Description

IS220PSCAH1B Servo Control I/O Pack

Technical Specifications

• Product Model: IS220PSCAH1B
• Brand: GE Vernova
• Warranty: One Year
• Input Voltage: 22.5‑28.6 VDC IONet pack supply
• Operating Temperature: ‑40 °C ~ +70 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Servo‑loop processing cycle configurable down to 500 µs
• Protection Class: IP20 field‑mount I/O pack
• Accuracy Class: High‑speed servo‑actuator control grade
• Output Frequency: Not applicable
• Rated Current: 420 mA typical power draw
• Function: Closed‑loop servo‑coil drive and LVDT position feedback acquisition for turbine fuel‑valve and actuator control
• Signal Interfaces: LVDT position‑feedback inputs, servo‑coil drive outputs
• Communication: Dual RJ45 IONet SRTP redundant Ethernet ports
• System Compatibility: GE Mark VIe turbine‑control system; mates with PSCA‑series terminal‑base
• Redundancy: Supports simplex, duplex and TMR triple‑modular‑redundant configurations
• Isolation: Galvanic isolation between field‑actuator circuits and control‑backplane
• Diagnostics: LVDT‑signal‑fault, servo‑drive‑over‑current, module‑health and network‑link LED indicators
• Certifications: CE, UL, ATEX / IECEx Zone 2 approval
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 0.41 kg
• Dimensions: 122 × 82 × 60 mm
• 

Product Overview

IS220PSCAH1B is a high‑performance servo‑control I/O pack designed for GE Mark VIe turbine‑control platform. It implements closed‑loop position‑control for gas‑turbine and steam‑turbine fuel valves, steam‑governor actuators and auxiliary‑process actuators. It reads LVDT position‑feedback signals and generates precise servo‑coil drive outputs to regulate actuator position according to controller set‑point commands. Dual‑port redundant IONet Ethernet links guarantee high‑availability communication with Mark VIe main controller. It is a core hardware component for turbine fuel‑control‑loop execution. Obsolete turbine‑control spare hardware available as refurbished and surplus tested units for legacy power‑plant‑control‑cabinet overhaul‑projects.

Application Notes

‑ Must be used with matching PSCA‑series terminal‑base assembly. ‑ Strict ESD anti‑static handling required during module replacement. ‑ Tune servo‑loop gain‑parameters via ToolboxST engineering software during commissioning. ‑ Typical deployment: power‑plant Mark VIe servo‑control‑I/O‑pack spare‑part stocking.