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Key Technical Specifications
| Parameter | Specification |
|---|---|
| Full Model | IS200VTURH2BAC |
| Manufacturer | GE / General Electric |
| Platform | Speedtronic turbine control; most references list Mark VIe VME, some list Mark V — confirm on nameplate |
| Board Type | VME bus turbine control I/O board |
| Primary Function | Turbine signal monitoring, real-time status, fault diagnosis, alarm handling |
| Supported Inputs | Vibration and temperature sensors referenced; exact channel count varies by source |
| Bus Interface | VME bus |
| Operating Temperature | -40 °C to +70 °C per available references; verify for your revision |
| Storage Temperature | -40 °C to +85 °C per available references |
| Humidity | 5% to 95% non-condensing per available references |
| Dimensions | 220 mm × 160 mm × 40 mm per available references |
| Weight | Approximately 1.5 kg per available references |
Product Introduction
The IS200VTURH2BAC is one of those Speedtronic boards that does not get attention until a turbine rack starts throwing intermittent sensor faults or a vibration channel drops out. It sits in the VME rack and handles turbine-related signal monitoring and control functions. This is not a generic analog I/O card you can drop into any GE system. It belongs to the Speedtronic turbine control family, and it expects the right backplane, terminal boards, and configuration.Engineers keep this board as a spare because finding the exact suffix late at night is painful. The “VTU” designation points to turbine signal handling, and available references describe vibration and temperature monitoring with alarm/diagnostic functions. The real value is matching the revision. A board that powers up but runs the wrong firmware can pass basic checks and still fail during commissioning. I have seen a “close enough” Speedtronic replacement sit in a rack for two days before anyone noticed the revision mismatch was blocking I/O mapping.
Quality SOP & Tech Pitfalls
The Lab Report (SOP)
- Visual/counterfeit check: confirm IS200VTURH2BAC label, GE catalog number, board revision, serial number, connector condition, and PCB damage.
- Insulation and continuity check: verify VME edge connector, I/O terminals, and chassis ground before energizing.
- Power-up test: install in a compatible VME rack; verify board initialization and LED/status indicators.
- Communication check: confirm VME bus recognition and controller communication where test equipment allows.
- I/O verification: sample-test vibration/temperature inputs and alarm outputs against the configured application.
- Firmware/revision logging: record board revision and any visible firmware or PROM labels.
- Final packing: ESD bag, anti-static seal, nameplate photos, and test record.
The Engineer’s Warning (Pitfalls)
- Platform confusion is common. Some listings call IS200VTURH2BAC a Mark V board; others place it in Mark VIe VME. Do not assume compatibility based on the “IS200” prefix alone.
- Revision mismatch causes silent failures. The board may power up, but the controller can reject it, map I/O incorrectly, or flag configuration errors.
- Do not treat distributor specs as OEM data. Figures such as 8 channels, 10 kHz sampling, or 16-bit resolution appear in third-party listings but should be confirmed against the delivered unit.
- VME connectors are fragile. A partially seated board can create intermittent faults that look like sensor failures.
Installation & Configuration Guide
- Pre-Installation: Obtain a maintenance permit and review the Speedtronic rack procedure. Photograph the existing board label, revision, slot position, connector wiring, and LED status. ⚠️
- Removal: Follow site lockout/tagout rules. Power down the rack if required. Release retention hardware. Pull the board straight out without rocking the VME connector.
- Installation: Verify the replacement IS200VTURH2BAC revision matches the original. Align the VME edge connector carefully. Seat the board fully and secure retention hardware.
- Power-On & Testing: Restore power per procedure. Check board initialization LEDs. Verify controller recognition, I/O mapping, alarm status, and sensor readings. Perform a controlled functional test before returning the turbine control system to normal operation.
Compatible Replacement Models
| Compatibility Tier | Model / Option | Notes |
|---|---|---|
| ✅ Drop-in Replacement | IS200VTURH2BAC, same revision | Best path. Match board revision, firmware, and connector layout. |
| ⚠️ Conditional Replacement | IS200VTURH2BA / IS200VTURH2B | May be compatible within the same Speedtronic family, but revision and firmware must be verified. |
| ⚠️ Engineering Review Required | Other IS200Vxxx / IS220Vxxx turbine boards | Possible migration, but requires OEM manual confirmation and I/O revalidation. |
| ❌ Not Interchangeable | Mark VIe IS220 I/O packs, generic VME boards, non-GE turbine cards | Different mechanical, electrical, and system integration requirements. |
Frequently Asked Questions (FAQ)
Is IS200VTURH2BAC Mark V or Mark VIe?
Distributor references conflict. Some list it under Mark V; others describe it as a Mark VIe VME bus turbine card. Treat the delivered nameplate and OEM manual as the final authority.Can I substitute IS200VTURH2BA for IS200VTURH2BAC?
Not without verification. The suffix can indicate revision, firmware, or configuration changes. A close match may power up but fail during I/O mapping.What signals does this board handle?
Available references describe turbine vibration and temperature monitoring with fault/alarm functions. Exact channel count and sensor types should be confirmed from the OEM documentation.Can it be tested before shipment?
Basic visual inspection, revision verification, and power-up checks can be performed. Full functional testing requires a compatible Speedtronic VME rack and application configuration.Is this board still available new?
It is typically available as new surplus, factory sealed, or tested used. True factory-new stock depends on GE availability.Do you provide the GE manual or ControlST project?
No. The board ships as hardware. Final configuration, testing, and acceptance must follow the official GE Speedtronic documentation.What information do you need to quote it correctly?
Send a photo of the existing nameplate, board revision, rack model, slot position, application function, and any visible firmware/PROM labels. Without those, any quote is provisional.
