Allen-Bradley 1746-NIO4I: Analog Combination I/O Module
Maximize your control capabilities with the Allen-Bradley 1746-NIO4I analog combination module. This versatile unit combines inputs and outputs in one compact package for SLC 500 systems. The 1746-NIO4I delivers both measurement and control functions in a single slot.
Product Overview
The Allen-Bradley 1746-NIO4I is a versatile analog combination module for SLC 500 systems. This 1746-NIO4I module features two configurable input channels and two current output channels. It’s ideal for applications requiring both measurement and control capabilities in a compact form factor.
Technical Specifications
- Brand: Allen-Bradley (Rockwell Automation)
- Series: SLC 500
- Model: 1746-NIO4I
- Module Type: Analog Combination I/O
- Input Channels: 2 differential channels
- Input Types: Voltage or current (selectable)
- Input Ranges: ±10V DC or ±20 mA
- Output Channels: 2 current outputs
- Output Range: 0-20 mA (5% overrange capable)
- Input Resolution: 16 bits
- Output Resolution: 14 bits
- Update Time: 512 microseconds
- Accuracy (25°C): ±0.541% of full scale
- Backplane Current (5V): 55 mA
- Backplane Current (24V): 145 mA
- Non-Linearity: 0.01% (inputs)
- Isolation: 500V tested
- Load Range: 0 to 500Ω
- Operating Temperature: 0 to 60°C (32 to 140°F)
- Common Mode Rejection: 105 dB at 60 Hz
- Normal Mode Rejection: 55 dB at 60 Hz
Comparison With Similar Products
Consider these alternative modules for your system:
Allen-Bradley 1746-OBP16 (16-Point DC Output Module)
Allen-Bradley 1746-OW16 (16-Point Relay Output Module)
Frequently Asked Questions
- What applications is this module designed for?
It’s ideal for closed-loop control systems, process monitoring, and applications requiring both measurement and control. - Can I use different signal types simultaneously?
Yes, each input channel can be independently configured for either voltage or current operation. - What is the advantage of a combination module?
It saves space in your chassis by combining input and output functions in a single slot. - What types of devices can I control with the outputs?
The current outputs can control valve positioners, variable frequency drives, and other current-controlled devices. - How do I scale the analog values in my program?
Use scaling instructions in your ladder logic to convert raw values to engineering units.
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