Liquiphant S FTL70, FTL71
9
Electronic insert FEL55 (8/16 mA)
Power supply
Supply voltage: 11 to 36 V DC
Power consumption: < 600 mW
Reverse polarity protection
Overvoltage protection FEL55: overvoltage category III
Electrical connection
Two-wire connection for separate switching unit
Output signal
Signal on alarm
Output signal on power failure or in the event of damaged sensor: < 3.6 mA
Connectable load
• R = (U - 11 V) : 16.8 mA
• U = connection voltage: 11 to 36 V DC
Example:
PLC with 250
Ω
with 2-wire version
250
Ω
= (U – 11V) / 16.8 mA
4.2 [
Ω
/
Α
] = U – 11 V
U = 15.2 V
For connecting to
programmable logic controllers (PLCs) for example,
AI module 4 to 20 mA to EN 61131-2.
Output signal jump from high to
low current on point level.
L00-FTL5xxxx-04-05-xx-en-000
1 2
1 2
FEL55
FEL55
––
EEx ia
EEx ia
++
EEXX
EEXX
U– 1
U– 11…36 V DC
1…36 V DC
...
...
e.g. PLC
e.g. PLC
Safety mode
Level
Output signal
LEDs
green
red
~ 16 mA
~
8 mA
L00-FTL2xxxx-07-05-
xx-xx-000
= 16 mA ± 5 %
= 8 mA ± 6 %
= lit
= unlit
L00-FTL5xxxx-04-05-xx-xx-006
Max.
Min.
+
2
1
+
2
1
+
2
1
+
2
1
~16 mA
~8 mA
~8 mA
~16 mA
