Altivar Process
Option: Braking resistors
- With IP20 and IP23 casing and thermal monitoring provided by temperaturecontrolled switch or by the drive
- The internal circuits of Altivar Process drives rated 220 kW/350 HP or less at 400...480 V and 45 kW/60 HP or less at 200...240V have a built-in dynamic brake transistor.
- An external braking unit is necessary for wall-mounting Altivar Process drives above 220 kW at 400...480 V as well as 55 kW/75 HP and 75 kW/100 HP at 200...240 V
- 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.
- 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.
- 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.










