RBH Access Technologies Integra32 - Page 29

Chapter 3
Input & Output Connections
RBH Access Technologies Inc. Integra32
™
Hardware Guide
25
Normally Closed, One Resistor
Loop Resistance
State
Short
Trouble
1k
Restore
Open Circuit
Alarm
Normally Closed, Two Resistor
Loop Resistance
State
Short
Trouble
1k
Restore
2k
Alarm
Open Circuit
Trouble
This circuit provides a high degree of supervision and detects both short and open circuit
fault conditions. Use this circuit in high security applications.