Product Overview

The Allen-Bradley 1756-L55 ControlLogix controller provides stable processing power for advanced industrial automation. It operates efficiently between 0…60 °C (32…140 °F) and withstands harsh conditions with high vibration and shock resistance. Its open-style enclosure and compact structure allow flexible installation while maintaining strong EMC immunity.

Key Features

• Operates at 0…60 °C and stores safely from -40…85 °C.

• Handles 5–95% non-condensing humidity for diverse environments.

• Supports 1756-CP3 and 1747-CP3 programming cables.

• Provides 30 g operating shock and 50 g non-operating shock resistance.

• Uses a 1756-BA1 lithium battery (0.59 g) for memory retention.

Technical Specifications

Environmental and EMC Ratings

The Allen-Bradley 1756-L55 complies with IEC 60068 for temperature, vibration, and thermal shock, and meets CISPR 11 Group 1 Class A emissions. It resists 6 kV contact and 8 kV air ESD, while its radiated RF immunity supports 10 V/m across 80…2000 MHz.

Applications

The Allen-Bradley 1756-L55 is designed for manufacturing plants, distributed process control, and high-availability automation systems. It offers stable performance, efficient energy use, and seamless integration within ControlLogix platforms.