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The Interlock Function in iProtect is an essential security feature designed to enhance access control in secure areas. This function ensures that only one door within a specified reader group can be open at any given time, thereby preventing unauthorized access. By restricting the opening of multiple doors in a group, the interlock function provides an additional layer of security, making it particularly valuable for locations with stringent access requirements, such as data centers, laboratories, and high-security facilities.
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When the interlock function is activated, if one door in the reader group is open, all other doors in that group will automatically lock, and the LEDs of the other readers will blink red and green. This configuration not only safeguards against unauthorized entry but also clearly indicates when one of the doors in the group is already open.
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Before turning on the interlock function, make sure the following requirements are met:
Administrative Rightsrights: Only users with proper access rights can adjust reader groups.
Supported Readersreaders: All readers in the interlock group must be connected to the same controller (and be on the same line).
Door Contactscontacts: Each door in the reader group must have a magnetic door contact. This contact provides feedback to the system on whether a door is open or closed, which is needed for the interlock function to work.
Deadbolt contact (optional): When using a reader configuration with both a door contact and a deadbolt contact, both contacts should be idle (door closed and locked) for the interlock function to be inactive. If either contact becomes active, the interlock function is triggered. As a result, other doors in the group will blink and reject access until all contacts return to idle.
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Since iProtect version 10.04, the interlock function can be set up across multiple lines. See Chapter 7. Configuring the Interlock Function Across Multiple Lines for details. |
3. Steps to Create a Reader Group with the Interlock Function
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Go to the Reader Group menu under access | settings | reader group.
In the tree view, right-click and select Add Reader Groupgroup. Give the group a logical name, like “Interlock Group 1.”
Turn on the Interlock Function by checking Interlocking Reader Groupgroup checkbox. This ensures that only one door in this group can be open at a time.
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Create a reader group, activate the Interlock Function, and include all interlock readers from Line 1 including the virtual reader. (see chapter 3. Steps to Create a Reader Group with interlock Function)
Create an second reader group on the same way for Line 2.
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The following events that can be shown in the last event overview depend on the situation.
Event ID | Event name | Error message | Description | Is generated by |
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3 | Subscriber card: no access | No access, other interlock door is open | Access denied because another interlock door is open. | Occurs when an access request is made at a reader with blinking red/green light, indicating an open door. |
9. Frequently Asked Questions (FAQ)
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A: This means a door in the interlock group is open or not locked, so the system is blocking access to other doors in the same group.