Frequency-Dependent Maximum Current (Ol2) For Peak Power Devices - KEB COMBIVERT F6 Series Instructions For Use Manual

DEVICE DATA OF THE PEAK POWER DEVICES
Operation in the range of the thermal overload limit
Due to the high steepness of the overload characteristic, the duration of a permissible
overload in this range ① cannot be determined exactly. Therefore, the design of the drive
controller should be assumed to have a maximum overload time of 300s.

3.2.3.2 Frequency-dependent maximum current (OL2) for Peak Power devices

The characteristics of the maximum currents for a switching frequency which are de-
pending on the output frequency are different for each drive controller, but the following
rules are generally applicable:
•
•
If error (OL2) shall be triggered on exceeding the maximum currents or if the switching
frequency is automatically reduced "derating" can be adjusted in the drive controller
parameters.
Applies for the rated switching frequency: at 0 Hz the drive controller can provide at
least the rated output current and from 6 Hz the overcurrent I
Lower maximum currents apply for switching frequencies > rated switching frequency.
.
OC
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