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Inductive Pulse Input (IEI) Modul

   Bild IEI   

Inductive pulse inputs, together with an L.C. combination that is built into a meter, form an oscillating circuit. Pulses are generated when this circuit is periodically dampened by a wing wheel that is installed on the meter axis.

IEI Modules are active inputs and supply the detectors in the meter. The signal detector must be isolated (isolated from all ground and all potential voltage connections).

Because the highly sensitive oscillating circuit can be affected by a wire's inductivity and capacity, and by the influx of foreign signals in and around a wire, the secure function of this input can only be assured with a wire length of up to 30cm. For this reason inductive pulse detectors are, for all practical purposes, no longer used.




Functional block diagram

Functional block diagram IEI
IEI active



Pin assignment and package outline

Pin assignment IEI  
left
 
1  OUT  
2  
3  UCC
4  GND
 right 
 
1  UCC1
2  GND1
3  IN
4  IN



Recommended operating conditions and electrical characteristics

Galvanic isolation of input and output     yes
Voltage proof   > 4 kV
 
     MIN       TYP       MAX      UNIT  
Input:        
UCC1 12 V (DC)
ICC1 5 mA
UIN SS 5 V
Thershold Value 2,1 V
Hysteresis 0,5 V
Output:        
UCC 5 15 V (DC)
ICC 3 mA
Output complies with CMOS-Specifications



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Last Update 28.03.2019 at 14:51:38.