Siemens SIPART DR21

5 Operation
5.4 Configuration modes
Manual
162
SIPART DR21
C73000-B7476-C143-08
D Error messages of the adaptation procedure
yBL direction-dependent blocking mode via the control signals ⇒
n.ddc tracking or DCC mode by control signals ⇒
ovEr > 10 % overshoot of the transient function
Shot
⇒ adaptation of sufficient quality is possible
FASt because of too small a line time constant no
adaptation of sufficient quality is possible
P.oFL x outside the measuring span 0 to 100 % ⇒
n.End at 67 % tU full scale value not reached yet
⇒ tU selected too small
⇒ loop cannot reach full scale value,
e.g. integrally active line
⇒ transient recovery time t
95
> 12 h
SMAL x after 50 % tU still within starting band
⇒ tU selected too small
⇒ y step too small
PASS step response in wrong direction within
30 % tU
⇒ Change controller direction of effect (S46)
⇒ control loop undershoot (all pass loop),
all-pass loops not defined among
loop models
y .OFL y outside the manipulated variable limits Y
A
,Y
E
⇒
(see online parameters)
nody after expiry of the step command the y step
in the S- controller is not yet executed correctly ⇒
Error messages Explanation
digital
x/w display
y
Manual
y too big or too small
Check position feedback and drive of the final
control element
y
Manual
y too big or too small
(transient recovery time t
95
<5s)
cancel mode of
operation
-10 0
y
%tU
StAt not stable at 10 % tU after
Start of adaptation
⇒ wait and restart adaptation
-10 0
y
%tU
30
100
x, y
x, y
100
-10 0
y
%tU
50
100
x, y
-10 0
y
%tU
67
100
x, y
-10 0
y
%tU
67
100
x, y
Si safety operation via the control signals ⇒
Table 5-3 Adaptation error messages