Endress+Hauser Liquiphant FTL51B Operating Instructions Manual page 30

Electrical connection
30
Behavior of the switch output and signalling
MAX
MIN
MAX DIP switch for setting the MAX safety mode →  37
MIN DIP switch for setting the MIN safety mode →  37
RD LED, red, for alarm
YE LED, yellow, switch status
GN LED, green, operational status (device on)
Functional test
→  38
RD YE GN
150 Hz
L1 2
50 Hz
L1 2
50 Hz
L1 2
150 Hz
L1 2
0 Hz
L1 2
Liquiphant FTL51B
1
1
1
1
1
A0037696
Endress+Hauser