UNC100 Integra/Axiom Light Hardware Manual V1.3 Page
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RBH Access Technologies Inc.
Supervised Inputs
The UNC100 has 4 fully supervised inputs. Each input is individually programmable from the PC Each input
has four states: Restore, Alarm, Trouble, and Illegal. Trouble is reported if a short or break is detected on
a supervised circuit and illegal is reported if the measured loop resistance lies between valid states. For
example, if the circuit type is programmed as “2 resistors normally closed”, 1k represents a restored state
and 2k represents an alarm state. If the loop resistance changes by more than 15% but not enough to
enter the next state, an illegal state is reported.
Input (I/P) Circuit Types
The UNC-100 supports seven different input circuit types ranging from no resistor for low security
applications to two resistor normally closed circuits where the highest security is required.
This circuit provides a high degree of supervision and detects both short and open circuit fault conditions.
Use this circuit in high security applications.
Normally Closed, No Resistor
Loop Resistance
State
Short
Restore
Open Circuit
Alarm
Normally Open, No Resistor
Loop Resistance
State
Short
Alarm
Open Circuit
Restore
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
