Allen-Bradley 1794-IA8I FLEX I/O Input Module
FLEX I/O digital input module, 8 isolated inputs, 120V AC nominal, 65…132V AC input range, configurable input filter time, 8 yellow status indicators
Lifecycle Status: Active Mature
The Allen-Bradley 1794-IA8I FLEX I/O input module is designed for distributed 120V AC signal monitoring in industrial automation systems using the FLEX I/O platform. It provides eight isolated digital input channels for machine control, panel retrofit, and remote I/O applications where AC field signals must be interfaced to a modular control architecture.
Lifecycle Status: Active Mature
- FLEX I/O digital input module
- 8 isolated AC input channels
- 120V AC nominal input voltage
- 65…132V AC external AC power voltage range
- On-state voltage, minimum: 65V AC
- On-state voltage, maximum: 132V AC
- Nominal input current: 12 mA at 120V AC
- Nominal input impedance: 10.6 kΩ
- Configurable input filter time
- Flexbus current: 30 mA at 5V DC
- Power dissipation, maximum: 4.5 W at 132V AC
- Thermal dissipation, maximum: 15.3 BTU/hr at 132V AC
- Operating temperature: 0…55 °C (32…131 °F)
- Field-side indication: 8 yellow status indicators
- Approximate dimensions (H x W x D): 94 x 94 x 69 mm
This module suits distributed machine I/O layouts that require isolated AC input monitoring for sensors, switches, and other field devices connected through a FLEX I/O adapter and terminal base assembly. It can be applied in control panels and remote I/O stations where modular expansion, service access, and channel isolation are important design considerations.
Compatible terminal base options listed for this module include 1794-TBN, 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBKD, 1794-TB3K, 1794-TB3SK, and 1794-TBNK.