1746-NIO4V | Allen-Bradley Analog Combination Module Supplier

What Is the 1746-NIO4V?

When your SLC500 system demands precise analog signal handling without overspending, the 1746-NIO4V delivers. This Allen-Bradley analog combination module integrates two differential voltage or current inputs and two non-isolated voltage outputs into a single slot. By combining input and output functions, it reduces hardware costs and simplifies wiring, making it a cost-effective choice for mixed-signal applications.

Performance Metrics of the 1746-NIO4V

• Two differential inputs: selectable per channel for -20 to 20 mA current or -10 to +10V dc voltage.
• Current input resolution: 1.22070 µA per LSB ensures fine measurement.
• Voltage input resolution: 305.176 µV per LSB provides high precision.
• Two non-isolated voltage outputs with -10 to +10V range and 1.22070 mV per LSB resolution.
• 16-bit input resolution and 14-bit output resolution balance accuracy with cost.
• Backplane current draw: 55 mA at 5 Volts and 115 mA at 24 Volts minimizes power consumption.
• Bandwidth of 10 Hertz and update time of 512 microseconds support steady monitoring.
• Step response: 60 milliseconds in, 2.5 milliseconds out for quick output changes.

The 16-bit input resolution reduces signal noise, lowering the need for expensive filtering and saving on maintenance costs over time.

Real-World Applications for the 1746-NIO4V

In process control, the 1746-NIO4V handles temperature and pressure monitoring with its differential inputs while simultaneously driving actuators via voltage outputs. For example, a packaging line can use the module to read sensor signals and adjust servo positions in one cycle, cutting hardware costs by up to 30% compared to separate input and output modules. This integration also reduces panel space and wiring labor.

Setup & Mounting Guide

Mount the 1746-NIO4V in a single slot of a 1746 chassis. Use shielded Belden #8761 cable with 14 AWG size for field wiring to minimize electrical noise. Connect input signals per channel configuration: current loops require a 250 Ohm impedance, while voltage inputs use 1M Ohm impedance. For output wiring, ensure load resistance greater than 1KOhms to maintain accuracy. Always verify polarity before powering the system.

Routine Care for Reliability

Inspect the module quarterly for dust accumulation on the terminal block and chassis slots. Keep ambient temperature within 0 to 60 degrees Celsius to maintain drift accuracy. The inputs have an offset error of +/- 14 LSB over this range, so periodic calibration every six months ensures consistent performance. Following these steps extends module life and reduces unplanned downtime.

Integration with Control Systems

The 1746-NIO4V integrates with SLC500 programmable controllers and can serve as distributed I/O for CompactLogix and ControlLogix PACs. This flexibility allows you to reuse the module across different platforms, avoiding new hardware purchases when upgrading systems. Check your controller’s backplane current capacity to ensure the 55 mA at 5 Volts and 115 mA at 24 Volts draw is within limits.

Frequently Asked Questions About the 1746-NIO4V

Q: What is the input voltage range for the 1746-NIO4V?

A: The voltage input range is -10 to +10V dc, with a resolution of 305.176 µV per LSB.

Q: How many output channels does the 1746-NIO4V have?

A: It has two non-isolated voltage outputs with a range of -10 to +10 volts.

Q: What is the backplane current draw at 24 Volts?

A: The backplane current draw is 115 mA at 24 Volts.

Q: Can the 1746-NIO4V be used with CompactLogix controllers?

A: Yes, it can act as distributed I/O for CompactLogix and ControlLogix PACs.

Q: What is the update time of the module?

A: The update time is 512 microseconds.

Product Support & Availability

The 1746-NIO4V is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and lead times. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.