Program features 133
Custom U/f ratio
The user can define a U/f curve (output voltage as a function of frequency). This
custom ratio is used only in special applications where linear and squared U/f ratio
are not sufficient (eg when motor break-away torque needs to be boosted).
Note: The voltage and the frequency points of the U/f curve must fulfill the following
requirements:
2610 < 2612 < 2614 < 2616 < 2618 and
2611 < 2613 < 2615 < 2617 < 9907
WARNING! High voltage at low frequencies may result in poor performance or
motor damage (overheating).
Settings
Diagnostics
Parameter Additional information
2605 Custom U/f ratio activation
2610…2618 Custom U/f ratio settings
Fault Additional information
PAR USER DEFINED U/F Incorrect U/f ratio
f (Hz
)
Custom U/f ratio Voltage (V)
Par. 2618
Par. 2616
Par. 2614
Par. 2612
Par. 2610
Par. 2603
Par. 2611 Par. 2613 Par. 2615 Par. 2617 Par. 9907
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