The Allen-Bradley 1771-LI Loop Controller Interface Module is engineered to facilitate seamless communication between programmable logic controllers (PLCs) and loop controllers within industrial automation systems.
Key Features
- RS-485 Communication: Utilizes an RS-485 serial link to connect a PLC with up to 15 loop controllers, enabling efficient data exchange over distances up to 4000 feet.
- Backplane Integration: Occupies a single slot in the 1771 I/O chassis, drawing 1.3 Amperes at 5 Volts DC from the backplane, ensuring streamlined integration without excessive power consumption.
- Communication Protocol: Operates in half-duplex mode at a baud rate of 4800, facilitating reliable and timely data transmission.
- Loop Update Time: Achieves a loop update time of approximately 2 seconds when managing all 15 loops, ensuring responsive control in dynamic environments.
- Environmental Resilience: Designed to function within a temperature range of 0 to 60°C (32 to 140°F) and humidity levels of 5-95% non-condensing, making it suitable for various industrial settings.
Applications
The 1771-LI module is ideal for industries requiring precise loop control, such as chemical processing, manufacturing, and utilities. Its robust design and efficient communication capabilities make it a valuable component in complex automation systems.
Installation and Compatibility
This module is compatible with Allen-Bradley’s PLC-5 series and is intended for use with 1771-LC loop controllers. It employs the 1771-WH wiring arm, facilitating straightforward installation and maintenance.
By integrating the 1771-LI Loop Controller Interface Module, industries can enhance their automation processes, achieving greater control accuracy and system reliability.
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