• Allen-Bradley 1756-OB16S
  • Allen-Bradley 1756-OB16S
  • Allen-Bradley 1756-OB16S
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Allen-Bradley 1756-OB16S ControlLogix DC Output Module

Allen-Bradley 1756-OB16S ControlLogix DC Output Module

Description

The 1756-OB16S is a high-reliability digital DC sourcing output module designed for the Allen-Bradley ControlLogix 1756 chassis platform. This module provides 16 electronically fused output channels, enabling precise control of...

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SKU: 1756-OB16S
Proveedora: Allen-Bradley
tipo: Digital Output Module
Related Series:

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Description

The 1756-OB16S is a high-reliability digital DC sourcing output module designed for the Allen-Bradley ControlLogix 1756 chassis platform. This module provides 16 electronically fused output channels, enabling precise control of external DC field loads. It is engineered for demanding industrial environments, including petrochemical, power generation, and mining applications, where it provides robust short-circuit protection and dual-isolated point-group architecture to ensure system uptime and minimize maintenance downtime.

Features

  • 16 electronically fused digital DC sourcing output points.
  • Two independent output groups (8 channels per group) for improved circuit isolation.
  • Integrated electronic fusing provides per-point monitoring and protection against short-circuits and inductive kickbacks.
  • Direct backplane communication for real-time status, fault diagnostics, and module inhibition.
  • Standard single-slot chassis installation.
  • Compatible with standard ControlLogix removable terminal blocks (RTB).

Applications

This module is suitable for use in critical automation systems requiring reliable DC load switching, such as:

  • Petrochemical refining and processing.
  • Thermal and renewable power generation plants.
  • Mining and material handling operations.
  • Wastewater treatment and municipal infrastructure.

Technical Specifications

Model 1756-OB16S
Outputs 16 Points (Electronically Fused)
Channel Configuration 2 Groups of 8
Voltage Range 10 to 31.2 VDC
Max Current per Point 1 Amp @ 60 deg C
Max Current per Module 8 Amps @ 60 deg C
Backplane Current (5.1V) 250 mA
Backplane Current (24V) 2 mA
Power Dissipation 4.1 Watts @ 60 deg C
Operating Temperature 0 to 60 deg C
Storage Temperature -40 to 85 deg C
Humidity 5 to 95 percent (non-condensing)

Installation Guidelines

  • Ensure the ControlLogix chassis is powered down before inserting or removing the module to prevent electrical arcing or system faults.
  • Handle the module using ESD-safe practices to prevent damage to sensitive internal components.
  • Ensure the module is fully seated in the chassis slot and the locking latch is engaged.
  • Use appropriate shielded cabling for field wiring to minimize EMI interference in high-noise industrial environments.
  • Verify that the removable terminal block (RTB) is correctly wired and securely attached to the module front.
  • Maintain adequate ventilation within the cabinet to ensure the module operates within its specified temperature range.

FAQ

What is the primary function of the 1756-OB16S?

The 1756-OB16S is a digital sourcing output module used to drive DC field loads from a ControlLogix controller, featuring integrated electronic fusing for enhanced circuit protection.

Does this module require a specific terminal block?

Yes, this module requires a compatible ControlLogix removable terminal block (RTB) for field wiring connections. Ensure the RTB is properly keyed to the module.

Can this module be used in a standard ControlLogix chassis?

Yes, it is designed for standard 1756 chassis and occupies one single slot.