Allen-Bradley 1794-ASB2 FLEX I/O 2-Slot Remote I/O Adapter

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The Allen-Bradley 1794-ASB2 is a compact Remote I/O (RIO) adapter module designed for the FLEX I/O 1794 platform. This adapter...

رمز المنتج: 1794-ASB2

Manufacturer: Allen-Bradley
Product No.: 1794-ASB2
Product Type: Remote I/O Adapter
Product Origin: USA
Payment:T/T, Western Union
Weight: 200g
Shipping port: Xiamen
Warranty: 12 months

وصف التقييمات

The Allen-Bradley 1794-ASB2 is a compact Remote I/O (RIO) adapter module designed for the FLEX I/O 1794 platform. This adapter serves as a communication interface node, enabling the connection of up to two local FLEX I/O modules to a master programmable controller via the Allen-Bradley RIO network. It is specifically optimized for low-density, distributed automation tasks, such as remote valve control, operator interface stations, and compact machinery sub-panels.

Features

Compact Architecture: Supports a 2-slot configuration, providing a space-efficient solution for small-scale I/O requirements.
Network Compatibility: Utilizes standard Allen-Bradley Blue Hose coaxial media for reliable communication on RIO networks.
Selectable Baud Rates: Supports communication speeds of 57.6 Kbps, 115.2 Kbps, and 230.4 Kbps to match existing system requirements.
Robust Power Management: Converts 24 VDC input to a regulated 5 VDC backplane supply, providing up to 640 mA for attached modules.
Industrial Hardening: Engineered with high immunity to Electrical Fast Transients (EFT) and surges up to 2 kV, along with 8 kV ESD protection and 10 V/m RF field immunity.

Applications

The 1794-ASB2 is ideal for decentralized plant floor applications where limited I/O points are required at a specific location. Common use cases include localized control of pneumatic valve nests, remote push-button stations, and small-footprint machine control panels that require integration into a larger RIO network architecture.

Technical Specifications

Model	1794-ASB2
Communication Protocol	Remote I/O (RIO)
Module Capacity	Up to 2 FLEX I/O modules
Input Voltage	24 VDC (19.2 to 31.2 VDC range)
Power Consumption	4.2 W
FLEXbus Output	5 VDC @ 640 mA
Isolation	50 V Continuous
Operating Temperature	-20 to 55 degC
Mounting	35 mm DIN Rail or Panel Mount

Installation Guidelines

Ensure the power is disconnected before installing or removing the module from the DIN rail or terminal base.
Mount the module in a clean, dry environment; the unit is an open-style device and requires an appropriate enclosure for protection against contaminants.
Use shielded Blue Hose cable for RIO network connections to minimize electromagnetic interference.
Maintain proper grounding practices to prevent ground loops; ensure the chassis ground is connected to a low-impedance earth ground.
Verify that the external 24 VDC power supply is within the specified 19.2 to 31.2 VDC range before applying power.

FAQ

Q: Can I use this module with more than 2 I/O modules?
A: No, the 1794-ASB2 is specifically designed to support a maximum of 2 functional FLEX I/O modules.

Q: What is the primary communication medium for this adapter?
A: This module is designed for use with Allen-Bradley Blue Hose coaxial cable.

Q: Is this module suitable for high-vibration environments?
A: While robust, it is an open-style module. Ensure it is mounted securely on a 35 mm DIN rail or panel within an enclosure rated for the specific industrial environment.

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