3.3.4.4 Maximum current (OL2)
It can be adjusted in the drive converter parameters if error (OL2) shall be triggered
when exceeding the maximum currents, or if the switching frequency is automatically
reduced (derating).
The following tables indicate the permissible maximum current for 6 output frequency
values. In between there is a linear interpolation. Unit size 13 is represented exemplary.
Overload characteristic in the lower speed range (OL2)
0
50
100
150
200
250
300
350
0 3,1 6,2 12,5 25 50
Output frequency in Hz
OL2 current to rated current in %
The characteristic curves represent the real maximum current values using the example of unit size 12.
Legend
Overcurrent I
OC
Switching frequency 4 kHz
Switching frequency 8 kHz
Switching frequency 16 kHz
Not available for modulation. The error OC is triggered at 300 % overload.
Figure 6: Overload characteristic in the lower speed range (OL2)
The values for the respective unit size are listed in the following tables.
34
UNIT DATA
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