1794-ASB | Allen-Bradley FLEX Remote I/O Adapter 24VDC PS 8 I/O Module Capacity

Description 

The Allen-Bradley 1794-ASB is a Flex I/O communication adapter. This adapter is a DIN rail mounted device, which features One (1) Remote I/O (RIO) communication port, used for connecting Flex I/O rack to RIO capable controllers. It supports 57.6Kbps, 115.2Kbps, and 230.4kbps communication rate with an input voltage requirement of 19.2 - 31.2 VDC. It supports installation of up to Eight (8) Flex I/O modules.

Technical Specifications 

Information About 1794-ASB

The 1794-ASB is an Allen-Bradley Remote I/O communication Adapter module. This product belongs to the Flex I/O product family of distributed I/O modules.

The 1794-ASB has One (1) Remote I/O interface. This RIO protocol is a legacy protocol, utilizing Belden 9463 or equivalent cables for connecting the device to the RIO scanner. This module is compatible for use with Allen-Bradley Legacy controllers such as PLC2, PLC3 and PLC5 controllers as well as SLC500 automation platforms. It may also be used modern Logix controller platforms as well as with 3rd party devices and encompass partner modules.

The 1794-ASB sends and receives data to and from the controller, via Block Transfer Read (BTR) and Block Transfer Write (BTW) instructions. Using these instructions, packets of data may be sent simultaneously or sequentially, depending of the required speed.

The 1794-ASB supports communication rate of 57.6Kbps, 115.2Kbps, and 230.4kbps. The module’s intended supply voltage range is 11VDC-31.2VDC, including 5% ac ripple while the nominal supply is 24VDC. It supports installation of up to Eight (8) Flex I/O modules, for successful implementation of distributed I/O architecture. This module has built-in status indicator such as Power LED, Adapter Active LED, Adapter Fault LED and Local Fault LED. This module is mounted to a standard DIN rail and has an open type enclosure which means the 1794-ASB requires installation inside an appropriate enclosure that protects the device from industrial element and contaminants.

The maximum consumption of power is 450 mA from a constant 24 Volts DC power input. The maximum power dissipation is 4.6 Watts at 31.2 Volts DC and the thermal dissipation is 15.7 BTU/hour at 31.2 Volts DC.

The 1794-ASB’s dimensions are approximately 4x 2x 4 inches and weigh only 6 ounces. The Allen-Bradley 1794-ASB is an obsolete Adapter Module and is part of the FLEX I/O series. It connects FLEX I/O modules to I/O scanner ports via a communication network. It has a built-in power supply which converts 24VDC to 5 VDC for the backplane in order to power the FLEX I/O modules. It also functions with the Allen Bradley PLC 3 and 5 series. Additionally, the 1794-ASB can recognize the safe state data for the FLEX Integral analog modules, and it is capable of using thirty-two point FLEX I/O units. The user must use a 1794-ASB Series D or later module when utilizing the FLEX Integral analog modules in the configuration of your setup.

Manufacturer information

Allen‑Bradley components, integrated control and information solutions are built for demanding industrial applications. We integrate control and information across the enterprise to make you as productive as possible.

IQElectro 2 Year Warranty

IQElectro offers a 2-Year Warranty on all our products. This complimentary two-year warranty ensures that every purchase from IQElectro is a secure investment in the future of your company.
Warranty Terms and Conditions

IQElectro is not an authorized distributor.

IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses. Some hardware products may contain software and firmware and may not be legally operated without first obtaining an appropriate license from the manufacturer. IQElectro makes no representation as to whether a product will or will not have software or firmware and, if it does, whether the software or firmware is the revision level that you need for your application. IQElectro also makes no representations as to your ability or right to download or otherwise obtain software or firmware for the product from the Original Manufacturer, its distributors, or any other source. IQElectro also makes no representations as to your right to install any such software or firmware on the product. IQElectro will not obtain or supply software or 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 software or firmware. Customer acknowledges and agrees that IQElectro DOES NOT provide any software, firmware, operating system, or right-to-use licenses with the products it sells. Customers understand and agree that proper software (firmware) licensing, maintenance, and upgrades are subject to the applicable manufacturer's Licensing Agreement or similar document. Disclaimer Policy.