GE IS220PAOCH1A Analog Output I/O Pack, 363A4940CSP5

Technical Specifications

Model: IS220PAOCH1A, 363A4940CSP5

Brand: GE（GE Vernova）

Product Type: PAOC analog output I/O pack

Matching System: GE Speedtronic Mark VIe turbine control system

Power Supply: 28VDC, working voltage 21‑30VDC

Output Channels: 8‑channel simplex 0‑20mA analog current output

Load Resistance: Max 900Ω per channel

Accuracy: ±0.5% full scale

Feedback Function: Real‑time current loop feedback for each output channel

Communication Interface: Dual redundant RJ45 IONet Ethernet ports

Connector: High‑density D‑Sub connector for mating with TB AO terminal board

Indicator: Front panel LED for power, network link and module fault status

Installation: Standard rack‑mount I/O pack installation

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

Humidity:5%‑95% non‑condensing

Protection Class:IP20

Weight:0.38kg

Dimension:121mm ×83mm ×42mm

Compatible System: Gas turbine, steam turbine, generator control cabinet

Core Function

PAOC analog output I/O pack for Mark VIe turbine control system. It receives digital control commands from Mark VIe main controller over redundant IONet Ethernet bus, converts digital values into stable 0‑20mA analog current signals for field valve positioners and regulating actuators. Each channel supports real‑time current feedback detection for circuit break and load fault diagnosis. Cooperates with TBAO series terminal board for field signal termination. It supports simplex and TMR triple‑modular redundant turbine control configuration, provides accurate analog regulating output for fuel valves, steam control valves and auxiliary process loops.

Product Details

The IS220PAOCH1A with part number 363A4940CSP5 belongs to PAOC series analog output I/O pack for GE Speedtronic Mark VIe turbine control system.

This compact rack‑mount I/O pack integrates local processing unit and analog acquisition circuit. Dual‑channel IONet Ethernet realizes redundant network communication with main controller, improving communication reliability. It converts control set‑points into 0‑20mA current signals, and feeds back actual output current value back to control system, enabling open‑circuit, short‑circuit and load abnormal diagnosis. It connects to TBAO analog output terminal board through D‑Sub connector to complete field wiring distribution. Front‑panel LED indicators clearly display power supply, network link and module fault information, convenient for commissioning and routine maintenance. Conformal coated circuit board improves anti‑vibration, moisture‑proof and anti‑electromagnetic‑interference performance, adapts to harsh working conditions of power‑plant turbine cabinet. Widely deployed in simplex and TMR triple‑modular redundant gas‑steam turbine control cabinets.

It belongs to critical analog output spare‑part for Mark VIe turbine control system, widely used in overhaul and renovation projects of power generation units.

It is important spare hardware for analog regulating loop debugging and defective IS220PAOCH1A module replacement.