Description
GE HE693ADC410
Technical Specifications:
- Number of Channels: 16 single-ended or 8 differential
- Input Types: 4–20 mA, 0–20 mA, 1–5 V, RTD (Pt100, Pt1000, Cu50, Ni120), Thermocouple (J, K, T, E, N, R, S, B)
- Resolution: 16-bit A/D
- Accuracy: ±0.05% of span (typical)
- Isolation: 1500 VDC channel-to-ground
- Update Rate: 10 Hz per channel
- Power: ~3.5 W
- Operating Temp: -10°C to +70°C
Functional Features:
- Programmable per-channel input range
- Built-in linearization for thermocouple types
- Diagnostic LEDs for each channel group (4 channels per group)
- Supports remote calibration via controller software
- Fault detection for open circuit, short circuit, and out-of-range signals
Application Scenarios:
- Turbine exhaust temperature monitoring
- Bearing temperature measurement
- Generator stator and rotor temperature monitoring
- Feedwater and condenser level measurement
Material Composition:
- PCB: Multi-layer FR-4 with controlled impedance traces
- Connectors: Gold-plated Eurocard connectors
- Enclosure: Zinc-nickel plated steel for EMC compliance
Working Principle: Signal conditioning per channel includes programmable gain amplification, anti-aliasing low-pass filtering, and A/D conversion. The digitized data is packetized and sent over the Mark VIe backplane to the CPU for real-time control logic execution. Installation Requirements:
- Install in Mark VIe chassis slot with correct backplane alignment
- Use shielded cable with shield grounded at one end only
- Maintain minimum 10 mm clearance between modules for airflow
Usage Precautions:
- Never apply voltage exceeding 30 VDC to mA input channels
- Confirm RTD wire configuration (2-wire, 3-wire, 4-wire) in software
- Perform zero and span calibration during commissioning
