Endress+Hauser Liquiphant FTL51B Operating Instructions Manual page 20

Electrical connection
20
Output signal status
• OK status: load on (switched through)
• Demand mode: load off (blocked)
• Alarm: load off (blocked)
Terminal assignment
NOTICE
Device can be damaged.
‣
External load K must always be connected! The electronic insert has an integrated
short-circuit connection.
Behavior of the switch output and signalling
MAX
MIN
The red LED flashes in the event of an overload or short-circuit. The red LED is lit
permanently (steady red) in the event of an alarm.
U 19...253 V AC ~ ~
I max: 350 mA
L1 N
MAX >0,7
COM
>0,5
MIN
1
2
1 2
1 A
PE L1 N
RD YE GN
L1 1
<3.8 mA
L1 1
L1 1
<3.8 mA
L1 1
<3.8 mA
L1 1
Liquiphant FTL51B
K
I
L
(N)
2
U
K
2 (N)
K
I
L
(N)
2
U
K
2 (N)
K
2 (N)
K
Endress+Hauser
A0036060
A0031901