Description
Product Overview
The GE IS220PDOAH1A is a Packaged Discrete Output (PDOA) I/O Pack engineered for the GE Speedtronic Mark VIe turbine control system. It acts as the rugged control output interface between the core control platform and field devices including solenoid valves, relays, contactors and indicator lights.
This integrated module combines an on-board embedded processor, signal conditioning circuits and dual redundant Ethernet links into a compact, field-mountable unit. It converts digital control commands from the main controller into switched output signals for field actuators, and supports local diagnostics and fault detection to reduce main controller overhead. Compatible with simplex, dual and triple modular redundant (TMR) architectures, it pairs with dedicated output terminal boards for convenient field wiring termination. Built with industrial-grade components and conformal coating, it delivers stable, noise-immune control output for mission-critical turbine protection and regulation loops in harsh power generation environments.
Core Product Features
- 16 independently isolated discrete output channels handle valve actuation, relay driving and indicator control in one compact I/O pack.
- 0.5 A per-channel output capability directly drives low-power field devices; higher-power loads can be supported via intermediate relays.
- Optical isolation between field side and logic side blocks ground loops, voltage surges and common-mode noise from field wiring.
- Dual 10/100 Mbps full-duplex Ethernet ports support redundant network communication and seamless integration with the Mark VIe control backbone.
- On-board processor handles local signal conditioning and diagnostic routines, offloading workload from the central controller.
- Front-panel LED indicators for power, attention, link status and transmit/receive activity enable quick on-site fault identification.
- Hot-swappable design allows module replacement without rack power shutdown, minimizing system downtime during maintenance.
- Compatible with SRLY and TRLY series output terminal boards for flexible field wiring and load expansion.
- Wide operating temperature range and conformal-coated PCB withstand dust, humidity and temperature extremes in turbine hall and industrial sites.
GE IS220PDOAH1A
Technical Specifications
| Item | Specification |
|---|---|
| Official Model | IS220PDOAH1A |
| Product Type | Packaged Discrete Output (PDOA) I/O Pack |
| Compatible Platform | GE Speedtronic Mark VI / Mark VIe Turbine Control System |
| Output Channels | 16 electrically isolated discrete outputs |
| Per-Channel Output Current | 0.5 A maximum per channel |
| Field Supply Voltage | 24 V DC / 28 V DC nominal |
| Isolation | Optical isolation, field side to logic side |
| Communication Interface | Dual 10/100 Mbps full-duplex Ethernet (RJ-45) |
| Redundancy Modes | Simplex, dual, triple modular redundant (TMR) |
| Power Input | 28 V DC nominal via terminal board interface |
| Operating Temperature | -30°C to +65°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% – 95% RH, non-condensing |
| Mounting | DIN rail / rack mount, hot-swappable |
| Certifications | CE, UL, industrial EMC compliance |
Application Fields
- Solenoid valve, relay and contactor control for gas and steam turbines in thermal and combined-cycle power plants
- Circuit breaker and disconnect switch control output in power generation and distribution systems
- Emergency shutdown (ESD) and sequence control output for oil, gas and petrochemical facilities
- Discrete actuator driving and safety interlock output for rotating machinery and process equipment
- Legacy Mark V / Mark VI control system retrofit and Mark VIe platform migration projects
- Industrial process control discrete output interfacing for critical sequence and interlock logic
GE IS220PDOAH1A
Related Model Recommendations
- IS220PDIAH1A: Packaged discrete input I/O pack from the same Mark VIe family, paired with PDOAH1A to form complete discrete control and monitoring loops.
- IS220PDIOH1A: Integrated discrete input/output I/O pack with 24 inputs and 12 relay outputs, combining input and output functions to save rack space.
- IS200SRLYH1A: SRLY output terminal board that works with PDOAH1A to provide field wiring termination and relay contact expansion.
- IS215UCVEH2AE: Mark VIe main controller CPU that communicates with and manages PDOA I/O packs over the redundant control network.
