Lenze 9400 - Manual (Page 272)

7 Braking operation
7.2 Monitoring
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Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
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7.2.4 DC bus overvoltage
If, due to a too high braking energy, the DC-bus voltage exceeds the overvoltage threshold which
results from the mains voltage setting in C00173 , the "Overvoltage in the DC bus" error message is
output and the response set in C00600 is activated (default setting: "Trouble").
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Note!
For hoist applications, the "Fault" response should be selected in C00600 (in combination
with an emergency stop via mechanical brakes).