Читать книгу Automation of Water Resource Recovery Facilities - Water Environment Federation - Страница 68

In addition to the I/O list, a monitored variables list should be compiled in a table (see Table 3.2 for an example). The table should note each variable’s anticipated range, whether a setpoint is required, and whether it is fixed or adjustable (all setpoints should be made adjustable unless otherwise specified by the equipment manufacturer, warranty, or other applicable authority). The table should note the initial setting of each setpoint, if available, who can change it (e.g., operator, supervisor, process engineer, maintenance technician, facility superintendent, system administrator, etc.), and whether it should be password protected.