KROHNE OPTISOUND 3000 Series EN - Manual (Page 23)

Current output
Output mode
4 … 20 mA
20 … 4 mA
Failure mode 1)
Hold value
20.5 mA
22.0 mA
<3.6 mA
Min. current 2)
3.8 mA
4 mA
The values in bolt font represent the data of the factory
setting.
In HART multidrop mode, the current is constantly 4 mA.
This value does not change even in case of failure.
Current output
Output mode 4-20 mA
Failure mode: 22mA
Min-current 3.8mA
HART offers standard and multidrop mode 3) . In multi-
drop mode up to 15 sensors can be operated on one
two-wire cable.
In this menu item you determine the HART mode and
enter the address with multidrop.
HART mode
standard
Address 0
1) Value of the current output in case of failure, e.g. if no valid
measured value is delivered.
2) The current never falls below this value during operation.
3) In multidrop mode, the 4 … 20 mA signal of the HART sensor is
switched off. The sensor consumes a constant current of 4 mA.
The meas. signal is only transmitted as digital HART signal.
HART mode
Indicating/adjustment module for OPTISOUND sensors 23
Set up
30603
-EN
-050401