Output Signal - Endress+Hauser Liquiphant FTL51B Operating Instructions Manual

Liquiphant FTL51B
Endress+Hauser
2. Switch off the supply voltage before connecting the device.
3. Remove the housing cover.
4. Guide cable through the gland. Preferably use a twisted, shielded two-wire cable.
5. Connect the device in accordance with the following diagram.
6. Screw down housing cover.
7. Switch on supply voltage.
Electronic insert
2-wire AC (FEL61)
Two-wire AC version
Switches the load directly into the power supply circuit via an electronic switch.
3-wire DC-PNP (FEL62)
Three-wire DC version
Switches the load via the transistor (PNP) and separate connection e.g. in conjunction
with programmable logic controllers (PLC), DI modules as per EN 61131-2.
Universal current connection, relay output (FEL64)
Universal current version with relay output
Switches the loads via 2 potential-free changeover contacts.
Direct current connection, relay output (FEL64DC)
Switches the load via 2 potential-free changeover contacts
PFM output (FEL67)
For separate switching unit
PFM signal transmission; current pulses are superimposed on the power supply along
the two-wire cabling.
2-wire NAMUR > 2.2 mA/< 1.0 mA (FEL68)
For separate switching unit
Signal transmission H-L edge 2.2 to 3.8 / 0.4 to 1.0 mA as per EN 50227 (NAMUR)
on two-wire cabling.
2-wire density (FEL60D) for density measurement
1) Ordering information: Product Configurator, order code for "Output"
2) Ambient temperature –60 °C (–76 °F) optionally available for order. The low-temperature electronic
inserts are marked LT.
3) Ambient temperature –52 °C (–62 °F) optionally available for order. The low-temperature electronic
inserts are marked LT.
14.2.2

Output signal

Switch output
Preset switching times can be ordered. The following ranges can be ordered for point level
switches without communication (AC 2-wire, relays, DC-PNP, PFM, NAMUR).
• 0.5 seconds when the fork is covered and 1.0 seconds when it is uncovered (factory
setting)
• 0.25 seconds when the fork is covered and 0.25 seconds when it is uncovered (fastest
setting)
• 1.5 seconds when the fork is covered and 1.5 seconds when it is uncovered
• 5 seconds when the fork is covered and 5 seconds when it is uncovered
Digital output
Bluetooth® wireless technology (available as an optional extra)
The device has a Bluetooth® wireless technology interface. Device and diagnostics data can
be read out using the free "SmartBlue" app.
Technical data
1)
Description Option
→  19 A1
2)
→  22 A2
2)
→  24 A4
2)
→  26 A3
3)
→  28 A7
3)
→  31 A8
→  32 GA
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