Fel61 Switching Behavior And Signaling - Endress+Hauser Liquiphant FTL64 Operating Instructions Manual

Commissioning
MAX
MIN
RD
1.
>1 s
2.
3.
38
 34 Key for functional test (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.
For more details, see the "Functional test of the electronic switch with a test
A
magnet" section.
8.2.1

FEL61 switching behavior and signaling

GN YE
I
L
L 1 2
ΔU
<3.8 mA
L
1 2
A
L 1 2
 35 FEL61 switching behavior and signaling
A After the test button is pressed, the load is switched off for at least 10 s (I < 3.8 mA) even if the button is
pressed for < 10 s. If the test button is pressed for > 10 s the load remains switched off (I < 3.8 mA) until the
test button is released. The load is then switched on again.
MAX
L1 N
MAX >0,7
COM
>0,5
MIN
1 MIN
2
1
2
RD GN YE
(N) L
K
L
(N)
K
L
(N)
K
Liquiphant FTL64
>0,7
>0,5
<3.8 mA
1 2 (N)
K
<3.8 mA
(N)
1 2
K
<3.8 mA
(N)
1 2
K
Endress+Hauser
A0037132
A0039210