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Allen Bradley Flex I/O 1794 1794-ASB2

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1794-ASB2

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The 1794-ASB2 by Allen Bradley is a Remote I/O Adapter within the Flex I/O series. Designed to accommodate two modules, it operates within a voltage range of 19.2 to 31.2 V DC while nominally utilizing 24 V DC for optimal performance.

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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 1794-ASB2

ManufacturerAllen Bradley
Product TypeFLEX I/O Remote I/O Adapter
Product LineFlex I/O 1794
Part Number1794-ASB2
UPC612598170890
Weight0.44 lbs (0.20 kg)
Module Capacity2 Modules
Communication Speed57.6/115.2/230.4 Kbps
Input Voltage19.2–31.2 V DC
Nominal Voltage24 V DC
FlexBus Current640 mA max
Power Use4.2 W
24V Load175 mA
Isolation50 V Continuous
ESD Protection8 kV Air Discharge
RF Immunity10 V/m
EFT Immunity±2 kV
Surge Immunity±2 kV
Operating Temp-20 to 55°C
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The Allen Bradley 1794-ASB2 functions as a Remote I/O Adapter in the Flex I/O 1794 series, suitable for various automation tasks. It features a module capacity that supports integration of up to two modules, facilitating expanded functionalities. The unit operates efficiently with an input voltage range spanning from 19.2 to 31.2 V DC, nominally set at 24 V DC.

Communication capabilities include adjustable speeds of 57.6, 115.2, and 230.4 Kbps, providing flexible data transfer options tailored to specific operational needs. It has a maximum FlexBus current of 640 mA, ensuring adequate power for connected devices. Power consumption is rated at 4.2 W, making it efficient for continuous operations. The load capacity for the 24V source is noted at 175 mA, supporting standard device functionalities.

For enhanced safety and durability, the unit offers a continuous isolation voltage rating of 50 V. It incorporates comprehensive protection features, including protection against electrostatic discharge of up to 8 kV during air discharge, 10 V/m RF immunity, and resistance to electrical fast transients/ surges rated at ±2 kV. The device is designed to operate effectively within a temperature range of -20 to 55 degrees Celsius, making it versatile for various environmental conditions.

Revision Part #Also known as
1794-ASB2 Ser A1794-ASB2/A, Series A, Rev A
1794-ASB2 Ser B1794-ASB2/B, Series B, Rev B
1794-ASB2 Ser C1794-ASB2/C, Series C, Rev C
1794-ASB2 Ser D1794-ASB2/D, Series D, Rev D
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