1794-ASB (SERIES C)

Overview of Allen-Bradley 1794-ASB Series C Flex I/O Communication Adapter

The Allen-Bradley 1794-ASB Series C is a Flex I/O remote I/O (RIO) communication adapter used to connect Flex I/O racks to controllers capable of Remote I/O communication. This adapter supports up to 8 Flex I/O modules and offers multiple communication speeds to accommodate various network requirements. It is DIN rail mountable and designed for seamless integration into industrial automation systems.

Key Features of 1794-ASB Series C

• Communication Ports: One RIO communication port.
• Communication Rates: Supports 57.6 Kbps, 115.2 Kbps, and 230.4 Kbps.
• Power Supply: Operates on 19.2 to 31.2 V DC (includes 5% AC ripple), nominal 24 V DC.
• FlexBus Output Current: Maximum 640 mA at 5 V DC.
• Power Consumption: Approximately 330 mA at 24 V DC.
• Isolation Voltage: 50 V continuous isolation between user power and FlexBus.
• Indicators: Power (green), Adapter Active (green), Adapter Fault (red), and Local Fault (red) LEDs.
• Mounting: DIN rail mount for easy installation.
• Dimensions: Approximately 87 mm x 68 mm x 69 mm (3.4 x 2.7 x 2.7 in).
• Operating Temperature: 0 to 55°C (32 to 131°F).
• Certifications: UL, CSA, CE, and other industrial standards compliance.

Technical Specifications

Applications / Use Cases

The 1794-ASB Series C Flex I/O Communication Adapter is ideal for integrating Flex I/O modules into industrial control networks using Remote I/O protocol. It supports efficient, flexible, and scalable I/O architectures for manufacturing, process control, and automation systems requiring reliable distributed I/O communication.