Custom Variable Frequency Drive Example for 3-phase 1/3 HP Data Center Cooling Fans
This custom variable frequency drive design goal was to allow multiple VFDs to operate together in a large data center cooling application. Power factor correction prevents feedback on the AC line. An RS485 interface on the variable frequency drive controls motor speed and reports status information. Under-voltage protection, over-current protection, and AC line inrush current control guarantees maximum performance of this custom VFD design.
CRI’s electronic design and manufacturing facilities have the capability to provide complete custom variable frequency drive design for AC motors, fans, and pump applications from prototype to production.
Custom Variable Frequency Drive Design Specifications
- Input power: 200-240 VAC, 50/60 Hz, single-phase
- Output power: 230 VAC, 3-phase, 3 Amps
- Power factor correction allows for multiple variable frequency drive units to be on the same AC power line
- Under-Voltage Protection, Over-Current Protection, Line Inrush Current Control
- RS485 and analog (0-10VDC) control interface
- TUV certification
Custom VFD design – Data Center Cooling
SmartFan® Design Group