User guide

Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05 635
5 Function blocks
5.206 L_WndCalcLength - length calculation
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Outputs
Parameters
dwReferenceLineSpeed
DWORD
Maximum material speed in [cm/min]
• 2500 cm/min ≡ 25.00 m/min
• Internal limitation to 2000 m/min
dnLineSpeed_n
DINT
Material speed setpoint in [%]
• 100 % ≡ maximum material speed (dwReferenceLineSpeed)
dwRefLength
DWORD
The length to be winded up during a winding process in [mm]
• 1000 mm ≡ 1 m; 1000000 mm ≡ 1km
• Internal limitation to 2000 km
dnLengthRetain
DINT
Input for reading in the current length after mains switching:
1.For this, connect the output dnLength_n with a retain variable.
2.Then connect the retain variable with this input.
Identifier/data type Value/meaning
dnLength
DINT
Current length in [mm]
dwLengthToRef
DWORD
Residual length until reaching the reference value in [mm]
• Internal limitation to 2000 km
dwTimeToRef
DWORD
Residual runtime until reaching the reference value in [s]
• The calculation depends on C04840, either on the basis of the material speed set-
point or the maximum material speed.
• This value is only calculated at every 2. call of the FB (alternating with
dwStopLength).
dwStopLength
DWORD
Change in length during the braking phase in [mm]
• This value is only calculated at every 2. call of the FB (alternating with
dwTimeToRef).
bStartDec
BOOL
Control signal for starting the braking process
TRUE Pre-switch-off length reached.
bRefReached
BOOL
Control signal for triggering the limit stop
TRUE Reference length dwRefLength reached.
Parameter Possible settings Info
C04840 Reference value = Stop length of reference value
• Reference value for the rated de-
celeration time dwNominalTif
• Initialisation: maximum material
speed
0 Maximum material speed
(dwReferenceLineSpeed)
1 Material speed setpoint
(dnLineSpeed_n)
Identifier/data type Information/possible settings