The Allen-Bradley 1785-L60L, also cataloged as the 1785-L60L Processor Module, operates as a dedicated hardware component for central logic processing and rack-level communication control within Allen-Bradley PLC-5 systems.

Model Identification Architecture

• Product Family: PLC-5
• Product Model: 1785-L60L
• Spare Model: 1785L60L
• Series Name: PLC-5/60L
• Status: Discontinued by Manufacturer 2014

Hardware Specifications

Industrial Controller Bus & Network Characteristics

Configured for high-density automation systems, the controller coordinates backplane bus communication velocity and firmware flash compatibility via a regulated 5V DC power input drawing 3.3A. I/O density scaling manages local and remote rack configurations while maintaining deterministic scan performance across connected industrial networks.

Package Ordering Information

• 1 x 1785-L60L Processor Module
• 1 x Battery backup component
• 1 x Technical compliance documentation sheet

Field Installation & Grounding Protocols

• Chassis Slot Insertion:
  • Align the printed circuit card edges carefully with the designated backplane guide rails inside the PLC-5 chassis.
  • Push the module forward until the top and bottom mechanical locking latches click into place.
• Power & Grounding Execution:
  • Verify that rack power supplies deliver stable 5V DC and can support the 3.3A current load prior to system energization.
  • Connect heavy-gauge copper grounding straps from the chassis ground stud to the main cabinet earth bus.
• Wiring & Thermal Management:
  • Route communication cables securely through dedicated wireways away from high-power AC lines.
  • Ensure adequate vertical clearance above and below the chassis to maintain optimal convection airflow.

Frequently Asked Questions

• Q: What is the backplane current consumption rating for the 1785-L60L processor?

  A: The module draws 3.3A of current from the 5V DC chassis backplane supply during normal operation.

• Q: What operating voltage does this processor require from the chassis?

  A: The unit operates on a standard 5V DC power input provided directly by the rack backplane.

• Q: Is this particular processor model currently active in manufacturing?

  A: No, the module was officially discontinued by the manufacturer in 2014 and is obtained through spare parts channels.

• Q: Can this processor module be inserted or removed while backplane power is active?

  A: No, live hot-swapping is not supported; power must be completely removed from the chassis before handling the hardware.

• Q: What ambient temperature range is specified for safe operation?

  A: The hardware functions reliably within an ambient operating temperature range of 0 deg C to 60 deg C.

• Q: How is the module secured physically within the industrial rack?

  A: Built-in top and bottom mechanical locking levers anchor the assembly firmly into the enclosure backplane slots.

• Q: What is the weight of the processor hardware unit?

  A: The module weighs approximately 1.35 kg excluding outer shipping containers and packing materials.

• Q: Does the processor require an external battery for memory retention?

  A: Yes, an internal or plug-in lithium battery backup component is utilized to preserve RAM data during power loss.