Endress+Hauser Liquiphant FTL41 Brief Operating Instructions page 19

Liquiphant FTL41
Behavior of the switch output and signaling
 17 FEL44 switching behavior, signaling LED
MAX DIP switch for setting the MAX safety
MIN DIP switch for setting the MIN safety
RD LED red for alarm
YE LED yellow, switch status
GN LED green, operational status, device on
6.3.3 2-wire NAMUR > 2.2 mA/< 1.0 mA (electronic insert FEL48)
• To connect to isolating amplifiers according to NAMUR (IEC 60947-5-6), e.g. Nivotester
FTL325N from Endress+Hauser
• To connect to isolating amplifiers of third-party suppliers according to NAMUR
(IEC 60947-5-6), a permanent power supply for the electronic insert FEL48 must be
ensured
• Signal transmission H-L edge 2.2 to 3.8 mA/0.4 to 1.0 mA according to NAMUR
(IEC 60947-5-6) on two-wire cabling
Supply voltage
U = 8.2 V
DC
Comply with the following according to IEC/EN61010-1: provide a suitable circuit
breaker for the device.
Power consumption
P < 50 mW
Endress+Hauser
RD
MAX
MIN
YE GN
3 4 5
3 4 5
3 4 5
3 4 5
3 4 5
Electrical connection
6 7 8
6 7 8
6 7 8
6 7 8
6 7 8
A0033513
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