This FAQ has been written for NEAL (North East Africa and Levant) region. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.
There are three types of braking resistors for ATV900 VSD as below:
light braking cycle
Braking resistors for light braking cycles for machines with cycles and inertia. The braking
power is limited to 1.5 Tn for 0.8 s every 40 s
Medium braking cycle
Braking resistors for medium braking cycles for machines with high inertia and conveyors.
The braking power is limited to 1.35 Tn for 4 s every 40 s
Severe braking cycle
Braking resistors for severe braking cycles for machines with very high inertia and vertical
movements (hoisting). The braking power is limited to 1.65 Tn for 6 s and Tn for 54 s every
120 s
For further information, kindly check the catalog pages attached.
light braking cycle
Braking resistors for light braking cycles for machines with cycles and inertia. The braking
power is limited to 1.5 Tn for 0.8 s every 40 s
Medium braking cycle
Braking resistors for medium braking cycles for machines with high inertia and conveyors.
The braking power is limited to 1.35 Tn for 4 s every 40 s
Severe braking cycle
Braking resistors for severe braking cycles for machines with very high inertia and vertical
movements (hoisting). The braking power is limited to 1.65 Tn for 6 s and Tn for 54 s every
120 s
For further information, kindly check the catalog pages attached.
Released for:Schneider Electric Egypt and North East Africa
