Rev. A.1, 10/99

Page- 27

6.2 MULTIPLE PANEL FAIL SECURE WIRING

If fail secure locks are employed and more than one panel is needed to control them, the panel terminals are simply wired in parallel (S to S; L to L; and E to E). Either panel can release the lock but the same panel that released it must be used to resecure it. Both panels monitor the lock in identical fashion. A single power supply must operate the system and you must interconnect an “R” terminal from one board in each panel so that all “R’s” are in common. As always, the red flying leads from the reset toggles must be interconnected with each other and with a source of +V. Note that this set-up is well suited for momentary toggles. Since the switch is spring loaded, it is automatic that the switch that released the lock resecures it.

Another option is to mount relays (available in groups of four with Securitron’s RB-4 board) which are controlled by the panel toggles. The relays in turn control the locks. This allows altering fail safe operation (magnetic locks for example) to fail secure as when the relay is energized, it is wired to deenergize the lock through the use of its NC contacts. This technique can sometimes be useful for a spread out installation where the LCP’s are separated by a large distance as full lock power does not need to run between each panel.

6.3 PANELS ALTERNATELY ENABLED

In some installations, panels are used alternately. A good example of this is when one panel is manned during working hours and the second is manned at night and during weekends. For this type of application, it is important that only one panel is enabled at a time as unauthorized people might be able to gain access to the disabled panel during that portion of the day.

To accomplish this, each panel must be furnished with a DPDT alternate action keyswitch with contacts of sufficient capacity to handle the full current load of the installation. In the case of large panels, the keyswitches can operate DPDT relays and then, of course, the keyswitches only need to be single pole. The factory can supply the keyswitches (Securitron model MKA2 for example) or they may be added in the field. The keyswitch contacts are wired together in 3- way fashion (see Figure 16) and, therefore, turning either keyswitch on either panel, at any time will “flip” the enabled panel. It’s easy to see which panel is enabled as it will show indicators. The disabled panel will be dark. A single power is required for this to work but individual breakered outputs are not supported. All positive power input terminals in each LCP must be jumpered together with the power supply employed as a two terminal device (+ and -).

Note on Figure 16 that the keyswitch contact wires must be heavy enough to carry the full load of the installation. You must also make sure that each panel is connected to power supply DC negative either by running power supply negative wires to all the board “-” terminals in each panel or by running the power supply negative wires to one panel and then interconnecting the “-” terminals between panels. Make sure this is also done with heavy gauge wires.

At the doors you follow the same connections from either panel’s S, L and E terminals to the lock and remote switch (if any). The bottom of Figure 16 gives the example of a type 3 fail safe lock connection scheme. You must just be sure to interconnect the S, L and E terminals for the respective zone between the panels as Figure 16 shows. This way, as each panel is enabled, its output terminals are properly connected to the lock.

Page 28 Page 30
Page 29
Image 29
Assa ELECTRIC LOCK manual Multiple Panel Fail Secure Wiring, Panels Alternately Enabled
Page 28 Page 30

ELECTRIC LOCK specifications

Assa Electric Lock is a cutting-edge security solution designed to address the evolving needs of modern access control systems. Utilizing advanced technologies, this lock integrates both traditional locking mechanisms with state-of-the-art electronic features, providing an unparalleled level of security for residential and commercial properties.

One of the standout features of the Assa Electric Lock is its ability to incorporate various access modes. Users can choose between key-based entry, key fob access, and mobile app control. This versatility ensures that users can select the most convenient method for their specific needs while still maintaining robust security. The inclusion of a mobile application elevates user control, allowing for remote access management and real-time monitoring of lock status.

The lock is engineered with robust materials, ensuring durability and resistance to tampering. It features a high-quality housing that can withstand environmental elements, making it suitable for both indoor and outdoor installations. The Assa Electric Lock is also designed to function seamlessly with existing security systems, providing compatibility without compromising overall security.

Assa Electric Lock employs advanced encryption technologies to safeguard user data and access control commands. With encryption protocols in place, users can be confident that their security information is protected from unauthorized access. The lock also includes an audit trail feature, which logs entry and exit events, allowing property owners to track access history easily.

In addition to its electronic capabilities, Assa Electric Lock prioritizes user-friendly design. The intuitive interface and installation process make it accessible to both professional installers and DIY enthusiasts. Furthermore, the lock is equipped with a backup key option, ensuring that users can always access their property in the event of a power failure or technical issues.

The lock's energy efficiency is another key characteristic, as it operates on low power consumption without sacrificing performance. This commitment to sustainability not only reduces costs but also minimizes the environmental impact.

Overall, the Assa Electric Lock stands out in the evolving landscape of security technology. It combines traditional reliability with modern electronic features, making it an ideal choice for those seeking enhanced security solutions. With its range of access options, robust materials, advanced encryption, and user-friendly design, the Assa Electric Lock is leading the way in secure access control.
Top Page Image Contents