Allen-Bradley 1794-APB PROFIBUS Adapter Module

Allen-Bradley 1794-APB PROFIBUS Adapter Module Overview

Core Technical Specifications

• Brand: Allen-Bradley
• Model: 1794-APB
• Type: PROFIBUS DP Communication Adapter
• Input Voltage: 24 VDC nominal with a 19.2-31.2 VDC range
• Protocol: PROFIBUS DP
• Max Speed: Up to 12.0 Mbps
• I/O Capacity: Controls up to 8 Flex I/O modules
• Communication Port: One 9-pin D-Shell connector
• FlexBus Current: 640 mA maximum at 5 VDC
• Isolation: 850 VDC between user power and FlexBus
• Power Draw: 400 mA maximum from the 24VDC supply
• Operating Temp: 0 to 55 °C (32 to 131 °F)

Installation & Environmental Ratings

• Mounting: DIN rail or panel mount (Kit: 1794-NMI)
• Note: Use a highly conductive DIN rail for proper system grounding.
• Warning: Avoid rails made from poorly conducting or corrosive materials.
• Storage Temp: -40 to 85 °C (-40 to 185 °F)
• Power Dissipation: 7.68 Watts maximum at 19.2 VDC
• Dimensions: Approximately 3.7 x 3.6 x 3.4 inches.

Diagnostic LED Indicators

• STATUS LED (Red/Green): Shows the module's operational health.
• PROFIBUS LED (Red/Green): Indicates network activity and link status.
• Normal Operation: Both LEDs display a steady green light.
• Fault Condition: The LEDs will show a red light to signal an issue.

Frequently Asked Questions (FAQ)

• Q: Is the 1794-APB adapter brand new and genuine?
  A: Yes, we supply only 100% brand new, original Allen-Bradley equipment.
• Q: How many I/O modules can this adapter support?
  A: The 1794-APB can support the installation of up to 8 Flex I/O modules on its backplane.
• Q: What is the operating voltage range for this module?
  A: It operates on 24VDC nominal, with a safe input range from 19.2 to 31.2 VDC.
• Q: What PROFIBUS communication speeds does it support?
  A: It supports all standard PROFIBUS DP rates up to the maximum of 12.0 Mbps.
• Q: How do I monitor the status of the module?
  A: Use the two diagnostic LEDs. A green STATUS light means normal operation, and a green PROFIBUS light indicates good network communication.
• Q: How quickly will my order ship?
  A: We process and ship orders within 5 business days via reliable carriers like DHL, FedEx, or UPS.

© 2026 NexAuto Technology Limited. All rights reserved.
Original Source: https://www.nex-auto.com/
Contact: sales@nex-auto.com | Phone: +86 153 9242 9628