1734-IB4

Reliable digital input module 1734‑IB4 for distributed I/O systems

The 1734‑IB4 is a POINT I/O module from Allen‑Bradley designed to provide 4 sinking digital input channels for 24 V DC signals. It is compact, modular, and supports hot-swappable replacement under power, making it ideal for distributed automation architectures that require flexible and efficient I/O expansion.

Technical specifications

• Module type: Digital DC sinking input

• Number of inputs: 4 channels

• Nominal input voltage: 24 V DC

• Input voltage range: 10 V to 28.8 V DC

• On‑state current: 2 mA (min) to 5 mA (max); nominal 4 mA

• Off‑state current (max): 1.5 mA

• Input filter time: 0.5 ms hardware + 0…63 ms software selectable

• POINTBus current: 75 mA @ 5 V

• Power dissipation: ~1.0 W

• Isolation voltage: 50 V continuous; withstands 2500 V DC for 60 s

• Indicators: 1 green/red for module/network status; 4 yellow for channel input status

• Mounting: DIN rail via compatible base (1734-TB / TBS)

• Dimensions: ~56 mm × 12 mm × 75.5 mm

• Weight: ~31.8 g

• Operating temperature: –20 °C to +55 °C

• Storage temperature: –40 °C to +85 °C

• Humidity: 5% to 95%, non-condensing

• Vibration: 5 g @ 10–500 Hz

• Shock: 30 g operating, 50 g non-operating

Key advantages

• Compact design minimizes panel space

• Supports hot insertion / removal under power (RIUP)

• Flexible input filter time for signal conditioning

• Part of modular POINT I/O architecture

• Clear LED indicators aid diagnostics

• Efficient power usage and modest dissipation

Application and use cases of 1734‑IB4

This module is suited for use in distributed control systems, machine-level I/O racks, sensor monitoring, factory automation, conveyor control, and wherever modular I/O expansion is needed. It integrates well into systems where flexibility and minimal wiring are priorities.

About the manufacturer

Allen‑Bradley (Rockwell Automation) is a leading manufacturer of industrial automation components. The POINT I/O family provides modular, scalable I/O solutions for distributed control architectures, offering efficient and reliable performance in demanding industrial environments.