Product Core Brief
- Model:
- Brand: GE (General Electric)
- Series: Mark VIe / Mark VIeS — Speedtronic I/O pack family
- Core Function: Analog I/O module — acquires and conditions field analog signals (temperature, pressure, flow, vibration) and delivers control signals to actuators, passing data to the controller over the I/O network
- Product Type: Turbine control analog I/O module / legacy spare
- Key Specs: Mounts on an I/O terminal board; communicates with the controller over the redundant Ethernet I/O network; supports channel-level diagnostics
- Condition: New Original / New Surplus
Key Technical Specifications
| Category | Parameter | Value |
|---|---|---|
| Identification | Model | |
| Identification | Brand / Platform | GE / Mark VIe, Mark VIeS |
| Identification | Revision | VERIFY — confirm from nameplate; sibling codes are H1A / H1B |
| Function | Module Type | Analog I/O module (I/O pack) |
| Signal Types | Supported | 4–20 mA / 0–20 mA current, voltage inputs, thermocouple, LVDT, vibration, servo outputs (per terminal board configuration) |
| Interfaces | Controller Comms | Redundant Ethernet I/O network (IONet) |
| Interfaces | Physical | Mounts on I/O terminal board; signals and power via backplane |
| Channels | Count | VERIFY — depends on terminal board type |
| Electrical | Supply | VERIFY — supplied via terminal board (listings cite 24–28 VDC) |
| Environmental | Operating Temperature | VERIFY — listings cite −30 to +65 °C and −40 to +70 °C |
| Software | Configuration | GE ToolboxST |
| Compatibility | Terminal Boards | VERIFY — confirm compatible terminal board model |
| Supply | Availability Status | Legacy / obsolete stock |
Product Introduction (No Fluff)
GE IS230PCAAH1BB is an analog I/O module in the Mark VIe / Mark VIeS Speedtronic platform. It sits on a terminal board, conditions the analog signals coming from field sensors, and passes them to the controller
over the redundant I/O network — and drives outputs to actuators on the return path. On a running turbine, it is the part whose failure costs you a measurement channel, not the whole control block.
Two details decide whether a replacement works. First, the platform: listings calling this a “Mark V TCQA board” are wrong — a Mark V card will not seat in a Mark VIe I/O pack. Second, the suffix: published codes are IS230PCAAH1A and IS230PCAAH1B, so confirm whether your unit truly ends H1BB or whether that trailing character is a transcription error. Bottom line: photograph the nameplate before ordering.
QA & Testing SOP
- Anti-counterfeit intake. Nameplate photographed under raking light; model, revision, and lot code checked for consistent laser depth. Counterfeits fail on the trailing characters.
- Connector and board inspection. Backplane connector, terminal-board edge fingers, and pins checked for bending, oxidation, and heat discoloration. A single damaged pin mimics a field fault.
- Rack power-up. Installed in a known-good Mark VIe test I/O pack. Startup sequence and front-panel LED states compared against the manual’s expected pattern.
- Function verification. Module addressed via ToolboxST; each analog channel exercised against a calibrated reference source; channel diagnostics (short-circuit, open-circuit, self-test) confirmed to trigger correctly .
- ESD-safe, moisture-protected packing. Anti-static bag, foam cradle, humidity indicator, sealed and photographed before dispatch.
Installation Pitfalls & Guide
❗ Platform confusion. Do not order this as a Mark V TCQA board. IS230PCAAH1BB is a Mark VIe / Mark VIeS I/O module. Confirm against the removed unit’s nameplate.
❗ Suffix verification. Published codes are H1A and H1B. Confirm the exact trailing characters before purchase — a wrong suffix means a wrong signal set.
❗ Terminal board dependency. Channel count and signal types depend on the terminal board it mounts to. Confirm the terminal board model matches your existing wiring.
❗ Configuration is not stored on the module. A replacement boots with defaults. Restore the ToolboxST I/O configuration before energizing .
❗ Redundancy state. On a TMR or redundant I/O pack, identify the active leg before removal to avoid an unplanned switchover during operation.
Replacement sequence:
- Pre-install — photograph pack position, terminal board wiring, and LED states; export the configuration.
- Removal — follow the documented procedure; label every cable.
- Install — seat fully on the terminal board, restore grounding, torque to spec.
- Commissioning — cold boot, load configuration, validate each analog channel against a known reference, confirm healthy status on all legs, then return the unit to service.
Technical FAQ
Is pricing negotiable on volume? On legacy Mark VIe stock, price follows availability rather than quantity. Tell us your real requirement up front.
What warranty applies? Twelve months on New Original. Six months on New Surplus. We state the difference rather than bury it.
Is IS230PCAAH1BB a processor module? No. It is an analog I/O module. The “core processor” label seen in some listings is wrong.
Is it a Mark V part? No. It belongs to the Mark VIe / Mark VIeS platform. Mark V TCQA documentation circulating online refers to a different generation.
Why not upgrade to a current GE turbine control platform? Because a newer platform changes I/O architecture, terminal boards, and commissioning — that’s an engineering project, not a purchase order. If you want that path, we’ll scope it honestly.
Next step: send a nameplate photo and I’ll confirm the suffix and revision, then replace every VERIFY field with real data. I can also add FAQPage + Product Schema markup on request.
