GE IS400STAIS2AED | Simplex Relay Output Terminal Board |

Description

GE IS400STAIS2AED Mark VIe Simplex Analogue Input/Output Terminal Board

Product Overview

The GE IS400STAIS2AED is a high-performance simplex analogue input/output terminal board designed for GE’s Mark VIe Speedtronic™ turbine control system, a cornerstone of power generation, oil and gas, and industrial automation. As a critical interface component, this board provides 8-channel isolated analogue input/output with high-resolution signal processing, enabling precise control and monitoring of field devices such as pressure transmitters, temperature sensors, and process valves in safety-critical applications. The IS400STAIS2AED integrates seamlessly with Mark VIe I/O packs like IS220YDAIH1A and IS420YDAIH1B, translating analog signals from field instruments into digital data for the control system and vice versa.

Engineered for ruggedness, the IS400STAIS2AED features a DIN rail-mountable design with pluggable Euro-style terminal blocks, allowing for easy installation and maintenance in compact control cabinets. Its metal enclosure ensures durability in harsh environments with temperatures ranging from -40°C to +70°C, while 500V DC isolation between channels and ground safeguards against electrical interference. The board supports optional daughterboards like IS400WROBH1A, which adds fused power distribution and dedicated power channels for enhanced functionality in complex systems.

Within the Mark VIe ecosystem, the IS400STAIS2AED acts as a bridge between the control processor and field devices, delivering reliable analog signal conditioning with diagnostic feedback. Compliance with UL 508 and IEC 61010 standards underscores its reliability in regulated industrial settings, where precision and uptime are paramount.

Technical Specifications

Main Features and Advantages

High-Precision Signal Conditioning: The IS400STAIS2AED offers 8-channel isolated analog I/O with 16-bit resolution, ensuring accurate signal transmission for critical processes like turbine temperature monitoring and valve positioning. Its high-speed signal processing minimizes latency, critical for real-time adjustments in power generation and oil/gas applications.

Industrial-Grade Durability: With a -40°C to +70°C operating range and robust metal enclosure, the IS400STAIS2AED withstands extreme temperatures, vibration, and corrosive atmospheres—common in refineries and chemical plants. Its design resists dust and moisture, maintaining performance in environments where traditional terminal blocks might fail.

Seamless Mark VIe Integration: The board is specifically engineered to pair with Mark VIe I/O modules like IS220YDAIH1A (analog input) and IS420YDAIH1B (analog output), creating a cohesive analog control system. This compatibility simplifies retrofits, as existing Mark VIe users can integrate the IS400STAIS2AED without extensive reconfiguration.

Real-Time Diagnostics: LED indicators on the I/O pack provide real-time status of channel activity and fault conditions (e.g., signal drift), enabling technicians to quickly identify issues during maintenance. This reduces troubleshooting time, minimizing downtime in 24/7 operations like turbine control.

Flexible Power Options: With support for the IS400WROBH1A daughterboard, the IS400STAIS2AED can be upgraded to include fused power distribution for the first four channels and dedicated power for the fifth, enhancing safety and reliability in critical applications like emergency shutdown (ESD) systems.

Application Fields

The GE IS400STAIS2AED is indispensable in industries relying on precise analog control for turbine and industrial systems:

• Power Generation: In thermal, combined-cycle, and nuclear plants, it connects turbine temperature sensors, steam pressure transmitters, and generator excitation systems to Mark VIe controllers. Its high-resolution analog signals ensure accurate load balancing and grid synchronization—critical for preventing unplanned shutdowns.
• Oil and Gas: Offshore platforms and refineries use the IS400STAIS2AEDto link compressor anti-surge valves, pump speed controllers, and process analyzers to control systems. Its rugged design withstands salt spray and vibration, maintaining reliability in harsh offshore conditions.
• Industrial Manufacturing: Chemical plants and paper mills deploy the board to manage mixer speed controls, conveyor belt tensioners, and process valve actuators. Its high channel count simplifies wiring for complex production lines, reducing installation costs.
• Marine Propulsion: Shipboard turbine systems use the IS400STAIS2AEDto connect engine throttle servos, propeller pitch controls, and rudder actuators. Its compact size fits in limited shipboard space, while its durability resists the effects of constant motion.

Related Products

1. GE IS220YDAIH1A: An analog input I/O pack that pairs with the IS400STAIS2AEDto process high-precision temperature and pressure signals in turbine control systems.
2. GE IS420YDAIH1B: An analog output I/O pack that complements the IS400STAIS2AEDfor systems requiring both input and output analog control.
3. GE IS400WROBH1A: A daughterboard that adds fused power distribution to the IS400STAIS2AED, enhancing safety in high-risk applications like ESD systems.
4. GE IS410SRLYS2A: A simplex relay output terminal board that integrates with the IS400STAIS2AEDfor hybrid analog-discrete control systems.
5. GE IS220PAICH2A: A redundant power supply that ensures uninterrupted 24V DC to the IS400STAIS2AEDand other Mark VIe components.
6. GE IS200TDBSH2A: A terminal block accessory that provides additional signal conditioning and isolation for hazardous locations.

Installation and Maintenance

Pre-installation preparations: Ensure the DIN rail is securely mounted and grounded, with adequate space for the IS400STAIS2AED and any daughterboards. Verify the 24V DC power supply meets voltage tolerances (±10%). Align the board with the rail, secure it with clips, and torque terminal screws to 0.8–1.0 N·m for reliable connections. Label wires according to the wiring diagram and test continuity before connecting to field devices.

Maintenance suggestions: Conduct monthly visual inspections to check for loose terminals, damaged wires, or LED warnings. Clean dust from the board using compressed air to prevent overheating. Quarterly, verify isolation between channels with a megohmmeter to ensure no degradation. When replacing the IS400STAIS2AED, label wires before removal to simplify reinstallation, and retest all channels post-installation to confirm proper operation. For daughterboard-equipped systems, inspect fuses in the IS400WROBH1A every six months.

Product Guarantee

Our company offers a one-year quality warranty service for the IS400STAIS2AED, covering hardware malfunctions not caused by human factors. During the warranty period, if the product shows abnormal performance or functional failure, we will provide replacement services. In addition, for discontinued models or urgent demands, relying on our global supply chain network, we can quickly respond to customers’ procurement needs for scarce spare parts, and provide reliable services to support the continuous and stable operation of industrial systems.

As a leading import and export trade distribution company with 17 years in the industrial control industry, we stock a large inventory of both common and hard-to-find models, ensuring we meet urgent spare part needs. Our expertise in GE and other major brands allows us to deliver reliable support for your automation systems.

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