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 (STATUS)<br />
MEASURING MODE<br />
(4246) ! Note!<br />
This function is not available unless STATUS was selected in the OPERATION MODE<br />
function(4200) and the status output was assigned a limit value.<br />
Use this function to define the measuring mode for the status output.<br />
Options:<br />
STANDARD<br />
The status output signal switches at the defined switch points.<br />
SYMMETRY<br />
The status output signal switches at the defined switch points, irrespective <strong>of</strong> the sign. If<br />
you define a switch point with a positive sign, the status output signal switches as soon as<br />
the value is reached in the negative direction (negative sign), (see illustration).<br />
Factory setting:<br />
STANDARD<br />
Example for the SYMMETRY measuring mode:<br />
Switch-on point Q = 4, Switch-<strong>of</strong>f point Q = 10<br />
m = Status output switched on (conductive)<br />
n = Status output switched <strong>of</strong>f (nonconductive)<br />
Q<br />
10<br />
4<br />
0<br />
-4<br />
t<br />
-10<br />
➀ ➁ ➀ ➁ ➀<br />
A0001247<br />
! Note!<br />
• SYMMETRY cannot be selected unless the values in the ON-VALUE (4242) and OFF-<br />
VALUE (4244) functions have the same sign or one <strong>of</strong> the values is zero.<br />
• If the values have different signs, SYMMETRY cannot be selected and an<br />
“ASSIGNMENT NOT POSSIBLE” message is displayed.<br />
TIME CONSTANT<br />
(4247) ! Note!<br />
This function is not available unless the STATUS setting was selected in the OPERATION<br />
MODE function (4200).<br />
Use this function to enter a time constant defining how the measuring signal reacts to<br />
severely fluctuating measured variables, either very quickly (enter a low time constant) or<br />
with damping (enter a high time constant). Damping acts on the measuring signal before<br />
the switch status changes, and consequently before switch-on or switch-<strong>of</strong>f delay is<br />
activated. The purpose <strong>of</strong> damping, therefore, is to prevent the status output changing<br />
state continuously in response to fluctuations in flow.<br />
User input:<br />
Fixed-point number 0.00 to 100.00 s<br />
Factory setting:<br />
0.00 s<br />
Issue/Rev. 0.2 (12/12) MN0M023 • Page 95
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