Siemens SITRANS LR250 Instruction Manual page 85

2.4. Failsafe
2.4.1. Failsafe Timers
Sets the time to elapse in minutes since the last valid reading, before Failsafe
State activates
Values
The last valid reading is maintained until the Failsafe timer expires. After the
Note:
timer expires, the reading is set based on Failsafe Material Level (next page).
2.4.2. Failsafe Material Level
The material level to be reported when the Failsafe Timer expires.
Values
2.4.3. Failsafe Level
Defines a user-defined level to report when the Failsafe timer expires..
Values
Failsafe Material Level must be set to VALUE to use this value.
Note:
3. Diagnostics
3.1. Echo Profile
Allows you to request the current echo profile either via the handheld programmer,
or via SIMATIC PDM.
To request a profile via SIMATIC PDM:
a. Open the menu View – Echo Profile.
b. If desired, press Save.
c. To view the saved profile, open the menu View – Show Echo Profile.
To request a profile via the handheld programmer:
a. In PROGRAM mode, navigate to LEVEL METER >
DIAGNOSTICS > ECHO PROFILE.
b. Press Right ARROW
7ML19985JE01
Range: 0.00 to720 min.
Default: 100.0
HI: Use Maximum mA Limit as material level
LO: Use Minimum mA Limit as material level
* HOLD: Level remains at last reading
VALUE: User-selected value (defined in Failsafe Level
below)
Range: 3.6 mA to 22.6 mA
Default: 22.6 mA
to request a profile.
SITRANS LR250 (HART) – INSTRUCTION MANUAL
X
DIAGNOSTICS
3.2
FAULT RESET
ECHO PROFILE ECHO PROFILE
MEAS. VALUES
REMAIN DEV. LIFE
Page 81