GE IS220PDIOH1B Discrete I/O Pack Module

GE IS220PDIOH1B is a combined discrete input and output pack developed for the GE Mark VIe turbine control system. It collects digital contact signals from field equipment and executes on-off control outputs for valves, relays and auxiliary devices.

Equipped with dual redundant Ethernet IONet communication ports and built-in local processor, this module provides reliable real-time signal processing. It is widely used as critical spare parts for gas and steam turbine control systems in power plants.

Main Specifications

• Brand: GE
• Model: IS220PDIOH1B
• Product Type: Mark VIe Discrete I/O Pack
• Channel configuration: 12 digital inputs + 12 digital outputs
• Communication: Dual 10/100Mbps Ethernet IONet redundant interface
• Power supply: 28 VDC nominal operating voltage
• Optical isolation design improves anti-interference capability
• Front panel LED indicators for network, operation and fault diagnosis
• Match TDBS / TDBT series terminal boards for field wiring
• Operating Temperature Range: -30°C ~ +65°C

Core Functions

• Acquire feedback signals of limit switches, valve positions and safety contacts on turbines
• Receive control commands from main controller and drive field relays and actuators
• Realize high-speed real-time data exchange through redundant IONet network
• Self-diagnose internal hardware faults and wiring abnormal conditions automatically
• Onboard processor undertakes local signal filtering to reduce main controller load
• Compact integrated I/O design saves installation space in control cabinets
• Support system configuration, monitoring and fault diagnosis via control software
• Modular structure facilitates quick disassembly and spare parts replacement
• Conformal coated circuit board adapts to harsh power plant environment
• Meet long-term continuous stable operation requirements of turbine control systems

Application Scenarios

• Thermal power plant GE Mark VIe gas turbine control racks
• Steam turbine monitoring and auxiliary equipment control systems
• Combined cycle power unit automation control cabinets
• Oil & gas industry turbine and compressor control equipment
• Biomass power generation unit safety interlock control systems
• Industrial power plant auxiliary machinery monitoring and control racks
• Energy storage power station turbine protection automation equipment
• Waste-to-energy power plant main unit control system
• Overhaul, retrofit and spare parts replacement of Mark VIe control systems
• GE turbine control I/O spare parts inventory and field service projects