Moeller DF6-340 Series - Page 116

01/02 AWB8230-1413GB
DC braking (DCB)
113
Derating for DC braking
The DF6 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 you must set the relative
braking torque M
B
(a fig. 110 and fig. 111).
A058 Braking
duration for
acceleration
– j 0 to 60 s The time during which DC braking is active before
acceleration.
0.0
A059 Braking
frequency f
B
– – 0.5 to 12 kHz Pulse frequency for DC braking; applies to DF6-340-11K to
DF6-340-55K (observe derating).
3.0
0.5 to 10 kHz Pulse frequency for DC braking; applies to DF6-340-75K to
DF6-340-132K (observe derating).
PNU Name
Adjustable in RUN mode Value Function WE
Normal Extended
Figure 110: Derating DC braking
DF6-340-11K to DF6-340-55K
M
B
: Braking torque
f
B
: Braking frequency
0
1513119753
100
75
46
34
22
10
[%]
M
B
f
B
[kHz]
Figure 111: Derating 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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