Endress+Hauser Liquiphant FTL62 - Device Configuration Methods

Commissioning Liquiphant FTL62
34 Endress+Hauser
8 Commissioning
8.1 Functional test using key on electronic insert
• The functional test must be performed in the OK state: MAX safety and sensor free or MIN
safety and sensor covered.
• The LEDs flash one after another as a chaser light during the functional test.
• When performing the proof test in safety instrumented systems according to SIL or WHG:
comply with the instructions in the Safety Manual.
>0,5
COM
NL1
1
2
MIN
MAX
>0,7
>0,5
1
2
MIN
MAX
>0,7
A0037132
 29 Position of key for the functional test for electronic inserts FEL61/62/64/64DC/67/68
1. Make sure that no undesired switching operations are triggered!
2. Press the "T" key on the electronic insert for at least 1 s (e.g. with screwdriver).
 The device function check is performed. The output changes from the OK state to
the demand state.
Duration of the function check: at least 10 s or if the key is pressed for > 10 s, the
check lasts until the test button is released.
The device returns to normal operation if the internal test is successful.
If the housing may not be opened during operation due to explosion protection
requirements, e.g. Ex d /XP, the functional test can also be started from the outside with
the test magnet (optionally available), (FEL62, FEL64, FEL64DC, FEL68).
The functional test of the PFM electronics (FEL67) and NAMUR electronics (FEL68) can
be started at the Nivotester FTL325P/N.
8.2 Functional test of the electronic switch with a test magnet
Perform functional test of the electronic switch without opening the device:
‣
Hold the test magnet against the marking on the nameplate on the outside.
 Simulation is possible in the case of the FEL62, FEL64, FEL64DC, FEL68 electronic
inserts.
The functional test with the test magnet acts in the same way as the functional test using the
test button on the electronic insert.