The Allen-Bradley 1756-L55M16 is a ControlLogix Logix5555 controller module designed for high-performance industrial automation applications. This processor module features 7.5 MB of integrated memory, providing robust processing capabilities for complex control tasks. The 1756-L55M16 consists of a 1756-L55 base processor unit paired with a 1756-M16 memory board. As part of the ControlLogix platform, it supports a wide range of I/O configurations and high-speed processing, making it suitable for demanding manufacturing and process control environments.
Features
Logix5555 processor architecture for reliable execution of control logic.
Integrated 7.5 MB memory capacity for program storage and data handling.
High-density I/O support, capable of managing up to 128,000 I/O points.
Optimized for fast program scan times of 0.08 milliseconds.
Designed for seamless integration into the ControlLogix backplane.
Technical Specifications
Product Model
1756-L55M16
Processor Type
Logix5555
Memory
7.5 MB
Max I/O Capacity
128,000
Max Analog Inputs
4,000
Max Analog Outputs
2,000
Program Scan Time
0.08 ms
Backplane Current (5V DC)
1.23 A
Vibration Rating
10-500 Hz
Installation Guidelines
Ensure the ControlLogix chassis is powered down before inserting or removing the 1756-L55M16 module to prevent electrical damage.
The module should be seated firmly into the chassis slot and secured using the top and bottom retaining clips.
Maintain proper ventilation in the control cabinet to ensure the module operates within recommended temperature ranges.
Observe standard ESD (Electrostatic Discharge) precautions when handling the module to protect sensitive internal components.
Ensure the backplane power supply is sized correctly to handle the 1.23 A current draw of this processor.
FAQ
Is the 1756-L55M16 still in production?
No, the 1756-L55M16 was officially discontinued by the manufacturer in March 2011. It is typically available through surplus or refurbished channels for maintenance of legacy systems.
What does the 1756-L55M16 consist of?
This unit is a combination of the 1756-L55 base processor module and the 1756-M16 memory expansion board.
