IS200VSVOH1BDC GE

Key Specifications

Advantages & Distinctive Features

• 16 High-Capacity Outputs: Controls up to 16 solenoids/actuators per module—reduces rack space and cost.

• High Inrush Capability: 6 A for 150 ms handles demanding solenoid loads and long-cable capacitive inrush.

• Improved Current Monitoring: ±5% accuracy enables precise detection of solenoid degradation (increased coil resistance) and predictive maintenance.

• Wire-Break Detection: Identifies open circuits in field wiring—prevents unexpected valve failures.

• Reverse Polarity Protection: Protects module from field power wiring errors—reduces installation risk.

• Conformal Coating Standard: UV-traceable coating protects against humidity, salt spray, and chemical vapors—suitable for coastal, offshore, and industrial environments.

• Extended Temperature Range: –25 °C to +70 °C operation—suitable for unheated cabinets and harsh environments.

• 1000-Event Fault Log with waveform snapshots—enables comprehensive post-event analysis.

• Captive Washer Terminals: Prevents screw loosening due to vibration—essential for turbine control cabinets.

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

• Direct Retrofit: Replaces all VSVOH1A and VSVOH1B series boards.

Application Fields

• Gas Turbines: Trip solenoids, fuel shut-off valves, purge/drain valves, start-up bleed valves, liquid fuel dump valves

• Steam Turbines: Emergency stop valves (ESV), control valve trip solenoids, extraction valves, drain valves

• Compressors: Anti-surge blow-off valves, suction/discharge isolation valves, vent valves

• Generators: H2 supply shut-off valves, seal oil system valves, CO2 fire suppression valves

• Combined Cycle: HRSG drain valves, feedwater isolation valves, blowdown valves

• Offshore Platforms: Salt-spray environments requiring conformal coating

• Marine: Fuel isolation valves, ballast valve controls

• Chemical Processing: Corrosive environments benefiting from conformal coating

Comparison with Competing Products

The GE IS200VSVOH1BDC offers superior current handling, diagnostics, and environmental protection compared to competitors—making it the ideal choice for demanding solenoid valve control in harsh environments.

Selection Guidelines

• When to choose:

  • Critical solenoid/isolation valve control requiring high reliability

  • Harsh environments (coastal, offshore, chemical, high-humidity)

  • Solenoids with high inrush current (>5 A)

  • Applications requiring predictive maintenance (current trending)

  • Vibration-prone installations (captive washer terminals)

  • Wide temperature variation environments (–25 to +70 °C)

• When to upgrade from H1A/H1B: Replace existing boards with GE IS200VSVOH1BDC when conformal coating, extended temperature range, or expanded fault logging is required.

• Load Verification: Verify solenoid inrush ≤6 A, holding ≤2.5 A per channel. Total module current ≤16 A.

• Field Power: Provide dedicated 24 VDC power supply with capacity for all solenoids simultaneously (16 A max).

• Wiring: Use 16–18 AWG for 2.5 A loads; use shielded cables for long runs.

• Coating Verification: Inspect under UV (365 nm) upon receipt—uniform fluorescence indicates proper coating application.

• Compatibility: Fits all Mark VIe VME64x racks. Requires processor board (VPRO series) with I/O Net connectivity and ControlST v6.5 or higher for full features.

Operational Precautions

1. Wiring: Follow GE wiring diagrams (GEH-6816)—correct polarity for external field power. Use shielded cables; ground shield at terminal board only.

2. Field Power: Properly size and fuse external 24 VDC supply (20 A fast-acting fuse recommended). Do not power solenoids from backplane.

3. Load Monitoring: Use Toolbox ST to view per-channel current readings. Establish baseline—trend increasing current (10%+ over baseline) indicates solenoid wear.

4. Wire-Break Detection: Test by disconnecting a field wire to verify alarm generation.

5. Short-Circuit Test: Simulate short to verify auto-shutdown and auto-retry (3 attempts) functionality.

6. LED Diagnostics: Green = output on; Amber = output off with fault; Red = module fault. Refer to GEH-6816 for blink code table.

7. Fault Log: Access 1000-event log via Toolbox ST for post-event analysis.

8. Coating Care: Use GE-approved cleaner; avoid solvents that dissolve coating. Inspect annually under UV—rework voids with approved coating per GE FSB.

9. Hot-Swap: Remove/insert slowly under power—processor auto-recognizes new module.

10. Spare Stock: Maintain 1 spare per 3–4 racks; “BDC” backward-compatible with all VSVOH1 sockets.

11. Annual Verification: Cycle solenoids during outages; monitor current and response times. Compare to baseline.

12. Thermal Derating: Above 60 °C, reduce total output current to 12 A max.

13. ESD: Handle by edges only with grounded wrist strap—coating does not protect connectors.

14. Storage: Anti-static bag with desiccant at –40 to +85 °C; rotate every 3 years for coating inspection.