Allen-Bradley 1794-IB16 FLEX I/O Input Module
FLEX I/O digital input module, 16 sinking inputs, 24V DC nominal, 10…31.2V DC input range, 4.6 kΩ input impedance, Flexbus current 20 mA @ 5V DC
Lifecycle Status: Active Mature
The Allen-Bradley 1794-IB16 FLEX I/O input module is designed for distributed machine and process I/O applications that require 16 current-sinking digital inputs in a compact modular platform. It is used with FLEX I/O adapters and compatible terminal bases to bring 24V DC field input signals into a Rockwell Automation control architecture.
Lifecycle Status: Active Mature
- Product type: FLEX I/O digital input module
- Catalog number: 1794-IB16
- Input channels: 16 current-sinking inputs
- On-state voltage: 10V DC minimum, 24V DC nominal, 31.2V DC maximum
- On-state current: 2.0 mA minimum, 8.0 mA nominal, 12.0 mA maximum
- Off-state voltage: 5.0V DC maximum
- Off-state current: 1.5 mA maximum
- Nominal input impedance: 4.6 kΩ
- Isolation voltage: 50V continuous, basic insulation type
- Type tested isolation: 707V DC for 60 s, between field side and system
- Flexbus current: 20 mA at 5V DC
- Power dissipation: 3.5 W maximum at 31.2V DC
- Thermal dissipation: 11.9 BTU/hr maximum at 31.2V DC
- External DC power supply voltage: 24V DC nominal
- External DC power supply voltage range: 10…31.2V DC, including 5% AC ripple
- Indicators: 16 yellow status indicators
- Keyswitch position: 2
- Recommended terminal bases: 1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK, 1794-TBKD, 1794-TB37DS
- Approximate dimensions with module installed: 94 x 94 x 69 mm
- Approximate weight: 74 g
- Enclosure type rating: None, open-style
- Operating temperature: -20…+55 °C
This module fits FLEX I/O distributed I/O assemblies used in panel-mounted industrial automation systems where modular field wiring, status indication, and networked remote I/O are required. It is suitable for control panels and machine sections that use 24V DC discrete input devices and need compact integration with FLEX I/O adapters.