Endress+Hauser Proline Promag L 400 HART, Руководство по эксплуатации

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Diagnostics and troubleshooting Proline Promag L 400 HART
104 Hauser
12 Diagnostics and troubleshooting
12.1 General troubleshooting
For local display
Problem Possible cause Remedy
Local display dark and no output signals Supply voltage does not match that
specified on the nameplate.
Apply the correct supply voltage
(
®
ä
36).
Local display dark and no output signals No contact between connecting cables
and terminals.
Check the contacting of the cables and
correct if necessary.
Local display dark and no output signals Terminals are not plugged into the main
electronics module correctly.
Check terminals.
Local display dark and no output signals Main electronics module is defective.
Order spare part (
®
ä 119).
Local display dark and no output signals The connector between the main
electronics module and display module
is not plugged in correctly.
Check the connection and correct if
necessary.
Local display dark and no output signals The connecting cable is not plugged in
correctly.
1. Check the connection of the
electrode cable and correct if necessary.
2. Check the connection of the coil
current cable and correct if necessary.
Local display is dark, but signal output
is within the valid range Display is set too bright or too dark. • Set the display brighter by
simultaneously pressing O + F .
• Set the display darker by
simultaneously pressing S + F .
Local display is dark, but signal output
is within the valid range Display module is defective. Order spare part (
®
ä
119).
Text on local display appears in a foreign
language and cannot be understood. Incorrect operating language is
configured. 1. Press S + O for 2 s ("home position").
2. Press F .
3. Set the desired language in the
Language parameter.
For output signals
Problem Possible cause Remedy
Signal output outside the valid range Main electronics module is defective. Order spare part (
®
ä
119).
Device shows correct value on local
display, but signal output is incorrect,
though in the valid range. Configuration error Check and correct parameter
configuration.
Device measures incorrectly. Configuration error or device is
operated outside the application. 1. Check and correct parameter
configuration.
2. Observe limit values specified in the
"Technical Data".
For access
Problem Possible cause Remedy
No write access to parameters Hardware write protection enabled Set the write protection switch on the
main electronics module to the OFF
position (
®
ä
96).