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Lenze 8400 - Limit Value Monitoring

Lenze 8400
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Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23 1272
17 Function library
17.1 Function blocks | L_CalcDiameter_1
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17.1.22.5 Limit value monitoring
wMinDiameter and wMaxDiameter serve to define the limit values for the given diameter values. If
they are reached/exceeded, the corresponding ouput (bDMaxLimit/bDminLimit) is set to TRUE.
The unfiltered diameter value dwOutDiameter and the filtered diameter value nDiameter_a are
limited.
The limit values are entered in [mm].
The hysteresis for resetting bDMaxLimit/bDminLimit is permanently set to 1 % of
wMaxDiameter.
For parameter setting of further FBs, the value in wMinDiameter with regard to wMaxDiameter
is provided via the nDMin_a output.
17.1.22.6 Converting diameter in 1/D
For evaluating the material speed with 1/D (speed-controlled winder), the reciprocal value of the
reel diameter is provided via nReziprDiameter_a.
This value refers to the limitation value wMinDiameter.
17.1.22.7 Physical state variables
The dwOutDiameter output provides the current diameter as physical quantity (1 LSB 1m).
nNReel_v outputs the winding speed which results from the nMotorSpeedAct_v motor speed and
the current (wGearNum/wGearDenom) gearbox factor.
For supporting further functions (e.g. a traversing control), the winding speed is integrated
additionally.
The angle of rotation is output via dnPos_p.
•By setting bResetPos to TRUE, the angle of rotation is reset.

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