Endress+Hauser Micropilot FMR56, Руководство по эксплуатации

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Micropilot FMR56, FMR57 FOUNDATION Fieldbus Operating menu
Hauser 153
"Safety settings" submenu
Navigation  Setup → Advanced setup → Safety sett.
Output echo lost 
Navigation  Setup → Advanced setup → Safety sett. → Output echo lost
Description Define the behavior of the output signal in case of a lost echo.
Selection • Last valid value
• Ramp at echo lost
• Value echo lost
• Alarm
Factory setting Last valid value
Additional information Meaning of the options
• Last valid value
The last valid value is kept in the case of a lost echo.
• Ramp at echo lost
In the case of a lost echo the output value is continously shifted towards 0% or 100%.
The slope of the ramp is defined in the Ramp at echo lost parameter (→  154).
• Value echo lost
In the case of a lost echo the output assumes the value defined in the Value echo lost
parameter (→  153).
• Alarm
In the case of a lost echo the device generates an alarm; see the Failure mode parameter
Value echo lost 
Navigation  Setup → Advanced setup → Safety sett. → Value echo lost
Prerequisite Output echo lost (→  153) = Value echo lost
Description Define output value in case of a lost echo.
User entry 0 to 200 000.0 %
Factory setting 0.0 %
Additional information Use the unit which has been defined for the measured value output:
• without linearization: Level unit (→  140)
• with linearization: Unit after linearization (→  147)