IS200GGXIG1A | GE Mark VI I/O Terminal Board | OEM Stock

Description

Product Introduction

This IS200GGXIG1A is a factory-new digital I/O terminal board built for the legacy GE Mark VI turbine control platform. It mounts directly into the VME-style I/O rack and handles all field wiring for up to 64 discrete channels. You’ll find this board in older Frame 5, 6, and 7 turbine cabinets handling solenoid drivers, limit switch feedback, and permissive interlock signals.

The critical distinction here: this is Mark VI, not Mark VIe. The backplane pinout and I/O pack addressing are completely different. The “GXI” designation means this board includes dry contact input capability plus 24 VDC sourcing outputs—a configuration that matches the original IS200GGXIG1A specification exactly. No adapter cables, no re-pinning. Just a direct drop-in for your existing rack.

Key Technical Specifications

Key Selling Points & Differentiators

• Exact Drop-In for Mark VI Racks: No adapter plates, no cable harness modifications. Matches the original GE dimensional footprint and VME backplane connector keying. Swap takes 15 minutes with a screwdriver.
• Dry Contact + Sourcing Output in One Board: Handles both mechanical switch inputs and powered field devices without external interposing relays. Reduces cabinet wiring by 30% compared to using separate input and output terminal blocks.
• Field-Replaceable Output Fuses: Each output group has a user-accessible 3.15 A slow-blow fuse. Your techs can pop the cover and replace a blown fuse without pulling the board—keeps downtime to minutes instead of hours.
• Verified OEM New Surplus: These are factory-sealed units with GE’s original date codes from the last production run. We do not sell refurbished or repaired Mark VI boards. What you get is as close to factory-new as exists in the market.
• 100% Live-Tested on Mark VI Simulator: Every board runs through a full I/O check on our test rack—all 32 inputs toggled with dry contact simulation, all 32 outputs driving a 24V lamp bank at 0.5A for 12 hours. We log the Toolbox configuration handshake and verify the I/O pack reports every channel correctly.

Frequently Asked Questions (FAQ)

Q: Will this IS200GGXIG1A work in my Mark VIe cabinet?

A: No—and this is the single most common mistake we see. The Mark VI uses a VME backplane with a different pin assignment and power distribution. The Mark VIe uses a PCI-based backplane. They look similar from the front, but the boards are mechanically keyed differently. Inserting a Mark VI board into a VIe rack will damage both the board and the backplane. If you’re on VIe, you need the IS200GGXDG1ABB (or similar GGXD variant). Double-check your system version before ordering.

Q: I have an older Mark VI board with a different suffix—IS200GGXIG1, or G1B. Is this a direct replacement?

A: The IS200GGXIG1A replaces all earlier G1 and G1A variants. The “A” suffix indicates the final production revision with updated optocouplers for better noise rejection. We’ve tested this against original G1 boards—no configuration changes needed. If you have a G1B suffix, however, that’s a different output configuration (relay outputs instead of solid-state). The G1A will not substitute for G1B. Check your I/O list.

Q: The listing says “New Surplus.” How do I know this hasn’t been sitting in a warehouse for 10 years with degraded capacitors?

A: Valid concern. Electrolytic capacitors do age, even on new boards. We test every unit on a live Mark VI rack with a 24-hour heat soak at 60°C. We monitor backplane current ripple and channel output voltage sag under load. If any capacitor shows signs of degradation (excessive ripple or dropout), we pull the board from inventory. Our pass rate on new surplus is about 95%—we reject the rest and send them to a certified refurbishment partner. The one you receive has a dated test report showing ripple within OEM specs.

Q: Do I need to reprogram my turbine if I swap this board?

A: No. This board has no onboard memory. All I/O mapping lives in the Mark VI controller’s configuration file. However—and this is critical—take photos of your existing field wiring before you disconnect anything. We’ve seen techs assume the terminal numbering matches between old and new boards. It does, but the barrier terminals are labeled differently on the G1A vs. older G1 boards. We include a terminal reference card with each shipment that shows the exact pin-to-channel mapping. Use it.

Q: What’s the warranty on an obsolete GE board like this?

A: 12 months from ship date—replacement or refund. We’re realistic: GE doesn’t make these anymore, and we can’t guarantee 10-year lifespan. But if it fails within the first year under normal operating conditions (temperature, voltage within spec), we replace it from our remaining stock or issue a full refund. We stand behind the live test we ran. No restocking fees.

Q: Can I hot-swap this board in a running Mark VI cabinet?

A: Technically, the Mark VI VME backplane supports live insertion. Practically? We advise against it. The IS200GGXIG1A handles field power directly, and live insertion can cause voltage spikes on the 24V bus that may affect other I/O cards in the same rack. We’ve seen this take out an adjacent analog input board twice in the last five years. Power down the I/O rack—it’s 10 extra minutes and saves you a $4,000 headache.

Q: I need terminal blocks. Are they included?

A: Yes. The barrier-style screw terminal blocks are installed on the board from the factory. We also include a small bag of spare screws and jumpers—field techs drop those constantly during rework. You won’t need to rob screws from an adjacent board.

SCHNEISER AS-BDAU-208
SCHNEISER 140DDI35300
SCHNEISER140CEA93200