Burkert Type 8635 - Manual (Page 105)

8635 - 103
O
PERATING THE
P
ROCESS
C
ONTROLLER
(S/HART)
The setpoint step for parameter optimization must always be entered via the operating
keypad. This also applies when, on configuration, the function
P.CONTRL / P.CO SETP /
SETP EXT (setpoint setting via analog input) was specified. In this case, the external
setpoint setting is reactivated only after completion of process tune.
NOTE
Self-optimization of the process controller now runs automatically. The display shows a rotating bar and
the message
P.TUNE. After completion of process tune, the device is in the AUTOMATIC mode. The
process controller works from this point on with the optimized PID parameters and controls to the
current, internal or external setpoint
SP.
To execute a new optimization cycle, repeat Steps ... .
Process tune in the operating menu of the SIDE Control remains activated, so that process
control is carried out with the setpoint modulator (filter) in order to reduce unwanted, non-
linear effects. If control is to be carried out without the setpoint modulator, process tune in
the operating menu must be deactivated:
P.CONTRL / P.CO TUNE / P.TUN D’ACT.
NOTE