Eaton PowerXL - Braking Resistances

4 Accessories
4.6 Braking resistances
94 DC1-S…20…, DC1-S…OE1 Variable Frequency Drives 05/21 MN040058EN www.eaton.com
4.6 Braking resistances
The following tables provide examples of DX-BR… braking resistors rated for
individual DC1-S… variable frequency drives. They are specified for
intermittent braking with a cycle time t
C
of 120 seconds and a pulse power
P
Peak
equal to the maximum braking power P
max
of the variable frequency
drive with the rated motor output.
Figure 64: DC1-S… variable frequency drive with a frame size of FS2 and a DX-BR3-100
braking resistor
Figure 63: Braking resistor design examples:
DX-BR3-100 (left), DX-BR100-100 (right)
NOTICE
The specified minimum resistance R
Bmin
must not be fallen
below.

CAUTION
Brake resistors get extremely hot during operation!
