Safety Controller
Safety controllers are typically a type of field device used to perform the safety critical function. Safety controllers often support the deployment of custom programs/logic, similar to a PLC, but can also be tailored for sector specific functions/applications. The safety controllers typically utilize redundant hardware and processors to ensure they operate reliably if a component fails.
Related Assets
| Name | Sectors | Description |
|---|---|---|
| Safety Instrumented System (SIS) controller | General |
SIS controllers are used to "take the process to a safe state when predetermined conditions are violated" [1] through the reading of sensor data and interaction with digital/physical control surfaces. These devices are oftentimes located on programmable embedded devices running specialized RTOS or other embedded operating systems. |
| Emergency Shutdown Systems (ESD) controller | General |
Emergency Shutdown System controllers are used to read sensor values and interact with control surfaces to return the system "to a safe static condition so that any remedial action can be taken". [2] |
| Burner Management Systems (BMS) controller | General |
Burner Management System controllers are used to interact with sensors and control surfaces to maintain safe operating conditions for the burner. These can include safely starting-up and managing the main flame, controlling and monitoring the burning conditions, and safely initiating planned or unplanned shutdown sequences. |
