1734-IB4 | Allen-Bradley | POINT I/O Digital Input Module

Overview
The Allen-Bradley 1734-IB4 is a compact POINT I/O digital input module featuring four sinking input channels designed for 24 V DC control systems. It provides reliable signal acquisition for distributed I/O architectures, offering flexible mounting and simplified wiring through the POINT I/O backplane. Its open-style housing and DIN-rail design make it ideal for use in tight control enclosures or modular installations.

Key Features

• Four sinking digital input channels for 24 V DC logic signals

• Compact POINT I/O format, optimized for distributed and modular automation

• Open-style housing with quick DIN-rail installation

• Compatible with 1734-TBS and 1734-TB terminal bases

• Low power draw and high input integrity for efficient control performance

• Designed for integration with CompactLogix and ControlLogix platforms

Technical Specifications

• Manufacturer: Allen-Bradley / Rockwell Automation

• Model Number: 1734-IB4

• Product Type: POINT I/O Sink Input Module

• Number of Inputs: 4 sinking inputs

• Input Type: Digital, 24 V DC

• Input Voltage Range: 10 – 28.8 V DC

• Input Current (Nominal): 3.0 mA @ 24 V DC

• Input Delay (Typical): 1.0 ms ON / 1.0 ms OFF

• Isolation Voltage: 50 V continuous, reinforced insulation (field ↔ system)

• POINTBus Current Draw: 75 mA @ 5 V DC

• Mounting: DIN-rail via 1734-TBS or 1734-TB base

• Housing Style: Open

• Power Dissipation: 0.6 W (max.)

• Dimensions (H × W × D): 7.55 × 1.2 × 5.6 cm

• Weight: Approx. 0.02 kg (0.04 lb)

Performance and Reliability
The module is engineered for stable performance under continuous industrial operation. Each input channel provides fast response times and electrical isolation, ensuring dependable digital signal handling in PLC-based automation networks.

Applications

• Packaging and material-handling equipment

• Machine tools and assembly lines

• Building and facility automation

• Process control and distributed I/O systems

FAQ

Q1: What type of input signal does the 1734-IB4 accept?
A1: It supports 24 V DC sinking digital inputs for on/off signal detection.

Q2: Can this module be installed while the system is running?
A2: Yes, the POINT I/O architecture allows hot-swapping for minimal downtime.

Q3: Which base assemblies are compatible with the 1734-IB4?
A3: It mounts on 1734-TB or 1734-TBS terminal bases.

Q4: What is the recommended operating voltage range?
A4: The module operates between 10 V DC and 28.8 V DC, nominal 24 V DC.