Inovance MD500T75G - Page 153

MD500 User Manual 7. Description of Parameters
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Slip Compensation
The slip compensation function compensates for the motor speed slip when load increases.
Function Code Parameter Name Setting Range Default
F1-05 Rated motor speed 1 to 65535 RPM Model
dependent
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is obtained from calculation of the rated motor frequency and rated motor speed.
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For example, the frequency reference of the AC drive is 50 Hz, the rated motor frequency is 50 Hz, the rated motor speed is 1460
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speed drops to approximately 1460 rpm.
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rpm. The AC drive performs automatic compensation according to the load size to ensure the motor speed accuracy.
Note
ƕ Set the rated motor speed, rated motor current and rated motor power before using this function.
ƕ Perform the static auto-tuning 1 (F1-37 = 1) before using this function.
ƕ The best slip compensation result will be achieved if this function is used
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7.5.3 Overcurrent Stall Prevention
When the output current exceeds the value set in F3-18 during acceleration, running at constant speed or deceleration, the
overcurrent stall prevention function is enabled and the output frequency starts to drop. Until the output current recovers below
the stall prevention level, the output frequency starts to accelerate to the target frequency again.
Figure 7-41 Overcurrent stall prevention
Overcurrent stall
prevention level
150%
Overcurrent stall
prevention during
acceleration
t
t
Output current
Overcurrent stall
prevention during
constant-speed running
Overcurrent stall
prevention during
deceleration
Output frequency
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