Levelflex FMP55 HART
Diagnostics and troubleshooting
Hauser
85
13
Diagnostics and troubleshooting
13.1 General trouble shooting
13.1.1 General errors
Error
Possible cause
Remedial action
Device does not respond.
Supply voltage does not match
the value indicated on the
nameplate.
Connect the correct voltage.
The polarity of the supply
voltage is wrong.
Correct the polarity.
The cables do not contact the
terminals properly.
Ensure electrical contact between the cable
and the terminal.
Values on the display invisible
Contrast setting is too weak or
too strong.
• Increase contrast by pressing and
simultaneously.
• Decrease contrast by pressing and
simultaneously.
The plug of the display cable is
not connected correctly.
Connect the plug correctly.
Display is defective.
Replace display.
"Communication error" is
indicated on the display when
starting the device or
connecting the display
Electromagnetic interference
Check grounding of the device.
Broken display cable or display
plug.
Replace display.
Duplicating of the parameters
from one device to another via
the display doesn't work.
Only the "Save" and "Abort"
options are available.
Display with backup is not
recognized if no data backup
has been performed at the
device before.
Connect display (with the backup) and
restart the device.
Output current <3.6 mA
Signal cable connection
incorrect.
Check connection.
Electronics is defective.
Replace electronics.
HART communication does not
function.
Communication resistor
missing or incorrectly installed.
Install the communication resistor(250 Ω)
correctly.
Commubox connected
incorrectly.
Connect Commubox correctly.
Commubox not switched to
HART mode.
Set the selection switch of the Commubox to
the HART position.
CDI communication does not
work.
Wrong setting of the COM port
on the computer.
Check the setting of the COM port on the
computer and change it if necessary.
Device measures incorrectly.
Parametrization error
Check and adjust parameterization.
Device not accessible via
SmartBlue
No Bluetooth connection
Enable Bluetooth function onsmartphone or
tablet.
Device already linked to
another smartphone / tablet
Disconnect device from smartphone/tablet.
Bluetooth module not
connected.
Connect Bluetooth module (see SD02252F).
Login via SmartBlue not
possible
Device is being put into
operation for the first time
Enter initial password (ID of the Bluetooth
module) and change.
Device cannot be operated via
SmartBlue
Incorrect password entered
Enter correct password
Password forgotten
Contact Hauser Service
(
www.addresses.endress.com
)