GE IS220PAICH1A Analog I/O Pack

Technical Specifications

Model: IS220PAICH1A

Part Number: IS220PAICH1A

Brand: GE（GE Vernova）

Product Type: Analog input‑output processing pack

Matching System: GE Speedtronic Mark VIe distributed turbine control system

Power Supply:27.4‑28.6VDC，nominal 28VDC

Signal Type: 4‑20mA, 0‑20mA,‑10~+10VDC

Resolution:16‑bit ADC

Accuracy:Typical ±0.1% full scale

Isolation:Field‑to‑backplane galvanic isolation

Communication:Dual RJ45 IONet redundant Ethernet interface

Installation:Mark VIe I/O cabinet plug‑in pack installation

Operating Temperature:‑30℃ ~ +65℃, non‑condensing

Protection Class:IP20

Weight:0.36kg

Dimension:158mm ×107mm ×29mm

Compatible System:Power plant gas‑steam turbine, generator control cabinet

Core Function:PAIC analog I/O pack for Mark VIe turbine control system. Cooperates with analog terminal boards to collect pressure, flow, liquid‑level analog signals from field transmitters. It completes analog‑to‑digital conversion and outputs analog control signals to actuators. Supports simplex, dual and TMR triple‑modular redundant architectures, realizes turbine process variable monitoring and valve regulation control.

Product Details

The IS220PAICH1A is analog input‑output processing pack for GE Mark VIe Speedtronic distributed turbine control system.

This compact hot‑swappable I/O pack is installed inside Mark VIe standard I/O cabinet, working with matching analog terminal boards. It receives 4‑20mA and voltage analog signals from field pressure, flow and liquid‑level transmitters, converts analog signals into digital data for controller calculation; meanwhile converts control commands into analog output signals to drive valves and actuators. Dual‑port IONet redundant Ethernet guarantees stable real‑time data interaction with main controller.

Built‑in comprehensive channel self‑diagnosis function, it can detect signal over‑range, open‑circuit and short‑circuit faults, upload fault codes and alarm records. Conformal coated circuit board improves anti‑interference and anti‑vibration performance, adapts to harsh turbine‑hall electromagnetic environment. It meets Class I Div.2 hazardous‑area certification requirements.

It belongs to critical analog signal spare‑part for Mark VIe turbine control system, widely used in overhaul and renovation projects of gas‑steam turbine generating units.

It is important spare hardware for turbine analog signal loop debugging and defective IS220PAICH1A pack replacement.