Digital guide
You are here:
GE DS2020BRCAG3
-
Product Identity: A legacy analog input/output module for the GE Speedtronic Mark V Turbine Control System.
-
Functional Overview: Bridges the gap between the digital controller and analog field devices. It converts analog process variables (e.g., temperature, pressure, flow) into digital words for the controller and converts digital commands back into analog signals to position control valves.
Detailed content
-
Technical Specifications:
-
Channels: 4 Analog Inputs (4–20 mA) and 4 Analog Outputs (4–20 mA).
-
Resolution: 16-bit A/D and D/A conversion.
-
Accuracy: ±0.1% of full scale.
-
Isolation: Optical isolation between inputs/outputs and the VME backplane.
-
-
Design Features: Heavy-duty construction typical of Mark V hardware, designed for extreme reliability. Uses precision resistors and laser-trimmed components to maintain stability over decades of service.
-
Criticality: Failure of this module can lead to inaccurate control valve positioning, potentially causing turbine inefficiency or trips. Spare modules should be stored in anti-static bags in a climate-controlled environment.
