Lenze DDS Function library Drive Manual de usuario descargar pdf (Pagina 53)

Function library LenzeDrive.lib

Processing of phase−angle signals

2.4.6 Integration (L_PHINT)

2−43

LenzeDrive.lib EN 1.7

2.4.6 Integration (L_PHINT)

This FB can integrate a speed or a velocity to a phase−angle (path/distance). The integrator can

accept max. ±32000 encoder revolutions.

n I n _ v

b R e s e t _ b

d n O u t _ p

b F a i l _ b

L _ P H I N T

± 3 2 0 0 0

R e v o l u t i o n

I n t e r v a l T i m e

T A S K

Fig. 2−54 Integration (L_PHINT)

VariableName DataType SignalType VariableType Note

nIn_v Integer velocity VAR_INPUT Actual speed value: 16384  15000 rpm

bReset_b Bool binary VAR_INPUT TRUE sets the phase−angle integrator = 0 and

bFail_b = FALSE .

dnOut_p Double−integer position VAR_OUTPUT 65536 inc = 1 encoder revolution (Overflow is possible.)

bFail_b Bool binary VAR_OUTPUT TRUE = Overflow occurred.

Range of functions

 Constant input value

 Calculation of the output signal

2.4.6.1 Constant input value

ut_p

-32767 revolutions

-32000 revolutions

+32000 revolutions

+32767 revolutions

bFail_b

Fig. 2−55 Function of L_PHINT with constant input value

 A positive signal at nIn_v is incremented (the counter value is increased at every call of the

function).

 A negative signal at nIn_v is decremented (the counter value is decreased at every call of the

function).

 dnOut_p produces the count value of the bipolar integrator.

 If the count exceeds the value of +32000 encoder revolutions, then

bFail_b switches = TRUE.

 If the count exceeds the value of +32767 encoder revolutions (corresponds to +2147483647

inc.) there is an overflow, and the count procedure continues from a value of −32768 encoder

turns.

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Lenze DDS Function library Drive Manual de usuario Pagina 53

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