Lock relay 1
– Unlocks the door.
Lock relay 2
– Reserved for future use.
The door’s lock type, and inputs and relays are programmed in CTPlus on the
Hardware
tab for the door. See the “Programming hardware options” section on
page 61 for instructions.
The following timers can be defined:
Pre-Lock time
– Once the door open input (
Door input 1
) has been
sealed, the NAC waits for the pre-lock time to expire before locking the
door. If the door open input unseals during the pre-lock time, the door is
deemed open and the pre-lock timer is cancelled. The shunt continues
during the pre-lock time.
Post-lock time
– The post-lock time allows time for a lock to fully engage.
After the post-lock time has expired, the door is deemed secure, and the
shunt is cancelled. If the door open input unseals during the post-lock
time, the door is deemed open and the post-lock timer is cancelled. The
shunt continues during the post-lock time.
Note:
There are also two roller door specific timers that are reserved for future
use.
The timers are programmed in CTPlus on the
Access
tab for the door. See the
“Programming access options” section on page 66 for instructions.
Example door operation scenarios
Simple door unlock with no inputs
At the start of the access time, the door is unlocked (via
Lock relay 1
) and is
locked at the end of the access time. There are no inputs assigned. At the end of
the access time, the door is deemed to be closed and secure.
There is no shunting, forced door or DOTL support.
Door unlock with one input for open door
At the start of the access time, the door is unlocked (via
Lock relay 1
). If the
door is opened within the access time (i.e.,
Door input 1
is unsealed), then the
shunt timer starts. When the door is subsequently closed, the pre-lock timer
starts. After the pre-lock time, the door is deemed closed. At that time, maglocks
can be locked. After the post-lock time, the shunt is cancelled, and the door is
deemed secure.
If the shunt timer expires while the door is open, or expires during the pre-lock or
post-lock time, then a normal alarm or DOTL occurs.
Interlocking doors
Interlocking is a method that stops two or more doors from being opened at the
same time. Interlocking may be used in a vault, for example.
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