Functional Test Using The Button On The Electronic Insert; Functional Test Of The Electronic Switch With A Test Magnet - Endress+Hauser Liquiphant FTL64 Operating Instructions Manual

Operation options
6.3

Functional test using the button on the electronic insert

The functional test must be performed when the device is in the OK state.
OK state: MAX safety and sensor free or MIN safety and sensor covered.
 31 Position key for the functional test
• Press the test button for at least one second (electronic inserts FEL61/62/64/64DC/67/68)
• Output switches to the safety-oriented state – functional test of the device follows
• Test duration at least 10 s or until the button is released if the button is pressed for > 10 s
• Device switches back to normal operation once internal test has been passed
The LEDs flash one after another as a chaser light during the functional test.
If the housing cannot be opened during operation due to explosion protection requirements,
e. g. Ex d /XP, the functional test can also be started from the outside using the test magnet
(can be ordered as an option) (FEL62, FEL64, FEL64DC, FEL68). The functional test for the
PFM electronics (FEL67) and NAMUR electronics (FEL68) can be started at the Nivotester
FTL325P/N.
Pay attention to the information in the Safety Manual for recurrent testing in safety
equipment in accordance with SIL or WHG.
1. Make sure no unintended switching processes are triggered!
2. Press the button "T" on the electronic insert for at least 1 s (e. g. with a screwdriver).
 The output switches from the OK state to the demand state.
6.3.1 Switching behavior and signaling
 For more information, see Operating Instructions.
6.4

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.
38
MAX
L1 N
MAX >0,7
COM
>0,5
MIN
1
MIN
2
1
2
>0,7
>0,5
Liquiphant FTL64
A0037132
Endress+Hauser