Endress+Hauser Liquiphant FTL31 Operating Instructions Manual page 26

Electrical connection
2-wire AC/DC
Terminal assignment
1
0.5A
L1/L+
Symbols Description
Yellow LED (ye) lit
Yellow LED (ye) not lit
K External load
Connection with cable
Depending on the assignment of the connector or the wiring of the cable, the device works in
either the MAX or MIN operating mode.
When the cable is wired, one wire of the cable does not have any function in each of the
operating modes (brown in the case of MIN, and gray in the case of MAX). The cable with no
function must be secured against inadvertent contact.
 15 Cable (cannot be disassembled)
26
2
>20 V
K
N/L–
A0021220
MIN operating mode
1
2
1 2
Liquiphant FTL31
Yellow LED (ye)
A0045070
A0045069
A0022902
Endress+Hauser