VFD screen indicating a Ground Fault alarm

VFD Ground Fault & Short-Circuit Trips: Causes & Solutions

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Estimated reading time: 11 minutes Ground fault and short-circuit…
Technician verifying VFD parameter settings for motor current and overload

VFD Overcurrent Fault & Motor Overload – Causes & Fixes

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Estimated reading time: 19 minutes Variable Frequency Drives…
Simplified DC-bus diagram showing rectifier, capacitors, and inverter stages of a VFD

VFD Overvoltage Faults During Deceleration: Causes & Fixes

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Estimated reading time: 13 minutes Variable Frequency Drives…
“Close-up of a large industrial cooling fan—proper airflow prevents VFD overheating”

VFD Overheating & Cooling System Failures: Causes and Fixes

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Estimated reading time: 13 minutes Variable Frequency Drives…

Download: SJ-P1 CAD Drawings

Thank you for choosing Precision Electric: Online as your technical…

Sullair Drive Repair

Sullair drive repair has over the past decade become a cost-efficient…

Download: SJ-P1 Operating Instructions Manual

Thank you for choosing Precision Electric: Online as your technical…