1747-L552B/C

Overview of Allen Bradley 1747-L552B-C

The Allen Bradley 1747-L552B-C is a high-performance SLC 500 series programmable logic controller (PLC) processor, designed to meet demanding industrial automation needs. It offers 32 KB of user memory, accommodating up to 28K words for program data and 4K words for user data. This model supports an absolute maximum of 4096 inputs and 4096 outputs, enabling control of complex processes or multiple smaller systems within a single unit. Featuring advanced Ethernet communication with 100 Mbps speed and auto-negotiation, it ensures fast and reliable network connectivity. Additional built-in RS-232 and DH-485 communication ports expand its integration capabilities. Its fast processing speeds reduce program scan and I/O scan times, improving automation efficiency. The 1747-L552B-C’s robust design allows operation in temperatures from 0 to 60 °C and up to 95% non-condensing humidity, making it suitable for harsh industrial environments.

Key Features of Allen Bradley 1747-L552B-C

• 32 KB user memory with 28K words for program and 4K words user data
• Supports up to 4096 inputs and 4096 outputs for extensive I/O capacity
• 100 Mbps Ethernet communication port with auto-negotiation for fast network access
• Two communication ports: Ethernet and RS-232, configurable for DH-485
• Typical program scan time of 0.9 ms per Kword, and I/O scan time of 0.225 ms for efficient processing
• Battery-backed RAM to preserve user data and program during power loss
• Supports up to three chassis with a maximum of 30 slots for flexible system expansion
• Operating temperature range from 0 to 60°C and relative humidity tolerance up to 95% non-condensing
• Vibration and shock resistance suitable for industrial settings
• Supports basic and advanced mathematical functions, real-time clock, and various programming instructions

Technical Specs of 1747-L552B-C

Specification	Details
User Memory	32K words total (28K program, 4K data)
Maximum I/O	4096 inputs + 4096 outputs
Local Analog I/O	Maximum 480 points
Communication Ports	Ethernet 100 Mbps, RS-232 (DH-485 configurable)
Program Scan Time	0.9 ms/Kword (typical)
I/O Scan Time	0.225 ms (typical)
Operating Temperature	0 to 60 °C
Operating Humidity	5 to 95% non-condensing
Dimensions (HxWxD)	145 x 35 x 142 mm
Power Supply	1A @ 5 V DC max

Applications / Use Case

The Allen Bradley 1747-L552B-C is suited for a wide range of industrial automation applications requiring reliable and flexible control. Its extensive I/O capacity and fast processing speeds make it ideal for complex manufacturing processes, packaging lines, and automated assembly systems. Integration with Ethernet allows real-time data communication and remote monitoring, vital for modern industrial environments and SCADA systems. The processor's robust build supports use in harsh conditions, including factories with vibration and temperature fluctuations. It is also employed in process control, machine control, and distributed control systems where seamless scalability and consistent performance are critical. System integrators and engineers benefit from its compatibility with modular SLC 500 hardware, facilitating incremental system expansion based on evolving automation needs.

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