Lenze EVS 9300 series - Page 314

Function library
Function blocks
9.2.54 Phase integrator (PHINT)
9-188
L
EDSVS9332S-D11 EN 3.0
9.2.54.4 Scaling of PHINTx-OUT
Mathematical description of PHINTx-OUT:
PHIN
T
x − OU
T
[inc] = PHIN
T
x − IN[rpm] ⋅ t[s] ⋅ 65536[inc∕rev.]
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.
z Given values:
– PHINTx-IN = 1000 rpm
–t=10s
– Start value of the integrator = 0
z 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