Endress+Hauser Liquipoint FTW 31 - FEW 58 NAMUR Output Implementation

Liquipoint T FTW 31, FTW 32
Endress + Hauser 11
Compact instrumentation with FEW 58
To be used with isolating amplifiers acc. to NAMUR (IEC 60947-5-6)
Output signal jump from high to low current on limit (H-L-edge).
Signal transmission on a two-wire line:
H-L-edge 2.2 ... 6.5 mA / 0.4 ... 1.0 mA
When using a multiplex the cycle time must be set to a minimum of 2 s.
L00-FTW3xxxx-04-05-xx-en-005
Connecting the FEW 58 electronic insert.
Power supply (FEW 58)
Refere to "Technical Data" date sheet of the connected isolating amplifier acc. to
NAMUR (IEC 60947-5-6)
Signal on alarm
• Output signal with damaged sensor: < 1.0 mA
–
1
+
2
FEL 58
E
X
E X
I
IEC 60947-5-6 (NAMUR)IEC 60947-5-6 (NAMUR)