Allen-Bradley 1746-NIO4V SLC 500 Analog Combo Module

Allen‑Bradley 1746‑NIO4V SLC 500 Analog Combination Module

Product Introduction

The Allen‑Bradley 1746‑NIO4V is a flexible analog combination module for the SLC 500 platform. It integrates two input channels and two output channels into one compact module. Each input channel is individually selectable for voltage or current signals. The output channels provide reliable voltage control signals. This combination makes the 1746‑NIO4V an ideal solution for space-constrained applications. It is compatible with both fixed and modular SLC 500 hardware styles.

Accuracy and Performance

The Allen‑Bradley 1746‑NIO4V delivers outstanding accuracy across its operating range. For current inputs, the accuracy is ±0.642% with a drift of 79 ppm per 5°C. For voltage inputs, the accuracy is ±0.504% with a drift of ±63 ppm per °C. The maximum gain error is ±0.461%. Additionally, the offset error is within ±14 LSB at 0 to 60°C.

On the output side, the voltage accuracy is ±0.384% of a 10V full-scale value. The maximum drift accuracy is ±54 ppm per °C. The gain error is ±0.374% with a drift error of ±47 ppm per °C. The output offset error is within ±11 LSB. These specifications guarantee reliable performance in demanding environments.

Mechanical and Environmental Parameters

The Allen‑Bradley 1746‑NIO4V is built for industrial durability. It provides field wiring-to-backplane isolation at 500 Volts DC. The module offers overvoltage protection up to 220V AC or 220V DC across input terminals. It operates within a temperature range of 0 to 60 degrees Celsius. The bandwidth is 10 Hertz, suitable for many process control applications. The input step response is 60 milliseconds.

Installation and Configuration Guide

Installing the 1746‑NIO4V is straightforward and convenient. You can mount it in any slot of the 1746 chassis except Slot 0. Slot 0 is reserved for the processor or communication adapters. The module occupies a single slot, saving valuable rack space. It comes with a removable terminal block for easy wiring and replacement. This design eliminates the need for rewiring during module changes.

For wiring, use Belden #8761 shielded cable or an equivalent type. The recommended wire size is 14 AWG. You can configure each input channel independently using the embedded DIP switches. This flexibility allows you to mix voltage and current inputs as needed. The 1746‑NIO4V is compatible with SLC 5/01, 5/02, 5/03, 5/04, and 5/05 processors.

System Integration

The 1746‑NIO4V integrates seamlessly into your control architecture. Beyond the SLC 500 system, it can also serve as a distributed I/O module. Specifically, it works with CompactLogix and ControlLogix Programmable Automation Controllers (PAC). This versatility extends the life and value of your investment. The module's data formats include Engineering Units, Scaled-for-PID, and Proportional Counts. This ensures compatibility with various programming environments.

Packaging List

Your shipment for the Allen‑Bradley 1746‑NIO4V includes the following items:

• Allen‑Bradley 1746‑NIO4V Analog Combination Module (1 unit)

• Removable Terminal Block (18 positions)

• Installation Instructions Manual

Note: Cables, configuration software, and DIP switch tools are sold separately.

Shipping Method: FedEx, UPS, or DHL.

Frequently Asked Questions (FAQ)

1. Can I configure each input channel independently on the 1746‑NIO4V?
Yes, each of the two input channels is individually selectable. You can set one for voltage and the other for current based on your application needs.

2. What are the output types available on the Allen‑Bradley 1746‑NIO4V?
This module provides two non-isolated voltage outputs. The output range is -10 to +10 volts with a 14-bit resolution.

3. What is the update time for the 1746‑NIO4V?
The aggregate update time for all input and output channels is 512 microseconds. This ensures rapid data acquisition and control response.

4. Where can I install the Allen‑Bradley 1746‑NIO4V in the chassis?
You can install it in any slot except Slot 0. Slot 0 is reserved for the processor or communication adapters like RIO, DH+, or Ethernet modules.

5. Can I use the 1746‑NIO4V with other Rockwell Automation platforms?
Yes, beyond the SLC 500 system, you can use this module as a distributed I/O with CompactLogix and ControlLogix PACs. This provides excellent system integration flexibility.