Product Core Brief
- Model: IS200TCASH1ACB
- Brand: GE
- Series: Mark VI / Speedtronic IS200
- Core Function: Conditions and routes analog turbine signals between terminal boards and Mark VI I/O packs.
- Product Type: Analog I/O board
- Key Specs: 4–20 mA I/O | LVDT/LVDR position | Thermocouple inputs | ±10 V DC | Relay driver outputs
- Condition: New Original (New Surplus) / Factory Sealed
Product Introduction (Rotation Engine)
Unplanned turbine trips often trace back to unstable analog inputs rather than failed processors. The sits between field sensors and the Mark VI I/O core, scaling and conditioning signals so control logic receives clean, consistent data. It supports LVDT/LVDR position feedback, thermocouple inputs, 4–20 mA loops, ±10 V DC signals, pulse inputs, relay driver outputs, and generator/line signals used in gas and steam turbine control.
For procurement teams, this board matters because it protects uptime. Replacing a drifted or damaged analog I/O board before commissioning avoids loop calibration delays, false trips, and extended outage windows. Using an OEM-verified keeps the existing Mark VI architecture intact, which reduces engineering change risk and shortens acceptance testing.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | GE |
| Model | |
| Product Type | Analog I/O Board |
| Control System | GE Mark VI / Speedtronic IS200 |
| Application | Gas/steam turbine analog signal conditioning |
| Signal Conditioning | 4–20 mA, ±10 V DC, thermocouple, pulse, LVDT/LVDR |
| Outputs | Relay driver outputs, servo valve interface signals |
| Connectors | 2PL, 3PL, JE, JF, JG, JB, JD |
| Architecture | Works with Mark VI I/O core and terminal boards |
| Data Path | Conditioned signals routed via 3PL to core bus |
| Country of Origin | USA |
| Condition | New Original (New Surplus) / Factory Sealed |
Key Selling Points & Differentiators
- Direct OEM replacement for GE Mark VI analog I/O applications.
- Supports critical turbine signals: LVDT/LVDR, 4–20 mA, thermocouple, ±10 V DC, and relay drivers.
- Factory-sealed surplus reduces installation risk versus unknown used boards.
- Compatible with existing Mark VI terminal boards and I/O core wiring.
- Suitable for gas turbine, steam turbine, and generator control retrofits.
- Not recommended for Mark V TCQA direct substitution without GE documentation confirmation; connector pinouts and firmware behavior may differ.
Quality Transparency SOP (DYNAMIC GENERATION)
- Visual inspection under magnification for corrosion, cracked solder joints, connector pin damage, and conformal-coat defects.
- Connector verification for 2PL, 3PL, JE, JF, JG, JB, and JD interfaces to confirm seating, pin alignment, and absence of bent contacts.
- Analog channel validation using a Fluke calibrator and precision source to verify 4–20 mA, ±10 V DC, thermocouple, and LVDT signal paths.
- Insulation and continuity checks on I/O traces and connector grounds to prevent noise coupling into turbine control loops.
- Anti-static bag sealing with tamper-evident label after final QA; storage in dry, ESD-controlled inventory.
Technical Risk Avoidance (DYNAMIC GENERATION)
❗ Confirm the Mark VI I/O pack firmware and slot configuration before installing . A mismatched firmware revision can cause channel mapping errors or failed diagnostics.
❗ Verify terminal board compatibility. This analog board must match the connected TB-style terminal boards and cable harnesses; incorrect wiring can damage sensor loops.
❗ Check backplane power and slot assignment. Do not force the board into an incompatible VME/I/O slot without confirming pinout and keying.
❗ Document channel scaling before commissioning. LVDT, 4–20 mA, and thermocouple ranges must match the turbine application database.
Buyer’s FAQ
1. Is IS200TCASH1ACB a genuine GE part?
Yes. This is an OEM GE Mark VI analog I/O board. We supply new original surplus units unless otherwise stated.
2. What is the lead time?
In-stock units typically ship within 1–2 business days after payment confirmation. Lead times change with inventory, so confirm availability before planning an outage.
3. Is this new surplus or refurbished?
This listing is for new original surplus, factory-sealed when available. Refurbished units are a different inventory category and should not be mixed without explicit approval.
4. Can IS200TCASH1ACB replace older Mark VI analog boards?
Often yes, but only after verifying model suffix, connector layout, terminal board pairing, and firmware compatibility. Do not assume cross-compatibility by series name alone.
5. What warranty is offered?
Standard warranty is 12 months from shipment for new original surplus boards, covering manufacturing defects and DOA failures. Damage from incorrect installation, wiring errors, or power surges is excluded.
