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Commissioning
8.1
Commissioning
Missing type of protection
If the transmitter is not operated with an intrinsically-safe power supply, the type of
protection "Intrinsic safety" is no longer guaranteed and the intrinsically-safe approval may
be revoked.
Permanently erase, therefore, the irrelevant types of protection on the nameplate before
commissioning to ensure that erroneous deployment is avoided.
Procedure
1. Program the transmitter's operating data according to the actual requirements.
2. Assemble the transmitter.
3. Connect the sensor to the power supply, see Chapter Connecting (Page 23).
4. Turn on the auxiliary power supply.
5. Wait about 10 seconds. After this start-up time the transmitter is operational.
8.2
LED operating indicator
● Operating indicator does not light: No supply voltage
● Constant green light: Everything OK, normal error-free operating state
● Constant/flashing red light: Disrupted operation
SITRANS TH200/TH300
Operating Instructions, 06/2010, A5E00393069-03
WARNING
If applicable, enter the changed operating data on the additional plate on the enclosure.
Note
Warming-up
To obtain exact measured values, the transmitter needs to be allowed to warm up for five
minutes or so after the power supply has been switched on.
– Flashing (ca. 2 Hz) red light: Indication of faults independent of the device, e.g. wire
break, sensor short circuit, violation of sensor limits
– Constant red light: Indication of errors in the device, e.g. RAM-,
ROM-, EEPROM-, CHECKSUM-, WATCHDOG-, STACK error or violation of the
permitted ambient temperature limits and if the minimum supply voltage for the device
is not reached.
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