• Allen-Bradley 1756-IB32/B
  • Allen-Bradley 1756-IB32/B
  • Allen-Bradley 1756-IB32/B
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Allen-Bradley 1756-IB32/B ControlLogix 32-Point DC Input Module

Allen-Bradley 1756-IB32/B ControlLogix 32-Point DC Input Module

The Allen-Bradley 1756-IB32/B is a high-density digital input module designed for integration within the ControlLogix platform. This Series B module provides 32 sinking input channels, enabling efficient monitoring of 12V...

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SKU: 1756-IB32/B
Proveedora: Allen-Bradley
tipo: Digital Input Module
Related Series:

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The Allen-Bradley 1756-IB32/B is a high-density digital input module designed for integration within the ControlLogix platform. This Series B module provides 32 sinking input channels, enabling efficient monitoring of 12V or 24V DC field devices, including sensors, switches, and pushbuttons. Engineered for high-density applications, this single-slot module optimizes rack space while providing robust electrical isolation and signal processing for industrial control environments.

Features

  • 32-channel sinking input configuration for high-density I/O requirements.
  • Split into two distinct groups of 16 channels, allowing for segmented power distribution and improved fault isolation.
  • Optimized for 12V and 24V DC field signaling with reliable optocoupler isolation.
  • Supports electronic keying to prevent incorrect module installation in a configured slot.
  • Compatible with standard 36-pin removable terminal blocks (RTB), such as the 1756-TBCH and 1756-TBS6H series.

Applications

This module is suitable for a wide range of industrial automation tasks, particularly where space in the chassis is limited. It is frequently employed in machine control, process monitoring, and complex assembly line automation where numerous discrete signals must be interfaced with a ControlLogix controller.

Technical Specifications

Model 1756-IB32/B
Inputs 32 (2 groups of 16)
Input Type Sinking DC
Voltage Range 10 to 31.2V DC
On-State Current 4.8 mA (at 10V) to 5.5 mA (at 31.2V)
Off-State Voltage 5V DC (max)
Backplane Power 120 mA at 5.1V DC / 2 mA at 24V DC
Power Dissipation 6.2 Watts (max)
Operating Temperature 0 to 60 degC

Installation Guidelines

  • Ensure the ControlLogix chassis is powered down before inserting or removing the module to prevent electrical damage.
  • Verify that the removable terminal block (RTB) is fully seated and locked before applying field power.
  • Maintain proper grounding practices for the chassis backplane to minimize electromagnetic interference (EMI).
  • Use shielded cables for field wiring to ensure signal integrity, especially in high-noise industrial settings.
  • Ensure the module is installed in a clean, dry environment within the specified operating temperature range of 0 to 60 degC.

FAQ

Is this module compatible with Series A systems? The 1756-IB32/B is a Series B revision; it is generally backward compatible with existing ControlLogix rack configurations, though users should verify software project settings and electronic keying requirements.

What is the purpose of the two-group configuration? The 32 channels are split into two groups of 16 to allow for independent power supply zones. This helps isolate potential electrical faults, ensuring that a short circuit in one field device group does not necessarily disable the entire module.