Emergency stop control method of cold rolling continuous processing line
A control method and processing line technology, applied in metal rolling, metal rolling, electrical program control, etc., can solve problems such as insufficient emergency stop control and inability to control emergency stop.
Active Publication Date: 2015-04-15
SHANGHAI BAOSIGHT SOFTWARE CO LTD
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Problems solved by technology
However, emergency shutdown at the L1 level of the cold rolling continuous production line cannot be controlled
In addition, the utility model is insufficient for the emergency stop of the cold rolling continuous production line and the emergency stop control of different types of transmissions in the cold rolling continuous production line
Method used
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[0025] first reference figure 1 as shown, figure 1 The emergency stop control method of the cold rolling continuous processing line of the present invention is disclosed. The emergency stop control method is realized based on the main line PLC and the emergency stop circuit. For the transmission equipment that controls speed and tension on the production line, the emergency stop control method includes:
[0026] S11. The emergency stop circuit receives an emergency stop request, and the emergency stop request is directed to an emergency stop area of the transmission equipment controlling speed and tension on the cold rolling continuous processing line.
[0027] S12. Send the emergency stop request to the mainline PLC, and the mainline PLC generates an emergency stop deceleration slope, and sends it to each transmission device on the production line in the emergency stop area through the DP network. For the emergency stop control of an area of the cold rolling continuous p...
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The invention discloses an emergency stop control method of cold rolling continuous processing lines. The emergency stop control method is realized based on a main line PLC (programmable logic controller) and an emergency stop loop. The emergency stop control method comprises step of realizing the emergency stop of various transmission devices according to a transmission device and an off-line transmission device, wherein the transmission device on a production line is used for controlling the speed and the tension; and the off-line transmission device is not used for controlling the speed and the tension. The method comprises the steps that through an emergency stop request of an emergency stop area, a speed which is reduced according to a speed reduction gradient is generated by the main line PLC, and is transmitted to the transmission device at the emergency stop area on the production line by a network; speed of the transmission device is reduced in the same speed reduction gradient; the main line PLC monitors the speed reduction parameter of the production line within the emergency stop area; and if the speed reduction parameter is normal, a transmission emergency stop control character is transmitted to each transmission device when the feedback speed is zero; if the speed reduction parameter is abnormal, a transmission emergency stop control character is transmitted to each transmission of the emergency stop area through a network; the transmission emergency stop control character is directly controlled by an emergency stop time-delay relay through the emergency stop loop; and after receiving the transmission emergency stop control character, the transmission device decelerates according to the emergency stop gradient inside the transmission and then stops.
Description
technical field [0001] The invention relates to the control of a cold-rolling continuous processing line in the metallurgical industry, in particular to an emergency stop control method of the cold-rolling continuous processing line. Background technique [0002] The emergency stop of the cold-rolled continuous production line is a safe mode. When an emergency occurs, it is necessary to ensure that the continuous production line in operation stops at the fastest speed, without stopping, or the equipment in motion stops immediately, so as to ensure the safety of the equipment, The harm to the person is reduced to a minimum. [0003] The patent number is 02275315.X, and the utility model patent titled "Control Device for Emergency Stop of Rolling Mill" discloses an automatic control device for emergency stop of rolling mill. The lock trip circuit and the rolling mill electric transmission control circuit controlled by the relay contact K3 in the interlock trip circuit are com...
Claims
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IPC IPC(8): B21B33/00G05B19/05
Inventor 章亚青张菊林邓军陈振国
Owner SHANGHAI BAOSIGHT SOFTWARE CO LTD