PN# 500-14900
Page 8
Rev. D, 06/11
In ordinary delayed exit, the fail safe lock releases after the delay and remains released until the
reset switch performs relocking. In facilities where a threat exists from the outside, the question
arises as to security against unauthorized entry after the release delay has expired. It may be
that the delayed exit cycle was initiated by mistake or as an act of vandalism. It may take some
time for a guard to arrive at the door to effect relocking and there is always some risk that
security procedures will fail, despite the alarm signals, and the door will be left in this released
state for an extended period of time.
If a latch equipped panic bar is present on the door, some security will still exist against
unauthorized entry. However, many doors will employ a non latch equipped initiate device such
as Securitron's Touch Sense Bar. Also, any door which combines delayed exit with controlled
entry (such as from a card reader) must depend only on the fail safe lock for entry security.
The XDT can be set so that after the release delay expires, the fail safe lock remains
engaged so long as the initiate device is not being pressed. When the initiate device is
pressed, the lock immediately releases but resecures after the initiate device is no
longer being pressed. This preserves security from the outside. To implement this,
simply run a wire from terminal DC to terminal IN. This is the only use for terminal DC.
We believe that this method of operation meets the intent of all exit delay codes but it is
certainly possible that conservative safety officials might reject it, so we advise that specific
approval be sought for this variation.
8. MAGNACARE
LIFETIME REPLACEMENT WARRANTY
For warranty information visit: www.securitron.com/en/site/securitron/About/MagnaCare-Warranty/
IN
RS
DC
