FLEX I/O (1794 Series) | Allen-Bradley | 1794-IB16 1794IB16 SER A Flex I/O Input Module 1794IB16AB

Product Description: Allen-Bradley 1794-IB16

The Allen-Bradley 1794-IB16 is a 16-channel digital input module in the FLEX I/O system, designed to monitor 24V DC input signals from field devices such as sensors, switches, and pushbuttons. It features sinking (NPN) input channels organized into two groups of 8, each with a shared common. The module is ideal for distributed I/O applications in systems where compactness, reliability, and fast signal acquisition are key.

Key Features

• 16 digital sinking (NPN) input channels
• 24V DC operation for standard industrial field devices
• Organized into 2 groups of 8 inputs with separate commons
• LED indicators for per-channel input status
• Compatible with FLEX I/O terminal bases and adapters (e.g., EtherNet/IP, ControlNet, DeviceNet)
• High-density input solution for compact control systems

Technical Specifications

• Input Type: Sinking (NPN), 24V DC
• Voltage Range: 10–31.2V DC
• Input Current: 6 mA per channel @ 24V DC
• Input Delay: ON: ≤1 ms; OFF: ≤1 ms
• Number of Channels: 16 (2 groups of 8 inputs)
• Isolation Voltage: 50V (field-to-backplane and between groups)
• Backplane Current: 30 mA @ 5V DC
• Power Dissipation: Approx. 2.5 W
• Mounting: DIN rail via terminal base (e.g., 1794-TB3, 1794-TB3S)
• Operating Temperature: 0°C to 55°C
• Certifications: UL Listed, CE, CSA, RoHS, Class I Div 2

Application Areas

• Monitoring switches, sensors, and discrete signals in automation
• Packaging and material handling equipment
• Machine tools and assembly lines
• Building automation and process monitoring systems
• OEM applications requiring high-density digital input

Advantages

• Compact form factor reduces control panel space
• Sinking inputs compatible with sourcing (PNP) field devices
• Fast response time suitable for real-time control
• Easy integration into FLEX I/O distributed control networks
• Cost-effective solution for scalable I/O systems