Assa ELECTRIC LOCK manual Field Installation of Bypass Keyswitch Fail Safe Locks

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Rev. A.1, 10/99

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keyswitch is in the NO position. Be sure that the keyswitch contacts are of adequate capacity to switch all the power of the panel.

FIG. 13: FIELD INSTALLATION OF BYPASS KEYSWITCH (FAIL SAFE LOCKS)

ALTERNATE ACTION

SPDT KEYSWITCH

NO

+V POWER

C

NC

TO DC NEG

INDICATOR

PANEL BOARD

PANEL BOARD

OPEN PAD

OPEN PAD

E4 L4

L1 S1

E4 L4

L1 S1

THIS CONNECTION REQUIRES SOLDERING. IDENTIFY THE 2 OPEN PADS ON EACH BOARD NEXT TO

THE TERMINALS AS SHOWN. PADS ARE INTERCONNECTED ON ALL BOARDS TO THE KEYSWITCH N.O. TERMINAL AS SHOWN.

NEXT BOARD ETC

Note that when a bypass keyswitch is used together with an emergency release pushbutton (option “PB”), the push button is bypassed at the same time the toggles are. This is done by using a two pole keyswitch. One pole operates as is shown in Figure 13 above. The second pole bypasses the PB contacts which break the negative DC input to the panel. This is to maintain the security of the locks regardless of what is done to the panel controls until the keyswitch is again returned to the “normal” position.

5.5 SWITCH BYPASS WIRING (OPTIONS "KP2" OR "MK2" FAIL SECURE LOCKS)

The option comes pre-wired for whichever type of keyswitch has been chosen. However, if the panel has been supplied without this option, it may be added in the field. Refer to Figure

14.The keyswitch removes power from all the terminal boards. This bypasses the ability of the toggles to release the locks. The panel's monitoring capability will also be disabled but the purpose of the keyswitch is to shut down the panel when the operator is absent so this is not an issue. Note that the keyswitch indicator (which operates on the same voltage) indicates that the panel is operating normally. Be sure that any field installed keyswitch has contacts of sufficient capacity to break all of the panel power. Also, make sure you terminate the lock negative wires to the panel “-” terminals rather than directly to the power supply or this will not work.

The reason that this option is set up to break the negative circuit instead of the positive is to preserve the ability to run separate +V inputs to each board zone. This can allow separately breakered inputs from a Securitron power supply or the installation of upstream switches.

If the installation includes remote release switches, an important change must be made from the lock wiring in Figure 4. Assuming that you wish the remote release switch to continue to function when the panel is bypassed, it will not if the job is wired as is shown in type 3 or type 4 hookups in Figure 4. The reason is that keyswitch bypass will remove DC negative from the panel and hence from the return of the fail secure locks. The solution is to run an extra DC negative wire from the power supply to the remote switch common. The wire is upstream of

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Contents Panel Power Additional Monitoring Lights Option AMSwitch Bypass Wiring Option KP2 or MK2 Powered Switching Devices AT the DoorsSwitch Bypass Wiring Option KP1 or MK1 MASTER/SLAVE Panels for Fail Safe LocksPanel Power GeneralLock Control MonitoringAudible Alarm and Alarm Reset Summary of INDICATOR/SONALERT StatesEmergency Release Option PB OptionsSilence Latch Option SL High Volume Push Buttons Option HT Switch Bypass Keyswitch Options KP1, KP2, MK1, MK2Momentary Switches Option MOM Board Terminal Descriptions Panel Board OverviewWiring Power Input WiringPower Supply to LCP Board Wiring Type 2 Fail Safe Fail Safe LocksType 1 Fail Safe Fail Safe Lock Connections Type 5 Fail Safe Magnalock Type 3 Fail SafeType 4 Fail Safe Fail Secure LocksFail Secure Lock Connections Type 3 Fail Secure Type 1 Fail SecureType 2 Fail Secure Powered Switching Device AT Door Wiring DK-26 + Magnalock Type 4 Fail SecureWiring Unused Zones Wiring with Release Hold Timer Fail Safe and Fail SecureFail SAFE/FAIL Secure Timer Connections Remote Indicator WiringAC Lock Control Option WiringSilence Latch Wiring Option SL Emergency Release Wiring Option PB Field Installation of Emergency Release ButtonGeneral LCP/XDT Connections Without USE of Bypass Rev. A.1, 10/99 LED WHT MK KEY RED Switch General LCP/XDT Connections with USE of Bypass Switch Bypass Wiring Option KP1 or MK1 Fail Safe Locks Field Installation of Bypass Keyswitch Fail Safe Locks Switch Bypass Wiring Options KP2 or MK2 Fail Secure LocksField Installation of Bypass Keyswitch Fail Secure Locks USE of Multiple PanelsConnections Between Standard Board and Slave Board Multiple Panel Fail Secure Wiring Panels Alternately EnabledAlternately Enabled Panel Wiring Door Monitoring no Electric Locks Door Monitoring no Electric LocksMAGNACARE→ Limited Lifetime Warranty

ELECTRIC LOCK specifications

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