Allen-Bradley 1794-ASB2 Remote I/O Adapter

Series#: AllenBradley

Product Details

Model: 1794-ASB2 – Allen-Bradley Remote I/O Adapter with 24V DC power supply, designed for Flex I/O systems.
Supports up to 2 I/O modules per adapter, ideal for compact distributed control applications.
Operates on 24V DC power supply with robust isolation for reliable performance in harsh industrial environments.
Seamless integration with Allen-Bradley PLCs via remote I/O (RIO) network, supporting data rates up to 57.6 kbps.
Compact form factor reduces cabinet space and simplifies wiring in modular automation systems.
Compatible with a wide range of Flex I/O modules, including digital, analog, and specialty types.
100% Original product. We provide efficient, traceable, and secure global shipping solutions.

Specification

The Allen-Bradley 1794-ASB2 Remote I/O Adapter is a critical component for distributed control architectures, enabling seamless communication between a PLC and up to two Flex I/O modules over a remote I/O network. Powered by 24V DC, this adapter ensures reliable data exchange in demanding industrial settings, with a rugged design that withstands vibration and temperature extremes. Whether used in manufacturing lines, process plants, or material handling systems, the 1794-ASB2 delivers precise control and diagnostics, making it a trusted choice for legacy and modern automation upgrades.

Parameter	Specification
Model	1794-ASB2
Product Type	Remote I/O Adapter (Flex I/O)
Power Supply Voltage	24V DC (nominal), 19.2-31.2V DC range
I/O Module Capacity	2 modules maximum
Communication Protocol	Allen-Bradley Remote I/O (RIO) network
Data Rate	57.6 kbps (standard RIO rate)
Network Interface	Single-channel RIO with twisted-pair cable (Belden 9463 or equivalent)
Current Draw (at 24V DC)	150 mA typical (without modules)
Isolation Voltage	1500V AC between power and network, 500V DC between network and logic
Operating Temperature	0°C to +60°C (32°F to 140°F)
Storage Temperature	-40°C to +85°C (-40°F to 185°F)
Relative Humidity	5% to 95% non-condensing
Vibration Resistance	5 g Standard Models 10-500 Hz (per IEC 60068-2-6)
Shock Resistance	30 g peak, 11 ms duration (per IEC 60068-2-27)
Enclosure Rating	IP20 (open-style, suitable for cabinet mounting)
Dimensions (H x W x D)	Approx. 87 x 52 x 75 mm (3.43 x 2.05 x 2.95 in)
Weight	Approx. 0.15 kg (0.33 lb)
LED Indicators	Power, Network Status, Module Status (per module)
Compatible Modules	1794-IB16, 1794-OB16, 1794-IE8, 1794-OE8, and other Flex I/O modules
Certifications	CE, UL, CSA, C-Tick, ATEX (Zone 2 with proper installation)
Mounting	DIN rail or panel mount (with optional bracket)
Wiring	Removable terminal block (spring clamp or screw type, depending on revision)
Protection Features	Reverse polarity protection, overcurrent protection on power input
Warranty	Standard 1-year manufacturer warranty (extended available)