DCS displays a black screen, but the on-site control system is normal. How to deal with it?

We can only do more inspections and restore DCS as soon as possible:lol If it doesn't work, we can only stop the car!

Start the emergency stop plan. If the on-site valves are all in the automatic state, don't worry, it's no problem. The instrument will deal with the cause of the black screen of the host computer as soon as possible, whether it is a problem with the power supply, software, or the computer itself. Your system may have a design flaw, and a few more operating computers will do the trick.

Our device (catalytic. Thermoelectric) have all encountered a black screen or severe screen shaking, mostly due to the aging of the host computer interface. As long as the on-site control instruments are normal, there is no need to panic. Strengthen the on-site control contact and let the instrument technician handle the display.

When the computer screen goes black, on-site inspections must be strengthened immediately, especially in key and dangerous parts. If there is more than one computer in the DCS and all the screens are black, it is best to adopt an emergency shutdown procedure. reason: The DCS power supply has at least one redundant channel (basically UPS power supply), and the data transmission network is also redundant. If all black screens appear, it usually won’t be resolved for a while. It's hard to tell if you only have one computer, but it's best to park for safety's sake.

First of all, don't be busy performing other operations. If there is an operating console, pay close attention to monitoring and do not adjust the valve position at will. Contact instrument duty personnel to handle the display. Second, if there is no second monitor, you can quickly contact the instrument personnel to handle the monitor. At this time, the host will not stop running, and the system will always run according to the original operating parameters. You can first find a computer monitor instead. Third, if there are no spare parts and it is impossible to purchase a DCS monitor, it can only be treated as an emergency shutdown. :( :L

Immediately carry out an emergency shutdown. This is a basic requirement for production control. If the leader refuses to stop, it is a violation of regulations.

You should stop for safety reasons. I guess it's a communication issue.

It shouldn't be that all DCS screens are black at the same time, right?

The normal incoming and outgoing materials between each system must be manually cut off on site, and the heating units of each system must be turned off. Each system must be kept in self-circulation until the DCS recovers. Inspections on pressure, temperature, and the operation of dynamic equipment must be strengthened on site to facilitate timely processing. In short, the site must be very busy and careful at that time.

If the system works well, usually nothing will happen, but it is best to treat it as an emergency stop and perform manual parking on site. It is best to have 1-3 DCS computers in reserve, and check the computers for viruses regularly (because my original unit found that someone used the USB interface to charge MP3 players and mobile phones, which caused poisoning).

It is very dangerous to park the car when the DCS screen is black, because nothing can be seen on the screen. How to park the car safely? Parking is not a steady state and is dangerous without human operation. Strengthening on-site inspections to prevent current problems is the correct answer, because during normal production, all valves and pumps are operating normally and are in a steady state. Although the DCS screen is black, the control system is still working normally. There is no problem. In case of an abnormality, the ESD of the system will be interlocked to ensure safe shutdown. However, the DCS black screen must be eliminated, no matter how much money is spent.

It is better to park the car. We once had an internal combustion due to this reason, and the apparent loss was millions, not counting the long period of parking.

First, calm down! If you usually conduct drills in this area, just follow the drills! Also, be sure to follow the operating procedures! External inspections have been strengthened.

There is no need to stop the car, just go to the engineering station to operate it immediately, and at the same time contact the relevant personnel to handle the DCS.

We also had the phenomenon mentioned by the original poster, but DCS later fixed it. It's like nothing happened. After I felt the black screen, I immediately checked the on-site valve position and primary meter indication to see if the valve position was disordered. If it is like what the original poster said, on the one hand, we need to strengthen inspections to ensure that the control valve is working normally. (If it does not work, change to manual or secondary line operation.) On the other hand, check the DCS system. If it is a minor problem, we can handle it immediately if we are sure it will be fixed in a short time. If it doesn't work, reduce the cycle or stop work. I feel that for some devices, the operator's skills are also very good. If the operator leaves the DCS and only uses one meter control and a decreasing volume cycle, it should be no problem to maintain the device for several hours. Today's operators rely too heavily on instruments. This is also a side effect of high automation. This post was last edited by dongliangsir on 2009-2-23 21:06 ]

There should be a problem with the computer display system, such as the driver of the graphics card, etc. Or the system settings are changed. It doesn't matter, monitors are generally installed redundantly now, and if one fails, the other can continue to be used. You can restart your computer and see

Nowadays, in the production of equipment, there is usually more than one computer in the operating room. If this happens, notify the squad leader and use computers from other positions to monitor the operations of this position. At the same time, report to the workshop and contact dispatch, contact the instrument for maintenance, and workshop personnel need to stop the vehicle according to the actual situation. in general: While controlling, remember to report.

If the system cannot be restored within a short period of time, it is safer to shut down the system urgently. Do not do anything you are not sure about.

If the DCS can be restarted, there should be no problem. I am afraid that there is a problem with the on-site processor or logic operation, and the only way to stop it is to manually shake the valve or press an emergency stop.

We have encountered DCS black screens before, and we immediately went to the site to check whether the valve position was normal. If the valve position was normal, it meant that it was just a system failure. Strengthen inspections and leave people in important parts to monitor important pressures and valve status. At the same time, we contacted DCS personnel to deal with it immediately. If it can be solved in a short time, normal production can be resumed. If it cannot be restored, emergency shutdown will be required.