Description

GE  IC697ALG320  Analog Input Module

Basic Parameters

• Input Channels: 8 differential analog input channels, which can be independently configured as voltage or current inputs.
• Signal Types:
  • Voltage: Supports multiple ranges such as ±10V, ±5V, ±2.5V, ±1V, ±0.5V.
  • Current: Supports ranges such as ±20mA, 0~20mA (needs to be configured via software).
• Resolution: 16-bit, with built-in oversampling function that can be upgraded to 18-bit (needs to be enabled via software).
• Conversion Rate: Up to 10ms per channel (standard mode), supports fast mode (5ms per channel).
• Accuracy: ±0.05% (full scale, 25℃).
• Isolation Characteristics:
  • Isolation between channels: 500Vrms (differential input).
  • Isolation between field side and logic side: 1500Vrms.
• Sampling Method: Synchronous sampling (all channels sample simultaneously).
• Power Requirements:
  • +5V DC: 120mA (powered by backplane).
  • +24V DC: 80mA (optional, used for field side isolation).

Structural Design

• Physical Dimensions: 100mm × 110mm × 55mm (height × width × depth).
• Installation Method: Standard DIN rail or rack mounting, compliant with VME bus specifications.
• Interface Design:
  • The front end adopts a detachable terminal block for easy wiring and maintenance.
  • Each channel supports differential input, which can effectively suppress common-mode interference.
• Indicator Lights:
  • PWR: Power indicator.
  • COM: Communication status indicator.
  • CHx: Channel fault indicator (8 channels displayed independently).

Functional Features

• High-Precision Acquisition:
  • 16-bit ADC combined with oversampling technology can meet the needs of precision measurement (such as pressure, temperature, flow, etc.).
  • Supports bipolar and unipolar inputs, adapting to different sensor types.
• Flexible Configuration:
  • Each channel’s input type, range, and filtering parameters can be independently configured via software.
  • Supports Open Wire Detection function, which can monitor the status of sensor lines in real time.
• Anti-Interference Ability:
  • The isolation design between channels avoids signal crosstalk, suitable for complex industrial environments.
  • Built-in low-pass filter (cutoff frequency optional: 1.2Hz, 10Hz, 50Hz, 60Hz) to effectively suppress power frequency interference.
• Diagnostic Functions:
  • Supports channel-level fault diagnosis (such as over-range, sensor disconnection).
  • The module status can be queried in real time through LED indicators or PLC.

Working Principle

• Signal Conditioning: External analog signals (voltage/current) enter the module through the terminal block, and first pass through the signal conditioning circuit for amplification or attenuation to match the input range of the ADC.
• Analog-to-Digital Conversion: The 16-bit ADC samples and digitizes the conditioned signal, and the conversion result is stored in the module’s internal register.
• Data Transmission: The PLC reads the register data through the system bus (such as VME) and performs further processing.
• Synchronous Sampling: All channels sample simultaneously to ensure the time consistency of multi-channel data, suitable for applications requiring phase synchronization (such as power monitoring).

Application Fields

• Power System:
  • Monitor parameters such as voltage, current, and power factor.
  • Application scenarios: Substation automation, generator set control.
• Chemical and Pharmaceutical Industry:
  • Collect analog signals such as temperature, pressure, and liquid level.
  • Application scenarios: Reactor monitoring, pipeline flow control.
• Manufacturing Industry:
  • Robot joint position feedback, force sensor signal acquisition.
  • Application scenarios: Automated production lines, precision machining equipment.
• Energy Management:
  • Monitor the output power of solar panels and the charging and discharging status of batteries.
  • Application scenarios: Distributed energy systems, smart grids.
• Environmental Monitoring:
  • Collect meteorological data (wind speed, air pressure) and water quality parameters (pH value, turbidity).
  • Application scenarios: Sewage treatment plants, weather stations.

Typical Application Cases

• Case 1: A chemical plant uses the IC697ALG320 to collect reactor temperature (±5V signal) and pressure (4~20mA signal). Through 16-bit high-precision sampling, it achieves ±0.1℃ temperature control, improving the stability of product quality.
• Case 2: In a wind power project, the module synchronously collects the three-phase current and voltage signals of the generator for power calculation and fault diagnosis. The isolation between channels effectively avoids electromagnetic interference.
• Case 3: In the food processing production line, the module is configured in fast sampling mode (5ms per channel) to monitor the filling pressure in real time, ensuring that the capacity error of each bottle of beverage is less than ±1%.