Application Faults Without Messages - Endress+Hauser TMT122 Operating Instructions Manual

Temperature DIN rail transmitter
Application fault without
messages
Endress+Hauser
Fault code
106
201
202
203
9.3

Application faults without messages

General application faults
Fault
No communication
Application faults for RTD connection (Pt100/Pt500/Pt1000/Ni100)
Fault
≤ ≥
Fault current
( 3.6 mA or 21 mA)
Measured value incorrect/inaccurate
Cause
Up-/Download active
Warning: Measured value too small
Warning: Measured value too large
Unit is reset (to factory default
settings)
Cause
No power supply on 2 wire circuit
Power supply too low (<10 V)
Defective interface cable
Defective interface
Defective DIN rail transmitter
Cause
Defective sensor
Incorrect RTD connection
Incorrect 2 wire connection
Transmitter programming faulty (wire
number)
Programming
Defective DIN rail transmitter
Faulty sensor installation
Heat conducted via sensor
Transmitter programming faulty (wire
number)
Transmitter programming faulty (scale) Change scale
Wrong RTD used
Sensor connection (2 wire)
Sensor cable (2 wire) not compensated
Offset incorrectly set
9 Trouble-shooting
Action/cure
None (will be automatically
acknowledged)
Enter other values for measured
value range start
Enter other values for measured
value range end
None
Action/cure
Check current loop
Connect cables correctly to terminal
plan (polarity)
Check interface cable
Check PC interface
Replace DIN rail transmitter
Action/cure
Check sensor
Reconnect cables correctly (connec-
tion diagram)
Connect cables correctly to terminal
plan (polarity)
Change parameter 'CONNECTION'
(See "Description of unit functions"
on page 21.)
Thermocouple set up (see
chapter 6.2.5); change to RTD
Replace DIN rail transmitter
Install sensor correctly
Take note of sensor installation
length
Change parameter 'Connection type'
Change parameter 'Sensor type'
Check sensor connections
Compensate cable resistance
Check offset
27