3-Wire Dc-Pnp (Electronic Insert Fel62) - Endress+Hauser Liquiphant FTL51B Operating Instructions Manual

Electrical connection
22
6.2.2

3-wire DC-PNP (electronic insert FEL62)

• Three-wire DC version
• Preferred in conjunction with programmable logic controllers (PLC), DI modules as per
EN 61131-2. Positive signal at the switch output of the electronics (PNP).
• 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.
Supply voltage
WARNING
L
Failure to use the prescribed power unit.
Unsafe device poses a potentially life-threatening hazard!
‣
The FEL62 must only be powered by power supply units with a safe galvanic isolation
(Europe: protective isolation, America: Class II power supply).
10 to 55 V
DC
In accordance with IEC/EN61010 a separate circuit breaker must be provided for the
device.
Power consumption
< 1W
Current consumption
Maximum 10 mA (no load)
The red LED flashes in the event of an overload or short-circuit. Check for an overload or
short-circuit every 5 seconds.
Load current
Maximum 350 mA with overload and short-circuit protection
Capacitance load
≤ 0.5 μF at 55 V, ≤ 1.0 μF at 24 V
Residual current
< 100 μA (with transistor blocked)
Residual voltage
< 3 V (with transistor switched through)
Output signal status
• OK status: switched through
• Demand mode: blocked
• Alarm: blocked
Liquiphant FTL51B
Endress+Hauser