User's Manual

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Normal State:
This state indicates a NC external device is in normal condition.
Activate State:
This state indicated the NC external device is triggered i.e. become open circuit.
Open Circuit:
This indicates the line connection to the external device has been broken/open circuit.
Short Circuit:
This indicates that the line connection is short circuit.
5.4 End of Line Resistor
For operation in the line Supervised Mode, end of line resistors is required. This
establishes different voltages at the input depending on the device status and line fault
conditions. The input circuit compares the voltage differential on the line to internal
thresholds to determine the line status. The end of line resistor value shall be 10Kohm.
The figure below shows the typical connection for Exit Button 1 and Door Sensor 1. It
also applies to inputs 5 to 8.