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Allen-Bradley 1785-L20B PLC-5/20 Controller, 16K Word SRAM

Allen-Bradley 1785-L20B PLC-5/20 Controller, 16K Word SRAM

Brand	Allen-Bradley
Module Number	1785-L20B
Unit Price	$650
Country Of Origin	USA
Weight	0.6KG
Certificate	C/O from the Chamber of Commerce C/Q from the Manufacturer
Warranty	12 Months
Inventory Qty	10

Allen Bradley 1785-L20B is a mid-range PLC-5™ programmable logic controller designed for industrial automation,Widely used in discrete manufacturing, wastewater treatment, and power distribution.

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Description

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Description

Allen-Bradley 1785-L20B Technical specifications

Parameter Category	Specific Indicators
Processor	133 MHz Intel® Celeron® (32-bit)
User Memory	64 MB SDRAM (user-accessible); 8 MB non-volatile (Flash)
I/O Capacity	Up to 2000 digital I/O points; 512 analog I/O points (via expansion modules)
Communication Interfaces	- 1 × ControlNet™ port (10 Mbps) - 1 × DF1 serial port (RS-232/RS-485) - 1 × DH+ port (for legacy networks) - Optional: EtherNet/IP™, Modbus®, Profibus DP adapters
Scan Time	Typical: 5–10 ms (varies with program complexity and I/O load)
Power Supply	24V DC (18–32V DC input; 30W max power consumption)
Operating Temperature	-20°C to +60°C (non-condensing)
Storage Temperature	-40°C to +85°C
Mechanical Dimensions	127 mm (height) × 114.3 mm (width) × 127 mm (depth)
Certifications	UL 508, CE, cULus, RoHS, FM Class I Division 2, ATEX Zone 2 (with optional modules)

Payment&Security

Beneficiary's Bank: CITIBANK N.A.
Beneficiary address:Champion Tower,Three Garden Road,Central,Hong Kong
Beneficiary: Vogi International Trading Co., Limited
Account No.: 395714900
Bank Code: 006 Branch Code: 391
Swift Code:CITIHKHX (CITIHKHXXXX * If 11 characters are required)
Payment Term：T/T

DataSheet Download

Allen-Bradley 1785-L20B Key features

Depend on Performance: 133 MHz Intel® Celeron® processor, capable of handling up to 2000 I/O points with fast scan rates.

Modular Flexibility: Works with PLC-5 I/O modules and communication adapters.

Multi-Protocol Communication: DF1, DH+, and ControlNet built in, optional modules include EtherNet/IP™, Modbus®, and Profibus DP.

Typical cooperation cases

Automobile production: a GM transmission plant applies 1785-L20B to control the gear assembly robots and to align both the conveyor belts and the part sensors resulting in 20% less downtime thru better logic control.

Water Treatment: Thames Water in the UK uses 1785-L20B to monitor and control pumps, valves, and level sensors at 30+ remote I/O nodes, enhancing efficiency up to 15% with automation of process optimization.

Food & Beverage: PepsiCo Snack Food Plant (Mexico) to control line conveyor systems, mixing tanks and packaging machines while maintaining consistent quality of products via real-time I/O monitoring with 1785-L20B.