GE IS200VRTDH1DAB is a dedicated Resistance Temperature Detector (RTD) input board for the Mark VI control system, designed specifically for high-precision temperature measurement. It converts the analog signals from RTD sensors into digital data, which is then transmitted to the control system via the VME backplane. This board supports 16 channels of 3-wire RTD inputs and is equipped with functions including signal conditioning, cold-junction compensation, and fault detection. It is compatible with both simplex and TMR (Triple Modular Redundancy) configurations, and is widely used for temperature monitoring in industrial scenarios such as gas/steam turbines and petrochemical processing.
Technical Specifications
It features 16 channels of 3-wire RTD inputs, compatible with TRTD/DRTD terminal boards. The A/D resolution is 14 bits. The excitation current is 10mA DC multiplexed (non-continuous). The voltage output range is 0.3532–4.054V. The scanning rate is 1 scan per second in normal mode and 25 scans per second in fast mode. Power consumption is maximum 4.6W, typical 10.5W and ≤12W. The operating temperature ranges from -22°F to +150°F (-30°C to +65°C), and the storage temperature ranges from -40°F to +185°F. It supports simplex and TMR configurations; in TMR mode, input fan-out redundancy is achieved via three VRTD boards installed on R/S/T racks. Fault detection functions include open/short circuit identification, as well as automatic masking and periodic recovery of out-of-range signals.
Core Functions and Working Principles
Application Scenarios and Advantages
- High Precision: 14-bit A/D conversion and linearization compensation deliver a measurement accuracy of ±0.1% FS.
- High Reliability: Redundant design combined with fault isolation enables stable operation in industrial environments ranging from -30°C to +65°C with 95% non-condensing humidity.
- Easy Integration: Plug-and-play VME architecture, fully compatible with the Mark VI ecosystem, shortens project implementation cycles.
- Low Power Consumption: The ≤12W design reduces overall system energy consumption and heat dissipation requirements.
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