Allen-Bradley 1756-A7XT ControlLogix-XT chassis

The Allen-Bradley 1756-A7XT is a ControlLogix-XT chassis with 7 slots and a part of the Bulletin 1756 ControlLogix Chassis series. Any module can be fitted into any of the seven slots that come with slot guides and a snap-on retention feature for easy and secure fitting. It has been constructed only for horizontal back-panel mounting. It features direct mounting accommodation for any Bulletin 1756 power supply module. It is an essential component in building the modular ControlLogix system. The 1756-A7XT Module is ideal for panel-mounting and requires a cabinet size with minimum dimensions of 20 x 24 x 8 inches. It weighs approximately 2.4 lb. It requires solid or stranded copper wire rated at 194 °F or greater with ratings of 8.3 mm2 (8 AWG) for functional earth ground and 2.1 mm2 (14 AWG) for protective earth ground. The 1756-A7XT Chassis backplane provides high-speed communication between modules while distributing power to each module within the chassis. It is rated for extreme temperature environments and can withstand between -13 and 158 °F operating temperature range, with 5-95% noncondensing relative humidity. It features an advanced conformal coating that boosts survivability in ISA G3 environments.

Technical specifications for 1756-A7XT

ManufacturerRockwell Automation

BrandAllen-Bradley

Part Number/Catalog No.1756-A7XT

SeriesControlLogix

Module TypeChassis

Slots7

Backplane Current (Chassis/Slot Max)1.2 V DC 1.5 A/-, 3.3 V DC 4 A/4 A, 5.1 V DC 15 A/6 A, 24 V DC 2.8 A/2.8 A (Series C; Varies with Revisions)

Isolation VoltageVaries with Installed Power Supply and Modules

Enclosure TypeNone (Open-Style)

Operating Temperature-13-158 F (-25-70 C)