Bailey 820 Line of controller cards, 6624520A1 Analog Memory.
As part of the Bailey 820 Line, the Analog Memory module performs specific tracking, holding, and signal-retention operations:
- Signal Retention: It captures and holds an analog voltage level (representing a process variable like pressure, temperature, or flow) when triggered.
- Track-and-Hold Capability: It acts as a sample-and-hold circuit, essential for smooth manual-to-automatic control transfers and preventing signal bumps.
- Hardware Profile: Because this is vintage industrial automation hardware, it consists of discrete electronic components (such as operational amplifiers and high-quality capacitors) mounted to a dedicated plugin card