Lenze DDS Function library Drive - Manual (Page 57)

Function library LenzeDrive.lib
Processing of phase−angle signals
2.4.7 Integration (L_PHINTK)
2−47
L
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
t
dnOut_p
t
(+) 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.