Lenze DDS Function library Drive Bedienungsanleitung PDF herunterladen (Seite 56)

2.4.7 Integration (L_PHINTK)

Function library LenzeDrive.lib

Processing of phase−angle signals

2−46

LenzeDrive.lib EN 1.7

2.4.7.1 Constant input value

3 functions are available, that you can select with byMode.

byMode = 0

The input bLoad_b is level−triggered (TRUE−level).

 bLoad_b = TRUE

– The integrator is loaded with the value at dnSet_p.

– The FB switches bStatus_b = FALSE.

byMode = 1

The input bLoad_b is edge−triggered (FALSE−TRUE transition).

 bLoad_b = FALSE−TRUE edge/transition

– The integrator is loaded with the value at dnSet_p and immediately integrated from then on.

– The FB switches bStatus_b= FALSE.

ut_p

-32767 revolutions

(-) dnCmp

(+) dnCmp

+32767 revolutions

bStatus_b

Fig. 2−57 Function of L_PHINTK with constant input value

(+) Variable with positive value

(−) Variable with negative value

 A positive value at nIn_v is incremented

(the counter value is increased at every call of the function).

 A negative value 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 +32767 encoder revolutions (corresponds to

+2147483647 inc):

– There is an overflow, and counting continues at the value −32768 encoder turns.

– Switches bStatus_b = TRUE, when a positive preset value is reached at dnCmp.

 If the count falls below the value of −32768 encoder revolutions (corresponds to

−2147483648 inc):

– There is an overflow, and counting continues at the value +32767 encoder turns.

– Switches bStatus_b = TRUE, when a negative preset value is reached at dnCmp.

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Lenze DDS Function library Drive Bedienungsanleitung Seite 56