup control assembly 104 has the hand-reset terminal, and the hand-reset connecting terminals is received reset button.In the embodiment shown in fig. 1, terminal Y33 and Y34 are the hand-reset terminal, can connect the startup reset button.The passage that automatically resets of detecting and startup control assembly 104 has the terminal of automatically reseting.In the embodiment shown in fig. 1, terminal Y43 and Y44 are the terminal that automatically resets, and with terminal Y43 and Y44 short circuit, detect and start control assembly 104 and be in automatic startup reset mode.
Safety relay protection of the present utility model loop can be configured to various application models.The safety relay protection loop configuration that Fig. 2 has disclosed according to an embodiment of the present utility model becomes main operation tightly to stop to protect the state diagram in loop.Move harbour lifting equipment master shown in Figure 2 and tightly stop the protective circuit application model; terminal A1 and A2 connect the 220V electric power loop; terminal Y10, Y11 and Y12 are cascaded into the outside and tightly stop button, and terminal Y21 and Y22 short circuit form single, and terminal Y33 and Y34 are for manually booting reset mode.
Fig. 3 has disclosed to become to hoist according to the safety relay of an embodiment of the present utility model protection loop configuration and has tightly stopped to protect the state diagram in loop.Hoist at harbour lifting equipment shown in Figure 3 and tightly stop the protective circuit pattern; terminal A1 and A2 connect the 220V electric power loop; terminal Y10, Y11 and Y12 are cascaded into the outside and tightly stop button, and terminal Y21 and Y22 short circuit form single, and terminal Y33 and Y34 are for manually booting reset mode.
In Fig. 2 and application model shown in Figure 3, reset mode all adopts hand-reset, external startup reset button.The design of hand-reset start detection is adopted in the loop that resets, and has guaranteed after fault occurs, and the self-sustaining of safety relay state only has to reset after getting rid of dependent failure by professional testing staff, safety relay could be reset to normal condition.This measure has strengthened tightly stopping the coefficient of safety in loop greatly; fundamentally stopped due to conventional relay fault; external short circuits etc. tightly stop the loop device fault and event that the crane that causes can't stop occurs, and have farthest guaranteed the safety of related personnel and equipment on the machine.
Safety relay of the present utility model protection loop coordinates and tightly stops Action Button based on safety relay, and resetting starts the loop, and flexible Application, form list/binary channels and tightly stop as required, and what self-starting resetted/manually boot reset mode tightly stops protective circuit.Safety relay protection of the present utility model loop has higher safe class, can be applied in the harbour lifting equipment control system, can effectively improve the safe class of harbour lifting equipment operation.
Above-described embodiment is to provide to being familiar with the person in the art and realizes or use of the present utility model; those skilled in the art can make various modifications or variation and not break away from utility model thought of the present utility model above-described embodiment; thereby protection range of the present utility model do not limit by above-described embodiment, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (8)
1. a safety relay is protected the loop, it is characterized in that, comprising:
Transformer device, the input of transformer device is connected to the voltage input channel, transformer device output services voltage;
Detect and start control assembly, detecting and start control assembly and powered by the operating voltage of transformer device output, detecting and startup control assembly comprise detection channel, hand-reset passage and the passage that automatically resets;
Core assembly is connected to detecting and starts control assembly, and core assembly is controlled the break-make of safety relay contact.
2. safety relay as claimed in claim 1 is protected the loop, it is characterized in that, described voltage input channel input 220V voltage, and the operating voltage of output is 24V.
3. safety relay as claimed in claim 1 is protected the loop, it is characterized in that, is connected with indication component and earth terminal between the input of the output of described transformer device and detecting and startup control assembly, the normal condition of indication component indication operating voltage.
4. safety relay as claimed in claim 1 is protected the loop, it is characterized in that, described detecting and startup control assembly comprise two groups of detection channel, and each group detection channel has inspection terminal.
5. safety relay as claimed in claim 1 is protected the loop, it is characterized in that, the hand-reset passage of described detecting and startup control assembly has the hand-reset terminal, and the hand-reset connecting terminals is received reset button.
6. safety relay as claimed in claim 1 is protected the loop, it is characterized in that, the passage that automatically resets of described detecting and startup control assembly has the terminal of automatically reseting.
7. safety relay as claimed in claim 1 protection loop, is characterized in that, described safety relay contact comprises normal open walk and normally closed passage.
8. safety relay as claimed in claim 7 protection loop, is characterized in that, described safety relay contact comprises three normal open walks and two normally closed passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659695 CN202940558U (en) | 2012-12-04 | 2012-12-04 | Safety relay protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659695 CN202940558U (en) | 2012-12-04 | 2012-12-04 | Safety relay protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940558U true CN202940558U (en) | 2013-05-15 |
Family
ID=48324781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220659695 Expired - Lifetime CN202940558U (en) | 2012-12-04 | 2012-12-04 | Safety relay protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940558U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477500A (en) * | 2020-03-31 | 2020-07-31 | 南京优倍电气有限公司 | Starting circuit for safety relay compatible with three reset modes |
-
2012
- 2012-12-04 CN CN 201220659695 patent/CN202940558U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477500A (en) * | 2020-03-31 | 2020-07-31 | 南京优倍电气有限公司 | Starting circuit for safety relay compatible with three reset modes |
| CN111477500B (en) * | 2020-03-31 | 2022-03-25 | 南京优倍电气技术有限公司 | Starting circuit for safety relay compatible with three reset modes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130515 |
|
| CX01 | Expiry of patent term |