Description
Product Introduction
The GE IS200VPROH2B is a VMEbus processor board from the Mark VIe Speedtronic series, purpose-built for heavy-duty turbine control in power generation and oil & gas applications. This board acts as the primary computational engine executing turbine protection logic, speed/load control, and sequence-of-events recording. The H2B revision represents a significant hardware upgrade with double the SDRAM and flash memory compared to earlier H1 variants.
What sets the H2B revision apart is the increased memory density—128 MB SDRAM and 64 MB total flash—which provides substantial headroom for complex control algorithms, larger application code, and extended data logging capabilities. This translates to faster scan times, more I/O points per rack, and the ability to run more sophisticated turbine models without performance degradation. For system integrators upgrading Mark VIe cabinets or adding advanced control features, this board offers a direct performance upgrade path—no adapter frames or hardware modifications required.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Processor | PowerPC 603e, 300 MHz |
| SDRAM | 128 MB (soldered) |
| Flash Memory | 64 MB total (32 MB boot + 32 MB application) |
| VME Bus | VME64, A32/D32 |
| Ethernet Ports | 2x 10/100Base-TX (front panel) |
| Serial Ports | 1x RS-232 (debug console) |
| Operating Temperature | 0 to +55°C (ambient) |
| Storage Temperature | −40 to +85°C |
| Power Draw | 5 VDC @ 3.5 A typical (17.5 W) |
| Battery | CR2032 for RTC (field-replaceable) |
| Firmware | Requires Mark VIe Toolkit v6.2 or higher |
Key Selling Points & Differentiators
- Double Memory Capacity: 128 MB SDRAM and 64 MB flash vs. 64 MB and 32 MB on H1 variants. This allows larger application code, more data logging points, and faster execution of complex turbine models.
- Performance Headroom: The extra memory reduces page faults and swapping, resulting in more deterministic scan times—critical for protection functions that must execute within strict time windows.
- Revision H2B Advantage: Newer silicon and boot flash support the latest Mark VIe Toolkit features (v6.2+). Earlier H1 boards cannot run applications compiled for the newer toolchain.
- Live Test Verified: Every board undergoes a 48-hour burn-in running actual turbine simulation loops, not just a POST. We log all Ethernet handshakes, VME arbitration cycles, and I/O scan times, with special attention to memory access patterns at full load.
- 90-Day Warranty: Covers functional defects. If it fails under normal operating conditions, we replace it. No restocking fee for verified returns.
- OEM Traceability: All units come from audited surplus channels with original GE anti-static bags and serialized labels. No clones, no pull-and-refurbish from unknown sources.
- Configuration Backup Service (Free): Upon request, we extract and archive your existing board’s firmware version and application config before shipment, so you have a fallback if your new board needs the same image.
- Direct Drop-In: Matches existing Mark VIe backplane pinout and VME slot spacing. No mechanical modifications required—your cable harnesses and I/O terminations stay untouched.
Frequently Asked Questions (FAQ)
Q: What is the difference between IS200VPROH1B and IS200VPROH2B?
A: The H2B has double the memory—128 MB SDRAM vs. 64 MB, and 64 MB total flash vs. 32 MB. This allows larger applications, more data logging, and faster execution. The H2B also requires Mark VIe Toolkit v6.2 or higher, whereas H1 boards can run on v5.8 and up. If your application is memory-constrained or you’re adding advanced features, the H2B is the right choice. If you’re just replacing a failed H1 board with the same application, the H1 is sufficient.
Q: Can I replace my H1 board with an H2B without changing my application?
A: Yes, but with a caveat. The H2B will run your existing application if it was compiled for the Mark VIe Toolkit v6.0 or v6.1. However, you won’t benefit from the extra memory unless you recompile your application to use it. Also, if your application was compiled for v5.8 or older, it will not boot on the H2B—you’ll need to upgrade your toolkit and recompile. We strongly recommend checking your firmware version before ordering.
Q: What is the power draw difference between H1 and H2?
A: The H2B draws approximately 3.5 A at 5 VDC (17.5 W) vs. 3.2 A (16 W) on the H1. That’s a 1.5 W increase—within the Mark VIe backplane’s capacity, but if your rack is heavily loaded with I/O modules, you should calculate your total backplane load and ensure you have at least 20% margin. We’ve seen sites with fully populated racks experience voltage droop when upgrading to H2 without checking power budgets.
Q: Is this board hot-swappable?
A: No. The Mark VIe VME backplane does not support live insertion. You must de-energize the rack, ground yourself, and wait 30 seconds for bulk capacitors to discharge. We’ve seen field crews try to pull a VPRO while the cabinet was still on auxiliary power—it took out the backplane driver chips. Don’t risk it.
Q: How do I know this isn’t a counterfeit or a refurbished board sold as “new”?
A: We photograph each unit’s OEM packaging, serial number label, and anti-static bag before shipment. You’ll receive those images with your packing slip. Also, our QC process includes a visual inspection against GE’s known PCB marking standards—copper trace thickness, solder mask color, and component date codes. H2B boards have distinct memory chip layouts and part numbers; we verify these against GE’s BOM. Counterfeits usually have mismatched font styles or incorrect component part numbers. We reject about 12% of inbound stock for that alone.
Q: Will I lose my turbine protection settings when I replace the board?
A: Yes and no. Application logic and setpoints are stored in the application flash and in the separate memory on the I/O boards, not primarily on the VPRO. However, the VPRO does hold the executive firmware and the boot configuration. If your old board is dead and you can’t extract the configuration, we can send you a blank board and you’ll need to reload from your backup file (.hex or .bin). If you don’t have a backup, we can, in some cases, transplant the flash ICs—but that’s a last-resort service, not covered under standard warranty.
Q: What is the typical lead time for this part?
A: We stock these on the shelf—usually ship within 24 hours of order placement and payment confirmation. For international orders, add 3–5 days for customs. If you need expedited (overnight air), we can do that, but you’ll need to coordinate with our logistics team for the cut-off time.
Q: Does this board work with the newer Mark VIeS (SIL-rated) cabinets?
A: To be direct: no. The IS200VPROH2B is not SIL-certified. It’s meant for standard Mark VIe industrial control. The SIL-rated systems use the IS220VPRO (with different component ratings and a separate safety watchdog). Mixing them violates your site’s safety integrity level. If you’re in a SIL environment, we can source the correct variant but it will have a different model number and longer lead time.
Q: What’s your return policy if it doesn’t solve my fault code?
A: If the board is electrically functional (passes our QC test) but doesn’t clear your turbine fault, we’ll accept a return within 30 days provided the board is still in anti-static packaging and shows no physical damage. We do charge a 15% restocking fee if the fault was due to your application mismatch (e.g., wrong firmware version). We’ll work with you over the phone or email to diagnose the fault before we ship, so we can avoid that scenario. Our goal is to get you running, not to ship boxes back and forth.

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