GE IS420YAICS1B   IS220PPRFH1A  Analog Input/Output (I/O) Pack Module

The GE IS420YAICS1B is a high-performance analog input/output (I/O) pack module engineered for GE’s Mark VIe Speedtronic Turbine Control System, serving as a critical interface between field sensors, actuators, and the central controller in industrial automation.

Designed to process both analog inputs (e.g., temperature, pressure) and outputs (e.g., valve position commands), this module ensures precise data conversion and real-time communication, making it indispensable for gas turbines, steam turbines, and rotating machinery in power generation, oil and gas, and heavy manufacturing.

As part of the Mark VIe distributed architecture, the GE IS420YAICS1B features 16 analog input channels (4–20 mA, 0–10 VDC) and 4 analog output channels (4–20 mA), with 1500 Vrms galvanic isolation between channels to eliminate electrical interference.

Its 32-bit microprocessor executes signal conditioning—including filtering and linearization—at sub-millisecond speeds, ensuring accurate data for control loops.

The module’s compact 3U VME form factor (228.6 mm × 101.6 mm × 165.1 mm) and rugged construction—triple-layer conformal coating, IP20 enclosure—enable operation in harsh environments (-30°C to +65°C) with high vibration, humidity, and chemical exposure.

IS420YDOAS1B

In automation systems, the GE IS420YAICS1B acts as the bridge between field devices and the Mark VIe controller, translating sensor data into actionable commands for turbine governors, compressor anti-surge valves, and generator excitation systems.

Its dual 100 Mbps Ethernet ports (IONET protocol) support redundant communication, ensuring uninterrupted data flow in safety-critical applications.

Compatibility with IS230TCISH6C terminal boards allows deployment in hazardous locations (Class I, Division 2), adhering to ATEX and IECEx standards.

The GE IS420YAICS1B’s hot-swappable design and front-panel diagnostics (Power, Run, Fault LEDs) simplify maintenance, solidifying its role as a reliable workhorse in mission-critical operations.

Technical Specifications

Parameter Name    Parameter Value

Product Model    GE IS420YAICS1B

Manufacturer    General Electric (GE)

Product Type    Analog Input/Output (I/O) Pack Module

Series    Mark VIe Speedtronic Turbine Control System

Input Channels    16 analog inputs (4–20 mA, 0–10 VDC)

Output Channels    4 analog outputs (4–20 mA)

Isolation    1500 Vrms galvanic isolation (channels to ground)

Communication Interface    2 × 100 Mbps Ethernet (IONET protocol)

Power Supply    24 VDC ±10% (2 A max)

Physical Dimensions    228.6 mm (H) × 101.6 mm (W) × 165.1 mm (D)

Weight    1.2 kg

Operating Temperature    -30°C to +65°C

Humidity    5–95% non-condensing

Mounting Type    3U VME rack mount