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Description
Technical Specifications for 1791-IOBW
| Manufacturer | Rockwell Automation |
| Thermal Dissipation, maximum: | 51.8 BTU/hr (maximum); 25.9 BTU/hr (typical) |
| Power Dissipation, maximum: | 15.1 Watts (maximum); 7.6 Watts (typical) |
| Mounting: | Vertical / Horizontal |
| External Power, Current: | 100mA @ 24V dc; initial surge 2.0A for 10ms |
| External Power, Voltage: | 18 to 26.4V dc |
| On-state Voltage range: | 12.0 to 26.4V dc |
| No. of input Groups: | 2 groups of 16 |
| No. of Inputs: | Thirty-Two (32) |
| Part Number: | 1791-IOBW |
| Product Type: | Block I/O |
| Brand | Allen-Bradley |
| Output Voltage Range | 18.0 to 26.4V dc @ 300mA resistive |
| Part Number/Catalog No. | 1791-I0BW |
| Voltage | 24 V DC |
| Inputs per Block | 32 Sinking |
| Input On-state Voltage Range | 12-26.4 V DC |
| Input On-state Current | 1.56 mA min. |
| Input Off-state Voltage | 7V DC max. |
| Input Off-state Current | 1mA DC max. |
| Outputs per Block | 32 Sourcing |
| External Power | 18-26.4 V DC |
| Dimensions | 6.15 x 7.0 x 1.75 in. |
| Product Lifecycle Status* | Discontinued/Obsolete |
*The Allen Bradley 1791-IOBW has been discontinued by the manufacturer, however we specialize in obsolete parts and can likely still supply surplus and/or refurbished replacement 1791-IOBW units instead of migration.
About 1791-IOBW
The 1791-IOBW is a legacy device. It works as a Remote I/O module for controller platforms such as PLC2, PLC3 and PLC5 automation platforms as well as SLC500 controllers with RIO scanner 1747-SN installed however, the 1791-IOBW is not compatible with 1747-DSN.
This module supports Block I/O instructions such as Block Transfer Read (BTR) and Block Transfer Write (BTR) instructions. Using this instructions, data from the Block I/O module may be sent to the controller via Block Transfer Read (BTR) instruction while commands from the processor may be sent to the module using Block Transfer Write (BTR) instruction. These instructions are sent over a physical RIO cable medium, specifically, Belden 9463 cable or equivalent. With Remote I/O protocol, this Block I/O module may be connected to the controller following Daisy-chain topology. It supports transmission speeds of 57.6K for 10,000 cable-feet; 115.2K for 5,000 cable-feet and 230.4K 2,500 cable-feet.
