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Allen Bradley Signal Conditioners 931S-M321

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931S-M321

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The 931S-M321 is a current monitoring converter designed by Allen Bradley, suitable for both AC and DC input signals. It incorporates true RMS measurement technology and delivers relay output, making it highly efficient for monitoring applications.

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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 931S-M321

ManufacturerAllen Bradley
Product TypeCurrent Monitoring Converter
Product LineSignal Conditioners
Part Number931S-M321
Weight25.00 lbs (11.34 kg)
Input Signal TypeAC and DC
Measurement MethodTrue RMS
Connection TypeContactless through-hole
Through-hole Diameter10 mm
Supply Voltage24 VDC
Output TypeRelay Output
Mounting Type35 mm DIN rail mount
Status IndicatorLEDs
Minimum Storage Temperature0°C
Maximum Storage Temperature40°C
Installation Altitude1000 m
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The Allen Bradley 931S-M321 functions as a versatile current monitoring converter, adept at processing input signals in both AC and DC formats. This unit employs a true RMS method for precise measurement, ensuring accuracy regardless of the waveform. For installation, it utilizes a contactless through-hole connection style with a diameter of 10 mm, facilitating straightforward integration into existing systems.

Powered by a 24 VDC supply voltage, the device ensures reliable operation while producing a relay output that can control external devices or trigger alarms when necessary. The mounting is simplified through its design for 35 mm DIN rail, allowing for efficient use of space in control panels. An LED status indicator provides immediate visual feedback of operational conditions, enhancing user awareness.

Designed with storage in mind, the 931S-M321 can be safely stored within a temperature range from 0°C to 40°C. This capability supports its reliability in varying environments. Additionally, it is rated for installation up to 1000 meters in altitude, making it suitable for diverse applications across different industrial settings.