Proline Promass 83E/F/O Description of Device Functions - FMC ...
Proline Promass 83E/F/O Description of Device Functions - FMC ...
Proline Promass 83E/F/O Description of Device Functions - FMC ...
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<strong>Device</strong> <strong>Functions</strong> <strong>Proline</strong> <strong>Promass</strong> 83<br />
7 Block OUTPUTS<br />
Function description<br />
OUTPUTS PULSE/FREQUENCY OUTPUT (1...2) CONFIGURATION (FREQUENCY)<br />
MEASURING MODE<br />
(4206) ! Note!<br />
This function is not available unless the FREQUENCY setting was selected in the<br />
OPERATION MODE function (4200).<br />
Use this function to define the measuring mode for the frequency output.<br />
Options:<br />
STANDARD<br />
SYMMETRY<br />
PULSATING FLOW<br />
Factory setting:<br />
STANDARD<br />
<strong>Description</strong> <strong>of</strong> the individual options:<br />
•STANDARD<br />
The frequency output signal is proportional to the measured variable. The flow<br />
components outside the scaled measuring range (defined by the VALUE F LOW m and<br />
the VALUE F HIGH n) are not taken into account for signal output.<br />
– If one <strong>of</strong> the values is defined as equal to the zero flow (e.g. VALUE F LOW =<br />
0 kg/h), no message is given if this value is exceeded or not achieved and the<br />
frequency output retains its value ( 0 Hz in the example). If the other value is<br />
exceeded or not achieved, the message “FREQUENCY OUTPUT AT FULL SCALE<br />
VALUE” appears and the frequency output responds in accordance with the<br />
parameter setting in the function FAILSAFE MODE (4209).<br />
– If both values defined are not equal to the zero flow (for example VALUE F LOW =<br />
–5 kg/h; VALUE F HIGH = 10 kg/h), the message “FREQUENCY OUTPUT AT<br />
FULL SCALE VALUE” appears if the measuring range is exceeded or not achieved<br />
and the frequency output responds in accordance with the parameter settings in the<br />
function FAILSAFE MODE (4209)...<br />
Freq.<br />
125<br />
100<br />
0<br />
➀<br />
➁<br />
Q<br />
A0001279<br />
SYMMETRY<br />
The frequency output signal is independent <strong>of</strong> the direction <strong>of</strong> flow (absolute amount <strong>of</strong><br />
the measured variable). The VALUE F LOW m and VALUE F HIGH n must have the<br />
same sign (+ or -). The VALUE F HIGHo (e.g. backflow) corresponds to the mirrored<br />
VALUE F HIGH n (e.g. flow).<br />
125<br />
100<br />
Freq.<br />
➂<br />
0<br />
➀<br />
➁<br />
Q<br />
A0001280<br />
! Note!<br />
• The direction <strong>of</strong> flow can be output via the configurable relay or status outputs.<br />
• SYMMETRY cannot be selected unless the values in the VALUE F LOW (4204) and<br />
VALUE F HIGH (4205) functions have the same sign or one <strong>of</strong> the values is zero. If the<br />
values have different signs, SYMMETRY cannot be selected and an<br />
“ASSIGNMENT NOT POSSIBLE” message is displayed.<br />
(continued on next page)<br />
Issue/Rev. 0.2 (12/12) MN0M023 • Page 79
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