FDU Variable Frequency Drive

The FDU Variable Frequency Drive offers reliable, cost-effective, and user-friendly operation of Pumps, Fans, Compressors, and Blowers.

Full control of flow and pressure ensures optimized operation with reduced energy consumption and less downtime. The FDU also includes unique protection for the driven equipment.

Many of today's 'budget' VFDs are supplied in plastic enclosures that are subsequently required to be installed inside another NEMA rated panel. The FDU on the other hand, is supplied in a standard NEMA 12 enclosure, thereby reducing installation costs.

Key Features

• 3 - 1,500 Amps
• NEMA enclosure
• Unique Shaft Power Load Curve Monitoring and Protection
• Pump Control for up to 7 Pumps
• Automatic Pump Rinsing
• Sleep function
• Process language feature i.e. display GPM
• Copy function via detachable display unit
• Smaller footprint than competing VFDs

Protection from Damage and Downtime

Soft starts and stops protect your equipment. Reduced start currents result in smaller fuses, cables, and energy bills. Controlled stops eliminate the risk or water hammer and other costly damage.

A built-in shaft power monitor and a unique Load Curve Protection function protect your process by immediately detecting any situation that could cause inefficiency or damage. Early warning and safety stops allow preventative action.

Energy Savings and Optimized Operation

FDU regulates flow and pressure by continuously adapting motor speed. No energy wasted and no unnecessary equipment wear. A sleep function further reduces energy consumption by pausing the motor when it does not need to run. An automatic pump rinsing function also increases efficiency.

Multiple pump or compressor control is a reliable and cost-efficient method of keeping a constant flow or pressure despite varying demands. FDU controls up to seven pumps.

User-friendly and Reliable Operation

Operation parameters can be set in your own process unit - m3/min, bar, Pascal, etc. - making monitoring easier and more reliable. The removable control panel has a copy function for transferring setting to other FDU units. You can switch between local and remote control by the push of a key on the control panel. The virtual connection of logical functions, comparators, and timers, means no cables or external I/Os are required.

Cost-efficient and Flexible Installation

The compact standalone 2.5 - 250A units are IP54 (NEMA 12) classified. The robust all metal construction can be installed close to the application, which saves the cost of cabinets and long motor cables.

Simplified Maintenance

Should a process problem occur, a full status report will be generated. You can quickly identify the cause and take corrective measures. Maintenance is simplified thanks to a minimum of easy accessible mechanical parts and foldout power modules.