Baumuller BM4400 - Additional Data Referring to Water-Cooled Brake Resistors

Additional data referring to water-cooled brake resistors
Instruction handbook b maXX BM4400, BM4600, BM4700
Document No.: 5.12008.07 Baumüller Nürnberg GmbH
106
of 358
3.6
3.6 Additional data referring to water-cooled brake resistors
Technical data
brake resistors
1)
The total depth of the device in the cooling version F increases by the specified value (see ZDimensions–
from page 31). At devices of the cooling version Z the dimensio
ns of the device do not change.
2)
The DC link voltage must not exceed 800 V.
Calculation of the permitted length of the braking procedure see ZCa
lculations– from page 107.
3)
The mentioned continuous power is reached if the water flow amount is at least 10 l/min. The inlet tempera-
ture may not be greater than 45 °C.
The brake resistor output power diminishes fr
om the rated value to 0, if the inlet temperature increases from
45°C to 60 °C.
Device version Brake
resistor
Brake
resistor
current
Depth
of
device
1)
Brake
peak
power
P
Smax
3)
Brake
continuous
power
P
Dmax
2) 3)
Constants
for calculation
C
1
C
2
C
3
BM4434-ZIX/FIX-XXXXXR16
BM4435-ZIX/FIX-XXXXXR16
BM4632-ZIX/FIX-XXXXXR16
16  49 A +20 mm 38 kW 2 kW 0.139 K/W 0.05081 K/Ws -6.7751 s
-1
BM4444-ZIX/FIX-XXXXXR10
BM4445-ZIX/FIX-XXXXXR10
BM4446-ZIX/FIX-XXXXXR10
BM4641-ZIX/FIX-XXXXXR10
BM4642-ZIX/FIX-XXXXXR10
10  78 A +35 mm 61 kW 1.5 kW 0.200 K/W 0.01605 K/Ws -0.9169 s
-1
BM445X-ZIX/FIX-XXXXXR05
BM465X-ZIX/FIX-XXXXXR05
BM465X-ZIX/FIX-3XXXXR05
BM475X-FIX-3XXXXR05
5  156 A +35 mm 122 kW 3 kW 0.100 K/W 0.00802 K/Ws -0.9169 s
-1
BM446X-ZIX/FIX-XXXXXR03
BM466X-ZIX/FIX-XXXXXR03
BM466X-ZIX/FIX-3XXXXR03
BM476X-FIX-3XXXXR03
3.33  234 A +35 mm 183 kW 5 kW 0.067 K/W 0.00535 K/Ws -0.9169 s
-1
BM447X-FIX-XXXXXR03
BM477X-FIX-3XXXXR03
3.33  234 A +35 mm 183 kW 3.5 kW 0.067 K/W 0.00535 K/Ws -0.9169 s
-1
NOTE!
The water-cooled brake resistors offer the optimum of power loss, which can be dis-
sipated, at a minimum unit volume. However, 10 % of the brake resistor power is not
dissipated via the cooling water. It is emitted to the environmental air. 
At operation with rated power the brake resistors reach temperatures of 200 °C on
the rear side.