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GE IS220PDOAH1AJ Discrete Output Pack

The GE IS220PDOAH1AJ serves as the primary IS220PDOAH1 Discrete Output Pack utilized to execute isolated relay switching and actuator control functions across GE Mark VIe Speedtronic turbine control system platforms. The module provides 12 relay output channels, redundant Ethernet communication, and isolated field signal execution.

Hardware Specifications

Parameter	Specification
Model	IS220PDOAH1AJ
Brand	GE
Origin	United States
Weight	0.45 kg
Dimensions	133 x 38 x 83 mm
Operating Temp	-40 deg C to +70 deg C
Power Consumption	Approximately 4-8 W
Series	Mark VIe Speedtronic Turbine Control System
Hardware Type	Discrete Output Pack (PDOA)
Relay Outputs	12 Form C relay outputs
Relay Rating	3 A @ 250 VAC / 30 VDC
Isolation	1500-2500 V RMS channel-to-channel and channel-to-ground
Communication Interface	Dual redundant 100 Mbps Ethernet IONet
Processor	Dedicated 32-bit CPU with flash and RAM
Power Supply	27.4-32 VDC nominal 28 VDC
Switching Time	Less than 10 ms relay operate/release
Diagnostics	Front-panel Power, Fault, Communication, Attention LEDs; startup self-test
Certifications	UL Class I Div 2, ATEX Zone 2, IEC 61010

GE Mark VIe Ethernet I/O and Output Switching Characteristics

The IS220PDOAH1AJ integrates GE Mark VIe I/O architecture with deterministic output processing and redundant Ethernet communication through IONet interfaces. The module executes discrete command signals from the controller and transfers them to isolated relay output circuits for field actuator operation.

The PDOA module supports industrial control network configurations using deterministic Ethernet communication and I/O density scaling within Mark VIe systems. The isolated relay channels provide electrical separation between logic processing circuits and external field loads.

The module supports simplex, dual, and triple modular redundancy (TMR) configurations when combined with compatible GE terminal boards. Firmware flash compatibility and controller configuration matching are required for system integration.

Frequently Asked Questions

Q: How many relay output channels are available on the IS220PDOAH1AJ?
A: The module provides 12 Form C relay output channels for discrete actuator and control circuit switching.

Q: What communication interface is used by the PDOA module?
A: The IS220PDOAH1AJ uses dual redundant 100 Mbps Ethernet IONet communication for Mark VIe system data exchange.

Q: Can the IS220PDOAH1AJ be installed in a redundant control configuration?
A: The module supports simplex, dual, and TMR configurations when integrated with compatible Mark VIe terminal board assemblies.

Field Installation Guidelines

Install the IS220PDOAH1AJ according to GE Mark VIe cabinet and I/O network configuration documentation. Verify the mounting position, power wiring, and Ethernet connections before applying system power.

Connect relay output wiring according to the terminal board wiring diagram. Separate relay output cables from sensitive analog signal wiring and communication cables where required to reduce electromagnetic interference.

Use proper grounding methods for cabinet assemblies and verify shield termination practices for Ethernet and field wiring. Confirm the 28 VDC nominal supply polarity before module startup.

The module supports hot-swappable installation procedures within compatible Mark VIe configurations. Follow system maintenance procedures to prevent unintended relay state changes during replacement.

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