1746-N1161 Allen Bradley Processor module

Description

1746-N1161 Allen Bradley Processor module

Product Dimensions：

Product Description

The 1746-NI16I is a 16-channel analog input module that provides high-density monitoring capabilities for SLC 500 controller systems. Unlike standard analog modules that often provide 4 or 8 channels, this “I” version is specifically designed for current signals (typically 4–20mA or 0–20mA). It converts analog signals into digital values that can be processed by the CPU, making it an essential component for complex systems requiring numerous analog data points.

Product Parameters

• Module Type: High-Density Analog Input

• Number of Channels: 16 Differential Inputs

• Input Range: 0 to 20 mA or 4 to 20 mA (Jumper Selectable)

• Resolution: 16-bit

• Backplane Current Load: 125 mA at 5V DC; 100 mA at 24V DC

• Conversion Type: Sigma-Delta

• Step Response: 10 ms to 1.2 seconds (Filter dependent)

• Isolation: 500V DC between inputs and backplane; no isolation between individual channels

• Terminal Block: 1746-RT25C (Removable)

Product Advantages

• Space Efficiency: By offering 16 channels in a single slot, it reduces the number of chassis slots required for large-scale analog systems, lowering overall hardware costs.

• High Resolution: The 16-bit resolution provides highly accurate data conversion, which is critical for precision monitoring in process control.

• Filter Configuration: Features programmable digital filters that allow the user to balance the trade-off between noise rejection and response speed.

• Ease of Maintenance: Utilizing the removable terminal block (RTB) allows for the replacement of the module without having to disconnect every individual signal wire.

Precautions for Use

• Heat Dissipation: Due to its high channel density, this module generates more heat than lower-density modules. Ensure the SLC 500 chassis has adequate ventilation and is mounted in the correct orientation.

• Common Mode Voltage: Because the channels are not isolated from each other, all input signals must remain within the specified common-mode voltage range to prevent interference or damage.

• Shielding and Grounding: To minimize electrical noise, use shielded twisted-pair cabling and ensure shields are grounded at one end only (typically at the chassis).

• Power Supply Capacity: Calculate the total backplane current draw carefully to ensure the SLC 500 power supply can support the additional load of a 16-channel module.

Product Applications

• Process Industry: Monitoring large arrays of flow meters, pressure transmitters, and temperature sensors in chemical or water treatment plants.

• HVAC Systems: Integrating multiple environmental sensors for large-scale building automation.

• Tank Farms: Tracking levels across numerous storage tanks where current-loop (4–20mA) signals are the standard.

• Manufacturing: Real-time data collection from various machine-mounted sensors to provide feedback for closed-loop control systems.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

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