unsealed) longer than the programmed Shunt time (or Ext. shunt time, if
applicable).
Auto shunting & DOTL – If the areas assigned to the door are in access
(disarmed), shunting of the door will commence when the Door input 1 is
unsealed. No card or PIN is required. A DOTL alarm is generated if it is
left open longer than the programmed Shunt time.
Note: If the NAC is in IP Direct mode, then this option functions the same
as Input shunting & DOTL above.
Shunt time
Program the amount of time that the door may be opened for without causing an
alarm (shunted). This allows time for a user to pass through the door and shut it
again.
Enter a number and specify Sec for seconds or Min for minutes.
Ext. shunt time
Program the amount of time for the door to be shunted when a user, with the
“Long access” flag enabled, presents a valid card or PIN at the door reader.
Enter a number and specify Sec for seconds or Min for minutes.
Warning time
Program the amount of time for a relay to activate, to sound a warning device,
before the Shunt time (or Ext. shunt time, if applicable) expires.
Enter a number and specify Sec for seconds or Min for minutes.
Shunt until door closes
Select this option to ignore the programmed Shunt time (or Ext. shunt time),
and to shunt Door input 1 until the door closes (i.e. the door input is resealed).
Cancel shunt when door closes
For security reasons, it may be required to limit the shunt period as much as
possible in order to detect the door being opened again during the shunt time
(after the debounce time of approximately 2 seconds).
Select this option to use the programmed Shunt time (or Ext. shunt time) to
shunt Door input 1 and then to cancel the shunt when the door closes (i.e. the
door input is resealed).
Anti-passback options
The anti-passback options control the operation of the reader if a card or PIN is
used to enter the same region that the user is currently in.
This is valid only when a region is programmed for the door. See the “Region IN”
section on page 75 and the “Region OUT” section on page 75.
Anti-passback violation is reported to management software.
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