Where IS200BPPBH2BBA Sits in the Rack

The IS200BPPBH2BBA is a processor and power-distribution daughterboard rather than a stand-alone I/O card: it mounts inside one of GE's Mark VI I/O packs (the BPPB design has been used inside Core Analog I/O packs and several other pack types) and handles two jobs for its host — regulating +5 VDC and ±15 VDC power rails down from a +28 VDC nominal supply, and moving data between the pack's processor and the rest of the VME rack over the backplane. Because it's buried inside the pack rather than bolted to the rack with its own faceplate, it never sees your field wiring directly — that connection is made through the pack's own front end and the terminal board it's wired to.

Construction-wise, it's a small board that attaches to its host motherboard using four standoffs and screw mounts in brass-plated corner holes, with three of its edges shaped to clear other components on the pack. You'll find two LEDs along one edge, two differently sized connectors, two phone jacks, an inductor coil, a mix of capacitor types, several ICs and transistors, and a memory chip near the board's center, with every component individually marked by reference designator. In a TMR system, three of these processor boards — one per R, S, and T channel — run the turbine application software that ties the I/O pack to the rest of the control system, and an onboard temperature sensor keeps tabs on operating conditions across a wide temperature range.

Why the Pack Might Be Innocent — Or Might Not Be the BPPB

An I/O pack fault doesn't automatically mean this specific processor board has failed. Work through the following before ordering a replacement:

• If more than one pack in the same rack section is alarming, suspect the shared +28 VDC supply or its distribution wiring before replacing individual processor boards one at a time.
• Check the field wiring and the sensor or actuator connected to the pack. The BPPB never touches that signal directly — a bad transmitter, a broken RTD lead, or a loose terminal can produce a fault that looks like a pack failure.
• Inspect the cable and connector between the I/O pack and the terminal board, and the pack's seating in the backplane. Loose connections here are a common, easily overlooked cause of intermittent faults.
• Recognize that the BPPB is one of at least two boards inside its host pack — confirming that this specific processor daughterboard, and not the analog front-end board, is what actually failed sometimes requires opening up the pack.

Once the power supply, field wiring, and cabling are cleared, replacing the BPPB is a reasonable next step.

What the IS200BPPBH2BBA Suffix Tells You

Break the string down as IS200 (platform), BPPB (function), and H2BBA (group and revision) — H2B is the group/generation, and the trailing BA identifies this specific hardware revision. This collection includes several other H2B-series BPPB boards with different trailing letters; those letters are real revision differences, so match the full part number rather than assuming any H2B board will work. Our GE Speedtronic Part Number Decoder covers how to parse the complete IS200 string.

Related Boards and Pack Families

BPPB-based processor boards have shipped inside multiple GE Mark VI I/O pack types over the years, which is why the same board sometimes appears under different descriptive names depending on its host pack. Later Mark VIe designs moved to a BPPC-based processor architecture for new I/O packs — treat that as a different generation rather than a direct substitute unless GE documentation for your specific pack confirms otherwise. If your site also has older Mark IV/Mark V equipment, our Mark V vs Mark VI: DS200 to IS200 guide and GE Mark V DS200 Boards Explained article cover that earlier numbering scheme. See the rest of the family in our GE Mark VI IS200 Boards collection or the broader GE Speedtronic Turbine Control Boards collection.

Information to Include in Your Quote Request

• Full part number with suffix: IS200BPPBH2BBA
• Host I/O pack part number, if known
• Photo of the board or pack label
• Turbine/generator model and unit ID
• Planned outage or urgent need
• Quantity

Request a Quote

This IS200BPPBH2BBA is listed in used condition, cleaned and tested, with a 1-year warranty (see table below). Pricing is quoted directly rather than posted online — submit a Request a Quote and expect a response within 24 hours. We ship worldwide DDP, accept purchase orders, and can support both planned outages and urgent breakdown situations.

General Information about the Product
Part Number	IS200BPPBH2B Mark VI IS200
Description	IS200BPPBH2B By General Electric IS200BPPBH2BBA Analog I/O Processor Board
Condition	used Cleaned and Tested. With 1 Year Warranty