Rev. A.2, 10/03

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To return the red/green LED logic to factory set default, put the unit into program mode and enter 7-4.

6. USE OF THE PROGRAMMABLE RELAY

The DK-26 CPU board includes a second relay whose 5 Amp, SPDT contacts are marked CX, NCX and NOX (see Figure 2). This relay is employed for different functions which are selected by commands sent to the CPU board while the unit is in program mode. In general, you need to choose the function you want to make active for this relay (if any) and the following sections lay out the choices.

6.1 DOORBELL FUNCTION

As delivered, the programmable relay will operate when the Bell key is pressed when the unit is in “normal” operating mode (ready to accept a code). The Bell key is used a great deal in programming operations but the relay will not operate during programming (including initiating and exiting programming mode).

The purpose for this is to operate a real doorbell so that unauthorized

 

 

persons outside the controlled door can request entry. Most

CX

NOX

commercial doorbells are furnished with their own power supply, so

 

 

typical wiring is as shown in the drawing to the right.

 

 

Note that if you don’t plan to use this function, a blank rectangular label is supplied which can be used to cover the “BELL” legend on the keypad face. This avoids misleading a person on the outside of the door.

6.2 DURESS FUNCTION

DOORBELL POWER SUPPLY

The duress function is used for high security applications. It allows a person being threatened to release the door but simultaneously create a silent alarm which would be employed to summon assistance. To make this work, obviously the threatened authorized person has to enter something different than a standard User code.

The DK-26 handles this requirement by establishing the Hard code as a duress code. You need to do several things however to implement this.

Ordinary operation must be via one or more User codes (see Section 4.2 for programming)

Program the Hard code as your duress code (see Section 4.1).

Put the unit in program mode , and enter 7-5. You will see the two flash confirmation. Exit program mode by pressing the Bell key or waiting 30 seconds.

Now, when you enter a user code, the door will open but when you enter the Hard code, the door will open and the programmable relay will switch. The door will remain open for the amount of time programmed but the programmable relay will stay switched (it latches) until the hard code is entered a second time to reset it. Use the programmable relay contacts (CX, NOX and NCX) to report the releasing of the door under duress. This can be done by interfacing with an alarm panel or dialer. Note that a duress code is rarely used. To make the code easier to remember, you can select a Hard code that is close to the User code (if only one User code is being employed) or you can select a short hard code. Note finally that selection of this option means you give up the opportunity to implement a doorbell or other use of the programmable relay.

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Assa DK-26 manual USE of the Programmable Relay, Doorbell Function, Duress Function
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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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