Behavior Of Switch Output And Signaling; 2-Wire Namur > 2.2 Ma/ < 1.0 Ma (Electronic Insert Fel68); Supply Voltage; Power Consumption - Endress+Hauser Liquiphant FTL64 Technical Information

Behavior of switch output
and signaling

Supply voltage

Power consumption

Behavior of output signal

16
MAX
MIN
 12 Switching behavior and signaling, electronic insert FEL67
MAX DIP switch for setting MAX safety mode
MIN DIP switch for setting MIN safety mode
RD LED red for alarm
YE LED yellow, switch status
GN LED green, operational status, device on
The switches for MAX/MIN on the electronic insert and the FTL325P switching unit must be
set according to the application. Only then is it possible to perform the functional test correctly.
2-wire NAMUR > 2.2 mA/ < 1.0 mA (electronic insert
FEL68)
• For connection to the isolating switch repeater as per NAMUR (IEC 60947-5-6), e. g. Nivotester
FTL325N from Endress+Hauser
• Signal transmission H-L edge 2.2 to 3.8 mA/0.4 to 1.0 mA as per IEC 60947-5-6 (NAMUR) on
two-wire cabling
• Functional testing without level change. A functional test can be performed on the device using
the test button on the electronic insert or using the test magnet (can be ordered as an option) with
the housing closed.
The functional test can also be triggered by interrupting the supply voltage or activated directly
from the Nivotester FTL325N.
U = 8.2 V
DC
Pay attention to the following as per IEC/EN61010-1: Provide a suitable circuit breaker for the
device.
NAMUR IEC 60947-5-6
• OK status: output current 2.2 to 3.8 mA
• Demand mode: output current 0.4 to 1.0 mA
• Alarm: output current 1.0 mA
RD YE GN
150 Hz
L+ 2
50 Hz
L+ 2
50 Hz
L+ 2
150 Hz
L+ 2
0 Hz
L+ 2
Liquiphant FTL64
1
L-
1 L-
1 L-
1 L-
1 L-
A0037696
Endress+Hauser