The Allen Bradley 1756-A4K 1756 ControlLogix chassis is open-type equipment. The weight of the 1756-A4K is around 0.75 kg (1.7 lb). The minimum cabinet of this chassis is 50.8 x 50.8 x 20.3 cm (20 x 20 x 8 inch).
The relative humidity of this chassis is from 5-95% without condensation. The operating vibration of this chassis is 2 g at 10-500 Hz. The operating shock of this chassis is 30 g. The nonoperating shock of this chassis is 30 g. The 1756-A4K has a maximum surrounding air temperature of 60 °C (140 °F). The operating temperature of this chassis is from -25-60 °C (-13-140 °F). The nonoperating temperature of this chassis is from -40-85 °C (-40-185 °F). This chassis has an ESD immunity of 6 kV contact discharges and 8 kV air discharges.
The Allen Bradley 1756-A4K 1756 ControlLogix chassis is designed for the horizontal rear panel assembly. The mounting tabs required by this chassis are 2 top and 2 bottom. Make sure you meet the minimum spacing distance requirements specified. The chassis and excessive power supply are intended to be installed only horizontally. Do not mount it vertically. The 1756-CPR2 cable has a 12.7 cm (5-inch) bend radius. The chassis should have a minimum distance of 12.7 cm (5-inch) on the left side to direct and conn the ct 1756-CPR2 cable. The excessive power supply must have a minimum distance of 12.7 cm (5 inches) below supply to direct and connect the 1756-CPR2 cable.
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TCI Supply is not an authorized Allen Bradley Distributor
| Manufacturer | Rockwell Automation |
| Brand | Allen Bradley |
| Part Number/Catalog No. | 1756-A4 |
| Series | ControlLogix |
| Module Type | Chassis |
| Slots | 4 |
| Power Dissipation (Max) | 4 Watts |
| Mounting | Horizontal |
| Dimensions | 20 x 20 x 8 inches |
| Weight | 1.7 pounds (0.75 kilograms) |
| Enclosure | Open |
| Backplane Current (5 Volts DC) | 10 amps |
| Backplane Current (24 Volts DC) | 2.8 Amps |
| Coating | Conformal Coat |