Allen-Bradley 1785-L26B PLC-5 Processor | 16K Memory

Allen-Bradley 1785-L26B PLC-5 Series Standard Processor

Core Technical Specifications

• Brand: Allen-Bradley
• Model: 1785-L26B
• Processor Type: PLC-5/26 Standard
• Memory: 16 Kilowords of Battery-Backed SRAM
• Max I/O Capacity: 512 points in any mix or 512 IN/512 OUT complementary
• Max Analog I/O: 512 points
• I/O Scan Time: 3-10 ms (varies by baud rate)
• Battery Backup: Yes
• Protected Memory: Yes
• EEPROM Backup Option: Supported with 1785-ME modules

Communication & Networking

• Serial Port: 1 RS-232-C/422-A/423-A port
• Network Ports: DH+ (Data Highway Plus) & Remote I/O (Channel 1B)
• Max I/O Chassis: 13 total (12 Universal Remote)
• Local I/O Racks: Up to 4 (0-3)
• Compatible I/O: 1771, 1794, 1746, and 1791 series modules
• Addressing Modes: 1-slot, 2-slot, and half-slot configurations

Physical & Environmental Specifications

• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Operating Humidity: 5% to 95% non-condensing
• Vibration Rating: 1G @ 10-500 Hz
• Shock Rating: 30G operational
• Electrical Isolation: 500V between ports, 1000V to relay cartridge
• Backplane Current: 2.6A @ 5V DC maximum
• Weight: 1.42 kg (3 lbs) approximately

Installation & Configuration Guide

• Install the 1785-L26B processor in the left-most chassis slot
• Use the 1785-RC relay cartridge for all external device connections
• Configure I/O addressing based on your module types and density
• Ensure proper backplane power supply capacity for your system
• Follow Allen-Bradley guidelines for grounding and noise immunity

Packaging Information

• Unit arrives in protective packaging
• Includes the 1785-L26B processor unit
• User manual and documentation available separately
• Shipping via FedEx, UPS, or DHL within 5 business days

Frequently Asked Questions (FAQ)

• Q: Is this processor new and original?
  A: Yes, we supply only brand new, original Allen-Bradley 1785-L26B processors.
• Q: What is the maximum I/O capacity?
  A: The 1785-L26B supports 512 total I/O points in any combination, or 512 inputs with 512 outputs.
• Q: How is program memory protected during power loss?
  A: It features battery-backed SRAM with optional EEPROM module backup for permanent storage.
• Q: What communication ports are available?
  A: The processor has three key ports: RS-232 serial, DH+ network, and Remote I/O channel.
• Q: How many remote I/O chassis can I connect?
  A: You can connect up to 12 Universal Remote I/O chassis to this controller.

Contact Information:

• Email: sales@nex-auto.com
• Phone/WhatsApp: +86 153 9242 9628

Authorized Partner: NexAuto Technology Limited