GE IS220PAICH2A Mark VIe Analog I/O Pack Module

The GE IS220PAICH2A is an analog I/O pack for Mark VIe Speedtronic turbine control system. It features 10‑channel analog inputs and 2‑channel analog outputs with 0‑200mA high‑current output capability, collecting field transmitter signals and outputting analog control signals for turbine actuators.

This I/O pack adopts dual Ethernet network communication, connects to terminal board via DC‑37 connector, supports simplex, dual and TMR redundant configurations. It acts as critical aftermarket spare for maintenance, overhaul and retrofitting of gas‑turbine and steam‑turbine control racks in power plants.

Main Specifications

• Brand: GE; Model:IS220PAICH2A; Type: Mark VIe Turbine Analog I/O Pack
• Channels:10 analog inputs, 2 analog outputs; first output supports up to 200mA high‑current output
• Signal Type: 4‑20mA, 0‑10V, 0‑5V; Interface: Dual Ethernet, DC‑37 field connector
• Function: Analog signal acquisition, D/A conversion, network data transmission, on‑board self‑diagnosis
• Feature: Support simplex/dual/TMR redundancy, LED status indicator, direct‑mount on terminal board
• Installation: Directly mount on matching Mark VIe terminal board inside turbine control cabinet
• Operating Environment:‑30℃ ~ +65℃, 5%‑95% RH non‑condensing
• Certifications: CE compliant for power‑plant turbine control automation applications

Core Functions

• Receive analog signals from pressure, temperature and flow field transmitters and convert into digital data for main controller.
• Convert digital control commands into analog output signals to drive valve positioners and field actuators.
• Realize high‑speed data interaction with Mark VIe controller through dual redundant Ethernet I/O network.
• On‑board hardware self‑diagnosis detects channel abnormal, power fault and communication failure, indicates status via LED lights.
• Support simplex, dual and triple modular redundant deployment to satisfy different turbine safety control requirements.
• Complete parameter configuration, channel calibration and fault diagnosis via GE ControlST engineering software suite.

Application Scenarios

• Analog signal acquisition and output unit for gas‑turbine and steam‑turbine Mark VIe control systems in power‑plant sites.
• Process signal interface for heavy‑duty rotating‑machinery control and safety interlock automation platforms.
• Retrofit and spare replacement for legacy IS220PAICH series analog I/O pack hardware systems.
• Turbine control cabinet overhaul, analog‑loop debugging and faulty I/O‑pack replacement projects.
• Spare‑parts inventory for power‑plant turbine‑control integrators and electrical engineering contractors.

• Global aftermarket spare supply for technical teams maintaining GE Speedtronic Mark VIe turbine‑control hardware.