Siemens PROFIBUS PA SIPART PS2 Manual page 116

Operation
FS ---- ---- x
FS nn x
MM nn x
LO nn x
OS ---- x
oFL / 127.9 x
EXSTP x
EX UP x
EXDWN x
114
Meaning/Cause
x Fail safe (air discharge
valve opened). Possible
causes
No communication
S
with master
Target mode set to
S
"MA"
Master sending incor-
S
rect status
x Set to parameterized fail
safe setting (cause: see
above)
x Positioner is in "manual
mode"
x Positioner is in "local over-
ride mode"
x Positioner is in "out of ser-
vice mode"
x x Display range exceeded.
Possible causes:
Slip clutch or
S
Transmission ratio se-
S
lector switch changed
or
Positioner installed wi-
S
thout reinitialization,
having previously been
fitted to another drive
x Actuator stopped by bi-
nary input
x Actuator moved by binary
input to upper stop
x Actuator moved by binary
input to lower stop
Actions
Correct station address
S
Set target mode to "au-
S
tomatic" with class 2
master
Send status "0x80"
S
(good)
see above
S
Set target mode to "au-
S
tomatic" with class 2
master
Send status "0x80"
S
(good)
Set target mode to "au-
S
tomatic" with class 2
master
Send status "0x80"
S
(good)
Set target mode to "au-
S
tomatic" with class 2
master
Send status "0x80"
S
(good)
Adjust slip clutch so that
S
when moving the drive
the actual value display
remains within 0.0 to
100.0 or
Change transmission
S
selector switch or
Carry out factory setting
S
(preset) and initialization
SIPART PS2 PA Manual
A5E00127926-03