Allen-Bradley 1756-A7 Chassis

Series#: AllenBradley

Product Details

1756-A7 ALLEN-BRADLEY ControlLogix 7-Slot Chassis – Engineered for high-density I/O and processor integration in mission-critical industrial automation systems.
Supports up to 7 modules per chassis, optimized for ControlLogix 1756-series controllers, communication modules, and I/O modules.
Robust backplane design ensures reliable data transfer and power distribution across all slots, even in harsh environments.
Compatible with 1756-PA72, 1756-PB72, and 1756-PA75 power supplies for flexible system configuration.
Compact form factor (7-slot) ideal for space-constrained panels while maintaining full ControlLogix scalability.
Rugged metal construction with UL, CE, and CSA certifications – built for 24/7 industrial uptime.
100% Genuine and New, rigorously inspected before international dispatch.

Specification

The 1756-A7 ALLEN-BRADLEY ControlLogix 7-Slot Chassis is a foundational component for building scalable, high-performance automation systems. Designed to house up to seven 1756-series modules, this chassis provides a robust backplane with redundant power distribution and high-speed data communication. Whether deployed in discrete manufacturing, process control, or hybrid applications, the 1756-A7 ensures seamless integration with ControlLogix processors, Ethernet/IP, and legacy networks. Its compact 7-slot footprint reduces cabinet space while supporting critical redundancy and expansion options. Each slot is keyed for proper module alignment, and the chassis features a built-in power supply interface for 1756-PA72 (AC) or 1756-PB72 (DC) power supplies. This model is fully compatible with all standard ControlLogix modules, including analog/digital I/O, motion control, and safety modules. Factory-tested for electromagnetic compatibility (EMC) and thermal performance, the 1756-A7 delivers reliable operation in ambient temperatures from 0°C to 60°C. With UL 508, CSA C22.2 No. 142, and CE marking, it meets global industrial safety standards. The chassis includes DIN-rail mounting brackets and panel-mount adapter hardware, simplifying installation in existing cabinets. For system expansion, multiple 1756-A7 chassis can be linked via ControlLogix XM bus extenders or ControlNet bridges.

Parameter	Specification
Product Type	ControlLogix Chassis
Model Number	1756-A7
Number of Slots	7
Backplane Type	Passive, high-speed serial
Power Supply Compatibility	1756-PA72 (AC), 1756-PB72 (DC), 1756-PA75 (AC)
Module Compatibility	All 1756-series controllers, I/O, communication, motion, safety modules
Operating Temperature	0°C to 60°C (32°F to 140°F)
Storage Temperature	-40°C to 85°C (-40°F to 185°F)
Relative Humidity	5% to 95% non-condensing
Vibration Resistance	2.5 g at 5-500 Hz (operating)
Shock Resistance	30 g (operating), 50 g (non-operating)
Mounting Options	DIN rail (EN 50022) or panel mount
Dimensions (H x W x D)	5.5 in x 10.5 in x 5.5 in (140 mm x 267 mm x 140 mm)
Weight	2.2 lb (1.0 kg)
Certifications	UL 508, CSA C22.2 No. 142, CE, ATEX (Zone 2), IECEx
Protection Rating	IP20 (NEMA 1)
Wiring	Removable terminal blocks for power supply (not included)
Bus Current Rating	10 A at 5 VDC, 5 A at 24 VDC (shared across slots)
Redundancy Support	Yes (with redundant power supplies and controllers)
Warranty	2 years (manufacturer standard)