Siemens Sitrans LR400 Instruction Manual page 61

6. Maintenance Settings
Use these parameters to set up schedules for calibration and maintenance. The device
will track itself based on operating hours, instead of a calendar-based schedule, and will
monitor its predicted lifetime.
The maintenance warnings and alarms are communicated to the end user through either
the status or condensed status bytes. 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.
6.1 Remaining Device Lifetime
Performing a reset to Factory Defaults will reset all Maintenance
Note:
parameters to their factory defaults.
The Remaining Device/Sensor Lifetime parameters set up schedules for calibration and
maintenance.
To access these parameters via SIMATIC PDM open the menu Device – Maintenance
and select the Remaining Device Lifetime tab.
6.1.1 Total Device Operating Time
Read only. Displays the amount of time the device has been operating.
6.1.2 Remaining Device Lifetime
Read only. The sum of Total Expected Device Life less Total Device Operating Time.
6.1.3 Maintenance Required Limit
If the Total Expected Device Life less Total Device Operating Time is equal to or less
than this limit, a Maintenance Required status is generated.
Values
To modify the value via SIMATIC PDM:
a. Modify limit values as required.
b. See 6.1.5 Maintenance Alert Activation to set Alert Activation options.
1.
Data for this parameter must be entered in seconds on the device.
7ML19985FH06 SITRANS LR400 (7ML5421) – INSTRUCTION MANUAL
1
Range: 0 to 20 years
Default: 0.164 years
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