Applied Motion SV7-C-CE - Manual (Page 40)

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SV7 Hardware Manual 920-0012F
12/18/2014
Setting Drive Current Limits
The SV7 allows the user to set both the Motor Continuous and Peak current limits. Current settings
are an RMS value. Using the QuickTuner™ the current settings can be uploaded and downloaded.
Setting the current limits requires the user to know the limitations of the motor. In most cases refer-
ring to the motor manufacturers specification will give the proper information. For AMP motors,
motor settings are available in parameter files that are located on the PC where QuickTuner™ was
installed.
What is “Peak Current Limit”?
The SV7 uses this current value to establish the maximum possible RMS current that will be driven
to the motor. The peak current time is set to one second. That is, if the drive attempts to run at peak
current for more then one second it will fold back the current to the continuous current setting.
The peak current time is actually calculated on a curve using an I²/T method. For current values that
are less than the peak but greater than the continuous, the current foldback time is calculated from
the peak and continuous settings. As shown in the diagram below, current values below the peak
value can be used for longer periods of time.