Siemens 7ML5431 Operating Instructions Manual page 146

Parameter reference
Service Schedule (4.4.)
Note
• Four sets of parameters allow you to monitor the Device/Sensor Lifetimes and set up
Maintenance/Service schedules, based on operating hours instead of a calendar-based
schedule. See also Remaining Device Lifetime (4.2.), Remaining Sensor Lifetime (4.3.),
and Calibration Schedule (4.5.).
• Performing a reset to Factory Defaults will reset all the Maintenance Schedule
parameters to their factory defaults.
• The device operates in years. To view Service Interval parameters in hours or days (via
SIMATIC PDM only) see Service interval (4.4.1.).
The device tracks service intervals based on operating hours and monitors the predicted
lifetime to the next service. You can modify the Total Service Interval, set schedules for
maintenance reminders, and acknowledge them.
The maintenance warnings and reminders are communicated to the end user through status
information. This information can be integrated into any Asset Management system. For
optimal use, we recommend that you use SIMATIC PCS7 Asset Management Software in
conjunction with SIMATIC PDM.
To access these parameters via SIMATIC PDM:
● Open the menu Device – Maintenance and select the Service Schedule tab.
● After modifying values/units as required, click on Write to accept the change, and Read to
view the effect of the change.
● Click on Service Performed to restart the timer and clear any fault messages.
Time Units
Options
Selectable only via SIMATIC PDM.
a)
146
Hours; days; years
a)
Default: years
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG