Endress+Hauser Liquiphant FTL51B - Page 24

Electrical connection Liquiphant FTL51B
24 Endress+Hauser
When connecting a device with high inductance, fit a spark suppressor to protect the relay
contact. Depending on the connected load, a fine-wire fuse protects the relay contact in
the event of a short-circuit.
Behavior of output signal
• OK status: relay energized
• Demand mode: relay de-energized
• Alarm: relay de-energized
Terminal assignment
L1 N 4
3 5
8
7
6
U = 9...20 V DC
!
0.5 A
1
2 2
L1
L+
NO NONC NCC CN
L-
PE
1 2 3 64 75 8
MIN
>0,7
MAX
>0,5
COM
A0037685
 25 DC connection with relay output, electronic insert FEL64 DC
1 When bridged, the relay output works using NPN logic.
2 Connectable load