Diagnostics and troubleshooting iTEMP TMT162
34 Endress+Hauser
9 Diagnostics and troubleshooting
9.1 Troubleshooting
Always start troubleshooting with the checklists below if faults occur after start up or
during operation. This takes you directly (via various queries) to the cause of the problem
and the appropriate remedial measures.
In the event of a serious fault, a device might have to be returned to the manufacturer
for repair. Refer to the "Return" section before returning the device to Endress+Hauser.
→ 43
Check display (local display)
Display is blank - no connection to
the HART host system.
1. Check the supply voltage → terminals + and -
2. Measuring electronics defective → order spare part, → 41
Display is blank - however,
connection has been established to
the HART host system.
1. Check whether the display module fitting kit is correctly seated on the
electronics module → 14
2. Display module defective → order spare part, →
41
3. Measuring electronics defective → order spare part, → 41
Local error messages on the display
→ 36
Faulty connection to the fieldbus host system
Problem Possible cause Solution
Device is not
responding.
Supply voltage does not match the value
indicated on the nameplate.
Apply correct voltage
Connecting cables are not in contact with
the terminals.
Check the connection of the cables and
correct if necessary.
Output current < 3.6
mA
Signal line is not wired correctly. Check wiring.
Electronics unit is defective. Replace the device.
HART
communication is
not working.
Communication resistor missing or
incorrectly installed.
Install the communication resistor (250 Ω)
correctly.
Commubox is connected incorrectly. Connect Commubox correctly.
Error messages in the configuration software
→ 37
Application errors without status messages for RTD sensor connection
Problem Possible cause Solution
Measured value is incorrect/
inaccurate
Incorrect sensor orientation. Install the sensor correctly.
Heat conducted by sensor. Observe the face-to-face length of the
sensor.
To Next Page
Loading...
