HNC Electric HBU Series, User Manual

Page: 32 / 37

HBU Series Braking Unit
31
If braking period of speed regulating system is more than
200S and braking frequentness Kc<10% within one braking
period, choose model from form 5.1 according to the load.
When actual load with motor is less than 60% of power of
motor, take it as light-load device. Otherwise it is heavy-load
device.
If braking period of speed regulating system is less than
200S, or braking frequentness Kc is >10% within one braking
period, simply choosing model for braking unit from form 5.1
could not guarantee normal work of device. At this time,
calculate out rated current and peak current which is required
for braking according to braking request of actual load, then
from form 2.1, choose out model which rated current and peak
current meet requirements.