Overview

The Allen-Bradley 1785-L20B is a programmable logic controller (PLC) from the legacy Allen-Bradley PLC-5 series. This model is commonly used in industrial automation systems for process control, machine control, and other control applications where reliability and flexibility are critical.

Specifications

• Processor Type: 32-bit RISC processor.
• Memory:
  • Program Memory: 64 KB (expandable depending on the system configuration).
  • Data Memory: 32 KB (expandable as needed).
• Operating System: PLC-5 family operating system with RSLogix 5 programming software.
• I/O Capacity:
  • Supports a wide range of digital and analog I/O modules.
  • The number of I/O points is scalable depending on system requirements.
• Communication:
  • DH+ (Data Highway Plus) communication support for networking with other Allen-Bradley PLCs and devices.
  • Optional communication modules for ControlNet, Ethernet, and DeviceNet.
• Input Voltage: Typically operates on 120/240V AC or 24V DC, depending on the configuration.
• Environmental Conditions:
  • Operating Temperature: 0°C to 60°C (32°F to 140°F).
  • Storage Temperature: -40°C to 85°C (-40°F to 185°F).
  • Humidity: 5% to 95% (non-condensing).
• Power Consumption: Approx. 100 watts, depending on the number of modules installed.