Lenze DDS Function library Drive Manual do Utilizador descarregar pdf (Página 57)

Function library LenzeDrive.lib

Processing of phase−angle signals

2.4.7 Integration (L_PHINTK)

2−47

LenzeDrive.lib EN 1.7

2.4.7.2 Input value with change of sign

byMode = 2

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.

bStatus_b

dnOut_p

(+) dnCmp

(-) dnCmp



Fig. 2−58 Function of L_PHINTK with change of sign for the input value

(+) Variable with positive value

(−) Variable with negative value

 Change of sign for the value at nIn_v

 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 value exceeds a preset positive value at dnCmp:

– The count value is reduced by the value of dnCmp.

– Switches bStatus_b = TRUE for the time of one cycle.

 If the count value goes below a preset negative value in dnCmp:

– The count value is increased by the value of dnCmp.

– Switches bStatus_b = TRUE for the time of one cycle.

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Lenze DDS Function library Drive Manual do Utilizador Página 57