'51.Fsty' Safety Position - Siemens SIPART PS2 Operating Instructions Manual

Figure 8-5
Figure 8-6
The factory setting is 'OFF'.
See also
Monitoring the position average value 'P.\\PAVG' (Page 185)
8.3.2.23

'51.FSTY' Safety position

Possible settings:
Purpose:
Description:
Fail in Place
Factory setting:
SIPART PS2 with PROFIBUS PA
Operating Instructions, 05/2019, A5E00127926-AC
Display of a threshold 2 error message with two columns (maintenance demanded)
Display of a threshold 3 error message with three columns (maintenance alarm)
● FSVL
● FSSP
● FSAC
Use this parameter to move the actuator to a defined safety position
when communication fails.
Three settings are available:
● FSVL:
the actuator is controlled using the configured safety setpoint.
This value also becomes effective following failure of the
auxiliary power supply.
● FSSP:
the actuator is controlled using the last effective setpoint.
● FSAC:
the positioner responds as described in "Reaction to failure of
auxiliary powers (Page 94)."
The following must be observed when using the "Fail in Place" func‐
tion:
The "51.FSTY" parameter must be set to "FSSP" so that the posi‐
tioner retains the current position even following switching on again.
FSAC
Parameter assignment
8.3 Description of parameters
161