2-Wire Namur > 2.2 Ma/< 1.0 Ma (Electronic Insert Fel68) - Endress+Hauser Liquiphant FTL51B Operating Instructions Manual

Liquiphant FTL51B
Endress+Hauser
6.2.6 2-wire NAMUR > 2.2 mA/< 1.0 mA (electronic insert FEL68)
• For connection to isolation amplifiers as per NAMUR (IEC 60947-5-6), e.g. FTL325N
from Endress+Hauser.
• Signal transmission H-L edge 2.2 to 3.8 / 0.4 to 1.0 mA as per EN 50227 (NAMUR) on
two-wire cabling
• Functional testing without level change. Functional testing of the entire device can be
performed using the test button on the electronic insert or with the test magnet with the
housing closed.
The functional test can also be triggered by interrupting the supply voltage or activated
directly from the Nivotester FTL325N.
Supply voltage
8.2 V
DC
In accordance with IEC/EN61010 a separate circuit breaker must be provided for the
device.
Power consumption
< 50 mW
Output signal status
• Current OK status: min. 2.2 mA, max. 3.8 mA
• Current demand mode: min. 0.4 mA, max. 1.0 mA
• Current alarm: min. 0.4 mA, max. 1.0 mA
Terminal assignment
IEC 60947-5-6
8,2 V DC NAMUR
– +
>0,7
MAX
COM
>0,5
MIN
1
2
1 2
L- L+
Electrical connection
-
.
A0036066
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