The Allen-Bradley 1756-OB16E is a 16-point DC digital output module designed for the ControlLogix platform. This module provides high-density output control for industrial automation applications, featuring electronic fusing for enhanced protection of connected field devices. It is engineered to interface directly with the ControlLogix backplane, offering reliable performance in demanding environments.
Features
16-point DC output configuration.
Electronically fused outputs to protect against short circuits and overloads.
Electronic keying to prevent incorrect module insertion in the chassis.
Compatible with standard 12-24V DC control systems.
Low power consumption with minimal thermal dissipation.
Applications
This module is widely used in industrial control systems for driving actuators, solenoids, relays, and indicators. It is suitable for applications in manufacturing, process control, and material handling where reliable, protected digital output switching is required.
Technical Specifications
Model
1756-OB16E
Output Type
16-Point DC Electronically Fused
Operating Voltage Range
10-30 VDC
Nominal Output Voltage
24 VDC
Output Current Rating
1.0 A per point at 60 degC
Backplane Current (5.1V)
250 mA
Backplane Current (24V)
2 mA
Thermal Dissipation
13.98 BTU/hr at 60 degC
Output Delay (OFF to ON)
70 us nom / 1 ms max
Output Delay (ON to OFF)
360 us nom / 1 ms max
Installation Guidelines
Ensure the ControlLogix chassis is powered down before inserting or removing the module.
Verify that the module is fully seated in the chassis slot and secured with the top and bottom latches.
Use appropriate shielded cabling for field wiring to minimize electromagnetic interference (EMI).
Ensure proper grounding of the chassis and power supply to maintain signal integrity.
Follow local electrical codes and Allen-Bradley installation manuals for wire sizing and termination practices.
Handle the module using ESD-safe procedures to prevent damage to internal components.
FAQ
What does the 'E' in 1756-OB16E stand for? The 'E' indicates that the module features electronic fusing, which provides built-in protection against short circuits and overcurrent conditions for each output point.
Is this module compatible with all ControlLogix chassis? Yes, the 1756-OB16E is designed for use in any standard ControlLogix I/O chassis.
