view user manual (pdf) - dyna-flo control valves

Operation
8 Monitoring of the dead zone adaptation
If the dead zone increases unproportionally in operation in automatic
adaptation of the dead zone (parameter DEBA = Auto) this points to an
error in the system (e.g. a marked increase in stuffing box friction, play
in the displacement detection, leakage). Therefore a limit value can be
specified for this value (”54. DEBA”, limit value for dead zone
monitoring) which activates the fault message output when it is
exceeded.
4.6 Meanings of other display texts
Notes on the tables:
nn
stands for variable numerical values
Fault symbol
/ (slash): the texts to the left and right of the slash
flash alternately
Reports before initializing (first commissioning):
Upper
line
Lower
line
Meaning/Cause
Actions
CPU
START
x
x
Report after connecting the electrical
auxiliary power
P nnn.n x Potentiometer voltage for non-initialized
positioner (P manual mode) (Setting
actual value in % of measurement
range)
P------ x Measurement range exceeded, potentiometer
is in the inactive zone,
transmission ratio selector or effective
lever arm are not matched to the
travel
S· Wait
NOINI x Positioner not initialized S Start initialization
S Check using the ”+” and ”--” keys
whether the overall travel can be traversed
without ever ”P------” being displayed
S Perform initialization
S Set transmission ratio selector to 90
degrees, in particular for rotary actuators
S Match effective arm length for linear
actuators to measurement range
Messages during initialization:
Upper
line
Lower
line
Meaning/Cause
Actions
P---- x See above See above
RUN 1 x Initialization started, part 1 active S Wait
(direction of control action being determined)
RUN 2 x Initialization part 2 active
(travel check and determination of
the end stops)
S Wait
106
SIPART PS2 Manual
A5E00074631-03