Dc Connection, Relay Output (Electronic Insert Fel64 Dc) - Endress+Hauser Liquiphant FTL63 Operating Instructions Manual

Liquiphant FTL63
Endress+Hauser
6.3.4 DC connection, relay output (electronic insert FEL64 DC)
• Switches the loads via 2 potential-free change-over contacts
• 2 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 (can be
ordered as an option) with the housing closed.
Supply voltage
U = 9 to 20 V
DC
The device must be powered by a voltage supply categorized as "CLASS 2" or "SELV".
Comply with the following according to 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 power supply circuit.
Power consumption
P < 1.0 W
Connectable load
Loads switched via 2 potential-free change-over contacts (DPDT)
• I ≤ 6 A, U~ ≤ AC 253 V; P~ ≤ 1 500 VA, cos φ = 1, P~ ≤ 750 VA, cos φ > 0.7
AC
• I ≤ 6 A to DC 30 V, I DC ≤ 0.2 A to 125 V
DC
Additional restrictions for the connectable load depend on the selected approval. Pay
attention to the information in the Safety Instructions (XA).
According to IEC 61010, the following applies: Total voltage from relay outputs and power
supply ≤ 300 V
Electronic insert FEL62 DC PNP preferred for small DC load currents, e.g. connection to a
PLC.
Relay contact material: silver/nickel AgNi 90/10
When connecting a device with high inductance, provide spark quenching 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.
Behavior of output signal
• OK status: relay energized
• Demand mode: relay de-energized
• Alarm: relay de-energized
Terminals
Terminals for cable cross-section up to 2.5 mm
Overvoltage protection
Overvoltage category I
Electrical connection
2 (14 AWG). Use ferrules for the wires.
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