11 Group PULSE/FREQUENCY OUTPUT Device Functions Proline t-mass 65
28 Endress+Hauser
11 Group PULSE/FREQUENCY OUTPUT
Function description PULSE/FREQUENCY OUTPUT
OPERATION MODE Use this function to configure the output as a pulse or frequency output.
The functions available in this function group vary, depending on which option you select
here.
Options:
FREQUENCY
PULSE
STATUS
Factory setting:
FREQUENCY
! Note!
The STATUS output is only available for the flexible I/O boards (see Technical Informa-
tion in the Operating Instructions).
ASSIGN FREQUENCY Use this function to assign a measured variable to the frequency output.
! Note!
This function is not available unless the FREQUENCY setting was selected in the OPERA-
TION MODE function.
Options:
OFF
MASS FLOW
CORRECTED VOLUME FLOW
TEMPERATURE
Factory setting:
MASS FLOW
! Note!
If you select OFF, the only functions shown in this function group are ASSIGN
FREQUENCY and OPERATION MODE.
END VALUE
FREQUENCY
Use this function to define a full scale frequency for the frequency output.
You define the associated measured value of the measuring range in the VALUE f HIGH
function described on Page 29.
! Note!
This function is not available unless the FREQUENCY setting was selected in the OPERA-
TION MODE function.
User input:
4-digit fixed-point number: 2 to 1000 Hz
Factory setting:
1000 Hz
Example:
• VALUE f HIGH = 1000 kg/h, full scale frequency = 1000 Hz: i.e. a frequency of 1000
Hz is output at a flow of 1000 kg/h.
• VALUE f HIGH = 3600 kg/h, full scale frequency = 1000 Hz: i.e. a frequency of 1000
Hz is output at a flow of 3600 kg/h.
! Note!
In the FREQUENCY operating mode the output signal is symmetrical (on/off ratio = 1:1).
At low frequencies the pulse duration is limited to a maximum of 2 seconds, i.e. the
on/off ratio is no longer symmetrical.
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