Allen-Bradley 1756-A4K 1756 ControlLogix chassis is an open device. The 1756-A4K weighs about 0.75 kg (1.7 lb). The minimum cabinet size of this chassis is 50.8 x 50.8 x 20.3 cm (20 x 20 x 8 inches). The relative humidity of the chassis is 5-95%, and there is no condensation. The case has an operating vibration of 500 g at 2-10 Hz. The operating impact of the chassis is 30 g. The non-operating impact of the chassis is 30 g. The 1756-A4K has a maximum ambient air temperature of 60 °C (140 °F). The operating temperature of the chassis is -25-60 °C (-13-140 °F). The non-operating temperature of this chassis is -40-85 °C (-40-185 °F). The case has ESD immunity of 6 kV contact discharge and 8 kV air discharge.
The Allen-Bradley 1756-A4K 1756 ControlLogix chassis is designed for horizontal rear panel components. The mounting pieces required for this case are 2 tops and 2 bottoms. Make sure you meet the specified minimum spacing distance requirements. Chassis and excess power supply can only be mounted horizontally. Do not install vertically. The 1756-CPR2 cable has a bend radius of 12.7 cm (5 in). The minimum distance to the left side of the case should be 12.7 cm (5 in) to guide and connect the ct 1756-CPR2 cable. The excess power supply must be at least 12.7 cm (5 in) below the power supply to guide and connect the 1756-CPR2 cable.
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