AI801-eA 8-Channel Analog Input Module 

1. Key Parameters

• Number of Input Channels: 8 independent, galvanically isolated channels
• Supported Signal Types:
  • Current signals: 4-20mA DC (two-wire/three-wire transmitter compatible), 0-20mA DC
  • Voltage signals: 0-10V DC, ±10V DC, 0-5V DC
  • RTD signals: Pt100 (3-wire connection), Pt1000 (3-wire connection)
  • Thermocouple signals: K-type, J-type, T-type (with built-in cold junction compensation)
• Measurement Accuracy:
  • Current/voltage: ±0.1% of full scale (at 25℃); ±0.2% of full scale (within operating temperature range)
  • RTD (Pt100): ±0.2℃ (for -50℃~+200℃)
  • Thermocouple (K-type): ±0.5℃ (for 0℃~+1000℃)
• Resolution: 16 bits (for current/voltage); 20 bits (for RTD/thermocouple)
• Sampling Rate: 10 samples/second per channel (configurable up to 50 samples/second)
• Temperature Drift: ≤50ppm/℃ (for current/voltage); ≤80ppm/℃ (for RTD/thermocouple)
• Isolation Level: 2.5kVrms (channel-to-channel, channel-to-power supply, channel-to-backplane)
• Protection Features: 2kV ESD protection (IEC 61000-4-2), 4kV EFT protection (IEC 61000-4-4), open-circuit detection (for RTD/thermocouple)
• Power Supply: 24V DC (±10% tolerance); Typical power consumption: ≤7W (full load)
• Operating Temperature Range: -20℃~+60℃
• Storage Temperature Range: -40℃~+85℃
• Communication Interface: Profinet (for 800xA system integration), Modbus RTU (for third-party PLC compatibility)
• Installation Method: 35mm standard DIN rail mounting
• Protection Class: IP20 (module body); Complies with IEC 61010-1 (safety) and IEC 61000-6-2 (EMC immunity)

2. Product Features

• High Channel Density: 8 independent channels in a compact design maximize control cabinet space utilization, ideal for applications requiring monitoring of multiple analog parameters (e.g., production lines with diverse sensors).
• Multi-Signal Versatility: Supports current, voltage, RTD, and thermocouple signals, eliminating the need for multiple dedicated modules and simplifying system wiring and integration.
• Reliable Isolation: 2.5kVrms galvanic isolation between channels prevents ground loops and cross-interference, ensuring stable measurement in noisy industrial environments (e.g., near motors, frequency converters).
• Flexible Configuration: Each channel can be independently set for signal type, range, and sampling rate via the 800xA Engineering Studio—no hardware jumpers required, reducing on-site commissioning time.
• Intuitive Diagnostics: Front-panel LED indicators (per-channel signal status, module power, communication) provide real-time visual feedback; open-circuit detection for RTDs/thermocouples enables quick troubleshooting of sensor wiring faults.
• Industrial Durability: Flame-retardant ABS housing (UL94 V-0) and anti-vibration design (IEC 60068-2-6: 50Hz, 5g acceleration) withstand dusty, humid, or vibration-prone conditions (e.g., chemical plants, manufacturing workshops).
• Seamless System Integration: Optimized for ABB 800xA and S800 I/O, supporting online parameter adjustment and data logging—facilitates integration with central control systems and simplifies maintenance.

3. Application Fields

• Process Industry: Acquisition of pressure (pipes), temperature (reactors), flow (media), and level (tanks) signals in chemical plants, oil refineries, and petrochemical facilities.
• Manufacturing Automation: Measurement of mold temperature (injection molding machines), hydraulic pressure (presses), and motor bearing temperature (conveyor systems) in automotive and electronics production lines.
• Power Sector: Monitoring of transformer temperature, generator coolant pressure, and power distribution cabinet voltage/current in thermal power plants and renewable energy systems.
• Water & Wastewater Treatment: Acquisition of pH value (neutralization tanks), dissolved oxygen (aeration units), and pump outlet pressure in treatment facilities.
• Food & Beverage Industry: Precise temperature and pressure monitoring in pasteurization lines, fermentation tanks, and packaging equipment—complying with food safety standards.

4. Precautions

• Signal Compatibility Check: Before installation, confirm the connected sensor/transmitter signal type (e.g., 4-20mA, Pt100) matches the channel configuration to avoid measurement errors.
• RTD/Thermocouple Wiring: For Pt100/Pt1000 connections, use wires of the same gauge and length to minimize resistance imbalance; for thermocouples, use compensation cables to ensure accurate temperature measurement.
• Wiring Best Practices: Use shielded twisted-pair cables for signal lines; route them separately from high-voltage power cables (≥30cm spacing) and connect the cable shield to protective ground (single-point grounding) to reduce EMI.
• Power Supply Safety: Ensure the input power is 24V DC (±10%)—overvoltage or reverse polarity will damage the module’s internal circuit.
• Environmental Limits: Do not install in areas with temperatures exceeding 60℃ or high corrosive gas concentrations (e.g., coastal salt spray, chemical fumes) without additional protection.
• Calibration Schedule: Calibrate the module annually (per ABB recommendations) using a standard signal generator to maintain measurement accuracy, especially for critical parameters (e.g., food processing temperature)

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