KROHNE OPTISOUND 3010 C, Handbook

Page: 33 / 52

33
6 Set up with the display and adjustment module
OPTISOUND 3010 C • Four-wire 4 … 20 mA/HART
30504-EN-220310
Failure mode
1)
Hold value
20.5 mA
22 mA
< 3.6 mA
Min. current
2)
3.8 mA
4 mA
Max. current
3)
20 mA
20.5 mA
The values in bold 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
Characteristic: 4-20 mA
►
Failure mode: 22 mA
►
Min. current 3.8 mA
►
In this menu item you simulate a user-defined level or pressure value
via the current output. This allows you to test the signal path, e.g.
through connected indicating instruments or the input card of the
control system.
The following simulation variables are available:
•
Percent
•
Current
•
Pressure (with pressure transmitters)
•
Distance (with radar and guided radar (GWR))
With Profibus PA sensors, the selection of the simulated value is
made via the "Channel" in the menu " Basic adjustments ".
How to start the simulation:
1. Push
[OK]
2. Select the requested simulation variable with [->] and confirm
with [OK] .
3. Set the requested numerical value with [+] and [->] .
4. Push [OK]
The simulation is now running, with 4 … 20 mA/HART a current is
output and with Profibus PA or Foundation Fieldbus a digital value.
How to interrupt the simulation:
→
Push [ESC]
Information:
The simulation is automatically terminated 10 minutes after the last
pressing of a key.
Service - Simulation
1)
Value of the current output in case of failure, e.g. if no valid measured value is
delivered.
2)
This value is not underrun during operation.
3)
This value is not exceeded during operation.