Scaling of phintx-out, Function library, Function blocks – Lenze EVS9332xP User Manual

Page 271

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Function library

Function blocks

3.5.53

Phase integrator (PHINT)

3−243

l

EDSVS9332P−EXT DE 2.0

3.5.53.2

Scaling of PHINTx−OUT

Mathematic description of PHINTx−OUT:

PHINTx–OUT[inc]

+ PHINTx–IN[rpm] @ t[s] @ 65536[incńUmdr.]

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.

l

Given values:

– PHINTx−IN = 1000 rpm

– t = 10 s

– Start value of the integrator = 0

l

Solution:

– Conversion of PHINTx−IN:

1000 rpm

+ 1000 rev.

60 s

– Calculation of PHINTx−OUT:

PHINTx

* OUT + 1000 rev.

60 s

@ 10 s @ 65536 inc

rev.

+ 10922666 inc

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