Description
1. Product Title
GE IS200STAOH2AAA – Simplex Analog Output Terminal Board
2. Product Overview
The IS200STAOH2AAA is a high-reliability Simplex Analog Output (STAO) terminal board developed by General Electric for the Mark VI Control System. Its primary function is to serve as the physical interface between the control system’s internal digital logic and the plant’s field devices. The IS200STAOH2AAA receives digital signals from the I/O processor and converts them into 0-20 mA or 4-20 mA analog signals to drive actuators, valve positioners, and other modulating control elements. By providing a rugged termination point for field wiring, it solves the industrial challenge of maintaining signal integrity and electrical isolation in high-interference environments, ensuring precise control over critical process variables.
3. Technical Specifications
- Brand: General Electric (GE)
- Model: IS200STAOH2AAA
- Warranty: One Year
- Condition: 100% New & Original
- Series: Mark VI
- Channels: 8 Simplex Analog Output Channels
- Signal Range: 0-20 mA or 4-20 mA (Software configurable)
- Maximum Load: 500 Ohms per channel
- Isolation: Galvanic isolation between field wiring and control logic
- Terminations: Two barrier-type terminal blocks (24 terminals each)
- Operating Temp: -30°C to +65°C (-22°F to +149°F)
4. Key Features & Benefits
- Simplex Configuration: Optimized for cost-effective, non-redundant applications where standard reliability is required for auxiliary process control.
- Passive Design: As a passive terminal board, the IS200STAOH2AAA minimizes heat generation within the cabinet, contributing to a longer MTBF (Mean Time Between Failures) for the entire control rack.
- High-Density Connectivity: Supports up to 8 independent analog outputs on a compact footprint, allowing for efficient use of cabinet space.
- Robust Terminal Blocks: Features industrial-grade screw terminals that provide secure, vibration-resistant connections for field cables ranging from 12 to 22 AWG.
5. Application Scenarios
- Valve Actuation: Commonly used in turbine control systems to provide the 4-20 mA demand signal for hydraulic or pneumatic valve positioners.
- Remote Metering: Deployed to drive remote analog gauges or chart recorders in control rooms for real-time visualization of process status.
- Variable Frequency Drive (VFD) Speed Reference: Utilized in industrial pump and fan control to provide the speed reference signal to VFDs based on PID loop calculations.
6. Frequently Asked Questions (FAQ)
- Q: What is the primary function of the IS200STAOH2AAA ?
- A: It provides the physical termination and signal routing for 8 analog output channels within the GE Mark VI control system.
- Q: Can the IS200STAOH2AAA be used in a TMR (Triple Modular Redundant) system?
- A: No, the STAO is a Simplex board. For TMR configurations, the TTAO (Triple Terminal Analog Output) board is typically required.
