IS200BPPBH2BCA: A Processor Board, Not a Standalone Card

Listings for the IS200BPPBH2BCA sometimes call it a "Core I/O Module Processor Board," which is a fair description as long as you understand what it isn't: it's not a card that plugs directly into the Mark VI VME rack with its own faceplate. It's a small daughterboard that mounts inside a larger I/O pack — GE has used the BPPB design across several Mark VI pack types, including Core Analog I/O packs — attached to the pack's motherboard with four standoffs seated into brass-plated corner holes. Its job is to regulate +5 VDC and ±15 VDC power rails from a +28 VDC nominal supply and to manage the processor-to-I/O data path across the rack backplane. Three shaped edges clear components on the host board, and the assembly carries two LEDs, two differently sized connectors, two phone jacks, an inductor coil, assorted capacitors, several ICs and transistors, and a memory chip near the center, all individually marked with reference designators.

In a TMR installation, three of these processor boards — one per R, S, and T channel — run the turbine application software that connects the I/O pack to the rest of the control system. An onboard temperature sensor monitors conditions across the board's rated operating range and can contribute to system alarms if thresholds are exceeded. None of this puts the BPPB in direct contact with plant wiring — that connection happens through the pack's analog front end and the terminal board it feeds from.

Before You Order: Rule Out the Usual Suspects

Because this board lives inside the I/O pack instead of at the field-wiring interface, it's one of the easier boards in this catalog to misdiagnose. Before you commit to a replacement:

• Look for a pattern across multiple packs. Several packs alarming together in the same rack section usually means a shared +28 VDC supply problem, not several coincidental processor-board failures.
• Check the sensor and wiring feeding the pack. The BPPB doesn't see that signal itself, so a failed transmitter or a loose field connection can present exactly like a pack fault.
• Inspect backplane seating and the cable to the terminal board. A partially seated pack or a marginal cable connection is a common, overlooked cause of intermittent alarms.
• Confirm which board inside the pack actually failed. The BPPB shares its housing with at least one other board, and a fault blamed on "the pack" isn't automatically this processor board.

Once shared power, field wiring, and cabling are ruled out, replacing the BPPB is the logical next step.

Decoding IS200BPPBH2BCA

The string breaks down into IS200 (platform), BPPB (function code), and H2BCA (group and revision), where H2B is the group/generation and CA is the specific revision. This collection carries several other H2B BPPB boards with different trailing letters — those differences are real, so always match the full part number rather than treating any H2B board as equivalent. Our GE Speedtronic Part Number Decoder walks through how to read the complete IS200 string.

Related Boards and Cross-Compatibility

The BPPB design has been used inside several different Mark VI I/O pack types, which is why it appears under a few different names depending on the host pack it's installed in. Later Mark VIe hardware moved new I/O packs to a BPPC-based processor design — don't assume that generation is interchangeable with this one without checking GE documentation for your specific pack. For teams also supporting older Mark IV/Mark V equipment, see our Mark V vs Mark VI: DS200 to IS200 guide and GE Mark V DS200 Boards Explained article. The rest of the family is in our GE Mark VI IS200 Boards collection and the broader GE Speedtronic Turbine Control Boards collection.

What We Need to Quote This

• Full part number with suffix: IS200BPPBH2BCA
• Host I/O pack part number, if known
• Photo of the board or pack label
• Turbine/generator model and unit ID
• Planned or urgent requirement
• Quantity

Request a Quote

This IS200BPPBH2BCA is listed in used condition, cleaned and tested, with a 1-year warranty (see table below). We quote every order individually instead of posting prices — submit a Request a Quote and expect a reply within 24 hours. Worldwide DDP shipping and purchase orders are both supported, for planned outages or urgent breakdowns.

General Information about the Product
Part Number	IS200BPPBH2B Mark VI IS200
Description	IS200BPPBH2B By General Electric IS200BPPBH2BCA Core I/O Module Processor Board
Condition	used Cleaned and Tested. With 1 Year Warranty