1756-IB32 | Allen Bradley ControlLogix 32-Point 12/24 VDC Digital Input Module

Product Description

The Allen Bradley 1756-IB32 is a high-density digital input module for ControlLogix systems, designed to monitor up to 32 DC input points. It supports a wide operating voltage range and provides reliable input detection with configurable filter times. With electronic keying, removable terminal blocks, and robust electrical specifications, the module ensures dependable integration into large-scale automation systems.

Technical Specifications

• Manufacturer Allen Bradley

• Product Line ControlLogix 1756 Series

• Product Type Digital DC Input Module

• Part Number 1756-IB32

• Weight 0.50 lbs (0.23 kg)

• Inputs 32 DC input points

• Nominal Input Voltage 12–24 V DC (sink)

• Operating Voltage Range 10–31.2 V DC

• Module Keying Electronic

• Maximum Operating Current 5.5 mA

• Minimum Operating Current 2 mA @ 10 V DC

• Off-State Current (Max) 1.5 mA

• Input Delay Times

• OFF to ON: 380 µs max + filter time

• ON to OFF: 420 µs max + filter time

• General delay: 2 ms + filter time

• Backplane Current Load

• 120 mA @ 5 V DC

• 2 mA @ 24 V DC

• 100 mA @ 5.1 V DC

• Power Dissipation (Max) 6.2 W @ 60 °C

• Thermal Dissipation 21.1 BTU/hr @ 60 °C

• Terminal Blocks Supported 1756-TBCH, 1756-TBSH

Application Scenarios

• Large-scale digital input monitoring in ControlLogix systems

• Machine-level automation requiring high-density input modules

• Distributed control systems with configurable input filtering

FAQ

Q: How many input points does the 1756-IB32 support?  A: It provides 32 DC input channels.

Q: What is the operating voltage range?  A: 10–31.2 V DC.

Q: Which terminal blocks are compatible?  A: 1756-TBCH and 1756-TBSH removable terminal blocks.

Comparable Models

• 1756-IB32: 32-point DC input module (this model)

• 1756-OB32: 32-point DC output module

• 1756-IB16: 16-point DC input module