Behavior Of Switch Output And Signaling; Pfm Output (Electronic Insert Fel67); Supply Voltage; Power Consumption - Endress+Hauser Liquiphant FTL64 Technical Information

Behavior of switch output
and signaling

Supply voltage

Power consumption

Behavior of output signal

14
MAX
MIN
 10 Behavior of switch output and signaling, electronic insert FEL64 DC
MAX DIP switch for setting MAX safety mode
MIN DIP switch for setting MIN safety mode
RD LED red for alarm
YE LED yellow, switch status
GN LED green, operational status, device on

PFM output (electronic insert FEL67)

• For connecting to the Nivotester FTL325P and FTL375P switching units from Endress+Hauser
• PFM signal transmission; pulse frequency modulation, superimposed on the power supply along
the two-wire cabling
• Functional testing without level change:
• A functional test can be performed on the device using the test button on the electronic insert.
• The functional test can also be prompted by disconnecting the supply voltage or triggered
directly by the Nivotester FTL325P and FTL375P switching unit.
U = 9.5 to 12.5 V
DC
Reverse polarity protection
Observe the following as per IEC/EN61010-1: Provide a suitable circuit breaker for the device.
P ≤ 150 mW with Nivotester FTL325P or FTL375P
• OK status: MAX operating mode 150 Hz, MIN operating mode 50 Hz
• Demand mode: MAX operating mode 50 Hz, MIN operating mode 150 Hz
• Alarm: MAX/MIN operating mode 0 Hz
RD YE GN
3 4 5
3 4 5
3 4 5
3 4 5
3 4 5
Liquiphant FTL64
6 7 8
6 7 8
6 7 8
6 7 8
6 7 8
A0033513
Endress+Hauser