Deltaflow-Monitoring - turck FM-IM Serie Betriebsanleitung

Instruction manual FM-IM / FMX-IM
The following errors are signaled via Out 3:
■
Range between minimum and maximum flow too small
■
Flow rate above the operating range
■
Temperature of medium above the operating range
■
Temperature of medium below the operating range
■
Wire breakage in input (sensor)
■
Short circuit in input (sensor)
■
Short circuit transistor output Out 1 (only FM(X)-IM-3UP63X)
■
Short circuit transistor output Out 2 (only FM(X)-IM-3UP63X and FM(X)-IM-
2UPLi63X)
■
Short circuit transistor output Out 3 (only FM(X)-IM-3UP63X and FM(X)-IM-
2UPLi63X)
■
No burden connected (only FM(X)-IM-2UPLi63X)
■
Burden too high or current source defective (only FM(X)-IM-2UPLi63X)
(switch-off of current source; Power-reset needed)
■
General error (disconnection of all outputs; manual reset needed)
The overview of the LED-output of the error displays can be found in Table 3
on p. 18.
IMPORTANT INFORMATION
Error functionality
An error message, "Flow Speed Below Operating Range", does not exist, because
this error is not measureable. The lower limit of the operating range matches
the almost resting medium.
3.5.2

DeltaFlow-Monitoring

DeltaFlow-Monitoring is an internal function where the flow rate is monitored
and compared during a predefined time period. The user has no control over
this function. Teach values can only be stored when the system is in a steady
state; this means that changing the flow rate would only produce a sufficiently
small value.
DeltaFlow-Monitoring prevents that values are stored at a point in time where
the physical system (consisting of sensor and medium) still remains in the tem-
perature adjustment phase, thus leading to erroneous results.
Furthermore, the heating of the sensors after start-up is monitored with this
function (see Chapter 3.5.3 on p. 15).
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Hans Turck GmbH & Co. KG • Tel. +49 (0) 208/4952-0 • Fax +49 (0) 208/4952-264