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Function description
The DC link voltage increases as soon as the motor supplies regenerative power to the converter
when braking. The regenerative power means that the DC link voltage in the converter
increases. Depending on the DC link voltage, the converter outputs the regenerative power to
the braking resistor through the braking chopper. The braking resistor converts the regenerative
power into heat, therefore preventing DC link voltages > Vdc_max.
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Figure 8-69
Simplified representation of dynamic braking with respect to time
Using p0219, you define the maximum braking power that the braking resistor must absorb.
Braking resistor braking power
For p0219 > 0, the converter deactivates the VDC_max controller.
For vector control, p0219 defines the regenerative power limit p1531.
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The converter extends the ramp-down time of the motor when the braking power is too low.
The SIZER PC tool supports you when calculating the braking power.
Configuring support (Page 416)
Advanced commissioning
8.20 Electrically braking the motor
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 10/2020, FW V4.7 SP13, A5E31298649B AL
317
Содержание SINAMICS G110M
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Страница 426: ...Index Distributed converter for SIMOGEAR geared motors 424 Operating Instructions 10 2020 FW V4 7 SP13 A5E31298649B AL ...
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