Four-Channel Combination I/O
The Allen-Bradley 1746NIO4V, officially cataloged as 1746-NIO4V, combines two analog input channels and two analog voltage output channels in one SLC 500 module.
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Allen-Bradley
Allen-Bradley 1746NIO4V A SLC 500 Analog Output Module
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | Allen-Bradley |
| Model Number | 1746NIO4V |
| Manufacturer Catalog Number | 1746-NIO4V |
| Product Category | Analog Combination I/O Module |
| Product Family | SLC 500 |
| Total Analog Channels | 4 |
| Analog Input Channels | 2 |
| Analog Output Channels | 2 Voltage Outputs |
| Input Signal Types | Voltage or Current, Selectable Per Input Channel |
| Voltage Input Range | -10 to +10 VDC |
| Current Input Range | -20 to +20 mA |
| Voltage Output Range | -10 to +10 VDC |
| Analog Input Resolution | 16-Bit Maximum, Depending on Selected Range |
| Analog Output Converter Resolution | 14-Bit |
| Voltage Input Resolution | 305.176 µV/LSB |
| Current Input Resolution | 1.22070 µA/LSB |
| Voltage Output Resolution | 1.22070 mV/LSB |
| Voltage Output Step Response | 2.5 ms at 95% |
| Minimum Output Load Resistance | 1 kΩ |
| Maximum Output Load Current | 10 mA |
| Module Installation | Single Slot in SLC 500 Chassis |
| Product Lifecycle Status | Discontinued April 29, 2021 |
| Manufacturer UPC | 662073735892 |
| Manufacturer Installation Instructions | Rockwell Automation Publication 1746-IN008 |
| Manufacturer User Manual | Rockwell Automation Publication 1746-UM005 |
Key Features
Selectable Analog Inputs
Each input channel can be configured for compatible voltage or current signals, including bipolar -10 to +10 VDC and -20 to +20 mA ranges.
Two Analog Voltage Outputs
The module provides two analog voltage outputs with a -10 to +10 VDC operating range for compatible industrial control devices.
16-Bit Input and 14-Bit Output Conversion
Input conversion supports up to 16 significant bits depending on the selected signal range, while the voltage output digital-to-analog converter uses 14-bit resolution.
Single-Slot SLC 500 Integration
Two inputs and two outputs are combined in a module occupying one SLC 500 chassis slot, supporting mixed analog signal acquisition and control within the controller system.
Documented Analog Performance
Rockwell Automation specifies a voltage output resolution of 1.22070 mV per LSB and an output step response of 2.5 ms at 95% for the NIO4V configuration.
Applications
- SLC 500 PLC analog I/O expansion
- Industrial process monitoring and control
- Analog sensor and transmitter signal acquisition
- Voltage-commanded variable speed drive control
- Industrial valve and actuator control interfaces
- Machine automation analog signal processing
- Legacy SLC 500 control system maintenance
- Existing SLC 500 analog module replacement projects
Purchase Information
We support online purchase of the Allen-Bradley 1746NIO4V Analog Combination I/O Module. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
Frequently Asked Questions
What is the Allen-Bradley 1746NIO4V?
It is a four-channel SLC 500 analog combination I/O module with two analog inputs and two analog voltage outputs. The official manufacturer catalog number is 1746-NIO4V.
How many input and output channels does it provide?
It provides two analog input channels and two analog voltage output channels, for four channels in total.
What types of input signals are supported?
The input channels support selectable voltage and current signals, with ranges including -10 to +10 VDC and -20 to +20 mA.
Can the module accept 4–20 mA signals?
Yes. The module supports a 4–20 mA signal within its configurable analog current input range.
What type of output does 1746-NIO4V provide?
It provides two voltage outputs rated for -10 to +10 VDC. It does not provide analog current outputs.
What is the analog input resolution?
The input conversion supports up to 16 significant bits depending on the selected input range. Rockwell Automation specifies 305.176 µV/LSB for voltage inputs and 1.22070 µA/LSB for current inputs.
What is the output resolution?
The analog voltage output converter has 14-bit resolution, corresponding to 1.22070 mV per LSB.
What is the voltage output response time?
The manufacturer specifies an output step response of approximately 2.5 ms at 95%.
Which PLC family uses this module?
The 1746-NIO4V is designed for the Allen-Bradley SLC 500 programmable controller platform and occupies one compatible chassis slot.
Is the 1746-NIO4V still manufactured?
Rockwell Automation lists the product as discontinued effective April 29, 2021. Availability and replacement options should be confirmed before purchasing.
Can 1746-NIO4I replace 1746-NIO4V?
Do not assume interchangeability. The 1746-NIO4V has voltage outputs, while the 1746-NIO4I has current outputs. Verify connected devices, wiring and PLC configuration before considering a replacement.
What should be checked before ordering?
Confirm model 1746NIO4V, official part number 1746-NIO4V, SLC 500 chassis compatibility, two analog inputs, two voltage outputs, required signal ranges, module wiring, software configuration and the existing system requirements.
Need help confirming a model?
Send us your part number and technical requirements.
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