Siemens SITRANS T4200, Operating Instructions Manual

Page: 63 / 100

Functions
9.17 Diagnostics
SITRANS TH200/TH300
62
Operating Instructions, 06/2010, A5E00393069-03
9.17.2 Violations of specification
WARNING
Non-observance of Ex ambient conditions
If the device has been operated outside the ambient conditions specified for potentially
explosive atmospheres, you may no longer operate the device in potentially explosive
atmospheres.
Additionally make sure to permanently mask all Ex markings on the nameplate.
CAUTION
Operation outside the permissible temperature limits
If you use the transmitter outside the permissible temperature limits, it no longer
corresponds to the specification. The transmitter then outputs the parameterized fault
current.
The message "Ambient temperature error/electronics temperature error" remains set in the
device even after the power supply has been switched off and on again.
Operate the transmitter within the permissible temperature limits again, and reset the
message "Ambient temperature error/electronics temperature error".
Reset
If you have guaranteed by means of sensor and D/A trimming that the transmitter is
working with a tolerable accuracy, you can reset the transmitter.
Use the software tool SIPROM T or SIMATIC PDM to carry out the reset:

SIPROM T menu item for SITRANS TR200:
Device ➜ Device status ➜ Device reset after ambient temperature error
 SIMATIC PDM menu item for SITRANS TR300:
View ➜ Device status ➜ Device reset after ambient temperature error
Note
Incorrect configuration
The configuration will not be completely stored in the device if the supply voltage fails during
a write operation to the device. The diagnostic bit "HW/FW error" is set via HART.
Faulty or incomplete configurations are signaled by continuous lighting-up of the red
diagnostics LED on the device.
Repeat the loading procedure for the configuration. The device will then revert to working in
accordance with the specifications.