12 Channel High-Speed Fully Isolated Standard Digital Inputs


AP776 Digital Input Module measures Logic level and Calculate Pulse Train Counts in 12V/24V/110V Input Standard in twelve fully isolated input channels and communicates using the Modbus RTU serial protocol


  • Features
    • Input Channels
      • Compliant to IEC 61131-2; Type 1, 2, 3 Characteristics for 24-V Isolated Digital Inputs
      • Supports 9-V to 300-V DC and AC Digital Input Designs Using External Resistors
      • Accurate Current Limit for Low-Power Dissipation: – 2.2 mA to 2.47 mA for Type 3
      • High Input-Voltage Range With Reverse Polarity Protection: ±60 V
      • supports up to 100-kHz input signals (200-kbit) per channel
      • High Transient Immunity: ±70-kV/µs CMTI
  • Isolation
    • Over 3000V Channel to Channel Isolation
  • Safety-Related Certifications
    • Fault, Over Voltage, Surge and ESD Protected Inputs
    • Basic Insulation per DIN V VDE V 0884-10
    • UL 1577 Recognition, 2500-VRMS Insulation
    • CSA, CQC, TUV Certificates Available
  • Environmental
    • Operating Temperature: -40 ~ +85 °C
    • Storage Humidity: Max 90%


  • Process Monitoring Systems
  • Fast Dataloggers
  • General Input Module for PLC, DCS  and SCADA I/O Expansion
  • Motor Drive I/O and Position Feedback
  • CNC Control and Industrial Robots

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