KROHNE VFM 1091 - Manual (Page 16)

5.5 Error messages
5.5.1 Error messages in Measurement mode
Error message Type Description Corrective action required
INTL ERR. nn
* Internal error in Switch off the power and try again. If the problem
converter operation persists contact KHRONE MARSHALL service.
NO SIGNAL
N No signal from No flow through the primary or Vortex sensor problem.
the vortex sensor If sensor problem, contact KHRONE MARSHALL service.
LOW FREQ
N Vortex frequency Check Flow rate>q min else call KHRONE MARSHALL
Service.
too low
HIGH FREQ
N Vortex frequency Check Flow rate
Service.
too high
LOW FLOW
N Flow rate lower
than minimum flow Converter will continue to display actual flow rate. However
rate q min accuracy of measurement may suffer.
HIGH FLOW
N Actual flow rate Corrective action depends on application process. If flow
higher than q max rate exceeds too much further it may damage entire instrument
physically!
INV. CONFIG
F Configuration date Check entire configuration again. If error persists-call
in non-volatile memory KHRONE MARSHALL service.
is not valid.
UC FAIL
F Micro-Controller failure Contact KHRONE MARSHALL Service.
LCDC FAIL
F LCD Controller IC (s) has Contact KHRONE MARSHALL Service.
failed (This error is
applicable to users having
display option)
KEY FAIL
F Failure of Keys Contact KHRONE MARSHALL Service.
(applicable to instrument
which have display option)
NOVRAM FAIL
F Non Volatile Memory Contact KHRONE MARSHALL Service.
has failed
LINE INTER N Supply interrupted Press keys to reset this error.
· This text is displayed for Fatal Errors. The nature of error is beyond the scope of user (failure of IC or other hardware inside converter electronics
etc.). All that can be done is to switch OFF power and then try again. If error message continues, call KHRONE MARSHALL service. internal
error nn = internal error number.
· Type N indicates non-fatal errors whereas F indicates fatal errors.
· Measurement stops if any Fatal error is encountered. This means that device makes flow rate equal to zero,
· Current output to minimum value 4m A & pulse output OFF.
· When errors are displayed during the measuring mode, 'n Err" (n = number) will appear in the 1st line. n gives the number of momentarily
occurring errors that are displayed alternately with the actual measured value.
· Error messages disappear when their cause disappears
5.5.2 Error Messages in Programming mode
Error in programming mode can only occur while entering any numerical value. When you enter numerical value outside possible limits you get
message " n.nnn E n" in 1st line and MIN. VALUE or MAX VALVE or in the 2nd line ("MIN VALUE" if entered value is less than lower limit and
“MAX VALVE “ if higher limit is crossed). Note the message indicating permissible limit then press the key to continue.
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