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Allen Bradley Signal Conditioners 931N-X221

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931N-X221

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The Allen Bradley 931N-X221 functions as a bipolar signal converter with a single channel. It operates with both current inputs ranging from -23 to 23 mA and voltage inputs from -11.5 to +11.5V.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 931N-X221

ManufacturerAllen Bradley
Product TypeBipolar Signal Converter
Product LineSignal Conditioners
Part Number931N-X221
Weight25.00 lbs (11.34 kg)
UPC191326317979
Number of Channels1 Channel
Current Input-23 to 23 mA
Input Voltage Drop< 1V DC @ 23 mA
Voltage Input-11.5 to +11.5V
Input Resistance≥ 1 MΩ
Current Output0 to 23 mA
Voltage Output0 to 10 VDC
Cutoff Frequency≥100 Hz, 10 Hz
Load (@ Current Output)≤ 600 Ω
Load (@ Voltage Output)≥ 10 kΩ
Supply Voltage24 VDC
Power Consumption0.56/ 0.8 W
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The 931N-X221, part of Allen Bradley's signal conditioners, serves as a versatile bipolar signal converter. It accommodates current inputs between -23 mA and 23 mA, permitting a wide range of operation. Voltage inputs can vary from -11.5 V to +11.5 V. The input resistance of the device reaches or exceeds 1 MΩ, ensuring minimal loading effect on the signal source.

For output capabilities, the device delivers a current output range of 0 to 23 mA and supports voltage output up to 10 VDC. When managing current outputs, the load can be up to 600 Ω, while the voltage output supports loads of at least 10 kΩ. These specifications allow for versatile applications in various measurement and control contexts.

This signal converter operates with a supply voltage of 24 VDC, drawing a power consumption of 0.56 to 0.8 watts during operation. The input voltage drop is less than 1V DC at 23 mA, contributing to the efficiency of the device. Additionally, the device features a cutoff frequency of at least 100 Hz, ensuring effective signal processing for applications requiring precise control and analysis.