Lenze 8400 - Manual (Page 280)

5 Motor control (MCTRL)
5.13 Braking operation/brake energy management
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Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
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Fast discharge of the DC bus
Optionally, the bBrakeChopperOn control input of the "brake chopper master" can be used for a fast
discharge of the DC bus after switching off the supply voltage.
• For this purpose, the function block interconnection for the "brake chopper master" must be
adapted so that the bBrakeChopperOn control input of the LS_MotorInterface SB is connected
to a digital bus signal or hardware signal (e.g. digital input on HIGH level).
• Only the brake transistor of the "brake chopper master" is switched on with this function (max.
4 seconds, without interruption).