Beckhoff KL3403 Series Documentation page 18

Product overview
Fig. 7: Four-quadrant representation of active/reactive power in motor and generator mode
Peak current measurement
A distinction has to be made between the peak instantaneous value and the peak rms value. The peak rms
value always refers to the peak value within the specified measuring interval.
Frequency measurement
The KL3403 can measure the frequency of the input signals at the voltage circuits (L1, L2, L3). The
measurement takes 5 seconds (measuring interval).
Measuring error
Frequency < 70 Hz
Measuring < 0.0 %
error
18
≥ 70 Hz ≥ 75 Hz
< 0.2 % < 0.5 %
Version: 3.1.0
≥ 80 Hz ≥ 90 Hz
< 1.5 % < 2.0 %
≥ 100 Hz
< 3.0 %
KL3403