Function library, Function blocks – Lenze EVS9332xS User Manual

Page 128

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Function library

Function blocks

3.2.27

Digital frequency processing (DFSET)

3−76

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EDSVS9332S−EXT EN 2.0

Function

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Setpoint conditioning with stretch and gearbox factor

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Processing of correction values

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Synchronising to zero track or touch probe (for resolver feedback touch probe only)

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Suppressing fault signals when synchronising via touch probe

3.2.27.1

Setpoint conditioning with stretch and gearbox factor

Stretch factor

The stretch factor defines the ratio between the drive in operation and its setpoint.

The evaluation is based on the setpoint at DFSET−IN. DFSET−POUT outputs the result.

DFSET−POUT

+ DFSET−IN @ DFSET−VP−DIV

C0533

The stretch factor results from numerator and denominator:

l

The numerator (DFSET−VP−DIV) can be variable (provided by an analog signal source) or a
constant value (provided by a code).

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The denominator must be set in C0533.

Gearbox factor

The gearbox factor defines the gearbox ratio of the drive. Enter the transmission ratio of the drive.

The evaluation is based on the setpoint at DFSET−IN multiplied by the stretch factor. DFSET−NOUT
outputs the result.

DFSET−NOUT

+ Reckfaktor @ DFSET−RAT−DIV

C0033

DFSET−NOUT

+ DFSET−IN @ DFSET−VP−DIV

C0533

@ DFSET−RAT−DIV

C0033

The gearbox factor results from numerator and denominator.

l

The numerator ca be variable (provided by an analog signal source) or a constant value
(provided by a code).

l

The denominator must be set in C0033.

)

Note!

With code C0530 you can deactivate the use of the gearbox factor and the
DFSET−N−TRIM values as the basis for the setpoint angle integrator. When
C0530 = 1, only the stretch factor is used for the calculation of the setpoint angle.

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