9 Troubleshooting PROline Promag 53
110 Endress+Hauser
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 measure-
ment.
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
accordance with the last valid flow value
(before the error occurred).
Totalizer stops
Relay output In the event of a fault or power supply failure
Relay
→ deenergized
The “Description of Device Functions” manual
contains detailed information on relay switch-
ing response for various configurations such
as error message, flow direction, EPD, limits,
etc.
No effect on relay output
Failsafe mode of outputs and totalizers
Process/system error is current Positive zero return is activated
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