Allen Bradley 1794-L34 FLEX I/O FlexLogix Controller with 512KB User Memory

Product Description

The Allen Bradley 1794-L34 is a FlexLogix controller designed for distributed automation systems within the FLEX I/O 1794 series. It provides 512 KB of user memory and integrates seamlessly with FLEX I/O modules, offering flexible mounting options and robust electrical specifications. With efficient power management, strong isolation, and compatibility with extended local I/O cables, the 1794-L34 delivers reliable control performance in industrial environments.

Technical Specifications

• Manufacturer Allen Bradley (Rockwell Automation)

• Product Line FLEX I/O 1794 Series

• Product Type FlexLogix Controller

• Part Number 1794-L34

• Weight 1.69 lbs (0.77 kg)

• User Memory 512 KB

• Nominal Power Supply Voltage 24 V DC

• Power Supply Voltage Range 19.2–31.2 V DC

• Input Current 0.85 A @ 24 V DC max

• Power Dissipation

• 25.5 W max @ 19.2 V DC

• 20.4 W max @ 24 V DC

• Thermal Dissipation 87 BTU/hr @ 19.2 V DC

• Backplane Current Load 653 mA max @ 5.1 V DC

• Flexbus Current Output 653 mA max @ 5.1 V DC

• Isolation Voltage 30 V DC continuous (tested to withstand 850 V DC for 60 seconds)

• Extended Local I/O Cable Options

• 1794-CE1 (1 ft)

• 1794-CE3 (3 ft)

• Mounting Options DIN rail or panel mount

• DIN Rail Type Steel, 35 × 7.55 mm (A-B part number 199-DR1; 46277-3; EN 50022)

• Power Connector Torque 0.6–0.8 N·m

• Enclosure Type Open-style

Application Scenarios

• Distributed automation systems requiring compact controllers

• Machine-level control with FLEX I/O integration

• Industrial environments needing modular and scalable control solutions

FAQ

Q: How much user memory does the 1794-L34 provide?  A: 512 KB of user memory.

Q: What mounting options are available?  A: DIN rail or panel mounting.

Q: Which cables are supported for extended local I/O?  A: 1794-CE1 (1 ft) and 1794-CE3 (3 ft).

Comparable Models

• 1794-L34: FlexLogix controller with 512 KB memory (this model)

• 1794-L33: FlexLogix controller with reduced memory capacity

• 1756-L55: ControlLogix controller with modular expansion