Allen-Bradley 1790D-TN4V0 | Analog Voltage Input Module

Allen-Bradley 1790D-TN4V0 4-Channel Analog Voltage Input Module

Core Technical Specifications

• Brand: Allen-Bradley
• Model: 1790D-TN4V0
• Input Channels: 4 single-ended, non-isolated channels.
• Input Range: 0 to +10 Volts DC.
• Resolution: High 12-bit unipolar resolution (2.44 mV/bit).
• Data Format: Binary data from 0000 to 0FFF hexadecimal.
• Conversion Time: 10 ms per channel for precise sampling.
• Overall Accuracy: Excellent 0.2% of full scale accuracy.
• Operating Temperature: Stable performance from 0 to 55°C.
• Input Impedance: High 500 KΩ minimum to minimize loading.

Power & Electrical Characteristics

• DeviceNet Supply: 24V DC nominal (11 to 28.8V DC range).
• Field Power Supply: 24V DC nominal (21.6 to 26.4V DC range).
• Power Dissipation: Maximum 1.2W (network), 1.5W (field power).
• Insulation Resistance: 20 MΩ minimum at 250V DC between circuits.
• Isolation: 1250V AC rms photo-coupler isolation (I/O to logic).

Frequently Asked Questions (FAQ)

• How many voltage inputs does this module have?
  The 1790D-TN4V0 provides four independent voltage input channels.
• What voltage range can it measure?
  It measures standard 0 to +10 Volt DC signals from sensors and transmitters.
• What is the sampling rate or conversion time?
  Each channel converts in 10 milliseconds for accurate data acquisition.
• Does it need periodic calibration?
  No, this Allen-Bradley module is factory set and maintenance-free.
• What is the input impedance?
  It features high 500 KΩ input impedance to avoid signal distortion.
• Can I expand the system with more modules?
  Yes, you can add up to two expansion modules to this base unit for more I/O.

This input module is part of the reliable Allen-Bradley 1790 DeviceNet series for industrial automation.

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