Endress+Hauser Proline Promag W 400 HART, Operating Instructions Manual

Page: 122 / 198

Diagnostics and troubleshooting Proline Promag W 400 HART
122 Hauser
12 Diagnostics and troubleshooting
12.1 General troubleshooting
For local display
Error Possible causes Solution
Local display dark and no output
signals Supply voltage does not match the
value indicated on the nameplate. Apply the correct supply voltage
→  45→  45.
Local display dark and no output
signals No contact between connecting
cables and terminals. Check the connection 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 →  142.
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  + .
• Set the display darker by
simultaneously pressing  + .
Local display is dark, but signal
output is within the valid range Display module is defective. Order spare part →  142.
Backlighting of local display is red Diagnostic event with "Alarm"
diagnostic behavior has occurred. Take remedial measures
Text on local display appears in a
foreign language and cannot be
understood. Incorrect operating language is
configured. 1. Press  +  for 2 s ("home
position").
2. Press .
3. Set the desired language in the
Display language parameter
(→  106).
Message on local display:
"Communication Error"
"Check Electronics" Communication between the
display module and the electronics
is interrupted. • Check the cable and the
connector between the main
electronics module and display
module.
• Order spare part →  142.
For output signals
Error Possible causes Solution
Signal output outside the valid
range Main electronics module is
defective. Order spare part →  142.
Device shows correct value on local
display, but signal output is
incorrect, though in the valid range. Configuration error Check and correct the 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".