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The Allen-Bradley 1756-A10XT is a 10-slot backplane chassis engineered specifically for the ControlLogix XT (Extreme Environment) series. This ruggedized hardware provides a reliable mounting and communication foundation for processors, I/O modules, and communication bridges in industrial applications subjected to harsh conditions, including corrosive atmospheres, extreme thermal cycling, and high levels of vibration.

Features

  • Ruggedized Design: Built to maintain electrical and structural integrity in environments where standard control hardware may experience premature failure.
  • Extreme Environment (XT) Rating: Optimized for challenging industrial settings requiring high environmental resilience.
  • ESD Resilience: Enhanced protection against electrostatic discharge, rated for 6 kV contact and 8 kV air discharge.
  • Humidity Tolerance: Operates reliably in non-condensing humidity levels between 5% and 95%.
  • Standard Compatibility: Fully compatible with the standard Bulletin 1756 ControlLogix module ecosystem.

Applications

This chassis is ideal for deployment in critical infrastructure, chemical processing plants, and remote industrial sites where ambient conditions are severe. It is suitable for use in installations requiring Zone 2 hazardous area certification.

Technical Specifications

Brand Allen-Bradley
Series ControlLogix XT
Slots 10
Mounting Horizontal (Rear panel)
Cooling Convection (Vertical)
ESD Protection 6 kV contact / 8 kV air
Relative Humidity 5% to 95% (non-condensing)
Enclosure Type Open-type

Installation Guidelines

  • Ensure the chassis is mounted on a flat, rigid surface to minimize mechanical stress.
  • Maintain proper vertical clearance to allow for effective convection cooling through the chassis backplane.
  • When handling modules, observe standard ESD precautions to protect internal circuitry.
  • Verify that all module connections are fully seated in the backplane connectors before applying power.
  • Power down the system before inserting or removing any ControlLogix modules from the chassis slots.
  • Ensure the environment remains within the specified temperature and humidity ranges to prevent condensation buildup within the chassis.

FAQ

Is the 1756-A10XT compatible with standard ControlLogix modules?

Yes, the 1756-A10XT is designed to house standard 1756 ControlLogix modules while providing the added environmental protection required for XT-series applications.

What does the XT designation mean for this chassis?

The XT designation indicates that the unit is built to withstand harsher environmental factors than standard chassis, such as corrosive gases and wider temperature fluctuations, making it suitable for demanding industrial deployments.

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