Description
Product Parameters
| Parameter | Specification |
|---|---|
| Brand / Series | GE Mark VIe Speedtronic |
| Model | IS200TRLYH2C |
| Relay Outputs | 32 isolated channels (Form C, SPDT) |
| Contact Rating | 8A @ 250 VAC / 30 VDC (resistive load) |
| Switching Voltage | 250 VAC / 30 VDC maximum |
| Switching Current | 8A maximum per channel |
| Inrush Capability | 15A for 50 ms (motor/inductive loads) |
| Coil Voltage | 24 VDC (internally supplied from Mark VIe rack) |
| Coil Current | 40 mA per relay (1.28 A total maximum) |
| Response Time | < 8 ms (energize), < 4 ms (de-energize) |
| Electrical Life | 150,000 operations at rated load |
| Mechanical Life | 1,500,000 operations (no load) |
| Suppression | Built-in flyback diodes (DC loads), RC snubbers (AC loads), and MOV (transient suppression) |
| Isolation | 2000 VAC (channel-to-channel and field-to-system) |
| Diagnostics | Coil open-circuit detection, coil short-circuit detection, welded contact monitoring, contact wear monitoring, reference validation |
| Status Indication | 32 green LEDs (output energized), 32 red LEDs (fault per channel), 2 red summary fault LEDs, 1 yellow LED (reference/calibration status) |
| Operating Temperature | –40°C to +70°C |
| Storage Temperature | –55°C to +85°C |
| Mounting | VME rack-mount terminal board with front-panel I/O connectors |
| Backplane Interface | VME64x (A24/A32, D16/D32/D64) |
| EMC Compliance | IEC 61000-4 Level 4 |
Advantages & Key Features
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High Channel Density: 32 isolated relay outputs in a single VME slot—providing double the channel count of IS200TRLYH1B (16 channels) and 33% more than IS200TRLYH1C (24 channels). Ideal for large turbine systems with extensive actuator control requirements.
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High Contact Rating: 8A per channel with 15A inrush capability enables direct control of large solenoids, contactors, and valve actuators.
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Extended Temperature Range: –40°C to +70°C operation makes IS200TRLYH2C suitable for extreme environments.
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Enhanced Isolation: 2000 VAC isolation provides superior protection for the Mark VIe backplane.
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Enhanced Suppression: Integrated flyback diodes, RC snubbers, and MOVs protect relay contacts and driver circuits.
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Fast Response: < 8 ms energize and < 4 ms de-energize times ensure precise control.
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Comprehensive Diagnostics: Coil open/short, welded contact, wear monitoring, and reference validation.
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High-Density Status Indication: 32 green/red LEDs enable rapid on-site troubleshooting.
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ToolboxST Integration: Full configuration, monitoring, and diagnostics via GE ToolboxST.
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Drop-In Replacement: Direct replacement for IS200TRLYH1D, IS200TRLYH1C, and earlier relay output terminal boards.
Application Fields
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Gas & Steam Turbines (GE Frame 6B/7EA/9E/HA): Fuel gas shut-off valves, emergency stop solenoids, alarm annunciators, lube oil pump starters, generator breaker trip coils, cooling fan starters, auxiliary system actuators.
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Combined Cycle Plants: Steam turbine extraction valves, bypass actuators, HRSG damper controls, condensate pump starters.
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Compressor Stations: Anti-surge valve solenoids, discharge blow-down valves, station shutdown relays.
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Arctic & Desert Installations: Extreme-environment actuator control.
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Nuclear Power Plants: Critical actuator control requiring documented diagnostics and reference validation.
Comparison with Competing Products
| Feature | GE IS200TRLYH2C | GE IS200TRLYH1D (32-ch) | GE IS200TRLYH1C (24-ch) | GE IS200TRLYH1B (16-ch) | Competitor A (Relay Output) | Competitor B (Relay Module) |
|---|---|---|---|---|---|---|
| Relay Outputs | 32 isolated | 32 isolated | 24 isolated | 16 isolated | 8 isolated | 8 isolated |
| Contact Rating | 8A (15A inrush) | 8A (15A inrush) | 8A (15A inrush) | 8A (15A inrush) | 5A | 2A |
| Suppression | Flyback, RC, MOV | Flyback, RC, MOV | Flyback, RC, MOV | Flyback, RC, MOV | External required | External required |
| Diagnostics | Coil open/short, welded, wear, reference | Coil open/short, welded, wear, reference | Coil open/short, welded, wear | Coil open/short, welded, wear | Coil open only | None |
| Isolation | 2000 VAC | 2000 VAC | 1500 VAC | 1500 VAC | 1000 VAC | 500 VDC |
| Operating Temp | –40°C to +70°C | –40°C to +70°C | –30°C to +65°C | –30°C to +65°C | 0°C to 50°C | 0°C to 60°C |
| Reference Validation | Yes | Yes | No | No | No | No |
Key Advantage: IS200TRLYH2C delivers 32 isolated relay outputs with 8A contact rating, 15A inrush capability, 2000 VAC isolation, extended –40°C to +70°C temperature range, and comprehensive diagnostics including reference validation—making it a premier solution for large turbine systems requiring high-density, high-current actuator control in extreme environments.
Selection Guidelines & Recommendations
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Channel Count: 32 relay outputs per board—ideal for large turbine systems.
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Contact Rating: Confirm load requirements do not exceed 8A @ 250 VAC or 8A @ 30 VDC. For inductive loads, de-rate to 5A.
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Inrush Capability: 15A for 50 ms—verify load inrush does not exceed this.
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Load Protection: For highly inductive DC loads, add external varistors.
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Diagnostic Configuration: Enable welded contact, wear monitoring, and reference validation for critical safety circuits.
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Controller Firmware: Requires Mark VIe processor firmware v9.0 or later.
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Spare Strategy: Keep one spare per turbine; lead times 8–14 weeks.
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Retrofit: Direct replacement for IS200TRLYH1D, IS200TRLYH1C, and IS200TRLYH1B—regenerate configuration in GE ToolboxST for 32-channel mapping.
Important Cautions
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No Hot-Swap: De-energize rack before insertion/removal.
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Wiring Polarity: For DC loads, observe correct polarity—reverse polarity shorts through the flyback diode.
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Contact Protection: For loads exceeding 8A, use external contactors.
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Grounding: Connect chassis ground at single star point.
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Shield Termination: Ground output cable shields only at cabinet end.
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ESD Handling: Use grounded wrist straps; field repair not possible.
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Temperature Rating: Verify cabinet ambient does not exceed +70°C or fall below –40°C.
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Reference Validation: Yellow LED indicates reference drift—schedule factory recalibration if illuminated.
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Welded Contact Detection: Refer to GE wiring diagram IS200TRLYH2C-DWG.
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Wear Monitoring: Set operational thresholds in GE ToolboxST for maintenance alerts.
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Power Supply: Ensure adequate current for all active outputs (40 mA × 32 = 1.28 A max).
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Channel Mapping: With 32 channels, verify field wiring maps to correct ToolboxST channel numbers.
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