Assa ELECTRIC LOCK - Manual (Page 21)

Rev. A.1, 10/99 Page- 19
The locks may be immediately released by the associated panel toggle. Optionally, a remote
release switch may be provided at the door such as a card reader, keyswitch etc. An exit device
is provided for delayed egress. Pressing the exit device starts a 15 or 30 second irrevocable
delay after which the lock releases. The lock remains released until reset by a switch (usually a
keyswitch at the door).
Methods of interwiring the LCP board with the XDT timers at the door can become very
complicated. The reason is that both products have been designed to perform numerous
functions. Combining them therefore, can be done in a nearly endless number of ways. In so
doing, it's easy to miss some point that can lead to improper operation, false alarms etc. One
particular note is that if you employ the KP1 or MK1 switch bypass option, you will not
completely bypass the toggles. The toggle itself will not open the door but (when depressed)
will put the door into free egress mode rather than delayed exit mode. We advise not using
this option
with delayed exit.
To simplify this process, we advocate two different connection schemes which depend on
whether the bypass function of the XDT board is to be used or not. The bypass function
allows the use of a momentary switch closure to release the lock immediately for authorized
entry or exit with the released state being held for five seconds. The bypass function not only
provides the five second release time (and therefore replaces an outboard timer) but
suppresses the XDT board's alarm outputs and delayed exit function during the 5 second
period. Since the lock is being "legally" released, it's inappropriate to initiate a delayed exit
sequence or send out alarm signals.
FIG. 9: GENERAL LCP/XDT CONNECTIONS WITHOUT USE OF BYPASS
NO
NC
C1
C2
C3
+
LS
BP
FE
IN
RS
NC
NC
NO
NO
0V (NEG)
+V
RESET (NC)
IN
IT
IA
T
E
(
N
C
)
F
R
O
M
PO
W
E
R
SU
PPL
Y
FAIL SAFE
LOCK
LOCAL
ALARM
MOV
LCP "Y" TERMINAL
DOOR/LOCK STATUS
SWITCH. CLOSED
WHEN SECURE.
COM NC
NO
LCP "L" TERMINAL
LCP "E" TERMINAL
LOCAL RELEASE SWITCH
LCP "S" TERMINAL
XDT BOARD
IF A LOCAL RELEASE SWITCH IS NOT
USED, LCP "L" CONNECTS DIRECTLY
TO "C3" AND TO TOP OF INITIATE SWITCH;
LCP "E" CONNECTS TO "FE".