Allen-Bradley 1791-NDV Block I/O Module | 24V DC Analog

Allen-Bradley 1791-NDV Analog I/O Module: Compact and Reliable Performance

Key Product Specifications

• Brand & Model: The module comes from the trusted manufacturer Allen-Bradley, with the model number 1791-NDV.
• I/O Configuration: This unit provides four analog input channels and two analog voltage output channels.
• Electrical Ratings: It operates on an external power supply of 19.2 to 30 Volts DC.
• Signal Performance: The module boasts a high 14-bit resolution for accurate data conversion.
• Accuracy: It maintains an excellent absolute accuracy of 0.1% at a stable 25°C.
• Protection Features: It includes indefinite short-circuit protection for the outputs.

Detailed Technical Parameters

• Update Rate: Each channel updates its signal every 108 milliseconds for timely data.
• Input Impedance: The voltage input channels have a high 10 MΩ impedance.
• Current Input: The current input channels use a 249-ohm shunt resistor rated at 0.25 Watts.
• Output Impedance: The analog outputs feature a very low output impedance of less than 1 Ohm.
• Linearity: The device ensures signal fidelity with a linearity of 0.05% at 25°C.
• Bandwidth: The input filter provides a 5 Hz bandwidth to reduce noise.

Environmental & Physical Specifications

• Operating Temperature: The unit works reliably in ambient temperatures from 0 to 60 degrees Celsius.
• Storage Temperature: You can store it safely in temperatures ranging from -40 to 85 degrees Celsius.
• Humidity Tolerance: It withstands relative humidity levels of 5% to 95%, non-condensing.
• Dimensions: The compact module measures 6.95 inches in height, 2.7 inches in width, and 3.85 inches in depth.
• Power Dissipation: Its power dissipation is approximately 11.52 Watts (39.28 BTU per hour).
• Overvoltage Protection: Both inputs and outputs are protected against overvoltage up to 140 Volts AC.

Installation & Support Information

• Mounting: Install the 1791-NDV module on a standard DIN rail within your control panel.
• Wiring: Always follow the wiring diagram in the manual for correct and safe connections.
• Power: Ensure your system's DC power supply falls within the 19.2-30V DC range.
• Environment: Confirm your installation site meets the specified temperature and humidity limits.

Packaging & Shipping

• Packaging List: Your order includes one Allen-Bradley 1791-NDV module and the necessary documentation.
• Shipping Options: We ship globally using reliable carriers like FedEx, UPS, and DHL.
• Stock Status: This is a brand new, original product, and we typically have it in stock.
• Dispatch Time: We process and dispatch orders within 5 business days.
• Return Policy: We offer a 30-day return policy for your peace of mind.

Frequently Asked Questions (FAQ)

• What is the 1791-NDV module's main function?
  It is a 24V DC analog interface that reads 4 sensor signals and controls 2 analog actuators for PLC systems.
• What type of signals does the 1791-NDV handle?
  The four input channels can accept either voltage or current signals, as configured.
• How fast does this Allen-Bradley module update its data?
  The module updates each of its six channels every 108 milliseconds.
• What is the resolution of the analog conversion?
  It features a 14-bit analog-to-digital conversion, providing fine signal detail.
• Is the output channel protected against wiring mistakes?
  Yes, the output channels have indefinite short-circuit protection for safety.
• What is the condition of the product you ship?
  We supply only brand new, original, and unused Allen-Bradley modules.
• How quickly will my order ship?
  We aim to pack and ship all in-stock items within 5 business days after order confirmation.
• Which logistics services do you use?
  We commonly use international express services like DHL, FedEx, and UPS for reliable delivery.
• What if the product does not meet my needs?
  We offer a straightforward 30-day return policy for qualified items.

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