Rev. A.2, 10/03

Page-20

7.3 ALARM SYSTEM SHUNTING

The DK-26's lock control relay is of the double pole, double throw type. Note that in all the other drawings in this manual, we show only one of the poles being used (C1, NC1 and NO1). The most common use for the second pole (C2, NC2 and NO2) is to shunt out an alarm system, which would be connected to the door when the DK-26 is being utilized. The idea is that if the door opens without the DK-26 having been activated, an alarm signal should result. When the DK-26 is employed to open the door, the alarm signal should be shunted.

The alarm system will be connected to a door switch or other detector at the door via two wires. You will need to determine if this “loop” is closed when the door is closed and opens when the door opens (the most common) or is open when the door is closed and closes when the door opens. In the former case (closed when the door is closed), splice wires respectively from C2 and NO2 into the wires from the detector or switch. When the DK-26 operates, this connection will close preventing the alarm loop from opening (alarm condition). In the latter case (open when the door is closed), cut one of the alarm loop wires and splice wires respectively from C2 and NC2 into the ends of this wire. When the DK-26 operates, this connection will open preventing the alarm loop from closing (alarm condition).

FIG 8 WIRING TO SHUNT ALARM SYSTEM ON DOOR

TO ALARM PANEL

 

TO ALARM PANEL

NC2 C2 NO2

 

NC2 C2 NO2

 

CUT EITHER

 

 

WIRE FROM

 

DOOR

SWITCH

DOOR

 

SWITCH

 

SWITCH

ALARM SIGNAL WHICH IS CLOSED WHEN DOOR IS CLOSED; OPENS TO ALARM

ALARM SIGNAL WHICH IS OPEN WHEN DOOR IS CLOSED; CLOSES TO ALARM

7.4 ANTI-TAILGATING

Particularly when using the longer time ranges, the end user may be concerned that after an authorized person has used the door, a second unauthorized person can also use it before the lock has reset. By the addition of a door switch which opens when the door opens, the DK- 26 can be made to re-engage the lock as soon as the door has re-closed regardless of the status of the timer. To implement this feature, a special command has to be sent to the CPU board which will alter the function of either the HCD or UCD input terminal. When you enable this anti-tailgating feature, you must give up the capability of disabling either the Hard code or all the User codes.

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Assa DK-26 manual Alarm System Shunting, Wiring to Shunt Alarm System on Door, Anti-Tailgating
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DK-26 specifications

The Assa DK-26 is a state-of-the-art electronic locking system designed to provide enhanced security for a variety of applications, including commercial, institutional, and residential environments. This locking solution is characterized by its robust construction, advanced technology, and user-friendly features, making it a popular choice among security professionals.

One of the standout features of the Assa DK-26 is its innovative design, which combines mechanical and electronic security elements. The locking mechanism utilizes a high-security cylinder, ensuring that unauthorized access is thwarted. This cylinder is key-operated, allowing for traditional key entry while also supporting electronic access control, offering flexibility to users.

The DK-26 is equipped with advanced electronic technologies that enhance its functionality. One of the key technologies integrated into this system is RFID (Radio Frequency Identification). This allows users to gain access using key fobs or cards that contain embedded RFID chips. The system can be programmed to allow or deny access based on time schedules, occupancy status, or individual user credentials, providing a high level of control over who can enter a facility.

Another notable characteristic of the Assa DK-26 is its ability to integrate with various security management systems. This compatibility allows for centralized control and monitoring of multiple locking devices, enabling security personnel to efficiently manage access across an entire building or campus. Additionally, the DK-26 features real-time audit trails, which log all access attempts and can be reviewed for security audits or investigations.

The DK-26 is designed for durability and resilience, featuring weather-resistant materials that make it suitable for both interior and exterior applications. Its sleek and modern aesthetic adds to the appeal for businesses looking to maintain a professional appearance while ensuring optimal security.

Installation of the Assa DK-26 is straightforward, as it can be retrofitted to existing door hardware without requiring extensive modifications. This ease of installation, combined with its reliable performance, makes the DK-26 an intelligent choice for anyone looking to upgrade their locking systems.

In summary, the Assa DK-26 electronic locking system combines high-security mechanical features with advanced electronic technologies, making it a versatile and effective solution for securing a diverse range of environments. Its RFID access capabilities, integration with security management systems, and robust construction make it a standout choice in modern security solutions.
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