The Allen-Bradley 1756-A17K is an open chassis. This case should be installed in an appropriate housing designed for certain environmental conditions. The 1756-A17K is designed for horizontal rear panel components. If the chassis mounting plate is not laid flat before securing the screws, use additional washers as spacers to prevent the chassis from being folded by the screws. A warped case can damage the backplane and cause intermittent operation. Allen-Bradley 1756-A17K includes a ground bus. The ground bus is a common connection between each case in the case and the housing itself. For more information on how to install a central bus on this device, see Industrial Automation Filling and Control Guide, 1770-4.1.
The Allen-Bradley 1756-A17K weighs about 2.2 kg (4.8 lb). The minimum cabinet size of this chassis is 76.2 x 91.4 x 20.3 cm (30 x 36 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 maximum air temperature around 1756-A13K is 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.
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