Lenze EMB9351-E Instructions De Mise En Service page 85

Step 1: Calculate brake resistance
U
+
R
B
P
gen,max
Step 2: Determine the number of brake resistors
A brake resistor is selected with 47 W.
Please observe the rated power when dimensioning the brake resistors. It
ƒ
results from the average braking power of a machine cycle.
Step 3: Calculate the number of brake choppers per brake resistor
+
N
Brm
The brake resistor requires one brake chopper.
EDBMB935X DE/EN/FR 12.0
2
2
(725 V)
DC + + 47.8 W
11 kW
P (3s)
+ 9.33 kW
gen,ave
1 @ 10 kW
@ P
N (U )
R N
ch
l
Dimensioning
Dimensioning examples
Vertical movement
+ 0.933 å 1
5
85