Allen-Bradley 1756-L81EXT ControlLogix-XT Controller

Allen-Bradley 1756-L81EXT ControlLogix-XT Controller: Industrial-Grade Toughness for Extreme Environments

Full technical details: Download 1756-L81EXT Spec Sheet (PDF)

Powerful Control Capabilities

• ⚡ Handles 32 simultaneous tasks with 1000 programs each
• 🌐 Multi-protocol support: EtherNet/IP, DeviceNet, ControlNet, DH+
• 💻 Dual integrated ports: USB + Ethernet
• 📊 Unlimited local I/O event triggers

Technical Specifications

• Model: 1756-L81EXT | Series: ControlLogix-XT
• Memory: 3MB user memory
• Power: 1.2A @5.1V DC | 5mA @1.2V DC
• Heat Management: 21.2 BTU/hour dissipation
• Programming: Ladder logic, structured text, function blocks
• Vibration Resistance: 2.5G @ 10-500Hz
• Shock Tolerance: 40G operational
• Certifications: cULus, ATEX, IECEx

Package & Support

• 📦 Includes: 1756-L81EXT processor unit
• 📚 Quick-start guide
• 🛡️ 12-month performance warranty
• 🚀 Worldwide shipping: FedEx/UPS/DHL
• ⏱️ 24hr dispatch on stock items

Professional FAQs

• Q: What is conformal coating?
  A: Protective layer shielding electronics from corrosion in harsh environments
• Q: Temperature limits?
  A: Operates at -25°C to 70°C standalone; -20°C to 70°C with Flex I/O-XT
• Q: Chassis compatibility?
  A: Requires ControlLogix-XT chassis (upgrade to K-series recommended)
• Q: Programming options?
  A: Supports ladder logic, structured text, function blocks, SFC
• Q: Network redundancy?
  A: Yes, supports redundant EtherNet/IP and ControlNet configurations