Product Overview

The ​Allen-Bradley 1746-IB32​ is a 32-point digital input module designed for Rockwell Automation's SLC 500 programmable controller system. This high-density input module provides reliable sensing capability for industrial control applications, offering seamless integration with Allen-Bradley's SLC 500 platform. The module features 32 isolated input channels in a single slot design, making it ideal for applications requiring high point density in space-constrained environments.

Key Features

• ​High-Density Design​ - 32 input points in single slot configuration

• ​Sinking Inputs​ - 24V DC sinking inputs for standard industrial sensors

• ​LED Status Indicators​ - Individual point status and module diagnostics

• ​Isolated Input Groups​ - 8-point isolation groups for noise immunity

• ​Compact Form Factor​ - Space-efficient design for control cabinet optimization

• ​Easy Integration​ - Seamless compatibility with SLC 500 platform

• ​Robust Construction​ - Designed for industrial environments

Technical Specifications

Electrical Characteristics

Input Specifications

• ​Input Configuration​ | 32 sinking inputs (NPN)

• ​Input Groups​ | 4 groups of 8 points with common terminals

• ​Input Current​ | 7mA typical @ 24V DC

• ​Leakage Current​ | ≤1.0mA maximum

• ​Voltage Threshold​ | ON: ≤5V DC, OFF: ≥15V DC

Protection Features

• ​Overvoltage Protection​ | 30V DC continuous maximum

• ​Reverse Polarity​ | Protected against reverse voltage

• ​Noise Immunity​ | 1000V peak surge protection

• ​Isolation​ | 500V RMS between field and logic

Performance Characteristics

Switching Performance

• ​Response Time​ | ON: ≤5ms, OFF: ≤10ms

• ​Filtering​ | Built-in noise filtering

• ​Update Rate​ | Synchronous with SLC 500 scan time

• ​Status Monitoring​ | Real-time point status available

Diagnostic Capabilities

• ​Point Status LEDs​ | Individual green LEDs for each input

• ​Module Status LED​ | Green/red status indication

• ​Fault Detection​ | Power and communication monitoring

• ​Diagnostic Feedback​ | Status available through backplane

Applications

The Allen-Bradley 1746-IB32 is ideal for:

• ​Discrete Manufacturing​ - High-density sensor monitoring

• ​Material Handling​ - Conveyor system sensor inputs

• ​Packaging Machinery​ - Multiple sensor point applications

• ​Assembly Lines​ - High-point count input requirements

• ​Process Control​ - Multiple limit switch and sensor monitoring

• ​Machine Control​ - Comprehensive input point coverage

• ​Industrial Automation​ - General purpose high-density input needs

System Integration

SLC 500 Compatibility

• ​Chassis Compatibility​ | All SLC 500 chassis types

• ​Slot Requirements​ | Single slot occupancy

• ​Backplane Communication​ | Fully integrated with SLC 500 system

• ​Configuration​ | Auto-configure with RSLogix 500

Controller Integration

• ​SLC 5/01​ | Compatible with all SLC 5/01 processors

• ​SLC 5/02​ | Full functionality with SLC 5/02

• ​SLC 5/03​ | Supported by all SLC 5/03 processors

• ​SLC 5/04​ | Compatible with SLC 5/04 systems

• ​SLC 5/05​ | Works with Ethernet-enabled SLC 5/05

Installation & Operation

Physical Installation

• ​Chassis Mounting​ | Standard SLC 500 chassis

• ​Slot Compatibility​ | Any slot position

• ​Orientation​ | Horizontal mounting only

• ​Spacing​ | No special spacing requirements

Electrical Installation

• ​Wiring​ | Removable terminal block

• ​Terminal Torque​ | 0.5-0.6 Nm

• ​Wire Preparation​ | Strip length 7-8mm

• ​Grounding​ | Proper grounding for noise immunity

• ​Common Connections​ | 4 common terminals (8 points per common)

Configuration

• ​Addressing​ | Automatic through backplane

• ​Programming​ | RSLogix 500 programming software

• ​Configuration​ | No hardware configuration required

• ​Diagnostics​ | Built-in status monitoring

Certifications & Compliance

• ​Safety Standards:

  • UL Listed

  • cUL Listed

  • CE Marked

• ​EMC Compliance:

  • EN 61326-1 (Industrial environments)

• ​Environmental Standards:

  • RoHS Compliant

• ​Quality Standards:

  • ISO 9001 Manufacturing

Why Choose Allen-Bradley 1746-IB32?

• ​High Density​ - 32 points in single slot for space savings

• ​Proven Reliability​ - Rockwell Automation quality and durability

• ​Easy Integration​ - Seamless SLC 500 system integration

• ​Industrial Robustness​ - Designed for harsh environments

• ​Visual Diagnostics​ - Comprehensive status indication

• ​Global Compliance​ - International certifications

• ​Technical Support​ - Backed by Rockwell Automation's global network

Maintenance & Service

• ​Module Replacement​ | Hot-swappable capability

• ​Terminal Block​ | Removable for easy wiring

• ​Diagnostic Monitoring​ | Continuous status monitoring

• ​Firmware Updates​ | Not field upgradeable

• ​Technical Support​ | Comprehensive documentation available