Why is the dynamic braking resistor repeatedly failing in our lift application?
Issue:
Why is the dynamic braking resistor repeatedly failing in our lift application?
Product Line:
Dynamic braking resistors, Altivar 71
Environment:
Lifting applications
Cause:
DBR failure
Resolution:
Generally, the dynamic braking resistors burning or failure happens due to higher braking energy dissipation than it's power rating.
If you select the normal braking resistor part reference provided in the catalog, the power rating of the resistor is insufficient to dissipate the braking energy generated by the motor in during downward movement. Hence it will burn the resistor due to overheating.
The lift is a vertical and cyclic movement application, and the braking power dissipation is similar to hoisting application. Hence it is necessary to select the hoisting resistor part references provided in the ATV71 catalog to avoid DBR failure due to overbraking.
Why is the dynamic braking resistor repeatedly failing in our lift application?
Product Line:
Dynamic braking resistors, Altivar 71
Environment:
Lifting applications
Cause:
DBR failure
Resolution:
Generally, the dynamic braking resistors burning or failure happens due to higher braking energy dissipation than it's power rating.
If you select the normal braking resistor part reference provided in the catalog, the power rating of the resistor is insufficient to dissipate the braking energy generated by the motor in during downward movement. Hence it will burn the resistor due to overheating.
The lift is a vertical and cyclic movement application, and the braking power dissipation is similar to hoisting application. Hence it is necessary to select the hoisting resistor part references provided in the ATV71 catalog to avoid DBR failure due to overbraking.
Publikováno pro: Schneider Electric Česká republika
Potřebujete pomoc?
Nástroj pro výběr produktů
Rychle a snadno vyhledávejte správné produkty a příslušenství pro vaše aplikace.
Získejte nabídku
Poptejte se nás online a náš lokální specialista se s vámi spojí!
Kde nakoupit?
Jednoduše najděte nejbližšího distributora výrobků Schneider Electric ve vašem okolí.
Centrum nápovědy
Zdroje podpory pro všechny své potřeby najdete na jednom místě.