CN217133555U

CN217133555U - Emergency stop serial control system of control cabinet

Info

Publication number: CN217133555U
Application number: CN202123240862.6U
Authority: CN
Inventors: 张金燕
Original assignee: Hyperfusion Intelligent Technology Shanghai Co ltd
Current assignee: Hyperfusion Intelligent Technology Shanghai Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-08-05
Anticipated expiration: 2031-12-22

Abstract

The utility model discloses an emergency stop control system that concatenates, the outside emergency stop button of addding including control cabinet, a plurality of switch boards and system end, the control cabinet and install respectively on the control cabinet and be used for under the emergency state stop operation's the urgent stop button of control cabinet and switch board urgent stop button, the outside emergency stop button of addding is connected to the end control cabinet, and whole control system emergency stop function establishes ties, and any emergency stop button triggers, and whole system control cabinet effectively stops the output safely. The utility model discloses a circuit control system has self-checking and redundant effect, synthesizes a plurality of independent safety relay simulation into the function of a safety relay unit module, has realized the reliable control of whole switch board system scram, has promoted the security level of switch board system greatly.

Description

Emergency stop serial control system of control cabinet

Technical Field

The utility model relates to a circuit safety control field especially relates to a switch board scram concatenation control system.

Background

The lifting control of the electric hoist is realized by using the control cabinets, because each control cabinet only has a plurality of paths of output, and the performance site usually has dozens of hoisting points, and needs several or dozens of control cabinets to be used simultaneously, so that a system is formed, an operator is required to press any emergency stop button no matter the operator uses an externally connected emergency stop button, an operation table emergency stop button or an emergency stop button on the surface of the control cabinet, and the reliable and safe stop control of the whole system can be realized. The internal circuit, the function and the appearance of each control cabinet are completely consistent, the safety relay module unit is adopted in a single control cabinet, the safety level can reach SIL3, and the emergency stop function of the whole control system still has a high safety level and good reliability.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a switch board scram concatenates control system to realize the reliable control of whole switch board system scram, promote the security level of switch board system.

For solving the technical problem, the utility model provides a switch board emergency stop control system that concatenates, the emergency stop button of setting up including control cabinet, a plurality of switch boards and system end, the control cabinet and install respectively on the control cabinet and be used for under the emergency condition emergency stop button of shutdown control cabinet and switch board emergency stop button, the outside is set up emergency stop button is connected to terminal switch board, and arbitrary emergency stop button triggers in the emergency stop function, and the entire system switch board stops the output.

Furthermore, the console emergency stop button and the emergency stop button are two normally closed contacts which are connected in series.

Further, the control cabinet is provided with a safety loop.

Furthermore, the console emergency button is connected in series with the first console control cabinet, and the control cabinet emergency stop button is connected in a safety loop of the control cabinet.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

the utility model discloses a circuit control system has self-checking and redundant effect, synthesizes a plurality of independent safety relay simulation into the function of a safety relay unit module, has realized the reliable control of whole switch board system scram, has promoted the security level of switch board system greatly.

Drawings

Fig. 1 is a schematic view of the overall structure of an embodiment of the emergency stop tandem control system of the control cabinet of the present invention;

FIG. 2 is a schematic diagram of a main circuit structure of a single control cabinet of the emergency stop tandem control system of the control cabinet of the present invention;

fig. 3(a) and fig. 3(b) are schematic structural diagrams of a control cabinet safety circuit of the control cabinet emergency stop tandem control system of the present invention;

fig. 4 is a schematic diagram of a circuit connection structure of the emergency stop tandem connection control system of the control cabinet of the present invention.

Detailed Description

The control cabinet scram series control system of the present invention will now be described in greater detail with reference to the schematic drawings, in which preferred embodiments of the present invention are shown, it being understood that those skilled in the art may modify the invention described herein while still achieving the advantageous effects of the present invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1, the embodiment of the utility model provides a switch board emergency stop control system that concatenates, including control cabinet 1 and a plurality of switch board 2, control cabinet 1 and install respectively on the switch board 2 and be used for under the emergency stop operation urgent stop button 3 of control cabinet and switch board urgent stop button 4, the outside is add urgent stop button 5 is connected to terminal switch board, and arbitrary urgent stop button triggers in the emergency stop function, and the entire system switch board stops output.

The console emergency button 3 and the emergency stop button 5 are two normally closed contacts connected in series. In this embodiment, the console emergency button 3 and the emergency stop button 5 are two normally closed contacts connected in series, and as a redundancy effect, when the emergency stop switch is pressed down, even if a pair of contacts are adhered, the emergency stop can still be effectively triggered, and the safety and the reliability of the control system are effectively improved.

The control cabinet comprises a main loop and a safety loop. In the embodiment, the main loop is used for realizing the lifting control of the electric hoist, and the safety loop controls the on-off of the main loop through the on-off of the safety relay, namely the safety control of the main loop is realized through controlling the high voltage through the low voltage.

The control cabinet emergency button is connected to the first control cabinet, and the control cabinet emergency button is connected to the control cabinet safety loop. In the embodiment, when one emergency button is pressed down, emergency closing of all control cabinets can be realized, and the operation safety of the control cabinets is effectively ensured.

The following is a list of preferred embodiments of the control cabinet emergency stop serial connection control system to clearly illustrate the contents of the present invention, and it should be clear that the contents of the present invention are not limited to the following embodiments, and other modifications by conventional technical means of those skilled in the art are also within the scope of the idea of the present invention.

The embodiment of the utility model provides a switch board scram concatenation control system's application method, specific circuit theory of operation as follows:

as shown in fig. 2, the circuit is a main loop of a single control cabinet, and the safety level of the single control cabinet can reach SIL 3. Fig. 3(a) and 3(b) show the safety loop of the control cabinet, wherein the contactors of the safety loop are KM1 and KM 2. Whole safety circuit adopts 24VDC power supply, and wherein, K7 is safety relay unit module, and the brand of adoption is PILZ, and the model is: PNOZ X2.8P. Relays K1, K2, K3, K4, K6 and K8 in FIG. 2 are safety relays, and the brand name adopted is omRon. The types of K1, K3, K4 and K8 are as follows: the model numbers of G7SA-2A2B, K2 and K6 are G7SA-5A 1B. The emergency stop series connection between the control cabinets is connected with a higher control cabinet or a control operation platform through a port in a table 1, and is connected with a lower control cabinet or an emergency stop button through a port in a table 2.

TABLE 1 scram Serial Port

Serial number	Name (R)
		1	EStop_OUT+
2	EStop_OUT-
		3	EStop_REOUT+
4	EStop_REOUT-

TABLE 2 scram tandem Port

When a 24V power supply loop of each control cabinet in the system is normal, the safety relay supplies power normally, emergency stop buttons in the system are all in a release state, the safety relays in the control cabinets are in a normal working state, the working state at this time is that K1 and K8 relay coils are electrified, K1.1 and K1.2 normally-open contacts are closed, K8.1 and K8.2 normally-open contacts are closed, K2 and K6 coils are electrified, K1 and K8 relay coils are electrified, K1.3 and K1.4, K8.3 and K8.4 normally-closed contacts are closed again, K2.2 and K6.2 normally-open contacts are closed, K3 and K4 relay coils are electrified, so that KM1 and KM2 coils are electrified, and a primary loop link of the control cabinet supplies power normally.

When one control cabinet safety relay works abnormally, the emergency stop signal connected in series in the whole system is equivalent to be abnormal, and all the control cabinets have no power supply output.

Besides ensuring that the status of each control cabinet in the system is equal and the connection application is not performed primarily or secondarily, the following advantages are provided:

(1) the scram link signals are connected in series through the relays, and a certain control distance can be increased.

(2) The signal connection of the emergency stop button adopts dual redundancy, so that the reliability is increased.

(3) The melting point occurs when one of the normally closed contacts of the safety relay K1 or K8 is disconnected, the redundancy effect is realized, the coil loop of the relay K3 and the coil loop of the relay K4 can not be conducted, the coil of the KM1 and the coil of the KM2 can not be electrified, the power supply of the console is abnormal, the console can know which console is abnormally supplied with power through the normally open contact series signal detection loop of the two contactors of the KM1 and the KM2 and the communication loop, and the power supply cut-off control of the whole system is realized. When the melting point problem is not solved, and the system is powered on for use next time, the K1 or K8 cannot be closed due to the fact that the normally open contact is forcibly guided, the coil loop of the relay K3 and the relay K4 cannot be conducted, the coil KM1 and the coil KM2 cannot be powered on, and the whole system cannot be powered on.

(4) When one of the normally open contacts K2 and K6 is at a melting point, due to a dual redundant loop, the K3 and K4 coils still lose power, the KM1 and KM2 coils cannot get power, the console supplies power abnormally, the console knows which console is abnormally supplied through a signal detection loop and a communication loop in which the normally open contacts of the KM1 and KM2 are connected in series, so that the whole system power supply cut-off control is realized, and when the console is started and powered up next time, if the melting point problem is not solved, the normally closed contacts of K2 and K6 are disconnected, the K1 coil and the K8 coil still lose power, the K2 and the K6 coil are abnormally supplied, the K3 and K4 relay coil loops cannot be conducted, the KM1 and KM2 coils cannot get power, and the whole system still cannot supply power.

To sum up, the utility model discloses a circuit control system has self-checking and redundant effect, synthesizes a plurality of independent safety relay simulation into the function of a safety relay unit module, has realized the reliable control of whole switch board system scram, has promoted the security level of switch board system greatly.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a switch board emergency stop control system that concatenates, its characterized in that, includes the emergency stop button that the terminal of control cabinet, a plurality of switch boards and system was add, the control cabinet and install the urgent stop button of control cabinet and the urgent stop button of switch board on the switch board respectively, the outside is add the emergency stop button is connected to terminal control cabinet, and arbitrary emergency stop button triggers in the emergency stop function, and the whole system switch board stops the output.

2. The control cabinet emergency stop tandem control system of claim 1, wherein the console emergency stop button and the emergency stop button are two normally closed contacts in tandem.

3. The control cabinet emergency stop tandem control system of claim 1, wherein the control cabinet is provided with a safety loop.

4. The control cabinet emergency stop series control system according to claim 1, wherein the console emergency stop button is connected in series with the first control cabinet, and the control cabinet emergency stop button is connected in a safety loop of the control cabinet.