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1794-OF8IH

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Rockwell Disclaimer: The product is used surplus. PDF 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 PDF 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, PDF 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. PDF 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. PDF Supply also makes no representations as to your right to install any such firmware on the product. PDF 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.

PDF Supply is NOT an authorized distributor for this manufacturer and therefore the manufacturer’s warranty does not apply. Product comes with PDF Supply's 1-year, 2-year, or 3-year warranty.

Other Available Revisions for the 1794-OF8IH 1794-OF8IH//A

Common misspellings:
  • l794-OF8IH
  • 179A-OF8IH
  • 1794-0F8IH
  • 1794-OFbIH
  • 1794-OF81H
  • 1794-OF8lH
  • 1794OF8IH

Technical Specifications for 1794-OF8IH

BrandAllen-Bradley / Rockwell Automation
SeriesFlex I/O
Part number1794-OF8IH
Product typeIsolated output HART analog module
Channels8
Terminal bases1794-TB3S, 1794-TB3
Resolution16 bits, unipolar
Current resolution0.305 microamps per cnt – unipola
Conversion rate10 milliseconds
Load reactance10 millihenry
Load resistance0 to 750 Ohms
Maximum power dissipation5 Watts
Thermal dissipation17.06 BTU/hour

About 1794-OF8IH

The 1794-OF8IH output module is a HART  isolated analog output module which belongs to the FLEX I/O product line from Allen-Bradley. The module should be mounted in an ATEX enclosure with a minimum environmental protection rating of IP 54. To obtain performance as per manufacturer specifications, the module should be used within the ratings and conditions specified by the manufacturer. The rated voltage should not be exceeded by transient disturbances that are more than 140% of the maximum rated voltage. The 1794-OF8IH output module should only be used with ATEX-rated backplanes. All external connections that terminate on the module should be secured by sliding latches, screws, or threaded connectors. The module must not be disconnected until the area is known to be non-hazardous and the power has been disconnected.

The DC power cable used for the 1794-OF8IH output module should not exceed 3 meters in length. Analog modules and digital modules should be powered from independent power supplies to minimize electrical noise. Eight single-ended and isolated outputs are provided on the 1794-OF8IH output module. Allen-Bradley recommends using the terminal bases with the catalog numbers 1794-TB3S and 1794-TB3 with the 1794-OF8IH output module. The module resolution is 16-bits unipolar. The current resolution is 0.305 microamps per count unipolar. The supported data formats include engineering units, percent of full scale, and RAW/proportional count. The conversion rate is 10 milliseconds and the conversion type is the 16-bits digital to analog converter type. The load reactance and resistance are 10 millihenry and 0 to 750 Ohms, respectively. The maximum rated power dissipation and thermal dissipation at 24 Volts DC are 5 Watts and 17.06 BTU per hour, respectively.

The Allen-Bradley 1794-OF8IH module is a HART isolated analog module. Allen-Bradley recommends use of the module only with ATEX-rated backplanes. 

F.A.Q for 1794-OF8IH

PDF Supply sells used surplus products. PDF Supply is not an authorized distributor, affiliate, or representative for the brands we carry. Products sold by PDF Supply come with PDF Supply’s 1-year, 2-year, or 3-year warranty and do not come with the original manufacturer’s warranty. Designated trademarks, brand names and brands appearing herein are the property of their respective owners. This website is not sanctioned or approved by any manufacturer or tradename listed.

Rockwell Disclaimer: The product is used surplus. PDF 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 PDF 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, PDF 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. PDF 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. PDF Supply also makes no representations as to your right to install any such firmware on the product. PDF 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.