GE IS230STAOH2A Analog Output I/O Pack

Technical Specifications

Model: IS230STAOH2A

Brand: GE（GE Vernova）

Product Type: Isolated analog output I/O pack

Matching System: GE Speedtronic Mark VIe turbine control system

Power Supply: 24VDC, working voltage 21.6‑26.4VDC, typical power consumption 12W

Output Channels: 8‑channel isolated analog output

Signal Range: Configurable 4‑20mA current, 0‑10V voltage

Resolution: 16‑bit DAC

Accuracy: ±0.1% full scale

Load Capacity: 0‑600Ω for current output

Isolation: 2000Vrms channel‑to‑channel galvanic isolation

Communication Interface: IONet high‑speed field bus interface

Indicator: Front‑panel multi‑LED for power, network link and channel status

Installation: Standard 35mm DIN‑rail mounting inside control cabinet

Operating Temperature:‑40℃ ~ +70℃, non‑condensing

Humidity:5%‑95% non‑condensing

Protection Class:IP20

Weight:0.80kg

Dimension:178mm ×330mm ×25mm

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

Core Function

STAOH isolated analog output I/O pack for Mark VIe turbine control system. It converts digital control commands from main controller into standard 4‑20mA / 0‑10V analog signals for field actuators such as valve positioners. Each channel provides independent galvanic isolation to suppress field electromagnetic interference. It communicates with Mark VIe controller via IONet field bus, supports simplex and TMR triple‑modular redundant turbine control configuration, realizes precise continuous regulation of fuel valves, steam valves and auxiliary process loops.

Product Details

The IS230STAOH2A is STAOH series isolated analog output I/O pack for GE Speedtronic Mark VIe turbine control system.

This DIN‑rail mounted I/O module undertakes digital‑to‑analog conversion work for turbine control loops. It receives set‑point commands from Mark VIe main controller over IONet bus and outputs high‑precision analog control signals to field valve positioners and regulating actuators. 16‑bit DAC guarantees high‑resolution adjustment performance for valve stroke. Channel‑by‑channel galvanic isolation prevents ground loop interference and improves system stability under plant harsh electromagnetic environment. Front‑panel LED indicators display module power status, network communication health and each output channel working state, convenient for commissioning, routine inspection and fault location. 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 IS230STAOH2A module replacement.