Description

Allen-Bradley 1747-L541 Processor Unit Input/Output Module

The Allen-Bradley 1747-L541 stands out in industrial environments due to its robust feature set tailored for real-world operational demands. Its dual communication channels—DH+ and RS-232—enable versatile connectivity: the DH+ port supports high-speed messaging (up to 230.4 kbps) with other SLC 500, PLC-5, and ControlLogix controllers, while the RS-232 port handles Modbus RTU, ASCII devices (like barcode scanners), and radio modems, eliminating the need for external communication adapters in most setups.

Label	Specification
Model Number	1747-L541
Brand	Allen-Bradley (Rockwell Automation)
Type	SLC 500 5/04 Programmable Controller
User Memory	16K standard (expandable to 64K via 1747-M13 module)
Input Voltage	5V DC (backplane power)
Operating Temp	-10°C to 55°C (14°F to 131°F)
Communication Ports	DH+ (high-speed) and RS-232
Supported Protocols	DF1, DH-485, Modbus RTU, ASCII I/O
Maximum I/O Points	4096 inputs / 4096 outputs
Typical Scan Time	0.9 ms per 1K instructions
Bit Execution Speed	0.37 microseconds (XIC instruction)
Certifications	UL, CSA, CE, Class I Division 2 Hazardous Locations
Backplane Current	5V: 1000mA; 24V: 200mA
Power Loss Hold-Up	20ms to 3 seconds (depending on load)
Chassis Compatibility	Up to 3 chassis (30 total slots)

The plastics industry benefits from the Allen-Bradley 1747-L541’s specialized ERC2 algorithm option, designed for precise control of injection molding and extrusion machinery. By processing temperature, pressure, and flow signals with minimal latency, it reduces material waste and ensures part uniformity. In hazardous environments like chemical storage facilities, its Class I Division 2 certification provides safe operation where flammable vapors may be present. Across all applications, the controller’s backward compatibility with older SLC 500 components allows facilities to modernize incrementally, preserving existing investments while improving automation reliability.

Compatible and Related Models

• 1747-L511: Entry-level SLC 5/01 controller with 2K memory, ideal for small machines requiring basic logic control.
• 1747-L531: SLC 5/03 processor with DH-485 communication, a cost-effective alternative for mid-sized systems without DH+ needs.
• 1747-IB16: 16-point digital input module that pairs with the 1747-L541 to monitor limit switches and proximity sensors.
• 1747-OB16: 16-point digital output module for controlling relays, solenoids, and small motors via the 1747-L541.
• 1747-M13: Flash memory module that expands the 1747-L541’s storage to 64K for larger programs and data logging.
• 1747-AIC: DH-485 to RS-232 adapter, enabling the 1747-L541 to communicate with legacy devices lacking native DH+ support.
• RSLogix 500: Programming software for the 1747-L541, featuring ladder logic editing and online monitoring tools.
• 1746-P1: 120V AC power supply that provides backplane power to the 1747-L541 and connected I/O modules.

 

For more information, please click on the following link:

AB 2711 series 2711-K6C15 touch screen accessories
Rockwell 1762-OW16 Safety Output Module Relay
Triconex 3009 Enhanced Main Processor (UMP) Module
Triconex 3101/Triconex3201  Triple Modular Redundant Main Processor
AB 2711-K6C5 touch screen human-machine interface function module
Allen Bradley 1769-L32C | Processor Analog Input/Output Module