Siemens MICROMASTER 440 Operating Instructions Manual page 143

Issue 10/03
braking resistor, as listed in Catalog DA51.2, the chopper control can be
permanently operated with 100% power.
a
P
100
P
DB
t
t
ON
OFF
t
cycle
b
P
100
P
DB
t
100
t
P1237
Fig. 3-59 Chopper load duty cycle
For MICROMASTER 440, up to and including Size FS F, the braking module is
integrated in the drive inverter and the braking resistor can be connected via
external terminals B+, B-.
MICROMASTER 440 Operating Instructions
6SE6400-5AW00-0BP0
t
OFF
t
cycle
P1237 t t
ON OFF
5 % 12.0 228.0
10 % 12.6 114.0
20 % 14.2 57.0
t
50 % 22.8 22.8
100 % Infinite
t
3 Functions
t P
cycle DB
240.0 0.05
126.6 0.10
71.2 0.20
45.6 0.50
0 Infinite 1.00
143