A-3-1
Appendix 3
Wiring and setting up a door for
anti-passback
Local anti-passback
Local anti-passback enables you to designate Access Points as “In
Readers” or “OUT Readers”. When both an IN Reader and an OUT
Reader control the same door, the readers have to be wired and
configured in a certain way.
Wiring
1. The DO and ØV connections for the IN Reader should be wired
in parallel with the DO and ØV connections for the OUT
Reader, and should be connected to the door monitoring
switch.
2. The door lock relay for either the IN Reader or the OUT Reader
must be able to unlock the door. This means that with a fail
secure (power to unlock) mechanism, the relays must be wired
to the lock in parallel. With a fail safe (remove power to unlock)
mechanism, the relays must be wired to the lock in series.
3. The door exit control inputs (egress) must not be connected.
Configuring
1. Door monitoring should be Enabled on both the IN Reader and
the OUT Reader (select the check box labelled Enable Door
Contact Monitoring on the Monitoring Actions page in the
access point records).
2. Door Forced and Door Open should be Enabled on one reader
and Disabled on the other reader (it doesn’t matter which way
round). (The check boxes are Door Forced Alarm and Door
Open Alarm on the Monitoring Actions page in the access
point records.)
3. One reader must be configured as an IN Reader and the other
must be configured as an OUT Reader in the Local Anti-
Passback section of the Monitoring Actions page in the
access point records.
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