Allen-Bradley 1794-IA16: 16-Point AC Digital Input Module - Flex I/O

Product Description:

The Allen-Bradley 1794-IA16 is a 16-point AC digital input module within the Flex I/O family. It provides an interface to receive signals from AC-powered input devices such as limit switches, push buttons, sensors, and other signaling devices. Its modular design allows for flexible I/O system configuration, adapting to specific application needs.

Key Features:

• 16 AC Input Channels: Connects up to 16 independent AC input devices.
• Input Voltage: Operates within the 74-132 VAC, 47-63 Hz range (nominally 120 VAC).
• Non-Isolated Inputs: Inputs are not galvanically isolated from each other or the Flex I/O system backplane.
• LED Indicators: LED indicators for each input channel for easy visual diagnostics of input status.
• Removable Connectors: Removable wiring connectors simplify installation and maintenance.
• Flex I/O Adapter Compatibility: Works with various Flex I/O communication adapters, including DeviceNet, ControlNet, and EtherNet/IP, offering communication network flexibility.
• DIN Rail Mounting: Facilitates installation in electrical panels.
• Check for US Stock: Contact us to check availability in US warehouses.

Technical Specifications:

• Number of Channels: 16
• Input Voltage: 74-132 VAC, 47-63 Hz (Nominal 120 VAC)
• Input Type: AC
• Input Current (On-State): 5.49 mA at 74 VAC, 14.81 mA at 132 VAC
• Input Voltage (Off-State): 20 VAC (maximum)
• Input Impedance (Nominal): 10 kΩ
• Response Time (Typical): Off to On: 7.5 ms; On to Off: 26.5 ms
• Maximum Power Dissipation: 6.4 W @ 132 VAC
• Isolation: Non-isolated
• Connections: Screw terminals (requires 1794-TB3, 1794-TB3S, or 1794-TBN terminal base)
• Operating Temperature: 0 to 55 °C (32 to 131 °F)
• Relative Humidity: 5 to 95% non-condensing

Applications:

• Machine Status Monitoring: Detecting limit switch positions, part presence, and other discrete signals.
• Safety Systems: Monitoring safety gates and other safety devices.
• Industrial Process Control: Detecting levels, pressures, and other discrete variables.
• Building Automation: Monitoring alarms and other discrete signals.

Why Choose the Allen-Bradley 1794-IA16?

• Reliability: Allen-Bradley products are known for their durability and performance in demanding industrial environments.
• Flexibility: The Flex I/O architecture offers significant flexibility in I/O system configuration, allowing the combination of different module types within the same system.
• Easy Integration: Compatible with a wide range of Rockwell Automation controllers and communication networks.
• Diagnostics: Indicator LEDs facilitate troubleshooting and monitoring of input status.

Important Additional Information:

• Isolation: This module does not provide galvanic isolation between channels. The need for external isolation should be evaluated according to the application and safety standards.
• Datasheet: Always consult the official Rockwell Automation datasheet (publication 1794-TD001) for detailed technical information, wiring diagrams, and other important details.
• Terminal Bases: This module requires a compatible terminal base (1794-TB3, 1794-TB3S, or 1794-TBN).
• Safety Considerations: Due to the lack of isolation, it's crucial to consider safety implications in your application.