1756-A7

Overview

The 1756-A7 is a 7-slot ControlLogix chassis from Allen-Bradley, designed for modular configuration of controllers, communication modules, and I/O interfaces in industrial automation systems.

Chassis Specifications

• Capacity: 7 slots

• Cooling method: Convection

• Mounting location: Panel

Backplane Current Ratings

• @ 1.2V DC (chassis/slot): 1.5 A / –

• @ 3.3V DC (chassis/slot): 4 A / 4 A

• @ 5.1V DC (chassis/slot): 15 A / 6 A

• @ 24V DC (chassis/slot): 2.8 A / 2.8 A

Power & Grounding

• Power dissipation (max): 4.5 W

• Isolation voltage: Determined by installed power supply and modules

• Wire size – functional earth: 8.3 mm² (8 AWG), copper, 90 °C min

• Wire size – protective earth: 2.1 mm² (14 AWG), copper, 90 °C min

Physical Dimensions

• Cabinet size (H × W × D, min): 50.8 × 61.0 × 20.3 cm (20 × 24 × 8 in.)

• Weight: 1.10 kg (2.4 lb)

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