Endress+Hauser Liquiphant FTL51B - Page 34

Electrical connection Liquiphant FTL51B
34 Endress+Hauser
Behavior of switch output and signaling
MAX
RD YE GN
MIN
1
1
1
1
1
2
2
2
2
2
L+
L+
L+
L+
L+
2.2...3.8 mA
0.4...1.0 mA
2.2...3.8 mA
0.4...1.0 mA
< 1.0 mA
L-
L-
L-
L-
L-
A0037694
 28 Behavior of switch output and signaling, electronic insert FEL68
MAXDIP 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 Bluetooth module must be ordered separately, including the required battery, for use
in conjunction with electronic insert FEL68 (2-wire NAMUR).
5.2.8 Bluetooth module VU121 (optional)
The Bluetooth module can be connected via the COM interface to the following electronic
inserts: FEL61, FEL62, FEL64, FEL64 DC, FEL67, FEL68 (2-wire NAMUR). The Bluetooth
module must be ordered separately, including the required battery, for use in conjunction with
electronic insert FEL68 (2-wire NAMUR).
 For more information, see Operating Instructions.
5.2.9 LED module VU120 (optional)
A brightly lit LED indicates the operational status (switch status or alarm status) in green,
yellow or red. The LED module can be connected to the following electronic inserts: FEL62,
FEL64, FEL64DC.
 For more information, see Operating Instructions.