1746-NI16V | Allen-Bradley Analog I/O Module Supplier

What Is the 1746-NI16V?

When your control system demands accurate voltage signal measurement, the 1746-NI16V from Allen-Bradley delivers. This analog I/O module is part of the SLC 500 series and provides 16 input channels for signals such as ±10V dc, 1 to 5V dc, 0 to 5V dc, and 0 to 10V dc. It draws 125 milliamps from the 5V backplane and 75 milliamps from the 24V DC backplane, ensuring efficient power usage.

Key Features & Technical Specs

• 16 input channels with a 16-bit resolution for high precision.
• Bandwidth of 6-250 Hertz for flexible signal processing.
• Step response of 9-630 milliseconds for dynamic applications.
• Sigma-Delta conversion type for reliable analog-to-digital conversion.
• Low-pass digital filter with programmable frequencies: 6 Hz, 10 Hz, 20 Hz, 40 Hz, 60 Hz, 80 Hz, 100 Hz, 250 Hz.
• 500V AC isolation for 1 second protects against electrical noise.
• 5 green LED indicators: one per group of 4 channels, plus one for module status.

Real-World Applications

In process control environments, the 1746-NI16V handles combination 120V AC I/O tasks with ease. It is ideal for monitoring voltage levels in manufacturing lines, chemical processing, and material handling systems. Because it supports multiple voltage ranges, you can use it across diverse sensor types without additional signal conditioning.

Installation Guide

Install the 1746-NI16V in any I/O module slot except slot 0 of the SLC 500 chassis. It can be placed in the local or expansion chassis. Use the replaceable terminal block (part number 1746-RT25G) or pre-wired cables from Allen-Bradley with terminal blocks such as 1492-AIFM8-3 and 1492-AIFM16-F-3. Always disconnect power before inserting or removing the module to prevent electric arcs.

Maintenance & Reliability

Regularly inspect the 1746-NI16V for dust accumulation and ensure the chassis environment stays within the operating temperature range. The module is UL listed, C-UL approved, and CE compliant, and it is approved for Class I Division 2 hazardous environments. For long-term reliability, verify that the backplane currents (125 mA at 5V, 75 mA at 24V) are within the power supply capacity.

Compatible Systems

The 1746-NI16V integrates with SLC 500 processors via a parallel rear-facing interface. It receives power from the SLC 500 power supply through the backplane. Use Belden #8761 or equivalent cable for wiring. The module supports standard cable lengths of 0.5, 1, 2.5, and 5.0 meters.

Common Questions about the 1746-NI16V

Q: What is the resolution of the 1746-NI16V?

A: The module has a 16-bit resolution, providing precise measurement of analog signals.

Q: What voltage signals does it accept?

A: It accepts ±10V dc, 1 to 5V dc, 0 to 5V dc, and 0 to 10V dc.

Q: How many input channels does it have?

A: It has 16 input channels.

Q: What is the backplane current draw?

A: It draws 125 milliamps at 5 Volts and 75 milliamps at 24 Volts DC.

Q: Can it be used in hazardous locations?

A: Yes, it is approved for Class I Division 2 hazardous environments.

Q: What is the isolation rating?

A: It provides 500V AC isolation for 1 second.

Product Support & Availability

The 1746-NI16V is available from Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. In stock and ready to ship.