Allen-Bradley 1791-IOBB Block I/O Module
$123.00
$320.00
Description
Allen-Bradley 1791-IOBB Block I/O Module
The Allen-Bradley 1791-IOBB, also cataloged as the 1791-IOBB Block I/O Module, operates as a dedicated hardware component for discrete signal acquisition and output switching within PLC-2, PLC-3, and PLC-5 control platforms. The module provides 10 sinking inputs and 6 sourcing outputs with a 10-30 VDC I/O supply range.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1791-IOBB |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | 0.64 lbs |
| Operating Temp | 0 to 55 deg C |
| Power Consumption | 12.39 W maximum, 8.73 W typical |
| Product Line | 1791 Block I/O |
| Module Type | 16 Point I/O Module |
| Input Channels | 10 sinking inputs |
| Output Channels | 6 sourcing outputs |
| Input Voltage Range | 20.5-27.6 VDC |
| Rated Output Voltage | 10-30 VDC |
| Output Type | Source |
| Output Current Rating | 200 mA |
| Thermal Dissipation | 42.4 BTU/hr maximum, 29.8 BTU/hr typical |
| Storage Temperature | -40 to 85 deg C |
| Relative Humidity | 5% to 95% non-condensing |
Industrial Control Bus and I/O Architecture
The 1791-IOBB is designed for Allen-Bradley Block I/O applications and supports discrete signal exchange between field devices and PLC control systems. The module provides I/O density scaling by integrating multiple digital input and output points in a compact block configuration.
The module operates with PLC-2, PLC-3, and PLC-5 system architectures. Firmware flash compatibility and controller configuration parameters must be verified when integrating the module into existing control platforms.
The I/O structure consists of current sinking input channels and current sourcing output channels. The source output design provides DC switching capability for connected field loads within the specified voltage range.
Frequently Asked Questions
Q: How many input and output points are available on the 1791-IOBB module?
A: The module provides 10 sinking input points and 6 sourcing output points, for a total of 16 discrete I/O points.
Q: What type of output circuit is used by the 1791-IOBB?
A: The module uses sourcing output circuits with a rated output voltage range of 10-30 VDC.
Q: Is the 1791-IOBB compatible with modern Ethernet-based networks?
A: The available technical data identifies compatibility with PLC-2, PLC-3, and PLC-5 platforms. Ethernet-based compatibility is not specified.
Field Installation Guidelines
Install the 1791-IOBB according to the mechanical requirements of the control enclosure and verify that mounting conditions support proper module retention. Confirm supply voltage polarity and terminal assignments before applying power.
Route discrete I/O wiring separately from high-voltage conductors and sources of electrical noise. Use appropriate grounding and shielding practices according to the overall control system installation requirements.
Before operation, verify each input channel state change and confirm that output channels switch correctly under the connected field load conditions. Check controller configuration parameters and I/O addressing before placing the module into service.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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