Endress+Hauser Liquiphant FTL51B - DC Connection with Relay Output (FEL64 DC)

Liquiphant FTL51B Electrical connection
Endress+Hauser 23
Behavior of switch output and signaling
MAX
RD YE GN
MIN
K
K
K
(L–)
(L–)
(L–)
I
L
<100 µA
I
L
3
3
3
1
1
1
L+
L+
L+
ΔU
ΔU
K
(L–)
<100 µA
3
1
L+
(L–)
<100 µA
3
1
L+
K
A0033508
 20 Behavior of switch output and signaling, electronic insert FEL62
MAXDIP 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
L
Load current switched through
5.2.4 Universal current connection with relay output (electronic insert FEL64)
• Switches the loads via 2 potential-free changeover contacts
• Two galvanically isolated changeover contacts (DPDT), both changeover contacts switch
simultaneously
• 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 (can be ordered as an
option) with the housing closed.
L
WARNING
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!