Cashco Siemens PS2 I/P - Manual (Page 94)

Operation
94
SIPART PS2 Manual
A5E00074631-01
Table 3-2, page 94 shows which events can activate the fault message
output, how the parameters must be set for this event to be monitored,
when the fault message disappears again and where the possible
causes of the fault lie.
In automatic and manual operation response of the fault message
output on the display shows which is the fault message trigger. The two
digits at the bottom left indicate the corresponding error code. If several
triggers occur at the same time, these are displayed cyclically. The
instrument status which also contains all fault messages can be called
via HART with the command #48.
Error
code
Event Parameter
setting
Fault message dis-
appears when ...
Possible causes
1 Remaining con-
trol error
always active ... the control error has
disappeared again
Compressed air missing,
actuator fault, valve fault
(e.g. blockade).
2 Instrument not
in automatic
mode
47. FCT= nA
or = nAB
... the instrument is
brought into automatic
mode
The instrument is configured
or is in manual operation.
3 Digital input DI1
or DI2 active
47. FCT= nAB
and digital function
BIN1 or BIN2 to
”on”
... the digital input is no
longer activated
The contact connected to
the binary input has become
active (e.g. stuffing box
monitoring, excess
pressure, temperature
switch).
4 Limit value
Number of stro-
kes exceeded
50. STRK¸OFF ... the stroke counter is
reset or the limit value
increased
The total distance traveled
by the actuator exceeded
the set limit value.
5 Limit value
change of di-
rection excee-
ded
51. DCHG¸OFF ... the change of direction
counter is reset or the limit
value increased
The number of changes of
direction exceeded the set
limit value.
6 Limit value bot-
tom hard stop
exceeded
52. ZERO¸OFF
39.YCLS = do or
up do
... the deviation of the stop
disappears or the
instrument is re--initialized
Wear of the valve seat, de-
posits or foreign bodies in
the valve seat, mechanical
maladjustment, slip clutch
maladjusted.
7 Limit value
top hard stop
exceeded
53. OPEN¸OFF
39 YCLS = up or
up do
... the deviation of the stop
disappears or the
instrument is re--initialized
Wear of the valve seat, de-
posits or foreign bodies in
the valve seat, mechanical
maladjustment, slip clutch
maladjusted.
8 Limit value
dead zone
adaptation ex-
ceeded
53. OPEN¸OFF
34.DEBA = Auto
... the limit value is
dropped below again
Increased stuffing box
friction, mechanical lots of
the position feedback
Table 3-2 Events which can activate the fault message output