

The Allen-Bradley 1794-IA16 FLEX I/O AC Input Module is a cornerstone component for modern distributed control systems, engineered to interface directly with AC field devices such as limit switches, push buttons, and proximity sensors. This 16-point module operates at 85-265VAC (47-63 Hz), providing a cost-effective solution for monitoring AC signals in manufacturing, process control, and material handling applications. Its rugged design features optical isolation per channel, ensuring reliable data acquisition even in electrically noisy environments. The module mounts onto any 1794-series terminal base (e.g., 1794-TB3 or 1794-TB6) and communicates via the FLEX I/O backplane, supporting both local and remote I/O configurations. With a wide operating temperature range of 0°C to 60°C and UL, CSA, and CE certifications, the 1794-IA16 is built for long-term, maintenance-free service in demanding industrial settings.
| Parameter | Specification |
|---|---|
| Product Family | Allen-Bradley FLEX I/O |
| Model Number | 1794-IA16 |
| Input Type | AC Discrete Input |
| Number of Inputs | 16 (single-ended, grouped) |
| Input Voltage Range | 85-265VAC (47-63 Hz) |
| Input Current (per point) | 10 mA typical at 120VAC |
| Off-State Voltage | ≤ 20VAC |
| On-State Voltage | ≥ 60VAC |
| Isolation Voltage | 2500VAC (channel-to-backplane, 1 min) |
| Backplane Current (5V DC) | 150 mA (typical) |
| Backplane Current (24V DC) | 0 mA (no power required from backplane) |
| Power Dissipation | 3.5W (max) |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
| Relative Humidity | 5% to 95% (non-condensing) |
| Vibration Resistance | 5 g Standard Models 10-500 Hz (per IEC 60068-2-6) |
| Shock Resistance | 30 g (per IEC 60068-2-27) |
| Terminal Base Compatibility | 1794-TB3, 1794-TB6, 1794-TB3S, 1794-TB6S |
| Communication Adapter | 1794-AENT, 1794-ACNR, 1794-ASB, etc. |
| Indicators | Green LED per input (on-state) |
| Wiring | Removable terminal block, 14-22 AWG |
| Weight | 0.18 kg (0.4 lb) |
| Certifications | UL 508, CSA C22.2 No. 142, CE, ATEX (Zone 2) |

What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22