Allen-Bradley 1746-NIO4I Four Channel Analog I/O module

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⇒Sales manager: Miya zheng  Email: sales@amikon.cn  WhatsApp: 86-18020776792

Overview

The Allen-Bradley 1746-NIO4I is a SLC 500 Analog Combination Module. This Analog Combination Module has Two (2) Voltage or Current Inputs and Two (2) Current Output channels. This module is used with SLC 500 fixed or modular style hardware.

Specifications

Description

The 1746-NIO4I is an SLC 500 Four Channel Analog I/O module by Allen-Bradley. This module is combination module which comes with Two (2) inputs and Two (2) output points in a single slot module. It has 2 differential voltage or current input points and 2 current outputs with an overall backplane current draw of 55mA at 5 Volts and 14 5mA at 24 Volts. Its points have a common mode voltage of -20 to 20 Volts with a common module rejection signal of 105 dB at 60 Hertz and a Normal mode rejection signal of 55dB at 60 Hertz. The 1746-NIO4I uses the Sigma-Delta ADC converter with a converter resolution of 16 bits, +/-1 LSB, and 0.01% repeatability and Non-Linearity. Its normal input current ranges between -20 and +20 mA with a current impedance of 250 Ohms and a resolution of 1.22 A per LSB. The 1746-NIO4I has an overall accuracy of +/-0.642% at 0 to 60 degrees Celsius with a drift accuracy of +79 ppm/5 degrees Celsius and maximum gain and drift errors of +/- 0.556% and +/- 67ppm/ degrees Celsius. The 1746-NIO4I also has a voltage input rating of -10 to 10 Volts DC and a 760 KOhms voltage impedance at a resolution of 305 microVolts per Least Significant Bit (LSB). It also has an accuracy of +/- 0.504%, and a drift accuracy and error of +/- 63 ppm/degree Celsius and +/- 57 ppm/degree Celsius. The 1746-NIO4I offers overvoltage at either 220 Volts AC (RMS) or 220 Volts DC (continuous). The current outputs have a load range of 0 to 500mA with its normal range at 0-20 mA and a 5% over-range capability at 2.56348 microA per LSB signal resolution. The 1746-NIO4I also has an overall accuracy of ±0.541% with a drift accuracy of ±70 ppm/degree Celsius and a gain and offset error of ±0.516% and +/-12 LSB. The entire module has a 500 Volt-tested isolation between fields in the wiring-to-backplane isolation and it has an aggregate update time of 512 microSeconds for all channels. The 1746-NIO4I’s operational temperature ranges between 0 and 60 degrees Celsius at a 5 to 95% non-condensing relative humidity.

FAQ

1. What distinguishes the AB 1746-NIO4I from conventional analog I/O modules in precision industrial control systems?
The AB 1746-NIO4I is a combination analog input/output module featuring two analog inputs and two analog outputs. It supports current signal processing, enabling accurate measurement and dependable analog control for SLC 500 automation platforms.

2. How does the AB 1746-NIO4I enhance process fidelity when managing critical current-loop applications?
The AB 1746-NIO4I delivers high-resolution current signal acquisition and output conversion, ensuring precise monitoring and stable control of field devices such as transmitters, control valves, and industrial actuators operating on standard current loops.

3. Why should engineers select the AB 1746-NIO4I for integrated analog monitoring and control within a single module?
The AB 1746-NIO4I consolidates analog input and output capabilities into one compact module, reducing chassis space requirements, simplifying system architecture, and improving installation efficiency without sacrificing control performance.

4. Which operational parameters should be validated before commissioning the AB 1746-NIO4I in an SLC 500 system?
Before deploying the AB 1746-NIO4I, engineers should verify current signal ranges, module configuration, output scaling, wiring integrity, power supply compatibility, and processor communication settings to achieve optimal operational accuracy.

5. How can the AB 1746-NIO4I contribute to long-term reliability in demanding industrial automation environments?
The AB 1746-NIO4I is engineered for consistent analog signal conditioning and dependable current-loop performance. Its robust design minimizes signal drift, supports stable process regulation, and helps maintain reliable operation in continuous industrial applications.

Related - Configuring Your Module

The NI4, NIO4I and NIO4V analog modules have user selectable DIP switch settings which allow you to configure the input channels as either current or voltage inputs. The switches are located on the analog module board. The following illustration shows the ON and OFF switch settings. Switch orientation is also provided on the nameplate of the module.

Switch Settings for the 1746-NIO4I and -NIO4V

The NIO4I and NIO4V have 2 individual switches labeled 1 and 2. These switches control the input mode of input channel 0 and 1. A switch in the ON position configures the channel for current input. A switch in the OFF position configures the channel for voltage input.

For more information, please contact us.

 ⇒Sales manager: Miya zheng  Email: sales@amikon.cn  WhatsApp: 86-18020776792

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