01/02 AWB8230-1415GB
DC braking (DCB)
131
Derating for DC braking
The DV6 frequency inverters use the braking frequency f
B
, which
can be adjusted under PNU A059, to generate the required
voltage for DC braking. This is not identical with the pulse
frequency during motor operation set under PNU b083. The higher
the set braking frequency, the lower is the relative braking torque
M
B
(a Fig. 128 and Fig. 129).
A058 Braking dura-
tion for accele-
ration
– j 0 to 60 s The time during which DC braking is active before accelera-
tion.
0.0
A059 Braking
frequency f
B
– – 0.5 to 15 kHz Pulse frequency for DC braking; applies to DV6-340-075 to
DV6-340-55K (observe derating).
3.0
0.5 to 10 kHz Pulse frequency for DC braking; applies to DV6-340-75K to
DV6-340-132K (observe derating).
PNU Name
Adjustable in RUN mode Value Function WE
Normal Extended
Figure 128: Derating for DC braking
DV6-340-075 to DV6-340-55K
M
B
: Braking torque
f
B
: Braking frequency
0
1513119753
100
75
46
34
22
10
[%]
M
B
f
B
[kHz]
Figure 129: Derating for DC braking
DF6-340-75K to DF6-340-132K
M
B
: Braking torque
f
B
: Braking frequency
0
109753
100
80
60
40
20
10
[%]
M
B
f
B
[kHz]
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