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Rev. A.1, 10/99 Page- 5
It is, of course, possible to assign a different function to the additional lights. They can be made
to illuminate when any sort of external switch closes. Examples could include an installation
where lock status and door status are separately monitored. If it is desired that the pulsing
Sonalert not accompany the illumination of a yellow LED, it is a simple matter to disconnect the
+V line to the Sonalert's pulse input.
2.4 SWITCH BYPASS KEYSWITCH (OPTIONS "KP1", "KP2", "MK1", "MK2")
With this option, an alternate action keyswitch is mounted on the panel face with an LED
indicator to show its position. When the indicator is on, the panel is in the normal operating
mode. All the toggles function to release and secure the locks. When the keyswitch is turned,
the panel is bypassed. This means that all locks are immediately secured (if some had been
released from the toggles) and the toggles will no longer release any lock. If fail safe locks are
being used and the PB (emergency release) option has been supplied, the push button will also
not be able to release the locks. The purpose for this is allow a panel operator to leave the
panel for a time without the danger that an unauthorized person will release some of the locks.
There are 4 possible configurations for the switch bypass option. KP calls out a tubular Ace
type keyswitch. MK calls out a mortise cylinder type keyswitch wherein the user supplies the
cylinder and the unit is delivered with a hole for mounting the cylinder. Rear bracketry includes
the actual switch which is operated by the cylinder cam. This permits the user to key the panel
bypass keyswitch into his facility keying system. The KP1 and MK1 versions are for fail safe
locks. When they are in the bypass position, power is sent to the locks in a manner that
bypasses the toggles and emergency release button (if one is present). The panel continues to
monitor the doors but power cannot be removed from the locks by the panel. The KP2 and
MK2 versions are for fail secure locks. When they are in the bypass position, power is
removed from the panel boards so that the locks stay secure. With this approach, the panel
stops monitoring the locks as the boards have been unpowered. Note that for the fail secure
version, an emergency release button is not available.
Do not employ this option in a delayed exit installation with Securitron’s XDT board. It will not
work properly. See Section 5.3.
2.5 MOMENTARY SWITCHES (OPTION "MOM")
This option supplies spring loaded momentary toggle switches for lock control. The normal
position is lock secure. The switches are momentarily pressed to release the lock. Note that
when momentary switches are supplied, the yellow toggle bat LED indicator is eliminated due to
unavailability from the switch manufacturer. All other features of the panel are the same. Since
"toggle bat indicator on" annunciates the same condition as "bicolor off", the monitoring
performance of the panel is not lessened. Note that on a special order basis, momentary and
alternate switches can be mixed on the same panel.
2.6 HIGH VOLUME PUSH BUTTONS (OPTION "HT")
In “normal” use, toggle switches are appropriate for the LCP. They have the advantage of
showing their position by facing up (locked) or down (released). Toggles, however, are not
intended for high traffic use. Their typical operating life is roughly 30,000 cycles. This is well
adequate for most applications when the toggles are used occasionally but where the panel
switches are being continuously employed for letting people through doors (this is often a
momentary application), the “HT” option substitutes push button switches for the toggles. The
push button switches have many times the cyclic life of the toggles. They also include internal
indicators which operate just as the yellow bat indicators do on the toggles. The use of the “HT”
option does not change any panel wiring procedures and note that the option “MOM” can be
combined with the push button “HT” option to yield momentary operation rather than the
standard alternate action.