West Control Solutions Pro-8 - Manual (Page 57)

8.2 Boost function
The boost function causes short-time increase of the set-point, e.g. for removing
"frozen" material rests from clogged die nozzles with hot-runner control.
If configured (
® ConF/ LOGI/ booS), the boost function can be started via di-
gital input di1/2/3, with the function key on the instrument front panel or via the
interface (OPTION).
The set-point increase around boost set-point PArA /SEtP/SP.bo remains ef-
fective as long as digital signal (di1/2 3, function key, interface) remains set. The
maximum permissible cycle time (boost time-out) is determined by parameter
PArA /SEtP/t.bo.
Unless reset after elapse of boost time I
t.bo, the boost function is finished by
the controller.
g
The boost function also works with
w
start-up circuit: PArA /SEtP/ SP.bo is added to W after elapse of start-up
holding time PArA /SEtP/ t.St.
w
Gradient function: set-point W is increased by PArA /SEtP/ SP.bo with
gradient PArA /SEtP/ r.SP.
Special functions
Pro-8
57 Boost function
W
Set-point Process value
t
W + SP.bo
SP.bo