CN203127983U - Lifting electromagnet short-circuit protection device controlled by programmable logic controller (PLC) - Google Patents
Lifting electromagnet short-circuit protection device controlled by programmable logic controller (PLC) Download PDFInfo
- Publication number
- CN203127983U CN203127983U CN 201320082175 CN201320082175U CN203127983U CN 203127983 U CN203127983 U CN 203127983U CN 201320082175 CN201320082175 CN 201320082175 CN 201320082175 U CN201320082175 U CN 201320082175U CN 203127983 U CN203127983 U CN 203127983U
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- circuit
- lifting electromagnet
- short
- protection device
- lifting
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Abstract
The utility model belongs to a lifting electromagnet short-circuit protection device controlled by a programmable logic controller (PLC). The lifting electromagnet short-circuit protection device comprises a rectification transformer (1), a voltage transformer (3), a lifting electromagnet (4) and an excitation switch (8), and is characterized in that a hall current transformer (5) in a circuit system is connected with the lifting electromagnet (4), a three-phase bridge type full-control rectification circuit (2) and an EM analog-digital conversion module (6); the three-phase bridge type full-control rectification circuit (2) is connected with a triggering signal driving circuit (9); the triggering signal driving circuit (9) is connected with a PLC control module (7); and the PLC control module (7) is connected with the EM analog-digital conversion module (6). By the lifting electromagnet short-circuit protection device, when an excitation output circuit is in short circuit, electrical elements are effectively protected, so that the lifting electromagnet is more safe and reliable during lifting.
Description
Technical field
The utility model belongs to the electromagnet lifting appliance, particularly a kind of lifting electromagnet short-circuit protection of PLC control.
Background technology
Lifting electromagnet in use, take place to cause the electromagnet system situation that is short-circuited because of reasons such as collision or circuit qualitys through regular meeting, show as following accident phenomenon: the one, be not equipped with storage battery as the electromagnet system of backup power, will burn accidents such as fuse, silicon control, circuit; The 2nd, be equipped with the electromagnet system of storage battery as backup power, will burn the storage battery accident.Present domestic electromagnet industry does not all have the actv. safety method, and the equipment that has can increase a fuse at the energized circuit of electromagnet, or increases an air switch.These two kinds of ways all exist deficiency itself, and fuse takes place normally to open circuit sometimes, air switch can take off a mouthful disconnection because of reasons such as driving vibrations, thus all can not use, used more can the increase accident generation.
Summary of the invention
The objective of the invention is to overcome above-mentioned technical deficiency, provide the interactive sensor of a kind of employing Hall current to have measuring ability immediately, can block silicon controlled trigger signal at 5 milliseconds with interior, reach the lifting electromagnet short-circuit protection of the PLC control of protective effect.
The technical scheme that the utility model technical solution problem adopts is: a kind of lifting electromagnet short-circuit protection of PLC control; comprise rectifier transformer, voltage transformer, lifting electromagnet and field switch; it is characterized in that the Hall current transformer is connected with lifting electromagnet, three-phase full-bridge controlled rectifier and EM analog-to-digital conversion module in Circuits System; three-phase full-bridge controlled rectifier is connected with the energizing signal driving circuit; the energizing signal driving circuit is connected with the PLC control module, and the PLC control module is connected with the EM analog-to-digital conversion module.
The beneficial effects of the utility model are: actv. had been protected each electric elements when this utility model was short-circuited at the excitation output circuit, made lifting electromagnet safer reliable when the lifting operation.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 is the electrical principle block diagram of the lifting electromagnet short-circuit protection of PLC control.
Among the figure: the 1-rectifier transformer; The 2-three-phase full-bridge controlled rectifier; The 3-voltage transformer; The 4-lifting electromagnet; 5-Hall current transformer; The 6-EM analog-to-digital conversion module; The 7-PLC control module; The 8-field switch; 9-energizing signal driving circuit.
The specific embodiment
Embodiment; with reference to accompanying drawing; a kind of lifting electromagnet short-circuit protection of PLC control; comprise rectifier transformer 1, voltage transformer 3, lifting electromagnet 4 and field switch 8; it is characterized in that Hall current transformer 5 is connected with lifting electromagnet 4, three-phase full-bridge controlled rectifier 2 and EM analog-to-digital conversion module 6 in Circuits System; three-phase full-bridge controlled rectifier 2 is connected with energizing signal driving circuit 9; energizing signal driving circuit 9 is connected with PLC control module 7, and PLC control module 7 is connected with EM analog-to-digital conversion module 6.Rectifier transformer 1 is connected with three-phase full-bridge controlled rectifier 2 with the 380V power supply, and three-phase full-bridge controlled rectifier 2 is connected with lifting electromagnet 4, between voltage transformer 3 in parallel, voltage transformer 3 also is connected with EM analog-to-digital conversion module 6; PLC control module 7 connects field switch 8.
The principle of work of this utility model is: in case make the electromagnet excitation magnetic loop fault that is short-circuited because of certain reason; Hall current transformer 5 detects the signal that exciting current sharply increases after the short circuit immediately; and can deliver in the PLC control module 7 immediately; block three-phase full-bridge controlled rectifier 2 immediately by the trigging pulse (within 5 milliseconds, blocking silicon controlled trigger signal) of energizing circuit, reach each electric elements of protection and be not damaged.Short trouble can also be noted simultaneously, and demonstrate the short trouble of generation at corresponding output point.Now use at the scene, effect is very good, receives praises from customers.
Claims (1)
1. the lifting electromagnet short-circuit protection of PLC control; comprise rectifier transformer ⑴, voltage transformer ⑶, lifting electromagnet ⑷ and field switch ⑻; it is characterized in that Hall current transformer ⑸ is connected with EM analog-to-digital conversion module ⑹ with lifting electromagnet ⑷, three-phase full-bridge controlled rectifier ⑵ in Circuits System; three-phase full-bridge controlled rectifier ⑵ is connected with energizing signal driving circuit ⑼; energizing signal driving circuit ⑼ is connected with PLC control module ⑺, and PLC control module ⑺ is connected with EM analog-to-digital conversion module ⑹.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320082175 CN203127983U (en) | 2013-02-22 | 2013-02-22 | Lifting electromagnet short-circuit protection device controlled by programmable logic controller (PLC) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320082175 CN203127983U (en) | 2013-02-22 | 2013-02-22 | Lifting electromagnet short-circuit protection device controlled by programmable logic controller (PLC) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203127983U true CN203127983U (en) | 2013-08-14 |
Family
ID=48935981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320082175 Expired - Fee Related CN203127983U (en) | 2013-02-22 | 2013-02-22 | Lifting electromagnet short-circuit protection device controlled by programmable logic controller (PLC) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203127983U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876108A (en) * | 2014-02-28 | 2015-09-02 | 大连星航机电设备有限公司 | Lifting electromagnet control apparatus for accurately sucking and lifting single steel plate |
| CN104876109A (en) * | 2014-02-28 | 2015-09-02 | 大连星航机电设备有限公司 | Protection apparatus for overcurrent or short circuit generated during combination of multiple lifting electromagnets |
-
2013
- 2013-02-22 CN CN 201320082175 patent/CN203127983U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876108A (en) * | 2014-02-28 | 2015-09-02 | 大连星航机电设备有限公司 | Lifting electromagnet control apparatus for accurately sucking and lifting single steel plate |
| CN104876109A (en) * | 2014-02-28 | 2015-09-02 | 大连星航机电设备有限公司 | Protection apparatus for overcurrent or short circuit generated during combination of multiple lifting electromagnets |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20210222 |