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GE IS220YTCCS1A
Product Name: Mark VIe YTCC Millisecond Analog Module (Thermocouple Input Pack)
Product Introduction: This is a highly specialized simplex I/O pack developed for the GE Mark VIe platform. While some sources describe it as monitoring shaft voltage/current for turbine health diagnostics, the predominant configuration is a high-precision thermocouple input module that interfaces specialized analog turbine sensors with the IONet control fabric.
Detailed content
Technical Specifications:
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Module Type: Simplex Turbine Complementary Control (YTCC) I/O Pack / Thermocouple Input Pack
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Input Channels: 12 differential thermocouple input channels (or dedicated shaft voltage/current monitoring inputs)
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Supported Thermocouple Types: E, J, K, S, T (some configurations: E, J, K, N, R, S, T)
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mV Input Span: -8 mV to 45 mV
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A/D Conversion: 16-bit resolution with millisecond-level sampling
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Scan Time: 120 scans per second per input
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Network Interfaces: 2 × 100Base-TX RJ45 Ethernet Ports (IONet Redundancy)
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Nominal Supply Voltage: 28.0 VDC (accepts 18.0 to 32.0 VDC)
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Power Consumption: Maximum 415 mA at 28 VDC
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Compatible Terminal Board: STCCS1A, STCCS1B (or TBTCS1C for dual-board 24 TC support)
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Isolation Barrier: Galvanic isolation up to 1500 V RMS between field and logic
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Operating Temperature: -30°C to +65°C (-22°F to +149°F)
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Form Factor: Ruggedized cast metal envelope for direct terminal board mounting
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Associated Manual: GEH-6721
Key Features: Dual redundant IONet communication; 16-bit high-accuracy analog processing; millisecond-level sampling; internal cold-junction compensation; hot-swappable capability; advanced diagnostics (open-circuit detection, cold-junction health).
Application Scenarios: Heavy-duty gas and steam turbine monitoring; turbine exhaust gas temperature (EGT) tracking; bearing temperature control; generator shaft voltage/current monitoring for predictive protection against bearing degradation.
