1、 Product basic information

Manufacturer: General Electric (GE)

Model: IS220PDIAH1B, Material Code: 336A5026ADP4

Product Series: Speedtronic Mark VIe Turbine Control System, Discrete I/O Processor Module (I/O Pack)

Product type: 24VDC digital input/output (DI/DO) I/O pack, used for on-site switch signal acquisition and control output

Core positioning: The distributed I/O core unit of the Mark VIe control system connects on-site sensors/actuators and controllers to achieve reliable acquisition, isolation, transmission, and driving of switch signals, suitable for key industrial control scenarios such as gas turbines, steam turbines, power generation, and oil and gas

2、 Core functional characteristics

1. Channel and signal capability

Configure 16 isolated digital inputs (DI) and 16 isolated digital outputs (DO), totaling 32 discrete I/O channels

Digital input: Supports 24VDC dry/wet contact signals, rated 24VDC, maximum 32VDC, can detect switch signals such as on/off, limit, status feedback, etc

Digital output: 24VDC relay/solid-state output, driving on-site solenoid valves, indicator lights, relays and other actuators

Electrical isolation between channels, suppressing common mode interference, preventing fault propagation, and ensuring system safety

2. System architecture and compatibility

Specially designed for Mark VIe/Mark VIeS distributed control systems, it is perfectly compatible with simplex, dual redundancy, and triple redundancy (TMR) architectures, meeting the high reliability requirements of critical control circuits

Support hot swap, online module replacement without system downtime, significantly reducing maintenance downtime

Passive/active hybrid design, built-in local processor, communicates with Mark VIe controller through IONet high-speed Ethernet (100Mbps) to achieve real-time interaction of distributed I/O data

Compatible terminal boards: IS200STCIH1A/2A, IS200STCIH8A, IS200TBCIH2C/H4C, IS400 series terminal boards, complete on-site wiring conversion

3. Electrical and protective characteristics

Power supply: nominal 24VDC, range 18-28.6VDC, maximum contact input voltage 32VDC, power consumption of approximately 10W

Built in overvoltage, overcurrent, and surge protection, EMI/RFI anti-interference design, suitable for strong electromagnetic environments in power plants and heavy industries

Full software configuration, no onboard jumpers/dip codes, channel parameters, filtering, and diagnostics are configured through Mark VIe software, and no hardware adjustments are required on-site

Status indication: Front LED indicator lights (power, operation, fault, channel status), visually monitoring module and channel operation status, easy to quickly locate faults

4. Environmental and mechanical reliability

Industrial grade PCB and metal structure, fanless passive heat dissipation, standard cabinet rail/rack installation

Working temperature: -30 ℃~+65 ℃, storage temperature: -40 ℃~+85 ℃, in compliance with IEC 60068 industrial environmental standards

Anti vibration and anti impact design, suitable for harsh industrial sites

Certification: UL, CE, ATEX, suitable for Class I Div 2/Zone 2 hazardous areas (oil and gas, chemical, etc.)

3、 Core Technical Specification Table

4、 Typical application scenarios

Turbine control: acquisition and control output of on-off signals for gas turbine, steam turbine start/stop, speed, valves, and protection circuits

Power generation system: I/O interfaces for power plant auxiliary equipment, circuit breakers, pump valves, limit switches, and alarm signals

Oil and gas/chemical industry: Discrete signal processing for compressors, pumps, emergency shutdown (ESD), and safety interlock circuits

Industrial critical control: Distributed I/O deployment, reducing long-distance cables, improving signal integrity and system reliability

5、 Core advantages of the product

High reliability redundancy adaptation: fully supports TMR triple redundancy to meet the high availability requirements of safety critical control circuits

Hot swappable+easy to maintain: online replacement, LED status diagnosis, software configuration, reducing maintenance difficulty and downtime

Strong isolation and anti-interference: Channel electrical isolation, industrial grade EMC design, stable operation in complex electromagnetic environments

Distributed flexible deployment: adapted to Mark VIe distributed architecture, connected to on-site devices nearby, optimized system cabling