IS200BPPBH2BGB: Power and Processor Interface, Not a Field I/O Card

It's easy to read "Analog I/O Processor Board" and picture a card that terminates field signals directly. The IS200BPPBH2BGB doesn't work that way. It's a daughterboard fitted inside a Mark VI I/O pack, where its job is to regulate +5 VDC and ±15 VDC power for the pack's other circuits from a +28 VDC nominal supply, and to manage the processor-to-rack data path over the backplane. The field wiring itself lands on the pack's own terminal board, not on this board. Physically, the BPPB attaches to its host motherboard with four standoffs through brass-plated corner holes, with three edges shaped to fit around other components, and it's built around two LEDs, two differently sized connectors, two phone jacks, an inductor coil, a mix of capacitors, several ICs and transistors, and a memory chip near the center — every part individually marked with a reference designator.

In TMR systems, expect three of these boards running in parallel, one per R, S, and T channel, each executing the turbine application software that ties its I/O pack into the wider control system. An onboard temperature sensor supports condition monitoring across the board's rated operating range and can raise an alarm if temperatures move outside expected bounds.

Checks to Run Before Ordering a Replacement

A fault reported against an I/O pack is not automatically a BPPB failure. Work through this list first:

• Is more than one pack in the same rack section alarming? That pattern usually points to the shared +28 VDC supply, not multiple coincidental processor board failures.
• Has the field device or wiring feeding this pack been checked? The BPPB has no direct visibility into that signal — a bad transmitter or a loose field terminal can look exactly like a pack fault.
• Is the pack fully seated in the backplane, and is the cable to its terminal board intact? Loose connections here are a frequent, easily overlooked cause of intermittent alarms.
• Has the actual failed component inside the pack been confirmed? The BPPB shares its housing with other circuitry, so "the pack failed" doesn't automatically mean this specific board did.

With shared power, field wiring, and cable connections ruled out, replacing the BPPB becomes the logical step.

What the IS200BPPBH2BGB Suffix Means

The part number splits into IS200 (platform), BPPB (function code), and H2BGB (group and revision), where H2B is the group/generation and GB is this specific revision. Several other H2B-series BPPB boards are stocked in this collection under different trailing letters — those are genuine revision differences, so always match the complete string. Our GE Speedtronic Part Number Decoder explains how to parse a full IS200 part number.

Related Boards

The BPPB design has been used across several Mark VI I/O pack types, so it's cataloged under a few different descriptive names depending on the host pack. Later Mark VIe hardware introduced a BPPC-based processor design for new I/O packs — treat that as a different generation, not an automatic substitute, unless GE documentation for your specific pack says otherwise. Teams also supporting older Mark IV/Mark V equipment should see our Mark V vs Mark VI: DS200 to IS200 guide and GE Mark V DS200 Boards Explained article. Browse the rest of the family in our GE Mark VI IS200 Boards collection or the wider GE Speedtronic Turbine Control Boards collection.

What to Include in Your Quote Request

• Full part number with suffix: IS200BPPBH2BGB
• 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 IS200BPPBH2BGB is listed in used condition, cleaned and tested, with a 1-year warranty (see table below). We quote every order directly rather than posting prices online — submit a Request a Quote and expect a response within 24 hours. We ship worldwide DDP, accept purchase orders, and support both planned outages and urgent breakdowns.

General Information about the Product
Part Number	IS200BPPBH2B Mark VI IS200
Description	IS200BPPBH2B By General Electric IS200BPPBH2BGB Analog I/O Processor Board
Condition	used Cleaned and Tested. With 1 Year Warranty