SD700FL SERIES
POWER ELECTRONICS
86
OPTIONAL EQUIPMENT
12.4.
Dynamic Braking Unit B150
The Dynamic brake permits to control the regenerated energy for series SD700, SD700KOMPAKT
and SD700FL. B150 dynamic brake activates an IGBT to discharge the DC bus over external resistors
when the DC voltage overpasses a pre-set value. This activation signal could also be delivered by the
drive acquiring an optional Master- Slave mode braking board.
The B150, with reduced dimensions and high reliability, is the main power-switching device of such a
dynamic braking systems.
Figure 12.3 Dynamic Braking Unit. Dimensions
REFERENCE
VOLTAGE
CURRENT (A)
MINIMUM
RESISTANCE
RATING (Ω)
DIMENSIONS (MM)
WEIGHT
MAXIMUM
CONTINUOUS
W
D
H
B150.2
230Vac
300A
150A
2.4Ω
177
221
352
7 kg
B150
400Vac, 500Vac
300A
150A
2.4Ω
B150.6
690Vac
200A
100A
5.75Ω
12.4.1.
Optional Board for Slave Mode Brake
There is the possibility that the drive controls
the activation of the dynamic braking module
B150. For this, the optional board SD7DB must
be used, allowing the drive to control the
dynamic braking unit B150 that will operate as
Slave unit of the drive. This optional board is
not required in case of the unit B150 operates
in Master mode.
Figure 12.4 Optional Board for Slave Mode Brake
(SD7DB)
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