Siemens SITRANS FX330 Operating Instructions Manual page 76

OPERATION
6
Function
C2 Output
C2.1 Current Output
C2.1.1 Current Out. Meas.
C2.1.2 0% Range
C2.1.3 100% Range
C2.1.4 Lower Ext. Range
C2.1.5 Upper Ext. Range
C2.1.6 Error Function
C2.1.7 Low Error Current
C2.1.8 High Error Current
C2.1.9 Trimming
C2.1.9.2 4mA Trimming
C2.1.9.5 20mA Trimming
C2.2 Binary Output
C2.2.1 Function
C2.2.2 Pulse Output
C2.2.2.1 Measurement
C2.2.2.2 Value p. Pulse
C2.2.2.3 Pulse Width
C2.2.2.4 100% Pulse Rate
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Setting / Description
2-wire current output 4..20 mA (for details refer to
Determination of measurement variable for current output. Measurement variable for
current output is pre-set according to application data.
Select: Volume Flow / Norm. Volume Flow / Mass Flow / Density / Temperature1 /
Pressure / Vortex Frequency / Velocity / Gross Power / Net Power / FAD
The latter three measurement variables are just available if the respective meter type
option was activated.
The set value represents the 4 mA value of the current output. Usually 0% of flow is set
as 4 mA, but it is also possible to assign higher flow values than 4 mA.
The set value represents the 20 mA value of the current output. Usually 100% of flow is
set as 20 mA, but it is also possible to assign lower flow values than 20 mA.
Minimum limit of current value. Pre-set value is 4 mA.
Enter: 3.8...4 mA
Condition for value < 4 mA: Measurement value at 4 mA must not be smaller or equal to
0%.
Maximum limit of current value. Pre-set value is 20 mA.
Enter: 20...20.5 mA
Condition for value > 20 mA: Measurement value at 20 mA must not be greater or equal
to 100%.
This function defines current output signal in case of an error detection.
Select:
- Off: No error current signal is sent.
- High: Error current signal as defined in C2.1.7 is sent.
- Low: Error current signal as defined in C2.1.8 is sent.
- Hold: Last current value is held.
Enter: 3.5...3.6 mA, available if "Error Function = Low"
Enter: 21...21.5 mA, available if "Error Function = High"
This function enables to trim the current output.
Trimming is started by entering the menu.
Trimming of 4 mA point.
Enter measured value for 4 mA point. Reset to 4 mA restores the factory calibration.
Trimming of 20 mA point.
Enter measured value for 20 mA point. Reset to 20 mA restores the factory calibration.
For possible functions of the binary output refer to
Select: Off / Pulse / Frequency / Status / Limit Switch
Unless otherwise ordered the binary output is inactive.
Only available if "Pulse" is selected in C2.2.1.
Select: Volume Flow / Mass Flow / Norm. Volume Flow / Gross Power /
Net Power
Gross/net power is just available for non-standard meter types measuring steam or
water.
Availability of selection depending on meter type and medium configuration.
Define value per pulse in unit according to measurement variable selection.
Define pulse width in ms.
Define 100% pulse rate in Hz.
www.siemens.com/flow
SITRANS FX330
Technical data
on page 97)
Binary output
on page 39
05/2016 - A5E36751269-AA