Endress+Hauser Liquiphant M FTL50H - Electronic Insert FEL55 (8;16 mA); Power Supply and Two-Wire Connection; Output Signal and Load Examples

Liquiphant M FTL50(H), FTL51(H)
12 Endress+Hauser
Electronic insert FEL55 (8/16 mA)
Power supply Supply voltage: 11...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…36 V DC
Example:
PLC with 250 Ω loop powered input
250 Ω = (U – 11V) / 16, 8 mA
4,2 [Ω/Α] = U – 11 V
U = 15,2 V
For connecting to programmable
logic controllers (PLC).
AI module 4...20 mA to EN 61131-2.
Output signal jump from high to low
current on limit.
L00-FTL5xxxx-04-05-xx-en-000
12
1 2
FEL55
FEL55
–
–
EEx ia
EEx ia
+
+
E
E
X
X
E
E
X
X
U– 1
U– 1
1…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.
+
21
+
21
+
21
+
21
~16 mA
~8 mA
~8 mA
~16 mA