Device Functions Proline t-mass 65 12 Group RELAY OUTPUT 1/2
Endress+Hauser 45
12.1 Information on the response of the relay output
General
If you have configured the relay output signal for LIMIT VALUE, you can define the requisite switch points in the ON-
VALUE and OFF-VALUE functions. When the measured variable in question reaches one of these predefined values, the
relay output switches as shown in the illustrations below.
Relay output configured for limit value
The relay output signal switches as soon as the measured variable undershoots or overshoots a defined switch point.
Application: Monitoring flow rates or gas temperature conditions.
Measured variable
A0001235
➀ = ON > SWITCH-OFF POINT (maximum safety)
➁ = ON > SWITCH-OFF POINT (minimum safety)
➂ = Relay de-energised
VALUE SIMULATION
SWITCH POINT
Use this function to define the status of the relay output during the simulation. This value
is used to test downstream devices and the flowmeter itself. Depending on the relay con-
figuration (as make or break contact) the following selections are available.
! Note!
This function is not available unless the function SIMULATION SWITCH POINT is active
(=ON).
Options:
Relay output configured as normally open (make) contact:
MAKE CONTACT OPEN
MAKE CONTACT CLOSED
Relay output configured as normally closed (break) contact:
BREAK CONTACT OPEN
BREAK CONTACT CLOSED
! Note!
If exiting this function and the SIMULATION SWITCH POINT function is active (= ON),
the message END SIMULATION is displayed. Select YES to end simulation or NO to con-
tinue simulation.
" Caution!
The setting is not saved if the power supply fails.
Function description RELAY OUTPUT 1/2
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