Roger PRT62, Installation And Programming Manual, Page: 8 / 32

PRT62 v1.1 fv74 EN Rev.E.DOC 10/25/2007
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4.5 Alarms
The PRT62 reader has been designed to detect and indicate the following alarm types: Forced Door , Prealarm
and Door Ajar . The alarm signaling is carried out over the dedicated output line ( Alarm Output ) and
optionally on the internal buzzer (check the Door Alarm Indication on Internal Buzzer option in section
5.3). The device uses different alarm signal modulation, depending on alarm type (see table below). Alarm
duration is ~3 minutes, regardless of alarm type. Each alarm can be stopped manually within 3 minutes from
its start by presenting any valid card registered in the reader. Additionally, a Door Ajar alarm is stopped as
soon as the door is closed. If more than one alarm is triggered, the reader indicates the alarm with the highest
priority. The Forced Entry and the Door Ajar alarms will occur only if the reader operates with a Door Open
Contact.
Alarm Signaling Methods
Alarm type Priority
Signaling method Alarm situation (event)
Forced
Door
High By cycles with the following sequence:
Active - 4 sec., Pause - 4 sec.
The door opened without use of a
valid card.
Prealarm Medium By cycles with the following sequence:
Active - 1 sec., Pause - 1 sec.
Detection of 3 consecutive
attempts to read an unregistered
(unknown) card.
Door Ajar Low By cycles with the following sequence:
Active - 1 sec., Pause - 1 sec., Active - 1 sec.,
Pause - 5 sec.
After access has been granted
and the door opened it is left ajar
for the time exceeding the door
open time setting (see the C2C3
parameter in section 5.3 Installer
Programming Mode).
Note: The Modulation methods listed above are used either for the Alarm Output line or the Internal Buzzer
(if configured).