GE IS200STAOH2AAA STAO Simplex Analog Output Terminal Board

Product Description: The IS200STAOH2AAA is a GE Speedtronic Mark VI simplex analog output termination board (STAO). It works together with the VAOA analog output pack, converting internal control signals into standard 4-20mA analog output signals for field actuators, control valves and positioners. It provides screw terminal wiring, signal filtering and transient suppression for turbine governing loops, fuel valves, IGV actuators and auxiliary process control signals in gas and steam turbine control cabinets. AAA denotes this specific hardware revision.

Features:

• Dedicated for GE Mark VI turbine control system, simplex non-redundant analog output termination
• Standard 4–20mA analog output channels for valve position command and process regulation
• Built-in EMC filtering and surge protection to suppress inductive load noise
• Screw terminal block + 37-pin D-sub connector for connecting VAOA pack
• Onboard LED indicators for channel status and fault diagnosis
• Eurocard form factor, plug-in installation on Mark VI backplane rack
• Convection cooling, designed for continuous long-run operation in power plant cabinet

Applications:

• Gas turbine fuel valve and inlet guide vane (IGV) control signal output
• Steam turbine governor valve, bypass valve analog command loop
• EX2100 generator excitation system analog regulation output
• Power plant boiler auxiliary fan and water valve control cabinet
• Oil & gas compressor turbine control spare replacement and maintenance

FAQ:

Q: What does STAO stand for?
A: STAO = Simplex Terminal Analog Output board, the analog output termination base for VAOA pack.

Q: Can IS200STAOH2AAA run on Mark VIe racks?
A: No, it belongs to the classic Mark VI platform, incompatible with Mark VIe IONet backplane and I/O architecture.

Q: Is it interchangeable with duplex analog output terminal boards?
A: No, this is simplex version; duplex board has different channel layout and backplane pin definition.

Q: Is IS200STAOH2AAA still in production?
A: Mark VI series is obsolete. Available stock is NOS surplus or fully tested refurbished boards.