Technician inspecting VFD control wiring
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VFD Won’t Start? Fix Control Wiring Errors Fast

Estimated reading time: 6 minutes Understanding Why Your VFD Won’t Start Nothing frustrates a maintenance crew faster than pressing the start button and watching the motor sit idle. If your VFD won’t start, the culprit is usually…
Motor and VFD setup for autotune
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VFD Auto tune: Setup, Troubleshooting & Best Practices

Estimated reading time: 11 minutes Variable Frequency Drives (VFDs) are widely used to control motor speed and torque in industrial and commercial applications. However, to get the best performance from a VFD, you must take advantage of…
Close-up of a Class A GFCI outlet with test and reset buttons
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VFD Tripping GFCI Breaker: Lenze Drive Solutions & Fixes

Estimated reading time: 12 minutes Have you ever dealt with your VFD tripping a GFCI breaker unexpectedly? If so, you’re not alone. Variable frequency drives (VFDs) often trip GFCI devices, especially in wet areas or where codes mandate…
Smoke rising from a failed VFD with burn marks on internal components
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VFD Hardware Failure: Diagnosis and Replacement Guide

Estimated reading time: 9 minutes When a variable frequency drive (VFD) suffers a catastrophic hardware failure, it usually gives unmistakable warning signs. The user might hear a loud pop or bang. They might also see smoke or scorch marks.…
VFD screen indicating a Ground Fault alarm
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VFD Ground Fault & Short-Circuit Trips: Causes & Solutions

Estimated reading time: 11 minutes Ground fault and short-circuit trips in VFDs are common but often confusing events for drive users. In a VFD, these faults appear suddenly and can stop the motor immediately. This often leaves operators…
Technician verifying VFD parameter settings for motor current and overload
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VFD Overcurrent Fault & Motor Overload – Causes & Fixes

Estimated reading time: 19 minutes Variable Frequency Drives (VFDs) are essential for controlling motor speed and protecting equipment in industrial applications. However, VFD overcurrent faults and motor overload trips are common issues…
Simplified DC-bus diagram showing rectifier, capacitors, and inverter stages of a VFD
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VFD Overvoltage Faults During Deceleration: Causes & Fixes

Estimated reading time: 13 minutes Variable Frequency Drives (VFDs) are essential for controlling motor speed in industrial and commercial applications. However, VFD overvoltage faults are a common issue that often occurs when a motor is…
“Close-up of a large industrial cooling fan—proper airflow prevents VFD overheating”
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VFD Overheating & Cooling System Failures: Causes and Fixes

Estimated reading time: 13 minutes Variable Frequency Drives (VFDs) are vital for controlling motor speed and efficiency in industrial applications. However, VFD overheating is a common problem that can trigger fault alarms and even lead…
vfd-alter-motor-efficiency

How Will VFDs Alter Motor Efficiency (Pt. 2)

In the past article, we have established that VFDs are useful in applications where the load needs to be driven at various speed. We’ve also seen the ease of how VFDs can be integrated into existing control system. But how do you maximize…
How Will VFDs Alter Motor Efficiency

How Will VFDs Alter Motor Efficiency (Pt. 1)

When you’re operating motor based equipment, energy efficiency has always been a concern, especially when calls for a greener environment are getting louder. If you’ve yet to explore the option of adding a Variable Frequency Drive (VFD),…

Nema Cabinet Ratings: Protecting a VFD from environmental conditions

Nema cabinet ratings are designed to protect electrical components from environment-specific threatening conditions. Nema cabinet ratings are made for a range of different environmental conditions. There are as many Nema cabinet ratings available…

ABB Process Automation: New I/O Solution now available

ABB Process automation projects have employed controller-centric distributed control system (DCS) architectures for decades. This approach creates dependencies between project tasks that complicate late changes. ABB’s new I/O solution will…