GE IC670ALG240-JC
GE IC670ALG240-JC - Image 2

GE IC670ALG240-JC

  • Product Introduction: This is a 4-channel analog input module designed for the GE 90-30 and VersaMax PLC platforms. It accepts 4-20mA current loop signals from transmitters, flow meters, pressure sensors, and temperature transmitters. The “JC” suffix indicates a specific firmware/calibration variant. It provides 12-bit resolution and is used in process control applications.
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Category: SKU: GE IC670ALG240-JC

Description

GE IC670ALG240-JC

  • Technical Specifications:
    • Channels: 4 independent analog input channels
    • Input Type: 4-20mA (2-wire transmitter compatible)
    • Resolution: 12-bit (4096 counts)
    • Input Range: 4-20mA (0-4095 counts), or 0-20mA with external resistor
    • Accuracy: ±0.1% of full scale
    • Sampling Rate: 10 samples per second per channel
    • Isolation: 500V RMS channel-to-channel, channel-to-bus
    • Power Consumption: ~1.5W
    • Operating Temperature: 0°C to 60°C
  • Functional Features:
    • 4 channels with individual configuration (mA, mV, or resistance)
    • Supports 2-wire and 4-wire transmitter connections
    • Software-selectable input range
    • Diagnostic LEDs per channel
    • Cold junction compensation not included (external required for thermocouples)
  • Application Scenarios:
    • Process control: pressure, flow, level, temperature monitoring
    • HVAC system sensor reading
    • Water treatment plant instrumentation
    • Chemical process monitoring
    • Tank level measurement via pressure transmitters
  • Performance Parameters:
    • Linearity: ±0.05% FS
    • Common Mode Rejection: >100dB
    • Input Impedance: 250Ω (for voltage measurement mode)
    • Bus Speed: Genius Bus / VersaMax backplane
  • Material Composition:
    • Housing: UL94 V-0 polycarbonate
    • PCB: 4-layer FR-4, conformal coated
    • Connectors: Gold-plated backplane, screw terminals
    • Isolation: Opto-isolators per channel
  • Structural Features:
    • Standard IC670 form factor
    • 4 LED status indicators
    • DIN-rail or rack mount
  • Working Principle:
    • The 4-20mA signal flows through a precision 250Ω shunt resistor inside the module, converting current to voltage (1-5V). An ADC (Analog-to-Digital Converter) samples this voltage and converts it to a 12-bit digital value. The CPU reads the value via the backplane bus. The module supports software scaling to engineering units.
  • Installation Requirements:
    • Mount in IC693 or IC695 chassis (90-30 compatible)
    • Use shielded twisted-pair for 4-20mA signals
    • Connect transmitter loop: +24V → transmitter → module input → module common → 0V
    • Ground shield at one end only
  • Usage Precautions:
    • Never apply voltage directly to current input — always use current loop
    • Do not exceed 24mA on any channel
    • Verify transmitter is 2-wire compatible (loop-powered)
    • Calibrate zero and span in software for best accuracy
    • Keep analog cables away from digital I/O cables (>15cm separation)

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