The parameters of Allen - Bradley 1756 - A7 are as follows:
Model: 1756 - A7
Brand: Allen - Bradley
Series: ControlLogix
Type: Chassis
Number of Slots: 7
Mounting Type: Panel mount
Orientation: Horizontal
Backplane Current: 1.5 A @ 1.2 VDC; 4 A/4 A @ 3.3 VDC; 15 A/6 A @ 5.1 VDC; 2.8 A/2.8 A @ 24 VDC
Power Dissipation (Max): 4.5 W
Operating Temperature: Series B is 0 °C to + 60 °C (+ 32 °F to + 140 °F); Series C is - 25 °C to + 60 °C (- 13 °F to + 140 °F)
Storage Temperature: - 40 °C to + 85 °C (- 40 °F to + 185 °F)
Dimensions (H×W×D): 50.8×60.9×20.3 cm (20×24×8 in.)
Weight: Approximately 1.1 kg (2.4 lb)
Enclosure Type: Open
Vibration Specification: 2 g at 10 to 500 Hz