Load Analyzer - ABB ACS880 Firmware Manual

68 Program features
Note: The accuracy of the energy savings calculation is directly dependent on the
accuracy of the reference motor power given in parameter 45.19 Comparison power.
Settings
Parameter group 45 Energy efficiency (page 245).
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Load analyzer

Peak value logger
The user can select a signal to be monitored by a peak value logger. The logger
records the peak value of the signal along with the time the peak occurred, as well as
motor current, DC voltage and motor speed at the time of the peak. The peak value is
sampled at 2 ms intervals.
Amplitude loggers
The control program has two amplitude loggers.
For amplitude logger 2, the user can select a signal to be sampled at 200 ms
intervals, and specify a value that corresponds to 100%. The collected samples are
sorted into 10 read-only parameters according to their amplitude. Each parameter
represents an amplitude range 10 percentage points wide, and displays the
percentage of the collected samples that have fallen within that range.
Amplitude ranges
(parameters 36.40...36.49)
Amplitude logger 1 is fixed to monitor motor current, and cannot be reset. With
amplitude logger 1, 100% corresponds to the maximum output current of the drive
(I ). The measured current is logged continuously. The distribution of samples is
max
shown by parameters 36.20...36.29.