Linear eMerge 50P - Normally Open Series Resistor Input Circuits; Normally Open Unsupervised Input Circuits

Connecting Readers, Inputs, Outputs, and Temperature Sensors
233190 X3 Linear LLC 19 May 2013
The three states of the normally open parallel resistor input circuit are read
according to the values in the table below.
Input State
Resistance Values
Normal 1k Ohms
Alarm 0k Ohms
Open No current (∞ Ohms)
Normally Open Series Resistor Input Circuits
Figure 16. Normally open series resistor input circuit.
The three states of the normally open series resistor input circuit are read
according to the values in the following table.
Input State
Resistance Values
Normal No current (∞ Ohms)
Alarm 1k Ohms
Short 0k Ohms
Normally Open Unsupervised Input Circuits
Figure 17. Normally open unsupervised input circuit.
NO Unsupervised
NO Series Resistor