Lenze DDS Function library 9300 Servo - Manual (Page 16)

Function block library Lenze9300Servo.lib
Special functions
2.1.2 Supply−failure control (L_MFAIL)
2−6
L
Lenze9300Servo.lib EN 1.1
2.1.2 Supply−failure control (L_MFAIL)
If the supply voltage via L1, L2, L3 or +UG, −UG fails, then the drive (drive network) can be decelerated
(braked) in a controlled manner.
Without this function, the drive (drive network) would coast down.
MCTRL_nDCVolt_a
L_MFAIL
nVp nAdapt_a
nConst_a
nTi
nDCSet_a
nNSet_a
bFault_b
bReset_b
nThreshold_a
nNAct_a
nSet_a
CTRL
0
1
nNOut_a
wRetriggerTime
bStatus_b
bIReset_b
nTn
Abb. 2−6 Supply−failure control (L_MFAIL)
VariableName DataType SignalType VariableType Note
nAdapt_a Integer analog VAR_INPUT Dynamic adjustment of the proportional gain of the
U
Gsetp
−control in [%] of nVp . (16384 º 100 %)
nConst_a Integer analog VAR_INPUT Proportional gain of the U
Gsetp
controller in [%]
from nVp . (16384 º 100 %)
nDcSet_a Integer analog VAR_INPUT Voltage setpoint at which the DC bus voltage is to be
maintained. (1000 V
º 100 %)
nNSet_a Integer analog VAR_INPUT Speed setpoint in [%] of C0011
(C0011
º 100 % º 16384)
bFault_b Bool binary VAR_INPUT TRUE = activates the supply−failure control
bReset_b Bool binary VAR_INPUT TRUE = reset
nThreshold_a Integer analog VAR_INPUT Restart threshold in [%] of C0011
(C0011
º 100 % º 16384)
nNAct_a Integer analog VAR_INPUT Comparison value for the restart threshold in [%] of
C0011
nSet_a Integer analog VAR_INPUT Speed starting point for run−down/deceleration in [%]
of C0011
(C0011
º 100 % º 16384)
nNOut_a Integer analog VAR_OUTPUT Speed setpoint in [%] of C0011
(C0011
º 100 % º 16384)
bStatus_b Bool binary VAR_OUTPUT TRUE = supply−failure control is active
bIReset_b Bool binary VAR_OUTPUT TRUE = supply−failure control active, the drive is
braking
nVp Integer − VAR CONSTANT RETAIN Gain
nTn Integer − VAR CONSTANT RETAIN Integral−action time T
nTi Integer − VAR CONSTANT RETAIN Acceleration time
wRetriggerTime Unsigned
Integer
− VAR CONSTANT RETAIN Retrigger time
Parameter codes of the instances
VariableName L_MFAIL1 SettingRange Lenze
nVp C0980 0.001 ... 31.000 0.500
nTn C0981 20 ... 2000 ms 100
nTi C0982 0.001 ... 16.000 s 2.000
wRetriggerTime C0983 0.001 ... 60.000 s 1.000