Servo Repair Service
BASIC Industrial servo / VFDs Repair Ideas Having trouble with your VFD / SERVO If you don’t think any of the above maintenance rules were the problem, then here are few basic troubleshooting tips for VFDs & Servos Monitor/ Check heat sink temperatures regularly, weekly is best but monthly will work. A Drive is essentially a computer and extreme temperatures are always bad news for computers. Take voltage measurements with the DRIVE in operation. Your manufacturer will have measurement guidelines for this. Problems with the voltage can indicate many things including bad capacitors, bad diode bridge, and transistor leakage all of which need immediate repairs Check the fans. Look and listen for signs of bearing failure or foreign objects. Inspect the components. Look for bulging or leaking DC bus capacitors. These could be signs of aging or overstressed components and need to be replaced. Check the date codes on the capacitors