The Allen-Bradley 1747-L551 is a high-performance processor module designed for industrial automation applications. It belongs to the SLC 500 series and offers advanced control capabilities with a robust set of features.
Key Features
- Program Memory: The 1747-L551 integrates 16 KB of program memory, allowing for complex control logic and algorithms to be implemented.
- I/O Capacity: It can control up to 4096 input and output points, making it suitable for large-scale automation systems.
- Communication: The module includes an Ethernet port for network connectivity, supporting 10/100 Base-T Ethernet channels with SNMP, BOOTP, and extended messaging capabilities. Additionally, it has an RS-232 port for peer-to-peer communication, supporting DF1 full-duplex, DF1 half-duplex master, and DF1 radio modem.
- Online Programming: The 1747-L551 supports online programming, including runtime editing, allowing for flexible and efficient development and debugging of control programs.
- Built-in Clock and Calendar: It features a real-time clock and calendar for time-stamped data recording and scheduling tasks.
- Additional Functionality: The module offers channel-to-channel, remote I/O, and DeviceNet pass-through capabilities, enhancing its versatility in automation systems.
Technical Specifications
- Power Supply: Typically operates on a specified voltage (e.g., 120V or 220V, depending on regional standards).
- Operating Temperature: Ranges from 32°F to 140°F (-0°C to 60°C).
- Storage Temperature: Approximately -40°F to 185°F (-40°C to 85°C).
- Vibration: Operating vibration is 2.5G at 5 to 2000 Hz; non-operating vibration is 5G at 5 to 2000 Hz.
- Isolation: The communication circuits are isolated by approximately 500 V DC, and the backplane and I/O are isolated by 1500 V AC.
- Scan Time: Typically around 0.9 milliseconds per thousand instructions (K).
Indicators and LEDs
The 1747-L551 includes LEDs that indicate various statuses, such as when the module is running, when a CPU fault occurs, when the battery is low, when I/O is forced, and when the Ethernet/RS-232 ports are active.
Applications
Due to its high performance and versatility, the Allen-Bradley 1747-L551 is widely used in various industries, including but not limited to numerical control machinery, metallurgy, oil and gas, paper and printing, textile printing and dyeing, electronics manufacturing, automotive manufacturing, and more.
Certifications and Compliance
The module complies with standards such as UL 508 and CSA C22.2 No. 142, ensuring its safety and reliability in industrial environments.
In summary, the Allen-Bradley 1747-L551 is a powerful and versatile processor module suitable for a wide range of industrial automation applications. Its advanced features, including online programming, built-in clock and calendar, and extensive communication options, make it an ideal choice for complex and large-scale automation systems.
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