Access Granted With Electronic Keys

The Guardian II system is a non-networked electronic access control system that utilizes controllers operated by electronic keys. It includes an Admin Key to program the controllers, an Export Key to retrieve the audit trail data and User Keys that identify users to the system’s controllers. Admin and Export Keys eliminate the need for a laptop computer or PDA for data transfer.

Guardian II software is managed by an administrator who assigns access rights and monitors activities of the users. Setting up a system can be completed by following the systematic instructions in the User Guide.

Each Guardian II controller is connected to an electromechanical lock mechanism to control access for each door. If the User Key is authorized, the controller activates a timed relay contact that powers the lock mechanism.

Controllers are installed between the device power supply and the lock mechanism. Each controller operates on 9 to 12 VAC/VDC with a current draw of .3 Amps. The controller has one Form C, SPDT 2 Amp @ 30VDC relay that controls the Fail Safe or Fail Secure lock mechanism. Each relay can control an electric strike, magnetic lock or electrified lock mechanism that does not exceed the relay’s current draw.

Note: The Guardian II controller circuit board can be configured for remote release input.

Four controller models comprise the Guardian II family. Each controller provides the same functionality, but is designed for a specific mounting method. These are:

• Open construction (G50)
• Heavy duty aluminum enclosure (G450)
• Narrow jamb stiles (G150)
• Single gang box (G250)

The open construction controller can be installed into an existing panel. The heavy duty aluminum enclosure controller is mounted behind a plate that can be used in gate/fence applications or onto a pedestal or wall. Each controller must be mounted within 25 feet of the lock mechanism. The controller keyway receptacles are weather resistant. Each controller comes with a tri-color LED and a Piezo buzzer that indicates the status of the controller.

Once the hardware has been installed and wired, each controller is initialized individually for date and time, naming the controller and its site name. The software will assign an identification number for each controller. Once the controllers have been initially programmed, multiple controllers can be programmed to control access using the Admin Key.

Controllers are configured as either an admission or a restriction type. Admission controllers only grant access to users or groups that are programmed in its memory. Restriction controllers will deny access to users or groups that are programmed in its memory.

The two controller types allow the administrator of the system to minimize set-up time by selecting the controller type that will have the shortest list. For example, an employee entrance could be set up as a restriction controller, where all key holders get access, except those added to the restriction list. Conversely, an admission controller might be used for an executive office, where only a few people would be given access.

Guardian II software contains records for each user of the system. Users can be seen as individuals or as part of a group. For a large number of similar users, it is easier to list one group on a controller list, rather than listing many users. Access is granted or denied based upon the settings programmed to the controller and/or the User Key. When access is granted, the relay energizes and permits the lock mechanism to activate.

Access can be controlled by date, time, schedules, access point, auto-unlock and dual key access. A limited number User Key can be used for temporary access. Access can be overridden by the holiday schedule and by disabling User Keys. An interesting feature is Instant Access, which validates a new User Key instantly, without having to first program the controller.