Inovance MD500T75G - Page 155

MD500 User Manual 7. Description of Parameters
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7.5.4 Overvoltage Stall Prevention and Braking Unit Action Voltage
When the bus voltage exceeds the value set F3-22, it indicates that the motor becomes an electric generator (motor speed larger
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(dissipates the regenerative energy).
Using this function will increase the deceleration time and avoid overvoltage trip. If the actual deceleration time cannot satisfy the
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Figure 7-43 Overvoltage stall prevention
Time
Time
Output
frequency
Time
Time
Overvoltage stall prevention
Overvoltage stall prevention level
Time
Time
Overvoltage stall prevention
during acceleration
Overvoltage stall prevention
during constant-speed running
Overvoltage stall prevention
during deceleration
Bus voltage
Bus voltage Bus voltage
Output
frequency
Output
frequency
Overvoltage stall prevention level
Overvoltage stall prevention level
Overvoltage stall prevention Overvoltage stall prevention
Function Code Parameter Name Setting Range Default
F3-22 Overvoltage stall
prevention voltage
650 to 800 V 760 V
F3-23 Overvoltage stall
prevention selection
0: Disabled
1: Enabled
1
F3-24 Overvoltage stall prevention
frequency gain
0 to 100 30
F3-25 Overvoltage stall
prevention voltage gain
0 to 100 30
F3-26 Overvoltage stall prevention
max. frequency
0 to 50 Hz 5 Hz
) Braking unit action voltage 700 to 800 V 780 V
F3-10 9)RYHUH[FLWDWLRQJDLQ 0 to 200 64
F3-11 9)RVFLOODWLRQVXSSUHVVLRQJDLQ 0 to 100 40
Note
When using regen resistor, braking unit or energy feedback unit, pay attention to the following aspects:
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ƕ Set F3-23 (overvoltage stall prevention selection) to 0 (disabled). Otherwise, the deceleration time may be become longer.
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