Burkert 8285, Instruction Manual

Page: 52 / 288

52
8285
NAMUR signals: Current outputs
Behavior during messages: Function check, 22 mA signal
Behavior during messages
Output current
[mA]
“Fixed (22 mA)”
Function
check
22
4
“Last usable value”
Function
check
Depending on the parameter setting
(“Messages”), the current outputs switch to:
Currently measured value
Last measured value (HOLD function)
Fixed value (22 mA)
In the case of a fault a 22 mA signal can be
generated for the selected process variable
(1st primary value).
•
•
•
Function
check
“Current meas.”
Behavior during messages (Administrator)
OK
19.0 °C
7.00 pH
22mA message
Abort
Function check
Fixed 22 mA
Current meas.
Last usable value
As delivered, a “Warning” (maintenance request) message is generated
when the current range is exceeded (< 3.8 mA or > 20.5 mA).
This setting can be changed in the Parameter setting menu of the respective
measuring module at “Messages”.
To generate a “Failure” message, the limit value monitoring must be set to
“Variable limits”:
Parameter setting - <measuring module> - Messages - Variable limits -
Failure limit …
Enter the same values for the failure limits as for the current output:
Parameter setting - Module BASE - Output current - Variable Start / End.
Current outputs: Behavior during messages