Allen Bradley 1794-IB16 Flex I/O Input Module

Product Overview

• Manufacturer: Allen‑Bradley
• Model Number: 1794‑IB16
• Product Type: FLEX I/O Digital Input Module
• Platform: FLEX I/O (Series 1794)
• Channels: 16 DC input channels
• Input Type: 24 VDC sink inputs
• Terminal Base Required: Yes (1794‑TB3, 1794‑TB3S, or equivalent)
• Dimensions: ~94 × 92 × 69 mm
• Weight: ~0.25 kg

Technical Specifications

• Input Voltage Range: 10–31.2 VDC
• Nominal Input Voltage: 24 VDC
• Input Current: ~8 mA per channel at 24 VDC
• Signal Delay: 1 ms ON / 1 ms OFF typical
• Isolation: Channel‑to‑system isolation provided via optocouplers
• Backplane Current Draw: ~50 mA at 5 VDC
• Power Dissipation: ~1.2 W max
• Operating Temperature: 0–55 °C
• Storage Temperature: –40 to 85 °C
• Humidity: 5–95% non‑condensing

Key Features

• 16 sink input channels for compact distributed I/O.
• Hot‑swap capability (RIUP) allows removal/insertion under power.
• Flexible terminal base options for wiring convenience.
• Noise immunity and isolation for industrial environments.
• Compact design reduces panel space requirements.

Application Scenarios

• Distributed I/O in ControlLogix and PLC‑5/SLc systems.
• Factory automation requiring multiple DC input points.
• Process industries where modular, hot‑swappable I/O is critical.
• OEM machinery needing compact distributed input modules.