Liquiphant S FTL70, FTL71
11
Electronic insert FEL58 (NAMUR H-L edge)
Power supply
Power consumption: < 6 mW at I < 1 mA; < 38 mW at I = 2.2 to 4 mA
Connection data interface: IEC 60947-5-6
Electrical connection
Two-wire connection for separate switching unit
Output signal
Signal on alarm
Output signal in the event of damaged sensor: < 1.0 mA
Connectable load
• See Technical Data of the isolating amplifier connected according to IEC 60947–5–6 (NAMUR)
• Connection also to isolating amplifiers which have special safety circuits (I > 3.0 mA)
For connecting to isolating amplifiers acc. to NAMUR
(IEC 60947-5-6), e.g. FTL325N, FTL375N from
Hauser.
Output signal jump from high to low current on point
level.
(H–L edge)
Additional function:
Test key on the electronic insert.
Pressing the key breaks the connection
to the isolating amplifier.
!
Note!
In Ex–d applications, the additional function
can only be used if the housing is not exposed
to an explosive atmosphere.
Connecting to multiplexer:
Set clock time to min. 2 s.
L00-FTL5xxxx-04-05-xx-en-002
1 2
FEL58
–
EEx ia
H
L
+
EX
EX
I
Isolating amplifier
to
(NAMUR)
IEC 60947-5-6
Safety mode
Level
Output signal
LEDs
green
yellow
L00-FTL5xxxx-07-05-
xx-xx-002
= lit
= flashes
= unlit
L00-FTL5xxxx-04-05-xx-xx-007
Max.
Min.
+
2
1
+
2
1
+
2
1
+
2
1
2.2 …
3.5 mA
2.2 …
3.5 mA
0.6 …
1.0 mA
0.6 …
1.0 mA
