Pepperl+Fuchs LUC-M Series, Function Manual

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LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Function group "safety settings" (01)
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4.3 Function "outp. echo loss" (012)
Use this function to set the output response on echo loss.
Selection:
• alarm
• hold
• ramp % /min
alarm
On echo loss, the instrument switches to alarm state after an adjustable
"delay time" (014) . The output response depends on the configuration set in
"output on alarm" (010) .
hold
On echo loss, a warning is generated after a definable "delay time" (014) . Output is
held.
ramp %/min
On echo loss, a warning is generated after a definable "delay time" (014) . The output is
changed towards 0 % or 100 % depending on the slope defined in "ramp %span/min"
(013) .
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E
+ –
delay time (014)
delay time (014)
delay time
(014)
ramp % span/min
(013)