Endress+Hauser Proline Promag 51, Operating Instructions Manual

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Proline Promag 51 9 Trouble-shooting
Hauser 93
Frequency output FALLBACK VALUE
Signal output
→
0 Hz
FAILSAFE LEVEL
Output of the frequency specified in the FAILSAFE
VALUE function (No. 4211).
HOLD VALUE
Last valid value (preceding occurrence of the fault)
is output.
ACTUAL VALUE
Fault is ignored, i.e. normal measured value output
on the basis of ongoing flow measurement.
Output signal corresponds to “zero
flow”
Totalizer STOP
*)
The totalizers are paused until the error is
rectified.
ACTUAL VALUE
The fault is ignored. The totalizers continue to count
in accordance with the current flow value.
HOLD VALUE
The totalizers continue to count the flow in accord-
ance with the last valid flow value (before the error
occurred).
* fixed setting in custody transfer mode
Totalizer stops
Status output In the event of a fault or power supply failure:
Status output
→
non-conductive
No effect on status output
Failsafe mode of outputs and totalizers
Process/system error is current Positive zero return is activated
(Not possible in
custody transfer
mode )