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Diagnostics and troubleshooting iTEMP TMT71/72
Short text Corrective measure
Status
signal
from the
factory
Diagnosti
c
behavior
from the
factory
402 Initialization active Initialization active, please wait. C Warning
410 Data transfer failed 1. Check connection. F Alarm
2. Retry data transfer.
411 Up-/download active Up-/download active, please wait. C Warning
435 Linearization faulty Check linearization. F Alarm
485 Process variable simulation
active
491 Current output simulation
495 Diagnostic event simulation
active
Deactivate simulation. C Warning
Deactivate simulation. C Warning
Deactivate simulation. C Warning
531 Factory adjustment missing 1. Contact service.
2. Replace device.
537 Configuration 1. Check device configuration
2. Upload and download new configuration.
(In case of current output: check
configuration of analog output.)
582 Sensor diagnostics TC
deactivated
Switch on diagnostics for thermocouple C Warning
measurement
Diagnostics for the process
801 Supply voltage too low
3)
Increase supply voltage. S Alarm
825 Operating temperature 1. Check ambient temperature. S Warning
2. Check process temperature.
844 Process value outside
specification
1) Can be set to F, C, S, M, N
1. Check process value. S Warning
2. Check application.
Check sensor.
2) Can be set to 'Alarm', 'Warning' and 'Disabled'
3) In the case of this diagnostic event, the device always outputs a "low" alarm status (output current ≤ 3.6 mA).
9.7 Firmware history
Revision history
The firmware version (FW) on the nameplate and in the Operating Instructions indicates
the device release: XX.YY.ZZ (example 01.02.01).
XX Change to main version. No longer compatible. The device and
Operating Instructions change.
YY Change to functions and operation. Compatible. The Operating
ZZ Fixes and internal changes. No changes to the Operating Instructions.
40 V. 1, Rev. 2, 4-10-2018 Endress+Hauser
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