Liquiphant FTL64
Endress+Hauser 7
2-wire AC (electronic insert FEL61)
• Two-wire AC version
• Switches the load directly into the power supply circuit via an electronic switch; always connect in
series with a load
• Functional testing without level change
A functional test can be performed on the device using the test button on the electronic insert.
Supply voltage
U = 19 to 253 V
AC
, 50 Hz/60 Hz
Residual voltage when switched through: typically 12 V
Observe the following as per IEC/EN61010-1: Provide a suitable circuit breaker for the device,
and limit the current to 1 A, e. g. by installing a 1 A fuse (slow-blow) in the phase (not the
neutral conductor) of the supply circuit.
Power consumption
S ≤ 2 VA
Current consumption
Residual current when blocked: I ≤ 3.8 mA
The red LED flashes in the event of an overload or short-circuit. Check for an overload or short-
circuit every 5 s. The test is deactivated after 60 s.
Connectable load
• Load with a minimum holding power/rated power of 2.5 VA at 253 V (10 mA) or 0.5 VA at 24 V
(20 mA)
• Load with a maximum holding power/rated power of 89 VA at 253 V (350 mA) or 8.4 VA at
24 V (350 mA)
• With overload and short-circuit protection
Behavior of output signal
• OK status: load on (switched through)
• Demand mode: load off (blocked)
• Alarm: load off (blocked)
Terminal assignment
Always connect an external load. The electronic insert has integrated short-circuit protection.
!
>0,5
COM
NL1
1
2
MIN
MAX
>0,7
U 19...253 V AC
I max: 350 mA
~
~
1 A
L1 NPE
K
1 2
A0036060
2 2-wire AC, electronic insert FEL61
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