Allen-Bradley 1756-L76 ControlLogix Processor Module

The Allen-Bradley 1756-L76 is a chassis-based module that belongs to Series A and B of Bulletin 1756 ControlLogix product line. This module is an efficient processor with an available user memory of 64MB. This module is also certified by the Low Voltage Electromagnetic Compatibility (EMC), and Restriction of Hazardous Substances (RoHS) Directives; the ATEX Directive is not necessary for this product. The current draw rating for this controller is around 5mA at 1.2 Volts DC, or 800mA at 5.1 Volts DC. Its power dissipation remains at 2.5 Watts while its thermal dissipation stays close to 8.5 BTU per hour. This controller also uses a standard power supply and has an open-type enclosure. The 1756-L76 controller may be installed into any ControlLogix I/O module chassis’ slot, which also allows other controllers to be mounted in the same chassis. To provide communication for the 1756-L76 controller, install the proper communication interface module in the chassis. This controller also features a built-in USB port, although this port is not meant or permanent connection, but for temporary local programming means only. Other features of this product include controller tasks, communication options, controller redundancy, integrated motion, and language programming.

Technical specifications for 1756-L76

ManufacturerRockwell Automation

BrandAllen-Bradley

Part Number/Catalog No.1756-L76

SeriesControlLogix

Module TypeProcessor Module

I-O Memory0.98 MB

User Memory64 MB

Maximum I-O128,000

Maximum Analog I-O4,000

Maximum Digital I-O128,000

Current Draw (1.2 Volts DC)5 milliamps

Current Draw (5.1 Volts)800 milliamps

Power Dissipation2.5 Watts

Thermal Dissipation8.5 BTU per hour

Isolation Voltage30 Volts Continuous