GE IS200VAOCH1A

¥999.00

IS200VAOCH1A is a Terminal Board within the GE Mark VIe Speedtronic control system, designed as a field termination and signal conditioning interface for analog output signals in turbine control applications. This board provides centralized termination for analog actuators such as control valves, positioners, variable frequency drives, and other analog-controlled field devices, connecting to the Mark VIe main VME-based controller processors via front-panel I/O cables. The IS200VAOCH1A features integrated termination points for analog outputs with built-in signal conditioning including filtering, isolation, and diagnostics. It offers 16 isolated analog output channels with flexible output configuration and comprehensive diagnostics.

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Description

Product Parameters

Parameter Specification
Brand / Series GE Mark VIe Speedtronic
Model IS200VAOCH1A
Analog Outputs 16 isolated channels
Output Types 4–20 mA or 0–10 V (software-selectable per channel)
Output Range 0–20 mA, 4–20 mA, 0–5 V, 0–10 V
DAC Resolution 16-bit with programmable update rate (1–1000 SPS)
Accuracy ±0.1% FS (25°C), ±0.2% over full temperature range
Load Impedance 0–750 Ω (current mode), > 2 kΩ (voltage mode)
Current Limit 25 mA per channel (short-circuit protected)
Filtering Programmable low-pass filter (1–50 Hz)
Isolation 1500 VAC (field-to-system)
Diagnostics Open-circuit detection, short-circuit detection, over/under-range monitoring
Status Indication 16 green LEDs (channel active), 2 red LEDs (diagnostic fault summary)
Operating Temperature –30°C to +65°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

  • High Channel Density: 16 isolated analog outputs in a single VME slot—double the density of competing 8-channel modules.

  • Flexible Output Configuration: Each channel supports 4–20 mA or 0–10 V outputs via GE ToolboxST.

  • High Resolution: 16-bit DAC provides precise control for critical turbine parameters.

  • Programmable Filtering: Onboard low-pass filter (1–50 Hz) smooths output signals.

  • Comprehensive Diagnostics: Open-circuit, short-circuit, and over/under-range monitoring per channel.

  • Short-Circuit Protection: Each output is protected against short circuits and overcurrent conditions.

  • Opto-Isolation: 1500 VAC isolation protects the Mark VIe backplane.

  • ToolboxST Integration: Full configuration, calibration, and diagnostics via GE ToolboxST.

  • Drop-In Replacement: Direct replacement for earlier GE analog output terminal boards.

Application Fields

  • Gas & Steam Turbines (GE Frame 6B/7EA/9E/HA): Fuel gas control valves, steam admission valves, inlet guide vane positioners, bypass valves, actuator position control.

  • Combined Cycle Plants: HRSG feedwater control valves, bypass valve positioning, steam temperature control actuators.

  • Compressor Stations: Anti-surge valve control, recycle valve positioning.

  • Aeroderivative Turbines: Fuel control actuators, variable inlet guide vanes.

Comparison with Competing Products

Feature GE IS200VAOCH1A Competitor A (Analog Output Module) Competitor B (Analog Output Module)
Analog Outputs 16 isolated 8 isolated 8 isolated
Output Types 4–20 mA, 0–10 V 4–20 mA only 4–20 mA, 0–10 V
DAC Resolution 16-bit 14-bit 16-bit
Accuracy ±0.1% FS ±0.2% FS ±0.15% FS
Short-Circuit Protection Yes Yes No
Isolation 1500 VAC 1000 VAC 500 VDC
Operating Temp –30°C to +65°C 0°C to 50°C 0°C to 60°C

Key Advantage: IS200VAOCH1A provides 16 isolated analog outputs—double the density of competing modules—with flexible output configuration, 16-bit resolution, and comprehensive diagnostics, reducing rack space for turbine analog output applications.

Selection Guidelines & Recommendations

  • Output Type: Configure 4–20 mA or 0–10 V per channel in GE ToolboxST.

  • Load Verification: Ensure connected actuators do not exceed load impedance capability (0–750 Ω for current, > 2 kΩ for voltage).

  • Filtering: Use 1–10 Hz for smooth actuator response, 20–50 Hz for faster dynamic control.

  • Controller Firmware: Requires Mark VIe processor firmware v7.0 or later.

  • Spare Strategy: Keep one spare per turbine; lead times 6–8 weeks.

  • Retrofit: Direct replacement—regenerate configuration in GE ToolboxST.

Important Cautions

  1. No Hot-Swap: De-energize rack before insertion/removal.

  2. Output Polarity: Observe correct polarity for current loops.

  3. Short-Circuit Protection: While protected, sustained short circuits may cause thermal shutdown.

  4. Grounding: Connect AGND to Mark VIe system ground at single star point.

  5. Shield Termination: Ground output cable shields only at cabinet end.

  6. ESD Handling: Use grounded wrist straps; field repair not possible.

  7. Filtering Trade-Off: Higher filtering provides smoother output but introduces signal delay.

  8. Channel Mapping: With 16 channels, verify field wiring maps to correct ToolboxST channel numbers.

  9. Power Supply: Ensure rack power supply provides adequate current for all active outputs.

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