Lenze EMB9352−C - Manual (Page 78)

Dimensioning
Calculate max. running time for brake chopper and brake resistor
5
l
78 EDBMB935X DE/EN/FR 13.0
I
rated
Rated current EMB9352, mean arithmetic value
t
on
Running time
0 Max. running time for brake resistance <R B,lim
Condition: t
on
+ t
off
= 3 s
1 Max. running time for brake resistance ³R
B,lim
Depending on the technical data of the brake resistor
Brake resistance R
B
³ R
B,lim
: Calculate running time and dead time
t
on,max
+
Q
B
@ R
B
U
max
2
t
off
+
Q
B
P
N
* t
on,max
t
on,max
Maximum running time in s
t
off
Dead time in s
RB Brake resistance in W
U
max
Max. operating voltage in V
P rated Rated power in W
Q
B
Heat in Ws
The data can be obtained from the documentation for the brake resistor
Brake resistance R
B
< R
B,lim
: Condition for the running time and dead time
t
on,max
) t
off
+ 3 s
t on,max Maximum running time in s
t
off
Dead time in s