Manufacturer Rockwell Automation
Brand Allen Bradley
Part number/Catalog number 1756 -L72EROM year
Series ControlLogix
Module Type Armor Control Logix controller
The Allen-Bradley 1756-L72EROM is an Armor ControlLogix controller. It can handle up to 32 tasks, each with 1,000 programs. It has a 4 MB memory available for data and logic, a 0.98 MB I/O memory, and a 1 GB SD card for backup memory. The controller has a maximum digital and total I/ OS of 128,000, respectively, and a maximum analog I/O of 4000.
The controller is equipped with one Type B 2.0 full speed USB port and four Ethernet M12 Class 5E ports. The controller supports up to 256 EtherNet/IP connections and 128 TCP network connections per network module. Note that there is no serial port communication available for this controller. The 1756-L72EROM controller also supports up to 500 controller connections, but does not support controller redundancy. Programming languages available for the controller include structured text, relay ladder diagrams, sequential function diagrams (SFC), and function blocks. The 1756-L72EROM comes with a UL Type 4/4x housing that measures 9.4 x 11.5 x 6.5 inches and weighs 15.50 pounds or 7.04 kilograms.
The input voltage range is 18-32V DC and the nominal input voltage is 24V DC. The non-replaceable fuse is soldered in place, which prevents fire hazards caused by short circuits. The 1756-L72EROM has a continuous isolation voltage of 30 V and basic insulation types from non-redundant Ethernet channel to non-redundant Ethernet channel, Ethernet channel to power supply, and power supply to cabinet. There is no isolation between redundant Ethernet channels. The isolation of the controller has been type-tested for 60 seconds at 707V DC. The 1756-L72EROM has a non-condensing relative humidity of 5-95%. The operating temperature range is 0-60 E? C and the non-operating temperature range is -40-85 E? C. The controller also has 500 g operating vibration, 30 g operating shock and 50 g non-operating shock at 2-10 Hz.
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