Description
The RELIANCE ELECTRIC LF200520BBR AC DRIVE LIQUIFLO is a premium industrial frequency inverter engineered for precise motor speed control and exceptional energy efficiency. Designed to handle demanding automation tasks, this variable frequency drive (VFD) integrates seamlessly into complex control systems, offering robust reliability and advanced diagnostics.
Technical Specifications & Datasheet
- Model Number: LF200520BBR
- Manufacturer: Reliance Electric / Rockwell Automation
- Product Series: Liquiflo AC Drive Series
- Input Voltage: 380-460V AC, 3-Phase
- Output Frequency Range: 0 to 400 Hz
- Enclosure Rating: IP20 / NEMA 1 standard protection
- Dimensions: 350 mm x 180 mm x 220 mm (H x W x D)
- Weight: 8.5 kg (18.7 lbs)
- Country of Origin: United States

Target Applications
This versatile AC drive is widely deployed across heavy industries requiring strict speed regulation and fluid control. Primary applications include industrial centrifugal pumps, positive displacement pumps, ventilation fans, blowers, conveyor systems, mixing tanks, and automated material handling lines.
Operating Guidelines & Instructions
To ensure safe operation and maximize the lifespan of the drive, mounting must be performed vertically on a flat, non-flammable surface with at least 100 mm of free air space above and below the unit for heat dissipation. Always verify that the input power supply matches the rated voltage on the nameplate before energizing. Control wiring and power cabling must be run in separate conduits to prevent electromagnetic interference. Initial commissioning should be performed using the local keypad to input basic motor nameplate data, including rated current, voltage, and RPM, before switching to remote automation networks.
Frequently Asked Questions
What does the Liquiflo designation signify for this specific drive? The Liquiflo naming indicates that this drive is optimized with specialized firmware and software macros tailored for fluid handling applications, providing precise pressure and flow control loops without requiring external controllers.
How do I resolve an Overcurrent (OC) fault code on startup? An overcurrent fault usually points to a mechanical jam in the connected load, an excessively short acceleration time, or a short circuit in the motor cabling. Inspect the motor insulation and gradually increase the acceleration time parameter in the startup menu.
Can this drive be integrated into modern PLC networks? Yes, the unit features modular communication slots that support integration with standard industrial protocols, allowing it to communicate directly with programmable logic controllers and distributed control systems.

