Electrical Anti-Sway for Euro-Style Variable-Frequency Cranes

European-style variable-frequency double-girder cranes are widely used in industrial production, and their anti-sway function is critical for improving operational efficiency and safety. This article provides a detailed explanation of the electrical anti-sway wiring method for such cranes and discusses its impact on travel distance.

European-style variable-frequency double-girder cranes

1. Electrical Anti-Sway Wiring Method for European-Style Variable-Frequency Double-Girder Cranes

When installing the electrical system of a European-style variable-frequency double-girder crane equipped with an anti-sway function, particular attention must be paid to the wiring method. The general steps are as follows:

• Ensure that the power supply is correctly connected to the inverter’s input terminals R, S, and T, and never to the output terminals U, V, and W to avoid damaging the inverter.

  
  

• After completing the wiring, remove all stray wire ends and keep the inverter clean to prevent malfunctions and failures.

  
  

• Use shielded cables or twisted-pair wires in the inverter’s control circuit to reduce electromagnetic interference. The control wiring must be laid separately from the main power and high-voltage circuits.

  
  

• Given the special requirements of the anti-sway function, additional control circuits may be necessary for precise sway control. These circuits must also follow the same wiring principles mentioned above.

2. Impact of Electrical Anti-Sway on Crane Travel Distance

The anti-sway function primarily minimizes hook swing by precisely controlling the crane’s speed and direction. Therefore, it improves the accuracy of travel distance control rather than altering the actual travel distance itself.

• Without the anti-sway function, hooks tend to swing significantly during starting, stopping, acceleration, or deceleration, which not only reduces operational efficiency but also poses safety risks.

  
  

• With the anti-sway function enabled, the crane maintains hook stability during such operations, allowing the hook to be moved more precisely to the target position, improving both efficiency and safety.

3. Comparison Between Standard and Anti-Sway Equipped Cranes in Travel Distance

In standard European-style variable-frequency double-girder cranes without an anti-sway function, travel distance accuracy can be compromised by hook swing. In contrast, cranes with anti-sway capabilities can control travel distance more accurately.

• In practical operations, anti-sway cranes significantly reduce hook oscillation, enabling the crane to reach designated positions faster and more precisely.

  
  

• This not only improves production efficiency but also reduces safety risks during operation.

Conclusion

The electrical anti-sway wiring method for European-style variable-frequency double-girder cranes requires special attention to ensure the anti-sway function’s effectiveness. By reducing hook swing, the anti-sway function enhances travel distance control accuracy, ultimately improving operational efficiency and safety.