Allen-Bradley 1794-APB FLEX I/O PROFIBUS Adapter Module
$123.00
$320.00
Description
Allen-Bradley 1794-APB FLEX I/O PROFIBUS Adapter Module
Configured for PROFIBUS DP communication and Flex I/O data exchange in Allen-Bradley Flex I/O 1794 systems, the Allen-Bradley 1794-APB (1794-APB PROFIBUS Adapter Module) provides direct physical/electrical execution between PROFIBUS networks and installed Flex I/O modules.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1794-APB |
| Brand | Allen-Bradley |
| Origin | United States |
| Product Type | PROFIBUS Adapter Module |
| Product Line | Flex I/O 1794 |
| Module Type | Communication Adapter |
| Communication Protocol | PROFIBUS DP |
| Communication Port | One 9-pin D-shell connector |
| Transmission Speed | Up to 12 Mbps |
| Input Voltage | 24 VDC nominal |
| Input Voltage Range | 19.2-31.2 VDC |
| Flexbus Output Current | 640 mA maximum at 5 VDC |
| Isolation Voltage | 850 VDC |
| Power Consumption | 400 mA maximum |
| Power Dissipation | 7.68 W maximum at 19.2 VDC |
| Thermal Dissipation | 26 BTU/hour at 19.2 VDC |
| I/O Capacity | Supports up to 8 Flex I/O modules |
| Weight | 0.4 lbs |
| Installation Method | DIN Rail or Panel Mount |
| Panel Mount Kit | 1794-NMIADAPTER |
| Module Indicators | STATUS Red/Green, PROFIBUS Red/Green |
Profinet / EtherNet-IP Deterministic Networks and Backplane Communication
The 1794-APB operates as a PROFIBUS communication interface within the Flex I/O 1794 platform, transferring I/O status information between PROFIBUS DP masters and connected Flex I/O modules. The adapter supports communication rates up to 12 Mbps through the 9-pin D-shell PROFIBUS connector.
The module provides Flexbus communication with a maximum output current capability of 640 mA at 5 VDC for connected I/O modules. The communication structure allows installation of up to eight Flex I/O modules on the adapter assembly while maintaining controlled backplane data exchange.
The hardware design includes electrical isolation rated at 850 VDC between communication and field-side circuits. Status indication is provided through dedicated red/green LEDs for module operation and PROFIBUS network state monitoring.
Frequently Asked Questions
Q: How many Flex I/O modules can the 1794-APB support?
A: The 1794-APB adapter supports installation of up to eight Flex I/O modules on the Flex I/O system assembly.
Q: What PROFIBUS connection interface is provided on this module?
A: The module uses one 9-pin D-shell connector for PROFIBUS DP communication.
Q: Does the 1794-APB support hot-swapping of connected I/O modules?
A: The provided technical data does not specify hot-swap capability. Module replacement should follow standard Flex I/O power isolation and maintenance procedures.
Field Installation Guidelines
Install the 1794-APB on a compatible DIN rail or panel mounting assembly according to Flex I/O system installation requirements. Verify that the 24 VDC supply wiring maintains correct polarity before energizing the adapter.
Use standard PROFIBUS cable construction and maintain separation between communication wiring and high-voltage or high-current conductors to reduce electrical interference. Connect cable shielding according to the site grounding method and PROFIBUS installation practice.
Before operation, verify the PROFIBUS connector seating, network termination configuration, and LED status indicators. Confirm that connected Flex I/O modules remain within the adapter current loading capability.
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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