Lenze 8400 TopLine - Manual (Page 1554)

19 Function library
19.1 Function blocks
1554
Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
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L_MFail inputs Function
nAdapt_a Dynamic adaptation of the proportional gain of the DC-bus voltage controller.
• Input not interconnected  Adaptation = 0 %.
nConst_a Proportional gain of the DC-bus voltage controller
• Input with nPos100_a constant interconnected  proportional gain = 100 %.
nDCSet_a Voltage setpoint on which the DC-bus voltage is to be kept.
• The voltage setpoint has to be set in the "free parameter" C00476/2 .
nNset_a Speed setpoint path (output: nNOut_a)
bFault Activating the mains failure control
 Procedure of the mains failure control ( 1551)
bReset Reset mains failure control
• The free bFreeIn2 input of the application block used in the example can be e.g.
connected to a digital input on I/O level.
nThreshold_a Restart threshold
• The restart threshold (at first approx 2 %) has to be set in the "free parameter" C00476/3 .
nNAct_a Comparison value for the restart threshold
• Comparison value is the actual speed value
nSet_a Speed starting point for the deceleration
• Speed starting point is the actual speed value
nDCVoltAct_a Actual DC-bus voltage