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

Liquiphant FTL51B
Endress+Hauser
Behavior of switch output and signaling
MAX
MIN
 20 Behavior of switch output and signaling, electronic insert FEL61
MAX DIP switch for setting MAX safety mode
MIN DIP switch for setting MIN safety mode
RD LED, red, for warning or alarm
YE LED, yellow, switch status
GN LED, green, operational status, device on
I Load current switched through
L
6.2.2

3-wire DC-PNP (electronic insert FEL62)

• Three-wire DC version
• Preferably in conjunction with programmable logic controllers (PLC), DI modules as per
EN 61131-2. Positive signal at switch output of electronics module (PNP)
• 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 with the housing closed.
Supply voltage
WARNING
L
Failure to use the prescribed power unit.
Risk of fatal injury due to electric shock!
‣
The FEL62 may only be powered by devices with safe galvanic isolation, as per
IEC 61010-1.
U =10 to 55 V
DC
Pay attention to the following as per IEC/EN61010-1: Provide a suitable circuit
breaker for the device, and limit the current to 500 mA, e. g. by installing a 0.5 A fuse
(slow-blow) in the line (not the neutral wire) of the supply circuit.
Power consumption
P ≤ 0.5 W
Current consumption
I ≤ 10 mA (without load)
The red LED flashes in the event of an overload or short-circuit.
RD YE GN
L1 1
<3.8 mA
L1 1
L1 1
<3.8 mA
L1 1
<3.8 mA
L1 1
Electrical connection
I
L
2 (N)
U
K
2 (N)
K
I
L
2 (N)
U
K
(N)
2
K
2 (N)
K
A0031901
19