User's Manual

Parameter reference
SITRANS LR250 (FOUNDATION FIELDBUS)
168 Operating Instructions, 01/2014, A5E32221411-AB
Service Schedule (4.4.)
Note
•
Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly
stated.
•
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
AMS Device Manager only) see
Service Schedule (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 alarms are communicated to the end user through status
information. This information can be integrated into any Asset Management system.
To access these parameters via AMS Device Manager see
Service Schedule
under
Maintenance & Diagnostics (LTB) (Page 89).
Service Interval (4.4.1.)
User-configurable recommended time between product inspections.
Values
Units: years
Range: 0 to 20 years
Default: 1.0 year
Time Since Last Service (4.4.2.)
Time elapsed since last service. Can be reset to zero after performing a service.
To reset to zero:
● Via the handheld programmer, manually reset
Time Since Last Service (4.4.2.)
to zero.
Time Until Next Service (4.4.3.)
Read only.
Service Interval (4.4.1.)
less
Time Since Last Service (4.4.2.)
.