Description
Key Technical Specifications
- Product Model: IS200EPSMG2ADC
- Manufacturer: GE Fanuc / General Electric
- Product Type: Discrete IO / Power Module
- System Platform: Mark VI Speedtronic
- Input Voltage: 24V DC
- Output Frequency: 50/60 Hz
- I/O Points: 6 (Discrete/Control)
- Operating Temp: 0°C to 60°C
- Humidity: 5% to 95% (Non-condensing)
- Dimensions: 34 x 18 x 10 cm
- Weight: 0.20 kg
- Certification: UL Listed
Product Introduction
Your turbine is tripped, and the rack is dark. The IS200EPSMG2ADC is the power heart of your Mark VI control cabinet. It doesn’t just supply 24V; it monitors for ground faults and ensures the logic solver stays alive during grid transients. Without this module, your gas turbine is just a very expensive compressor.
Bottom line—this isn’t a generic DIN-rail power supply. It’s a safety-critical component with specific ground-fault impedance monitoring. Sourcing the exact IS200EPSMG2ADC revision is non-negotiable; a mismatched ground-fault threshold can cause nuisance trips or fail to clear a real fault. Get a tested unit with a 12-month warranty, not a “pulled” board from a scrap yard.
Troubleshooting Quick Reference
| Fault Symptom | Probable Cause | Relevancy | Quick Check | Fix |
|---|---|---|---|---|
| Rack Power LED Off | Input Fuse Blown | 80% | Measure 24V at terminal block | Check upstream breaker/fuse |
| Ground Fault Alarm | Wet Cable / Sensor | 90% | Megger field wiring to ground | Isolate harness sections |
| Intermittent Resets | Loose Backplane Pin | 70% | Reseat module / Inspect pins | Clean contacts / Replace |
| Overvoltage Trip | Regulator Failure | 50% | Measure output with scope | Replace IS200EPSMG2ADC |
| No Comm to HMI | Logic Solver Dead | 40% | Check CPU status LEDs | Check CPU, then Power Module |

GE IS200EPSMG2ADC
Application Scenarios & Pain Points
- Gas Turbine Power Plants: 24/7 baseload. A power module failure means a unit trip and potential grid penalty. The IS200EPSMG2ADC must handle dirty plant power without flinching.
- Offshore Platforms: Salt spray and vibration. Connectors on the IS200EPSMG2ADC are the weak link. Corrosion causes high-resistance joints that heat up and fail.
- Combined Cycle Plants: Fast-start requirements. The module must stabilize instantly during black-start sequences. Capacitor aging in legacy units causes slow ramp-up times.
- Industrial Cogeneration: Dirty harmonic-rich power. The internal regulators take a beating from VFD noise on the same bus.



