Soliphant M FTM50, FTM51, FTM52
6 Endress+Hauser
Output
Galvanic isolation FEM51, FEM52, FEM55:
Between sensor and power supply
FEM54:
Between sensor, power supply and load
FEM57, FEM58:
See switching unit connected
Switch behaviour Binary
Power-on behaviour When switching on the power supply the output is set to "signal on alarm".
After a maximum of 3 s it switches to the correct output signal.
Fail-safe mode Minimum/maximum residual current safety selectable on electronic insert.
(with FEM57 only at Nivotester)
MAX = maximum safety:
The output switches safety-oriented when the fork is covered (signal on alarm)
For use with overfill protection for example
MIN = minimum safety:
The output switches safety-oriented when the fork is uncovered (signal on alarm)
For use with running empty protection for example
Switching delay 0.5 s when the sensor is covered
1.5 s when the sensor is uncovered (1.0 s for short fork)
Can be changed to 5 s for covering and uncovering.
Ex specifications FEM51, FEM52, FEM54, FEM55:
– Explosion protection for explosive gas-air mixtures:
Ex d, Ex de, XP, intrinsically safe sensor circuit Ex ia, IS
– Explosion protection for explosive dust-air mixtures:
Dust-Ex, DIP
FEM57, FEM58:
– Explosion protection for explosive gas-air mixtures:
Ex ia, IS (Intrinsically safe power supply + intrinsically safe sensor circuit)
– Explosion protection for explosive dust-air mixtures:
Ex iaD, IS (Intrinsically safe power supply + intrinsically safe sensor circuit)
FEM51 electronic insert (AC 2-wire)
Power supply Supply voltage: 19...253 V AC
Power consumption: < 1.0 W
Residual current consumption (I
R
): < 4 mA; 5.5 mA for short fork (in switch-off moment < 1 mA for 100 ms)
Short-circuit protection
Separation voltage: 3.7 kV
FEM51 overvoltage protection: overvoltage category III
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