Endress+Hauser Liquiphant M FTL51C - Application Overview

Liquiphant M FTL51C
12 Endress+Hauser
Electronic insert FEL58 (NAMUR H-L edge)
Power supply Supply voltage: DC 8.2 V ±20 %
Power consumption: < 6 mW at I < 1 mA; < 38 mW at I = 3.5 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
as per NAMUR (IEC 60947-5-6), e.g. FTL325N,
FTL375N from Endress+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
12
FEL58
–
EEx ia
H
L
+
E
X
E X
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