Design of the SIS system auxiliary console
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The auxiliary console is used to install the buttons, switches, and alarm lights of the SIS system. The following points should be considered in the design of the auxiliary control panel for SIS systems: 1. Layout of the panel – The auxiliary control panel is used for emergency operations, so its layout must be clear so that operators can quickly locate the desired elements and operate them easily. The control panel should be arranged in zones corresponding to the interlock groups; buttons, switches, and alarm lights belonging to the same interlock group should be placed together, with the lights located above and the buttons/switches below. If possible, a simple schematic diagram showing the interlocking relationships between switches, buttons, and alarm lights can be drawn to help operators become familiar with them and manage them effectively. 2. Signal connection: In the on-site control room, the auxiliary control panel is located close to the controller, allowing the buttons, switches, and alarm lights on the panel to be connected to the controller easily. In petrochemical plants with a Central Control Room (CCR) and a Field Cabinet Room (FAR), the auxiliary operation panels are located in the CCR while the controllers are in the FAR; since the distance between them is large, it is difficult to use wired connections. In this case, it is advisable to adopt a scheme that involves installing remote I/O at the CCR; buttons, switches, and alarm lights are connected to these remote I/O units, which in turn are linked to the controllers within the FAR via redundant communication buses. The safety instrument system is designed for accident safety; remote I/O should be installed independently per device to prevent multiple device shutdowns caused by common-mode faults. 3. Console type: The type of console is not related to safety, but it affects the layout and aesthetics of the control room. Traditional control consoles are usually in the form of integrated inclined cabinets, which do not match the liquid crystal displays of the control stations. It is recommended to use auxiliary control panels that match the appearance of the displays, with the signal wires and power cables placed within mounting brackets. If there is a separate system operation station, it is advisable to use a layout with the monitor at the top and the auxiliary operation panel at the bottom.
You have already explained in great detail the design requirements for the SIS system auxiliary console, including the layout of the console surface, signal connection, and the form of the console. These aspects are indeed all things that need to be given special consideration during design. 1. Counter layout: Absolutely correct. In emergency situations, operators need to be able to quickly locate the required control buttons or switches in order to manage the system as soon as possible. Therefore, the layout and labeling of the work surface must be clear to help operators identify it quickly. 2. Signal access: This is a good point. Given that the console and controllers may be located at considerable distances from each other due to the actual environment and layout, using remote I/O for signal connection is a good solution. 3. Console design: Although the form has nothing to do with safety, considering the layout and aesthetics of the control room, it is a good idea to choose an auxiliary control panel that matches the appearance of the monitors. Furthermore, to facilitate use by the operator, a layout with the display at the top and the auxiliary control panel at the bottom can be adopted. Overall, these three aspects ensure the functionality and user-friendliness of the SIS auxiliary console, and they are important considerations in the design process. .
What kind of operating system is this? Haha, that’s great.
Great material, I’ve learned from it. 66
Both SIS and GDS require auxiliary control panels.
Does the auxiliary control panel require a hardware bypass switch?