Features:
- Eight independently configurable current output channels enable flexible control of multiple field devices
- High precision performance with 16-bit resolution and low non-linearity ensures accurate signal output
- Robust industrial design with 500V isolation and wide environmental tolerance improves system reliability
The Allen-Bradley 1746-NO8I plays a critical role in industrial automation systems by converting digital control signals into precise analog current outputs. In applications such as process control, manufacturing, and energy systems, accurate current signals are essential for maintaining stability and efficiency. The module supports eight channels, allowing multiple devices to be controlled simultaneously without requiring additional hardware, which helps optimize system cost and cabinet space.
Functionally, the Allen-Bradley 1746-NO8I offers advanced output management capabilities including programmable scaling, output limits, and ramping control. These features allow engineers to fine-tune system behavior, ensuring smooth transitions and preventing sudden changes that could affect equipment performance. With software-based configuration, adjustments can be made quickly without physical modifications, improving commissioning efficiency and reducing downtime.
In practical deployment, the Allen-Bradley 1746-NO8I is widely used in environments where reliability and precision are essential. Its ability to withstand vibration, shock, and temperature variations makes it suitable for harsh industrial conditions. Combined with flexible power options and secure wiring via a removable terminal block, the module provides a dependable and adaptable solution for modern control systems.
The 1746-NO8I Allen-Bradley SLC 8 Point 20ma Output Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1746-NO8I SLC 8 Point 20ma Output Module Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1746-NO8I SLC 8 Point 20ma Output Module Specs
General
- Manufacturer Allen-Bradley
- Model 1746-NO8I
- Condition New Original ready stock
- Product Family 1746SC-NO8I,1746-NO8V,1746-NO8I/A
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Signal Transmission: Converts PLC processor digital instructions into standard physical analog current signals via the backplane bus.
- Mode Compatibility: Supports the traditional Class 1 simplified control bus protocol and the Class 3 extended mode, which transmits more interactive information.
- Periodic Refresh: Maintains high-frequency active-end updates with the SLC 500 CPU, ensuring that channel data control logic is delivered in real time.
- Remote Mapping: Can be used with remote Ethernet adapters such as the 1747-AENTR for distributed control node communication in a network architecture.
- Proportional Valve Control: Provides uninterrupted 4-20mA current setpoint for pneumatic and electric regulating valves, precisely controlling pipeline fluid flow.
- Variable Frequency Drive (VFD): Inputs the target speed signal to the current input terminal of the industrial VFD to dynamically adjust the speed of the main and auxiliary pumps and fans.
- Actuator Positioning: Works with heavy-duty industrial servo mechanisms or electro-hydraulic actuators, achieving linear position and stroke control through milliampere signal output.
- Instrument Cascading: Forwards process control variables calculated by the PLC to secondary recorders, panel displays, or third-party dedicated controllers.
- Wiring Separation: Employs fully independent removable terminal blocks (RTBs) for quick replacement of spare parts without altering field wiring.
- Safety Protection: Signals and internal backplane circuitry are opto-isolated to effectively prevent damage to the CPU from external field noise and high surges.
- Wire Loss Retention: Allows configuration of a safety state during communication interruptions or PLC shutdowns, ensuring safe reset of process equipment in case of failure.
- Cable Damping: The cable tie slot at the bottom of the module securely locks the wiring harness, preventing poor contact due to cabinet vibration during prolonged operation.