Overload
durations
D.7
T
D.7
Overload
durations
For the possible pulse frequencies there are three time constants (see table) in the following parameters:
• P0014 for 4kHz
• P0015 for 8kHz
• P0034 for 16kHz
If the thermal characteristic limit is reached it is automatically limited to the nominal current.
Frequency-dependent nominal currents: The nominal currents for the according pulse frequencies are in:
• P0010 for 4kHz
• P0012 for 8kHz
• P0032 for 16kHz
In the diagram the characteristic limits in dependance with the preloading are shown.
1
2
3
4
5
0
0.5
1
1.5
2
2.5
relative overload durations
thermal time constant ot the power unit =
τ
t/
τ
i/i
nom
no previous load
previous load 0.2 i
nom
previous load 0.5 i
nom
Figure D.6: Overload durations
Instrution
Manual
b
maXX®
BM3400
185
Do
ument
No.:
5.07013.03
from
206
Содержание b maXX BM3400 Series
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