Product Overview

The GE IS200STAOH2AAA is a Simplex Analog Output Terminal Board designed for use in the Mark VIe control system. It provides reliable analog output signals for controlling field devices such as actuators and positioners. The board supports 8 channels of 0-20 mA current output, with a typical configuration of 4–20 mA for most applications. This terminal board serves as a direct interface for analog output wiring, allowing smooth and accurate operation of control systems in industrial automation.

The IS200STAOH2AAA is commonly used in systems that require a single control point, offering a cost-effective solution for non-redundant or distributed I/O configurations. For applications requiring TMR (Triple Modular Redundancy), other terminal board models like the TBTCH would be more appropriate.

Key Technical Specifications

1. Output Channels & Performance
   The IS200STAOH2AAA supports 8 simplex analog output channels to drive field devices in a controlled manner:

• Signal Range: 0–20 mA current output, commonly configured as 4–20 mA for control applications.

• Maximum Load Resistance: Supports up to 900 Ω, allowing connection to a wide variety of field devices.

• Resolution: The 16-bit Digital-to-Analog Converter (DAC) offers high precision for reliable control of turbine valves and other actuators.

• Accuracy: Calibrated to ±0.5% of the full-scale range, ensuring consistent and accurate performance over time and temperature.

2. Electrical & Wiring
   The IS200STAOH2AAA offers efficient wiring and reliable electrical connection:

• Field Wiring: Supports two 24-point barrier-type or box-type terminal blocks for easy connection of field wires.

• Wire Size: Accepts AWG #18 to #14 (0.8 to 2.0 mm²) wire sizes, ensuring compatibility with standard field wiring.

• Interface: The board connects to the IS220PAOC I/O pack via a high-density 37-pin D-type connector, simplifying installation and integration into the control system.

3. Protection & Diagnostics
   The IS200STAOH2AAA is designed with built-in protection and diagnostics to safeguard system integrity:

• Surge Protection: Each output channel includes Metal Oxide Varistors (MOVs) and filtering to protect against electrical noise and high-voltage transients, which can damage sensitive equipment.

• Suicide Relay: Each channel is equipped with a "suicide" relay, which can disconnect the output if the I/O pack detects hardware failures or internal malfunctions, ensuring system safety.

• Loop Feedback: The board allows real-time verification of the current loop, providing the I/O pack with feedback to measure the actual current flowing in the loop.

System Configuration Comparison

Environmental Specifications

The IS200STAOH2AAA is built to endure harsh industrial conditions:

• Operating Temperature: -30°C to +65°C (—22°F to +149°F), providing stable performance in varying temperature environments.

• Storage Temperature: -40°C to +85°C to withstand extreme temperature fluctuations during storage.

• Humidity: Rated for 5% to 95% non-condensing humidity, making it suitable for diverse industrial environments.

• Conformal Coating: Revision H2AAA indicates that this board is equipped with conformal coating, which provides protection against moisture, dust, and corrosive chemicals, ensuring long-lasting reliability.

• Pollution Degree: Level 2 (standard industrial indoor environment), suitable for typical industrial automation environments.

Applications

The IS200STAOH2AAA is ideal for use in applications where reliable analog control signals are required:

• Industrial Automation: Controls actuators, positioners, and other critical field devices in turbine control systems.

• Power Plant Systems: Provides precise control over field devices, ensuring efficient turbine and power generation operation.

• Distributed I/O Systems: Perfect for applications where cost-effective, single-point control is necessary without redundancy.

FAQ

Q: What devices can the IS200STAOH2AAA board control?
A: The IS200STAOH2AAA is used to control devices that require 0–20 mA current loop signals, such as actuators, valves, and positioners in industrial control systems.

Q: Can I use this board in a redundant system?
A: The IS200STAOH2AAA is designed for simplex configurations. For TMR (Triple Modular Redundancy) systems, a different board model, such as TBTCH, would be required.

Q: How does the IS200STAOH2AAA ensure reliable performance?
A: The board includes surge protection, loop feedback, and suicide relays to ensure safe and reliable operation of field devices, even in the presence of electrical noise or faults.

Q: What is the temperature range for the IS200STAOH2AAA board?
A: The board operates in temperatures ranging from -30°C to +65°C (—22°F to +149°F), ensuring reliability in a wide range of industrial environments.