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Is your industrial power supply shutting down due to overvoltage or overcurrent protection? These safety features are designed to protect your equipment, but frequent shutdowns indicate an underlying problem. ROC Industrial specializes in diagnosing and repairing the root causes of overvoltage and overcurrent shutdowns in power supplies. We offer fast, reliable, and cost-effective solutions.
Understanding Overvoltage and Overcurrent Shutdowns
Overvoltage Protection (OVP): Power supplies have built-in protection circuits that shut down the output if the voltage exceeds a safe limit. This prevents damage to connected equipment.
Overcurrent Protection (OCP): Power supplies also have protection circuits that limit the output current. If the load attempts to draw too much current, the power supply will shut down or limit the current.
Common Causes of Overvoltage Shutdowns
Internal Power Supply Fault: A failure in the voltage regulation circuitry can cause the output voltage to rise above the safe limit.
Regenerative Braking Issues (Servo Systems): In servo systems, when a motor decelerates, it can act as a generator, sending voltage back to the power supply. If the power supply's regenerative braking circuit is faulty or not properly configured, this can cause an overvoltage shutdown.
Incorrect Input Voltage: If the input voltage is too high, it can sometimes cause the output voltage to also be too high.
Component Failure
Common Causes of Overcurrent Shutdowns
Short Circuit: A short circuit in the load (the equipment being powered) will cause a very high current draw, triggering the overcurrent protection.
Overload: Connecting a load that draws more current than the power supply is rated for.
Motor Problems (Servo Systems): A faulty servo motor (e.g., shorted windings) can draw excessive current.
Mechanical Binding (Servo Systems): If the machine being driven by the servo motor is jammed or bound, it can cause the motor to draw excessive current.
Incorrect Parameter Settings (Servo Systems): Incorrect current limits or acceleration/deceleration rates in the servo drive can lead to overcurrent faults.
Component Failure: A failing component within the power supply can sometimes cause it to trigger its own overcurrent protection.
Power Supply Brands We Service (Overvoltage/Overcurrent Repair)
We repair overvoltage and overcurrent shutdown problems on all major power supply brands, including:
SolaHD
Mean Well
Phoenix Contact
TDK-Lambda
PULS
Siemens (SITOP)
Allen-Bradley (Rockwell Automation)
ABB
Schneider Electric
XP Power
Bel Power Solutions
TRACO Power
Cosel
Murrelektronik
Weidmuller
... (and many more)
Our Overvoltage/Overcurrent Shutdown Repair Process
Free Evaluation & Quote: Describe the problem, including any error codes or LED indicators, the power supply model, and the connected load. We provide a free quote.
Shipping: Ship the power supply to our facility.
Diagnosis: Our technicians use specialized diagnostic equipment to determine the root cause of the shutdown. This is crucial; simply resetting the power supply or replacing a fuse without addressing the underlying problem will likely lead to repeated shutdowns. Diagnosis may involve:Testing the output voltage and current under various load conditions.
Inspecting the load for short circuits or other problems.
Checking internal power supply components for failures.
(For servo systems) Analyzing drive fault codes and parameters.Repair/Replacement: We perform the necessary repairs, which may include:Repairing or replacing faulty components within the power supply.
Addressing problems with the connected load (if applicable - we may recommend you have the load checked separately).
Adjusting parameters (in servo systems).
Repairing wiring issues.Testing & Quality Assurance: We thoroughly test the repaired power supply under a controlled load to ensure the overvoltage/overcurrent protection is functioning correctly and the shutdown issue is resolved.
Fast Turnaround: Minimize downtime.
Warranty: We offer a comprehensive warranty.
Why Choose ROC Industrial for Overvoltage/Overcurrent Repair?
Expert Technicians: Our team has extensive experience in diagnosing and repairing complex power supply issues.
Advanced Diagnostic Tools: We use specialized equipment to identify the root cause, not just the symptom.
Cost-Effective Solutions: Repair is often much cheaper than replacement.
Fast Turnaround Times: Minimize downtime.
Comprehensive Warranty: We stand behind our work.
Stop Shutdowns and Protect Your Equipment!
Contact ROC Industrial for a free quote and expert power supply repair services.