Top 6 Reasons for VFD Failure and How to Prevent Them

Are you getting over voltage faults from your VFD? Erratic operation? Hearing strange noises? VFD failure? Chances are you may need to change your use and maintenance routines for your VFD and probably other equipment too.  As a rule, VFDs are reliable as hell. But like most things, they have their critical needs, and sadly, their breaking points.

variable frequency drive (VFD) controls the speed, torque, and direction of an AC motor. It is also referred to as an AC drive or inverter. This sounds pretty basic, but the electronic guts of the operation are actually complicated and need consistent maintenance by qualified operators.

We’ve produced a helpful bullet list of common causes of VFD failures, along with maintenance and repair tips. If there’s ONE takeaway, it’s this – avoid what we call the “Electronic Axis of Evil” like the very costly plague it could become: dirt, heat, and moisture. 

Top Reasons for VFD Failure and Tips to Identify and Prevent Costly Problems:

1) Buildup

Mainly this means “gunk” made up of dust combined with typical plant air which usually contains oil, moisture, and metallic particles. This buildup is probably the number one cause of VFD failure! And it’s not the actual dirt itself. It’s that the dirt/dust buildup attracts moisture and prevents good airflow. This results in excess heat, and the metallic particles can create stray current paths on your circuit boards. A triple play by the bad guys! The result? At a minimum, you will get diminished performance from your drive and at worst, catastrophic failure – bang! 


Simple Tips for Encoder Repair and Troubleshooting

If motion control is important to your production, then your encoder is one of the keys to your success. Encoders are exposed to shock, contaminants/oil, excess vibration, moisture, and high temperatures that regularly put their toughness to the test.

There are a lot of encoders out there in industry, doing their job 24/7. These little workhorses includ incremental aka quadrature encoders which uses a transparent disk with section equally spaced to determine movement; absolute encoders which use a photodetector and LED light source and a disk with concentric circle patterns; linear repairs for linear encoders which  use a transducer or reading-head linked to a scale; magnetic rotary encoders which use hall effect sensors; and commutation encoders which are similar to incremental encoders but have commutation tracks along the outer edge of the disk.

Choosing Which Encoder to Buy

First, start out right! Two basic rules apply to buying encoders:


Capacitive vs Resistive Touchscreens

In recent years, touchscreen technology has been evolving rapidly, leading to new and improved technologies that provide consumers and businesses with a wide array of touchscreens to choose from. The capacitive and resistive touchscreens are the likeliest to come across since they dominate the market today. 

When it comes to choosing a touchscreen for your industrial application, it is crucial that you understand the most popular types of touchscreens to find the best solution. Learn more about the differences between capacitive and resistive touchscreens, including the pros and cons, from the experts at ACS Industrial Services. While resistive touchscreens are still available, capacitive touchscreens are the wave of the future.

Resistive Touchscreens

The resistive touchscreen uses a simple technology and comprises two flexible layers separated by an air gap or inert gas. Both layers have a metallic coating, which creates an electric flow when pressure is applied. When someone applies pressure to the screen, the resistance is measured between the two layers indicating where the point of contact is on the panel. 


Comparing Bearings for Industrial Machinery

Bearings are fundamental to the machine industry as they make up one of the most vital aspects of machinery. Bearings for industrial machinery help to facilitate the rotation of one element relative to minimize friction between the two objects. Ultimately, the ease of moving increases the performance and efficiency of the machine. 

Many industrial techs looking to repair electronic devices want to know how bearings for industrial machinery compare. This blog talks about the different types of bearings and their uses. Keep reading to learn more from the experts at ACS Industrial Services.

What are the Different Types of Bearings and their Uses?

Bearings can be classified into four categories; cylindrical bearings, ball bearings, tapered bearings, and needle bearings. Each type has its strengths and weaknesses, which is why you may want to compare each of these bearings to establish the one that suits your needs.

Let’s take a deep dive into the four different types: