Siemens SIPART PS2 6DR50 Series, Manual

Page: 108 / 160

Operation
108
SIPART PS2 Manual
A5E00074631--06
Monitoring time for setting the fault messages
The set value(s) is/are for the specification of the time, within which the
positioner must have reached a compensated state. The corresponding
response threshold is preset with “49. LIM”.
If the set time is exceeded, the fault message output is set.
.
NOTE
If the tight closing function is activated, for parameter “49. LIM”, the
monitoring of the control deviation in each overrun direction (YCDO:
< 0 %, YCUP: > 100 %) is deactivated. This function is particularly
useful for valves with a soft seat. For the long-term monitoring of the
endstop positions, we recommend activating the parameters
“F. ZERO” and “G. OPEN”.
You can find more information on fault messages in chapter 4.5.3
Online Diagnostics.
Response threshold for fault messages
A value (%) can be set here for the permissible control deviation for
triggering the fault message.
If parameters 48 and 49 are set to “Auto” (factory setting), the fault
message is set if the short step zone is not reached within a certain
time. Within 5 to 95 % of the actuator travel, this time is 10 to 90 % of
10 times the initialization actuating time.
Preset
Establishes the factory setting and resets the initialization.
.
NOTE
After “Preset” the positioner needs to be re-initialized. All previously
determined maintenance parameters are deleted.
48. TIM
49. LIM
50.PRST