Endress+Hauser Proline Prowirl 72, Руководство по эксплуатации

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Proline Prowirl 72 11 Description of device functions
E Hauser 93
11.2.9 Information on the response of the status output
General information
If you have configured the status output for “LIMIT VALUE”, you can specify the required switch points in the SWITCH-
ON POINT and SWITCH-OFF POINT functions. When the measured variable in question reaches these predefined values,
the status output switches as shown in the illustrations below.
Status output configured for limit value
The status output switches as soon as the current measured variable undershoots or overshoots a defined switch point.
Application: monitoring flow or process-related boundary conditions.
Measured variable
A0003592
➀
= ON
≤
SWITCH-OFF POINT (maximum safety)
➁
= ON > SWITCH-OFF POINT (minimum safety)
➂
= Status output switched off (not conductive)
Switching behavior of the status output
Function Status Open collector behavior
(transistor)
ON (operation) System in operation
Conductive
System not in operation
(power supply failure)
Not conductive
Fault message System OK
Conductive
(System or process error)
Fault
È
failsafe mode outputs/
IN
puts and totalizers
Not conductive
Notice message System OK
Conductive
(System or process error)
Fault
È
continuation of operation Not conductive
Fault message
or notice message System OK
Conductive
(System or process error)
Fault
È
failsafe mode or
Notice
È
continuation of operation
Not conductive
Limit value
• Volume flow
• Totalizer
Limit value not overshot or
undershot
Conductive
Limit value overshot or undershot
Not conductive
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