Technical Data
Instruction handbook
b maXX
BM5500, BM5600, BM5700
Document No.: 5.13008.10
117
3
Example for the calculation of BM5546
Device type
Peak
power
P
Smax
3)
Continuous
power
P
Dmax
2) 3)
Constants
for calculation
C
1
C
2
C
3
BM5546-ZIX/FIX-XXXXXR10
61 kW
1.5 kW
0.2 K/W
0.01605 K/Ws
-0.9169 s
-1
Technical data refer to brake resistors on
P
S
t
on
t
off
P
S_1
= 20 kW < 61 kW
t
on_1
= 0.15 s < 1 s
t
off_1
= 1.11 s
P
S_2
= 13 kW < 61 kW
t
on_2
= 0.15 s < 1 s
t
off_2
= 1.79 s
P
S_3
= 20 kW < 61 kW
t
on_3
= 0.15 s < 1 s
t
off_3
= 6.85 s
P
S_4
= 23 kW < 61 kW
t
on_4
= 0.15 s < 1 s
t
off_4
= 1.85 s
P
S_5
= 24 kW < 61 kW
t
on_5
= 0.15 s < 1 s
t
off_5
= 5.65 s
T
cycle
=
=
5
0.15s + 1.11s + 1.79s + 6.85s + 1.85s + 5.65s
= 18 s
P
D
=
= 0.417 kW = 417 W
< P
Dmax
< 1.5 kW internal brake resistor can be used
T
M
=
P
0
C
1
= 417 W
0.2 K/W
= 83.4 K
Start value:
T
0
=
P
0
C
1
= 417 W
0.2 K/W
= 83.4 K
T
1
= T
0
+ C
2
P
s_1
t
on_1
= 83.4 K + 0.01605 K/Ws
20 000 W
0.15 s
= 131.55 K
T
2
=
=
= 132.1 K
t
on_n
t
off_n
1
n
+
1
n
D
1
2
---
P
s_1
t
ein_1
+ ......+ P
s_n
t
off_n
T
cycle
-------------------------------------------------------------------------------------------------
1
2
---
20kW 13kW 20kW 23kW 24kW
+
+
+
+
0 15s
18s
-----------------------------------------------------------------------------------------------------------------------------------
=
=
T
2
T
1
T
M
–
e
C
3
t
off_1
T
M
C
2
P
s_2
t
on_2
+
+
=
2
131
·
,55K 83,4K
–
e
0,9169s
–
1
–
1,11s
83,4K 0,01605K/Ws 13000W 0,15s
+
+
=
Summary of Contents for b maXX 5500
Page 315: ......
