Universal Current Connection With Relay Output (Electronic Insert Fel64) - Endress+Hauser Liquiphant FTL51B Operating Instructions Manual

Electrical connection
1) See graphic in the "Ambient temperature range" section
24
Functional test
→  38
6.2.3 Universal current connection with relay output (electronic
insert FEL64)
• Universal current version with relay output
• Switches the loads via 2 potential-free changeover contacts
• Two galvanically isolated change-over contacts (DPDT), both change-over contacts
switch simultaneously
• 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.
WARNING
L
In the event of an error, the electronic insert can exceed the limit temperature for
touchable surfaces, resulting in a risk of burns.
‣
Do not touch the electronics in the event of an error!
Supply voltage
19 to 253 V / 19 to 55 V
AC
In accordance with IEC/EN61010 a separate circuit breaker must be provided for the
device.
Power consumption
< 2 W
Connectable load
Loads switched via 2 potential-free changeover contacts (DPDT)
1)
I AC ≤ 6 A (Ex de 4 A), U~ ≤ AC 253 V; P~ ≤ 1500 VA, cos φ = 1, P~ ≤ 750 VA, cos φ >
0.7
1)
I DC ≤ 6 A (Ex de 4 A) to DC 30 V , I DC ≤ 0.2 A to 125 V
According to IEC 61010, the following applies: total of voltages of relay outputs and power
supply ≤ 300 V
Electronic insert FEL62 DC PNP is preferred for low DC load currents (e.g. when
connecting to a PLC)
Relay contact material: silver/nickel AgNi 90/10
When connecting high-inductance devices, provide a spark arrester to protect the relay
contact. A fine-wire fuse (depending on the connected load) protects the relay contact in
the event of a short-circuit.
Both relay contacts switch simultaneously.
Output signal status
• OK status: relay energized
• Demand mode: relay de-energized
• Alarm: relay de-energized
DC
Liquiphant FTL51B
Endress+Hauser