Introduction

Preventive Maintenance of Servo Drive/VFD

Deepali Pravin Mahajan shares a few tips to get the best service from variable frequency drives (VFDs).

Deepali Pravin Mahajan
  • Client

    Baiza Automation

  • Services

    Repair and maintenance of servo drives

  • Technologies

    Electrical maintenance

  • Dates

    05/12/2017

Description

Variable Frequency Drives (VFDs) can extend the life of your motors, but how can you extend the life of your VFD? The VFD specified by the most qualified expert is only as useful as its operational reliability. This guide reviews the basics of care for variable frequency drives to ensure long-term productivity and cost-effectiveness.

Spring Cleaning of VFD

This is an obvious and straightforward way to maintain your VFD, but also the easiest to ignore. Even if you have ensured the correct specified enclosure ratings to protect the equipment, vents can invite dust and other airborne particles. Not only can dust clog the fans and heat sinks, it can also combine with moisture to trap dampness in the enclosure and create corrosive grime.

To get rid of dust and dirt before it eats into the controls, use a vacuum – NOT compressed air! Using compressed air can grind particles deeper into the crevices of your VFD, exacerbating the risk of degradation. At this stage, check for signs of condensation or moisture that may indicate a malfunctioning panel or complications with the VFD’s location.

Check Components and Take Measurements

While inspecting your VFD, check the connections for looseness or signs of distress. Over tightened screws or a high vibration environment can compromise or loosen wires.

Fans can also be obstructed by foreign objects, dust, or grime, which can cause serious issues like overheating. Regularly replacing or washing enclosure filters can help prevent dust and grime build-up and component failure.

Finally, measure your VFD’s operating voltage once the enclosure and components are clean and the connections are secure. DC bus capacitors may cause erratic DC bus measurements if the capacitor has been damaged or degraded. Fluctuating AC voltage on the DC bus may also indicate capacitor failure.

As with any components of a VFD, routine preventative maintenance can prevent corrosion, degradation, or part failures.

Choosing an Electrical Control Partner

VFDs are an excellent tool for controlling the speed and torque of drives for many drive applications. If you are seeking an electrical control partner for drive solutions, Baiza Automation can modernise your equipment and system for cutting edge efficiency. With a broad portfolio of Automation Solutions, the Baiza team can find innovative answers for your toughest automation questions.

Baiza Automation, specialised in motor controls and drives, is a source for industrial AC/DC drives and all electronics card repair. The company provides expert repair on a huge range of industrial controls. In addition to in-house repairs, it also provides reliable field service for CNC machine breakdown with expertise to repair many product lines.

Deepali Pravin Mahajan founded Baiza Automation from home in January 2009. The company now serves industrial customers from all over India. A headstrong person persistent in pursuit of the goals set, she has a knack and yearning to doing something different, which she counts as her biggest strength along with the willingness to take risks in situations where others do not.

 

Author

Deepali Pravin Mahajan

Deepali Pravin Mahajan founded Baiza Automation from home in January 2009. The company now serves industrial customers from all over India. A headstrong person persistent in pursuit of the goals set, she has a knack and yearning to doing something different, which she counts as her biggest strength along with the willingness to take risks in situations where others do not.

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