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ndu
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®
- Series VMM
Operation
Technical changes reserved
- 37 -
7.1.8
Current output
The CURRENT OUTPUT functional class in-
cludes the settings for the current outputs of
the display electronics.
The current output is generally assigned to
volume flow.
Current output 0/4 - 20 mA:
This function is intended for defining the op-
erating range for the current output.
The standard range from 4 to 21.6 mA uses
the measuring range up to 110 %.
The range from 4 to 20,5 mA is according to
the NAMUR-recommendation and uses the
measuring range up 104%.
For selecting the desired function within the
class please use the keys
and
.
After selecting the function
Current output
0/4 – 20 mA
, press the ENTER key to dis-
play the current setting:
Example:
One of the following settings can be chosen
(
"Selection window / make a selection",
p. 23):
•
0 – 21.6 mA
•
4 – 21.6 mA
•
4 – 20.5 mA
Current output alarm:
This function is intended for defining the
state for the current output when an alarm
state occurs. This information can be ana-
lyzed in the process management system.
For selecting the desired function within the
class please use the keys
and
.
After selecting the function
Current output
alarm
, press the ENTER key to display the
current setting:
Example:
Current output
[4–21.6] mA
Alarm
[ >22 mA ]
