Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | GE |
| Model | IS215UCVEH2AB |
| Associated Numbers | VMIVME-7614-132 / 350-007614-132C |
| Product Type | VME Single-Board Computer (SBC) |
| Platform | GE Mark VI Speedtronic |
| Processor | Intel Celeron 300 MHz |
| Operating System | QNX Real-Time Operating System |
| Memory | 32 MB DRAM |
| Flash Storage | 16 MB CompactFlash |
| Backup Memory | 32 KB Battery-Backed SRAM |
| Bus Interface | VMEbus |
| Ethernet | Dual 10/100Base-T |
| Serial Ports | Three RS-232 |
| Power Input | +5 VDC via VME Backplane |
| Typical Power Consumption | Approximately 12 W |
| Operating Temperature | -30 °C to +65 °C |
| Mounting | Standard 6U VME Rack |
These specifications are consistently reported across industrial automation suppliers, although memory and storage configurations should always be confirmed against the installed hardware revision.
Product Introduction
The GE IS215UCVEH2AB (VMIVME-7614-132 / 350-007614-132C) is the primary VME Single-Board Computer used in the GE Mark VI Speedtronic turbine control platform. It functions as the main controller, executing turbine application software, processing real-time control logic, coordinating communications with I/O modules, and managing system diagnostics.
Built around an Intel Celeron processor running the QNX real-time operating system, the board provides deterministic control performance required for gas turbines, steam turbines, and combined-cycle power plants. Dual Ethernet ports, VMEbus architecture, and industrial-grade design allow it to integrate with the Mark VI control network while maintaining continuous operation under demanding plant conditions.
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| CPU board not booting | Controller hardware failure | ✅ High | Observe boot LEDs and serial console output | Verify backplane power before replacement |
| Controller not communicating | Ethernet configuration or hardware fault | ✅ High | Test Ethernet ports and check link LEDs | Verify network settings and cabling |
| System watchdog reset | Application fault or memory error | ⚠️ Medium | Review Mark VI diagnostic logs | Reload application and monitor operation |
| Multiple I/O modules offline | VME backplane communication issue | ⚠️ Medium | Inspect VME connectors and adjacent boards | Verify backplane integrity |
| Continuous reboot cycle | Unstable +5 VDC backplane supply | ✅ High | Measure VME backplane voltage under load | Repair power supply before replacing CPU |
| Flash or SRAM errors | Memory corruption | ⚠️ Medium | Review startup diagnostics | Restore configuration or replace board |
| No controller response | Incorrect board revision | ⚠️ Medium | Compare complete catalog numbers and firmware | Install approved hardware revision |
Field Tip: In Mark VI systems, the SBC itself is not always the root cause of a startup failure. Low backplane voltage, CompactFlash corruption, or an incompatible firmware revision can produce symptoms that resemble CPU failure. Before replacing the controller, verify the +5 VDC rail, review the boot diagnostics, and inspect the CompactFlash and battery-backed SRAM status. Those checks often identify the actual problem and prevent unnecessary replacement.
- IS215UCVEH2AB VMIVME-7614-132
- IS215UCVEH2AB VMIVME-7614-132
Frequently Asked Questions (FAQ)
Q1. Are IS215UCVEH2AB, VMIVME-7614-132, and 350-007614-132C the same product?
Yes. They identify the same controller assembly from different numbering systems used by GE and VMIC. Always verify the complete assembly number and hardware revision before ordering.
Q2. What is the primary function of this board?
It serves as the main processor for the Mark VI turbine control system, executing application software, coordinating I/O communication, handling diagnostics, and maintaining deterministic real-time control.
Q3. Which operating system does the controller use?
Most IS215UCVEH2AB boards run the QNX real-time operating system, selected for deterministic response and high reliability in turbine control applications.
Q4. Can I replace the board without reloading the control application?
Not always. Depending on your system configuration, you may need to restore the application software, network configuration, and hardware parameters after installing the replacement board. Always back up the controller before maintenance.
Q5. Is this board hot-swappable?
No. Because it is the primary controller, replacing it requires shutting down the control system unless the official GE maintenance procedure explicitly states otherwise.
Q6. Why are New Surplus boards commonly used?
The is a legacy Mark VI component. Most available inventory consists of genuine unused surplus stock or professionally tested surplus boards, offering a practical option for maintaining existing turbine control systems.
Q7. What should I verify before installation?
Experienced Mark VI engineers recommend checking:
- Complete part number ( / VMIVME-7614-132 / 350-007614-132C)
- Hardware revision
- Firmware and QNX software compatibility
- VME backplane condition
- +5 VDC backplane voltage
- Ethernet configuration
- CompactFlash and SRAM status
- ESD protection during installation
Completing these checks before startup significantly reduces commissioning issues and helps ensure reliable operation of the Mark VI control system.
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