Technical Specifications Module Type: Servo Control Analog Packaged I/O Pack Applicable System: GE Mark VIe Speedtronic Turbine Control System Communication Interface: Dual 10/100Mbps RJ45 Ethernet IONet redundant network Field Interface: Connects to matched servo terminal board via dedicated cable Power Supply: 28VDC nominal local field power Signal Type: Analog servo drive output and actuator position feedback input Operating Temperature: ‑30 ℃ to +70 ℃ Storage Temperature: ‑40 ℃ to +85 ℃ Relative Humidity: 5%‑95%, non‑condensing Mechanical Dimension: Standard Mark VIe packaged I/O housing, DIN‑rail mountable Certifications: CE, UL power‑generation industrial component compliance
Functional Features Converts digital valve‑position commands from main controller into high‑precision analog servo drive signals. Receives and conditions position feedback signals from field servo‑valve actuators. Redundant dual‑Ethernet communication guarantees reliable command‑and‑feedback data exchange. 
Application Scenarios Distributed servo‑valve closed‑loop drive control for Mark VIe gas‑turbine and steam‑turbine fuel and steam valves.
Structural Characteristics Compact metal‑shielded packaged housing for TS‑35 DIN‑rail installation. Front faceplate fitted with status LED indicators and dual RJ45 Ethernet connectors. Rear power input connector and dedicated cable port for servo terminal‑board interconnection.
Working Principle Main controller sends digital valve‑position commands to IS220PSCAH1A through redundant IONet Ethernet. Internal circuit converts digital command values into analog servo drive signals, which are transmitted via servo terminal board to field servo‑valve actuators.
Installation Requirements Install module on standard TS‑35 DIN‑rail inside local field‑side enclosure. Supply stable 28VDC power and strictly observe polarity requirement. Connect dual Ethernet interfaces to redundant IONet control network.
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