Issue
Will the Bond Sensor Input Channel contribute to the Door Forced and Door Ajar alarms? If so, does it have to be in conjunction with the Door Switch Input Channel?
Environment
Continuum Access Control Products
CX9900
CX9680
AC1, AC1A, AC1Plus
ACX5720, ACX5740
CX9702
ACX781
Cause
Not sure how the Bond Sensor works in relation to the Door Switch and the various Door Alarm states.
Resolution
BondFailure is an attribute of the Door object that represents a fault with the Bond Sensor.
The way this works is if Valid Access = True and the Door Switch = Open and the Bond Sensor = Open, then BondFailure = False.
If Valid Access = False or the system sees the Door Switch = Closed but the Bond Sensor = Open then you will get a BondFailure = True.
This is another attribute (BondFailure) that can be monitored with an AlarmEnrollment in addition to the DoorForced and DoorAjar attributes. A Door Switch needs to be used for the Bond Sensor to operate correctly, otherwise BondFailure will always be False after a ValidAccess if there is no Door Switch value.
Note: The actual value of the BondSensor attribute in the Door object may not seem to update properly if monitoring with a ListView. For this to show the correct BondSensor value make sure that the attribute Source is set to "Live" instead of the default "Database".
Note2: A bond senor (usually an output from a maglock) should not be used as an alternative to a door switch, as it does not give indication of the door position.
