Siemens sitrans LR 400 Instruction Manual And Users Manual page 58

Current limiting
The URV is always at 20 mA. If you set the current limit to a higher value, you can have the
measured values output outside the measuring range (up to approx. 115%).
4.3.5: Error Signal (F = 3.6 mA)
Current value of the error signal
Value
In the event of a fault the device applies the current defined here to the analog output.
You can choose between 3.6 mA, 22 mA, 24 mA, Hold 10 s, Hold 1 min, Hold 2 min, Hold 3
min and Hold continuously.
When the Hold... values are selected, the device outputs the last valid value until the set
time has run out or the fault has been eliminated. If the fault persists after the set time
runs out, the analog output switches to an error signal of 3.6 mA.
Note:
A fault is different from a loss of echo which indicates a failsafe condition.
Page 55
current
3.6 mA
22.0 mA
24.0 mA
Hold 10 s
Hold 1 min
Hold 2 min
Hold 3 min
Hold continuously
SITRANS LR 400 – INSTRUCTION MANUAL
22.5 mA
setting
range
20.0 mA
measured value
7ML19985FH04