Allen Bradley 1756-L84EP ControlLogix Controller

The 1756-L84EP module is a controller module which is designed by Allen Bradley for its ControlLogix 5580 systems. It supports 20 Megabytes of user memory and a total of 128,000 I/O. The maximum numbers of digital and analog I/O supported by the controller are 128,000 and 4000, respectively. An SD card with a 2-gigabyte capacity ships with the controller and it can be used as additional non-volatile memory. At 1.2 Volts DC, the 1756-L84EP draws 5.0 milliamps of current, and at 5.1 Volts DC, the controller draws 1.20 Amps of current. The power dissipation of an operational controller is 6.2 Watts and the thermal dissipation of an operational controller is 21.2 BTU per hour. The controller can be used with standard and redundant power supply modules. The rated isolation on the controller is 50 Volts continuous from the USB to the system backplane and from the Ethernet port to the system backplane.

The Ethernet port to USB port isolation on the 1756-L84EP controller module has been tested at 1000 Volts for 60 seconds. The enclosure of the 1756-L84EP module is open and it weighs approximately 0.394 kilograms. The recommended wire category for the USB port is 3 and the recommended wire category for the Ethernet port is 2. The USB 2.0 port supports 12 Mbps of data transfer speed and it can be used for the programming and configuration of the controller. The 1756-L84EP module can be installed in any slot of the system chassis. The ATEX temperature code rating of the 1756-L84EP module is T4.

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Specification Sheet .pdf