CLC-2P (4L) PLC Controlled Electric Lubricating Oil Pump System

The CLC-2P (4L) is a PLC-controlled electric lubricating oil pump designed for centralized lubrication systems in industrial machinery. This unit integrates a 4-liter lubricant reservoir with an electric pump and control interface, providing automated lubrication delivery to multiple points within a machine or production line. The system is suitable for applications requiring precise, repeatable lubrication cycles for bearings, guides, chains, gears, and other moving components.

System Architecture and Control Interface

The CLC-2P lubrication system is designed to interface directly with PLC controllers through discrete I/O or serial communication, allowing integration into existing machine control architectures. The pump operation can be triggered by timer-based cycles, machine cycle counts, temperature sensors, or other process variables monitored by the PLC. When the PLC outputs a start signal, the pump energizes and delivers lubricant to the distribution network. The control voltage is configurable to match the PLC output specifications. An integrated pressure switch provides feedback to the PLC when the system reaches operating pressure, enabling closed-loop monitoring of lubrication delivery.

Reservoir and Pump Specifications

The 4-liter lubricant reservoir capacity supports extended operation between refills, reducing maintenance frequency in continuous production environments. The reservoir is constructed from materials compatible with standard industrial lubricants including mineral oils, synthetic oils, and greases. A fill port with integrated strainer prevents contamination during refilling, while a sight glass or level indicator allows visual confirmation of lubricant level. An optional low-level switch can be connected to the PLC to generate an alert when lubricant supply is running low, triggering a refill warning before the system runs dry.

Delivery Performance and Distribution

The electric pump generates sufficient pressure to deliver lubricant through distribution tubing to multiple lubrication points. Discharge pressure is regulated by an internal relief valve or monitored by the PLC via a pressure transducer. The flow rate is matched to the requirements of typical centralized lubrication systems used in machinery applications. The pump can be configured for either single-line or dual-line distribution depending on the lubrication system architecture. The system supports progressive distributors or injectors for dividing the lubricant flow among individual points with consistent volume per cycle. Output ports are sized to accept standard lubrication tubing fittings.

Installation and System Integration

The CLC-2P unit is designed for panel or frame mounting within the machine enclosure. The compact footprint minimizes interference with other machine components while keeping the lubrication system accessible for maintenance. Power and control connections are made via pre-wired leads or terminal blocks, allowing direct connection to the PLC output modules and the facility power supply. The pump motor operates on standard industrial voltages, with wiring diagrams provided for integration into the machine electrical system. Mounting holes are provided for secure attachment to machine frames or control cabinet backplanes.

Applications in Industrial Machinery

The CLC-2P lubrication pump is used in applications requiring automated, PLC-controlled lubrication of multiple points. Typical machinery includes CNC machine tools requiring controlled lubrication of guideways and ballscrews, presses and stamping equipment, packaging machinery with multiple rotary and linear bearings, conveying systems, printing presses, and metal forming equipment. The PLC interface allows the lubrication cycle to be synchronized with machine operation, delivering lubricant only when the machine is running and adjusting frequency based on production rates.

Maintenance and Operation

Regular maintenance includes checking the lubricant level and refilling the reservoir as needed, inspecting hoses and fittings for leaks, and cleaning the reservoir strainer. The pump can be serviced by removing access panels or the complete pump assembly from the reservoir. The control interface includes status indicators showing pump operation and alarm conditions, facilitating troubleshooting without specialized tools. The system supports typical lubricant types such as ISO VG 32, 46, 68, and 100 hydraulic oils, gear oils, and way lubricants suitable for the application.

Conclusion

The CLC-2P (4L) electric lubricating oil pump provides a PLC-controlled solution for centralized lubrication in industrial machinery. With a 4-liter reservoir, electrical control interface, and pump capable of reaching multiple lubrication points, this system automates lubrication delivery, reducing manual maintenance and improving machine reliability.