Endress+Hauser Liquiphant FTL41 Brief Operating Instructions page 19

Liquiphant FTL41
Behavior of the switch output and signaling
MAX
MIN
 17 FEL42 switching behavior, signaling LED
MAX DIP switch for setting the MAX safety
MIN DIP switch for setting the MIN safety
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
5.4.2 Universal current connection with relay output (electronic insert FEL44)
• Switches the loads via 2 potential-free changeover contacts
• Two separate changeover contacts (DPDT)
WARNING
L
An error at the electronic insert can cause the permitted temperature for touch-safe
surfaces to be exceeded. This presents a risk of burns.
‣
Do not touch the electronics in the event of an error!
Supply voltage
U= 19 to 253 V / 19 to 55 V
AC
Observe 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
phase (not the neutral conductor) of the supply circuit.
Endress+Hauser
RD YE GN
L+
L+
L+
L+
L+
DC
I
L
1 3
ΔU
<100 µA
1 3
I
L
1 3
ΔU
<100 µA
1 3
<100 µA
1 3
Electrical connection
(L–)
K
(L–)
K
(L–)
K
(L–)
K
(L–)
K
A0033508
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