1747-L551 Allen Bradley Rockwell SLC 500 SLC 5/05 Controller

Product parameters

Model: 1747-L551

Type: SLC 5/05 Modular processor

User memory: 16K words (12K words program memory, 4K words data memory)

Maximum I/O capacity: 4096 input points + 4096 output points

Analog I/O: up to 480 points

Communication port: 1 RS-232 port (supporting DF1 full-duplex/half-duplex, DH-485, ASCII, Modbus RTU)

1 EtherNet port (10Base-T, supporting EtherNet/IP, up to 10 Mbps)

Backplane current: 1A at 5V DC, 0 mA at 24V DC

Program scanning time: 0.9 milliseconds per K characters

I/O scan time: 0.225 milliseconds

Bit execution time: 0.37 microseconds

Maximum rack count: 3 local I/O racks

Maximum number of slots: 30 local I/O slots

Memory backup: Flash EPROM, 16KB RAM with battery support (1747-BA battery)

Operating temperature: 0°C to +60°C

Storage temperature: -40°C to +85°C

Relative humidity: 5-95% (no condensation)

Operating impact: 30G

Vibration: 2.5G (57-2000 Hz), 0.015 inch peak-to-peak (5-57 Hz)

Certifications: CE, CSA, CUL, KC, UL, RCM, C-TICK (as of June 2025)

UPC: 10662468653074

Programming languages: Ladder Logic, Structured Text

Status indicator lights: Running, CPU failure, Forced I/O, low battery, RS-232, Ethernet

Installation location: Slot 0 of the SLC rack

Function

High-performance processing: Provides 16K word user memory and supports medium-complexity control logic and data processing.

Fast scanning time (0.9 milliseconds per K characters, I/O scanning 0.225 milliseconds), suitable for real-time control applications.

The bit execution time is 0.37 microseconds, optimizing the efficiency of instruction processing.

Communication capability: Built-in RS-232 port supports multiple protocols (DF1, DH-485, ASCII, Modbus RTU). The default configuration is DF1 full-duplex with a baud rate of 19.2K.

The embedded EtherNet port supports the EtherNet/IP protocol, allowing seamless integration with HMI, SCADA systems and other PLCS such as ControlLogix.

Support the expansion of multi-point Ethernet networks via the 1761-NET-ENI adapter.

Flexible configuration: Supports up to 3 local I/O racks and 30 I/O module slots, adapting to various I/O requirements.

Compatible with a variety of discrete, analog and dedicated I/O modules.

Supports distributed I/O topology, suitable for widely distributed control systems.

Programming and Diagnosis: Use RSLogix 500 software for ladder logic and structured text programming, supporting 107 programming instructions (including file processing, sequencers, diagnosis, etc.).

Provide status indicator lights (operation, fault, battery, RS-232, Ethernet) for quick diagnosis.

Support online programming and Flash EPROM firmware upgrade.

Reliability and backup: Battery-supported RAM and Flash EPROM backup to prevent program loss.

The program scan retention time after power failure is 20 milliseconds to 3 seconds (depending on the power load).

Optional ControlNet or PLC-5 backup modules are available to enhance the system's fault tolerance capability.

Modular design: Installed in slot 0 of the SLC 500 rack, powered by the backplane, simplifying system integration.

Application scenarios

Medium and large-scale process control: Applicable to medium and large-scale automation projects such as material handling, packaging equipment, and conveying systems.

HVAC control: Used in building management systems to control heating, ventilation and air conditioning equipment.

SCADA system: Integrated with HMI or SCADA systems via Ethernet or RS-232 ports to achieve remote monitoring and data acquisition.

Distributed I/O system: Supports distributed I/O control via Ethernet, suitable for large-scale factory automation.

High-reliability industrial environment: Rapid scanning and reliable communication make it suitable for production lines that require real-time control, such as automotive manufacturing, food processing, and metal processing.

Traditional system maintenance: As a discontinued product, it is suitable for the replacement or upgrade of the existing SLC 500 system, extending the equipment's lifespan.

Advantage Products:

All items are Distributor Ready-stock Genuine Brand-new Supplying, please inform us if the other conditions are needed, Used, Open-box, Refurbished, etc.

Many Available just wait for you, feel free to ask to get better deal!!!

Bou L(Sales Manager)            

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