Micropilot M FMR250 FOUNDATION Fieldbus
Trouble-shooting
Hauser
75
9
Trouble-shooting
9.1
Trouble-shooting instructions
L00-FMR250xx-19-00-00-en-003
Instrument does
not respond
Check voltage and
compare it with the
specifications on the
nameplate.
Connect the
correct voltage
Instrument works?
Read
y
Check the polarit
y
of the voltage.
Check power connection
to electronic board
Correct the polarit
y
Connect plug
Instrument works?
Instrument works?
Read
y
Read
y
Values on displa
y
invisible
ok
ok
ok
Yes
Yes
Yes
No
No
No
No
Not ok
Not ok
Not ok
Check plug contact
of the displa
y
.
Connect the plug
correctl
y
Correct configuration
Displa
y
works?
Read
y
Read
y
Yes
ok
No
Not ok
Yes
No
Micropilot M FMR 250 -Trouble Shooting
ok
Output current between
3.6 …22mA ?
Contrast:
F O
+
The displa
y
is possibl
y
defective.
Contact E+H Service
Yes
Output current
< 3,6 mA ?
No
Check cabling
Correct the
cabling
Current is ok?
Read
y
Yes
No
Possibl
y
defective electronics
Contact E+H Service
HART
communication
does not
function
Is the communication
resistor installed
according to the
OM?
Install the resistor
(see the OM)
Communication ok?
Read
y
Read
y
ok
Yes
Yes
No
No
Connect the
Commubox
(see the OM)
Communication ok?
Read
y
Set the switch
correctl
y
Communication ok
Read
y
Read
y
Contact E+H Service
Contact E+H Service
ok
ok
ok
Yes
No
Yes
Yes
No
ok
Not ok
Not ok
Not ok
Not ok
Not ok
Not ok
?
Is the switch on the
Commubox for
selecting HART/Intensor
in the correct position?
Is the Commubox
connected according
to the OM?
Communication
via Service adapter
FXA 193 does not
function
Instrument
measures
incorrectl
y
Check configuration
of COM port on PC
Check basic setup
Proceed according
to section
'Trouble shooting’ in OM
Repeat
basic setup
Not ok
Yes
Yes
Yes
Yes
Communication ok?
Measurement ok?