Sentek LMC-J-0040-1 Manual de usuario descargar pdf (Pagina 24)

IMJ00503 V3E.DOC Page 24 of 40 19.02.2009

For SSI interface operation, the wiring diagram is as follows:

Fig. 5: Wiring for SSI interface operation

4.7 Alarm Outputs

Parameter settings for alarm outputs can be made via Profibus. This function is

only available with the Profibus in active state.

Each of the two alarm outputs allows a given object or state to be monitored for

positive or negative excession of its limit values. This is achieved with the help of a user

definable distance threshold value (AC). Which way the particular alarm output will switch

depends on the mathematical sign of its hysteresis.

Rule:

Positive hysteresis: With increasing distance, the output switches from LOW to

HIGH, as soon as AC + AH/2 is exceeded, with decreasing

distance, it switches from HIGH to LOW, as soon the distance

value falls below AC – AH/2.

Negative hysteresis: With increasing distance, the output switches from HIGH to

LOW, as soon as AC + |AH/2| is exceeded, with decreasing

distance, it switches from LOW to HIGH, as soon the distance

value falls below AC – |AH/2|.

Power Supply

PLC

white

brown

green

yellow

gray

orange

blue

red

black

violet

white/brown

white/black

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Sentek LMC-J-0040-1 Manual de usuario Pagina 24