Shenzhen Hpmont Technology Co., Ltd Chapter 6 Function Introduction
HD30 Series Inverters User Manual ―113―
Protection of stall overvoltage (F19.18
F19.19)
During deceleration, the motor’s decelerate rate may be lower than that of the inverter’s output
frequency due to the load inertia. At this time, the motor will feed the energy back to the inverter,
resulting in voltage rise on the inverter's DC bus. If no measures taken, the inverter will trip due to
overvoltage.
F19.18 Protection of stall overvoltage 0,1
0
0: Disabled. The dynamic braking unit and braking resistor are recommended to be installed if F19.18 is
set to 0.
1: Enabled. During the deceleration, the inverter detects the bus voltage and compares it with the stall
overvoltage point defined by F19.18.
• If the detecting bus voltage exceeds F19.19 (stall overvoltage point), the inverter will stop reducing
its output frequency. When detect again, if the bus voltage becomes lower than F19.19, the
deceleration continues.
Note: If stall overvoltage lasts more than 1 minute, the inverter will alarm fault (E0007). And at this
time, the inverter stops output.
F19.19 Stall overvoltage point 0
1200V
220V inverter: 390V
380V inverter: 740V
660V inverter: 1150V
If the stall overvoltage point is set a little lower, deceleration time should be comparatively longer.
6
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