Bailey 820 Line of controller cards, 6624151J2C Summer + Proportional + Integral.
The Bailey 820 6624151J2C is a Summer + Proportional + Integral (PI) control loop module belonging to the legacy Bailey 820 process control system architecture.
Module Identification & Functions
- Core Function: The module acts as an analog computational board that performs summing mathematics alongside proportional and integral control loop functions. It calculates the sum of input signals, applies a proportional multiplier gain, and incorporates time-based integration to eliminate steady-state system errors.
- System Platform: Part of the classic Bailey Controls 820 Line (now under ABB Bailey). This platform uses a traditional "split" modular architecture widely implemented in power stations and heavy industrial boiler modulating control frameworks.