Endress+Hauser Proline Prosonic Flow 93C Description Of Device Functions page 65

Device functions Proline Prosonic Flow 93C PROFIBUS DP/PA
Endress+Hauser
OUTPUTS→ PULSE/FREQUENCY OUTPUT 1 → CONFIGURATION (STATUS)
ASSIGN STATUS
!
(4241)
This function is not available unless the STATUS setting was selected in the
OPERATION MODE function (4200).
Use this function to assign a switching function to the status output.
Options:
OFF
ON (operation)
NOTICE MESSAGE
FAULT MESSAGE
FAULT MESSAGE & NOTICE MESSAGE
LIMIT TOTALIZER (1 to 3)
FLOW DIRECTION AVERAGE
LIMIT VOLUME FLOW AVERAGE
LIMIT SOUND VELOCITY AVERAGE
LIMIT AVERAGE FLOW VELOCITY
!
• The following settings/entries must be made to ensure correct and immediate signal
Factory setting:
FAULT MESSAGE
!
• The behavior of the status output is a normally closed behavior, in other words the
• If you select OFF, the only function shown in the CONFIGURATION function group is
ON-VALUE
!
(4242)
This function is not available unless STATUS was selected in the OPERATION MODE
function (4200) and LIMIT VALUE or FLOW DIRECTION was selected in the
ASSIGN STATUS function (4241).
Use this function to assign a value to the switch-on point (activation of the status output).
The value can be equal to, greater than or less than the switch-off point. Positive or
negative values are permissible, depending on the measured variable in question
(e.g. volume flow).
User input:
5-digit floating-point number, [unit]
Factory setting:
0 [unit]
!
• The appropriate unit is taken from the UNIT VOLUME FLOW function (0402) .
• Only the switch-on point is available for flow direction output (no switch-off point). If
Functional description
(only with PROFIBUS DP)
Note!
Note!
output:
– Function SWITCH-ON DELAY (4243) = 0 ms → Page 66
– Function SWITCH-OFF DELAY (4245) = 0 ms → Page 66
– Function TIME CONSTANT (4247) = 0 ms → Page 68
Note!
output is closed (transistor conductive) when normal, error-free measuring is in
progress.
the ASSIGN STATUS function (4241).
Note!
Note!
you enter a value not equal to the zero flow (e.g. 5), the difference between the zero
flow and the value entered corresponds to half the switchover hysteresis.
6 Block OUTPUTS
65