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Rev. A.1, 10/99 Page- 9
controlled by the panel zone. Not also that Securitron can supply additional breakered output
boards for the power supply (part #CCB-8).
If the “PB” option is supplied, (see Sections 2.2 and 5.2) power supply DC neg does not
connect to the “-” terminals on the boards but rather to a flying black lead coming from the push
button switch. Note that the board “-” terminals will all be pre-wired to the button when this
option is present. Pressing the button breaks DC negative which releases all fail safe locks.
The button does not break +V so as to preserve the capability of multiple breakered inputs.
Finally, note that for a standard board, the 12 position terminal strip that includes the four “+”
terminals and "-" requires field wiring to only these terminals. The other terminals on the
strip are either prewired (R and A) or used only if options are supplied (see section 5 for option
wiring). All the rest of the field wiring is on the second 12 position terminal strip that includes the
S, L, and E terminals for zones 1 through 4. If the panel has been delivered in a wall mount
NEMA 1 cabinet, the installer does not wire directly to the boards but rather to a channel mount
terminal strip in the base of the enclosure. The terminal identification, however, is the same.
4.2 FAIL SAFE LOCKS
Figure 3 shows 5 different ways of wiring fail safe locks to the panel board. The exact wiring
done will depend upon the equipment utilized and the requirements of the job. All panel to lock
wiring concerns only 3 panel terminals: S, L and E for the respective zone (4 zones per board).
Check the description of each wiring method to see which (if any) applies to your installation.
Later in the manual, other typical wiring schemes will be shown.
TYPE 1 FAIL SAFE
The type 1 drawing is the simplest. It utilizes a fail safe lock controlled directly by the panel with
no other release devices employed. No lock or door status monitoring switch is used.
As the drawing shows, lock power comes from the L terminal and the S terminal is connected to
the power wire at the lock. With this connection, when the lock is powered, the S terminal will
receive +V which will illuminate the green side of the bicolor LED. When the lock is released
from the panel toggle, the bicolor will be off and the toggle bat yellow LED will come on. Since
the door is not monitored, the red violation LED should never come on and sound the Sonalert.
An exception would be if the power wire to the lock was cut so that +V could not reach the S
terminal when the lock is powered.
TYPE 2 FAIL SAFE
This connection employs a lock or door status switch which is closed when the lock or door is
secure. Lock status provides superior security as the door can be closed but the lock may not
be fully secure. The status switch connects to the S terminal and therefore illuminates the green
side of the bicolor when the door is secure. When the lock is released from the toggle, power is
removed from the status switch so the green indicator goes out and the yellow toggle bat
indicator comes on. If, however, the status switch opens (because the lock becomes insecure
or the door is open) at a time when the lock is powered, this is the violation condition and after a
2 second delay, the bicolor will turn red and the Sonalert will sound. After the door has been
resecured, the bicolor will show orange as both the red and green sides will be on. The panel is
then reset by momentarily pressing the reset toggle. This will extinguish the Sonalert and
restore green condition on the indicator.
On some installations, both a lock and door status switch may be employed. They should be
connected in series so that the lock must be reporting secure and the door must be closed
before the green indicator will come on. In theory the lock status switch cannot report secure if
the door is open. However, combining the 2 switches enhances security in case the lock status
switch fails or is tampered with.