IS200WDIIH3A GE

Key Specifications

Advantages & Distinctive Features

• High I/O Density: 16 inputs and 16 outputs in a single module—reduces rack space and wiring complexity.

• Optical Isolation: 1500 VDC isolation protects the backplane and processor from field wiring faults.

• Configurable Input/Output Types: Per-bank configuration for sourcing (PNP) or sinking (NPN) accommodates different field device wiring standards.

• Output Diagnostics: Per-channel load current monitoring detects short circuits, open circuits, and degraded loads.

• Input Status Feedback: Provides actual input state to the processor for sequence verification and diagnostics.

• Inductive Load Clamping: Built-in flyback diodes protect outputs from voltage spikes when de-energizing inductive loads.

• Short-Circuit Protection: Auto-shutdown with auto-retry prevents module damage from wiring faults.

• Captive Washer Terminals: Prevents screw loosening due to vibration.

• Hot-Swappable: Supports removal and replacement without powering down the rack.

• Direct Retrofit: Replaces older WDI series boards.

Application Fields

• Gas Turbines: Valve position feedback, limit switches, solenoid control, alarm annunciation

• Steam Turbines: Trip system status, valve limit switches, drain valve control

• Compressors: Surge control valve status, isolation valve control

• Generators: Breaker status, synchronizing control, alarm annunciation

• Balance of Plant: Pump control, fan status, filter differential pressure switches

• Marine: Fuel system status, ballast valve control

Comparison with Competing Products

The GE IS200WDIIH3A offers superior I/O density, configurability, output diagnostics, and fault logging compared to competitors—making it the ideal solution for comprehensive digital I/O in a single VME slot.

Selection Guidelines

• When to choose: Any Mark VIe application requiring mixed digital I/O—gas turbines, steam turbines, compressors, generators, or balance of plant.

• Input Configuration: Select sourcing (PNP) for most European sensors; select sinking (NPN) for legacy or Asian sensors. Configure per bank (8 channels) for flexibility.

• Output Configuration: Select sourcing (PNP) or sinking (NPN) per bank to match field device wiring. Ensure external 24 VDC field power is available.

• Output Load Verification: Verify each output load ≤0.5 A continuous; ≤1.0 A inrush. Total output current ≤8 A.

• Field Power Supply: Provide a dedicated 24 VDC power supply with capacity for all outputs simultaneously.

• Wiring: Use appropriate wire gauge (18–20 AWG) for output loads; use shielded cables for long input runs.

• Compatibility: Fits all Mark VIe VME64x racks. Requires ControlST v6.0 or higher.

Operational Precautions

1. Wiring: Follow GE wiring diagrams (GEH-6890)—correct polarity for external field power. Use shielded cables for inputs in electrically noisy environments.

2. Field Power: Properly size and fuse external 24 VDC supply (10 A fuse recommended). Do not power outputs from backplane.

3. Output Load Monitoring: Use Toolbox ST to view per-channel current readings—trend increasing current indicates load degradation.

4. Short-Circuit Testing: Simulate short on an output channel to verify auto-shutdown and auto-retry (3 attempts) functionality.

5. Input Testing: Test each input by simulating field device activation—verify state change in Toolbox ST.

6. LED Diagnostics: Green = input/output on; Amber = output fault; Red = module fault. Refer to GEH-6890 for blink codes.

7. Fault Log: Access 500-event log via Toolbox ST for post-event analysis.

8. Hot-Swap: Remove/insert slowly under power—processor auto-recognizes new module and restores output states.

9. Spare Stock: Maintain 1 spare per 3–4 racks; “H3A” backward-compatible with older WDI sockets.

10. Annual Verification: Cycle each input and output during outages; verify response times and current draw.

11. Firmware Updates: Ensure the GE IS200WDIIH3A is in “standby” mode during updates.

12. ESD: Handle by edges only with grounded wrist strap.