GE IS220PDOAH1B: Mark VIe Discrete Output Module

Technical Dossier

Product Details And Specifications

GE IS220P Series Technical Notes

The Evolution of IS220P Architecture

The IS220P series was introduced alongside the Mark VIe platform in the early 2000s as a successor to the IS200-series modules used in Mark VI systems. Key architectural milestones include:

Mark V (IS2xx legacy): Serial-bus I/O, non-redundant backplane, limited diagnostics. Modules such as IS200BICLH1A and IS200TREGH1B defined this era.

Mark VI (IS200P transition): Introduced the IONET Ethernet backbone concept in a hybrid form. IS200-series modules remained dominant but lacked the full triple-redundancy of the successor.

Mark VIe (IS220P generation): Full triple-redundant IONet (R, S, T networks), 100 Mbps Ethernet I/O bus, IEC 61131-3 compliant logic execution, and modular hot-swap capability. The IS220P series was purpose-built for this architecture.

Mark VIeS / Mark VIeR (current evolution): GE introduced safety-rated (SIL 2/3) variants and redundant controller modules. Some IS220P modules are compatible with these platforms; others require IS230P or IS410 series replacements. Plant engineers upgrading from Mark VIe to Mark VIeS must audit IS220P module compatibility on a per-model basis, as backplane pinouts and firmware handshake protocols differ.

IS220P Full Catalog & Functionalities (SKU List)

The following SKUs represent the core IS220P module range, organized by functional category. Each model is a verified member of the GE Mark VIe IS220P family.

Discrete Output Modules

IS220PDOAH1B: 24 VDC discrete output module, 24-channel, Mark VIe rack-mount, IONet-compatible.
IS220PDOAH1A: Earlier revision of PDOAH1B; functionally equivalent, firmware version differences apply.
IS220PDOAS1A: Discrete output module, simplex configuration, reduced channel density variant.

Discrete Input Modules

IS220PDIEH1A: 24 VDC discrete input module, 24-channel, Mark VIe, supports contact and voltage inputs.
IS220PDIAH1A: Discrete input module, high-density configuration, 48-channel equivalent grouping.
IS220PDIAS1A: Simplex discrete input, used in non-redundant I/O configurations.

Analog Input Modules

IS220PAIAH1A: Analog input module, 16-channel, 4–20 mA / 0–10 V, Mark VIe IONet.
IS220PAICH1A: Analog input, thermocouple/RTD capable, 16-channel, cold junction compensation integrated.
IS220PAICH1B: Revised thermocouple/RTD analog input; improved noise rejection over H1A revision.
IS220PAIOH1A: Analog input/output combination module, 8 AI + 4 AO channels.

Analog Output Modules

IS220PAOAH1A: Analog output module, 8-channel, 4–20 mA, Mark VIe rack-mount.
IS220PAOAH1B: Revised analog output; enhanced loop diagnostics and HART pass-through support.

Communication & Interface Modules

IS220PPROH1A: Profibus DP master communication module for Mark VIe, supports up to 125 slave nodes.
IS220PTCCH1A: Thermocouple input module, 16-channel, dedicated cold-junction compensation per channel.
IS220PVIBH1A: Vibration monitoring input module, 4-channel, compatible with proximity probes and accelerometers.

Power & Specialty Modules

IS220PPWRH1A: Distributed I/O power supply module for IS220P rack, 24 VDC regulated output.
IS220PTURH1A: Turbine-specific I/O module, integrates speed, temperature, and valve position inputs in a single slot.

Quality Control for the IS220P Range

IS220P modules incorporate a multi-layer backplane bus interface and IONet Ethernet transceiver that require functional validation beyond basic power-on testing. DriveKNMS applies the following test protocol to all IS220P units prior to dispatch:

Backplane continuity test: All J1/J2 connector pins verified against GE IS220P mechanical drawings for open circuits and shorts.
IONet communication test: Module inserted into a live Mark VIe test rack; IONet R/S/T network registration confirmed via ToolboxST diagnostic interface.
Channel-level functional test: For discrete output modules (e.g., IS220PDOAH1B), all 24 output channels are individually energized and verified at rated 24 VDC load. For analog modules, output accuracy is verified against a calibrated reference meter (±0.1% FS).
Thermal soak: Units operated at 45°C ambient for 4 hours to screen latent component failures.
Firmware version logging: FPGA and application firmware versions recorded and included with shipment documentation.

Modules that fail any stage of this protocol are quarantined, documented, and not offered for sale.