Allen Bradley 1756-A7LXT 7 Slot ControlLogix-XT Chassis

The 1756-A7LXT conformally-coated Allen-Bradley ControlLogix-XT chassis has 7 slots in it and it is specifically designed for maximum durability in hazardous environments such as the ISA G3 rated hazardous environments.

The maximum heat dissipated by the chassis is 4.1 Watts. The “per slot” backplane current levels are 1.5 Amps at 1.2 Volts DC, 4 Amps at 3.3 Volts DC, 10 Amps or 6 Amps at 5.1 Volts DC, and 2 Amps at 24 Volts DC. The isolation voltage is determined by the installed power supply modules. The 1756-A7LXT chassis is designed for horizontal mounting only. The dimensions of the 1756-A7LXT chassis are 50.8 x 60.9 x 20.3 centimeters and the approximate weight is 1.1 kilograms. The North American temperature code for the chassis is T5.

For the protective earth ground, 14 AWG copper wire (solid or stranded) which is rated for 90 degrees Celsius or a greater temperature is recommended. The enclosure of the 1756-A7LXT chassis is open. The operating temperature for the 1756-A7LXT chassis is from -13 to 140 degrees Fahrenheit and the storage temperature range is -40 to 185 degrees Fahrenheit. The temperature of the air surrounding the 1756-A7LXT chassis should not exceed 140 degrees Fahrenheit. The ESD immunity is 6 kilovolts contact discharges and 8 kilovolts air discharges. The 1756-A7LXT chassis is certified by the FM, CE, RCM, KC, and EAC standards. When used with a standard power supply in an enclosure, the following spacing recommendation should be followed: 15.3 centimeters between the top edge of chassis and the enclosure, 15.3 centimeters of vertical spacing between two horizontally mounted chassis, 5.1 centimeters between the bottom edge of the chassis and the enclosure, and 7.7 centimeters of horizontal spacing between two adjacent chassis.

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Technical Data .pdf