Festo CMSH - Page 72

72
Festo — CMSH — 2021-10
Malfunctions
ID Message NAM
UR
1)
Possible cause Notes/remedies
1094 PST running
–
Current PST
–
Wait for completion of the
test.
–
PST Cancel manually if
necessary.
1095 PST: Test interval
exceeded
2)
–
Set tolerance for PST
interval exceeded
–
Start conditions for time-
triggered PST not met for
too long
–
Ensure start conditions for
PST at the desired time.
–
Adjust start conditions
for PST if necessary,
e.g. increase tolerances.
1096 PST: Movement or
test duration too long
2)
–
Increased friction with
drive or process valve
–
Low supply pressure
–
Increased resistance in the
compressed air lines
–
Wear of the positioner
–
Service the drive or
process valve and replace
if necessary.
–
Check supply pressure.
–
Check compressed air
lines.
–
Replace positioner.
1099 PST stopped: Too
long duration of
movement from x1 to
x2 compared to refer-
ence
2)
–
Increased friction with
drive or process valve
–
Low supply pressure
–
Increased resistance in the
compressed air lines
–
Wear of the positioner
–
Service the drive or
process valve and replace
if necessary.
–
Check supply pressure.
–
Check compressed air
lines.
–
Replace positioner.
1100 PST: Canceled by
external reset
–
PST aborted by user —
1102 PST stopped: Below
lower pressure limit
2)
–
Threshold value set for
lower pressure limit under-
shot
–
Difficult movement,
e.g. due to increased fric-
tion
–
Supply pressure too low
–
Check the mobility of the
drive or process valve.
–
Check supply pressure.
1103 PST stopped: Above
upper pressure limit
2)
–
Set threshold value for
upper pressure limit
exceeded
–
Difficult movement,
e.g. due to increased fric-
tion
–
Supply pressure too low
–
Check the mobility of the
drive or process valve.
–
Check supply pressure.