Duty Cycle - Siemens SINAMICS S120 Equipment Manual

Cabinet Modules
5.7 Central Braking Modules
Note
Sufficient space must be available for dissipating the energy converted by the braking
resistor.
A sufficient distance from flammable objects must be ensured.
The braking resistor must be installed as a free-standing unit.
Objects must not be placed on or anywhere above the braking resistor.
The braking resistor should not be installed underneath fire-detection systems, since these
could be triggered by the resulting heat.
For outdoor installation, a hood should be provided to protect the braking resistor from
precipitation (in accordance with degree of protection IP21).
5.7.6.3

Duty cycle

The following duty cycle applies only to those resistors that can be ordered as standard.
Duty cycle
Figure 5-37
Note
For other duty cycles, the resistors must be requested on an order-specific basis.
216
Duty cycle for braking resistor
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A