Lenze DDS Function library 9300 Servo Manuel d'utilisateur télécharger pdf (Page 16)

Function block library Lenze9300Servo.lib

Special functions

2.1.2 Supply−failure control (L_MFAIL)

2−6

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_nDC Volt_a

L_MFAIL

nVp

nAdapt_a

nConst_a

nTi

nDCSet_a

nNSet_a

bFault_b

bReset_b

nThreshold_a

nNAct_a

nSet_a

CTRL

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

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

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 28 29

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Lenze DDS Function library 9300 Servo Manuel d'utilisateur Page 16

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