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Phone: +86 16626708626Description
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Function | Voltage feedback attenuation and scaling |
| Input Voltage Range | Supports 1200 V to 6900 V configurations |
| Configuration | Stab connectors and wire jumpers (G2 variant) |
| Channels | Multiple VLG and VLL inputs |
| Operating Temperature | -30 to 65°C (typical for Mark V series) |
| Series Compatibility | Mark V turbine control and LS2100 LCI systems |
| Board Type | NATO Group 2 |
| Power | Backplane powered from control rack |
| Dimensions | Approx. 8.26 x 4.18 x 4.62 cm (board footprint) |
| Application | SCR bridge voltage feedback in static starters |
4. Product Introduction
The GE DS200NATOG2A is a Voltage Feedback Scaling Board (NATO Group 2) used in GE Speedtronic Mark V control systems and LS2100 static starters. It attenuates and scales high AC and DC voltages from the SCR bridge to safe levels for the control processor.
Technicians choose this board for reliable voltage monitoring in LCI applications on gas and steam turbines. It provides configurable scaling through stab connectors and jumpers, ensuring accurate feedback without overloading downstream electronics. In field use, it maintains signal integrity across varying system voltages.
- DS200NATOG2A
- DS200NATOG2A
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Incorrect voltage readings in HMI | Scaling misconfiguration | ✅ High | Verify stab connectors and jumper positions match system voltage | Reconfigure jumpers to match required attenuation |
| No voltage feedback signal | Board failure or loose cable | ✅ High | Measure input voltages at terminals; check output to controller | Replace DS200NATOG2A if inputs present but outputs absent |
| Erratic or noisy feedback | Damaged attenuators | ✅ Medium | Use multimeter or scope on scaled outputs | Inspect board for physical damage; replace if needed |
| Overvoltage alarms | Wrong scaling range selected | ✅ High | Confirm system voltage rating vs board configuration | Adjust jumpers; verify with OEM wiring diagram |
| No board response on power-up | Backplane power issue | ❌ Low | Check 24 V DC supply at rack connectors | Verify rack power before replacing scaling board |
Contact technical support with photos of board configuration, voltage measurements, and diagnostic logs if problems remain after these checks.
6. Frequently Asked Questions (FAQ)
Is the DS200NATOG2A hot-swappable? No. Power down the Mark V rack and LCI system before removal or installation. Live swapping can damage the board or corrupt feedback signals to the controller.
What condition is this unit in? New Original / New Surplus. These boards come from OEM spare inventory and receive full functional testing on our Mark V/LS2100 simulation setup before shipment. No field wear.
Will this board work as a direct replacement? It serves as a direct replacement for compatible Mark V and LS2100 systems. Confirm your exact voltage range and existing jumper settings. Take clear photos of the old board’s stab connectors and jumpers before swapping.
How do you test these boards? We apply simulated AC/DC voltages matching common turbine applications, verify scaled outputs, check all input channels, and run continuous monitoring tests. Insulation resistance and visual inspections are part of the process. Test data available upon request.
What voltage ranges does it support? The G2 variant supports multiple ranges from 1200 V up to 6900 V through specific stab connector and wire jumper combinations. Always match the configuration to your SCR bridge voltage. Refer to the system drawings for exact settings.
Is firmware or software configuration required? No onboard firmware on this scaling board. It is passive signal conditioning. No programming needed — just proper hardware jumper setup. The control processor handles the scaled signals directly.
What if my current board has a different revision? Send us the full part number and photos of your existing NATO board. We verify compatibility and can source the exact match or confirmed equivalent. Most G2 variants interchange with proper configuration.
