Scaling Of Phintx-Out - Lenze 9300 System Manual

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Function library
7.5.70.2

Scaling of PHINTx-OUT

Mathematic description of PHINTx-OUT:
t = integration time
Example:
You want to determine the count of the integrator with a certain speed at the input and a certain
integration time.
•
Given values:
– PHINTx-IN = 1000 rpm
– t = 10 s
– Start value of the integrator = 0
•
Solution:
– Conversion of PHINTx-IN:
– Calculation of PHINTx-OUT:
7-252
PHINTx–OUT[inc] = PHINTx–IN[rpm] ⋅ t[s] ⋅ 65536[inc∕Umdr.]
1000 rpm = 1000 rev.
60 s
PHINTx − OUT = 1000 rev. ⋅ 10 s ⋅ 65536 inc
60 s
EDSVS9332P-D21 EN 3.0
= 10922666 inc
rev.
L