The eSSL 3-door interlocking control unit (reference KTI01003001DR03) is engineered for autonomous access sequencing across multi-portal cleanroom and containment environments. Operating via a dedicated microcontroller-based architecture without onboard event memory, the controller performs immediate logic execution to inhibit adjacent doors whenever any single portal in the 3-door array is unsealed.
Door Terminal Allocations and Input Compatibility
Field switching devices and access authenticators interface with the controller through dedicated terminal blocks designated specifically for each managed perimeter door. Installers must map station wiring precisely to the designated terminal channels:
- SW1 Terminal: Interfaces with access push switches or reader devices assigned specifically to Door 3.
- SW2 Terminal: Interfaces with access push switches or reader devices assigned specifically to Door 2.
- SW3 Terminal: Interfaces with access push switches or reader devices assigned specifically to Door 1.
These input ports support industry-standard momentary push buttons, request-to-exit switches, and third-party access card readers. The controller continuously samples terminal inputs to manage lock states in real time, preventing concurrent door releases across any two connected stations.
Interlocking Terminal and Hardware Compatibility Matrix
| Terminal Channel | Designated Portal | Compatible Field Peripherals | Interlocking Control Logic |
|---|---|---|---|
| SW1 | Door 3 | Access Readers, Request Push Switches | Grants Door 3 access while maintaining lock inhibition on Door 1 and Door 2. |
| SW2 | Door 2 | Access Readers, Request Push Switches | Grants Door 2 access while maintaining lock inhibition on Door 1 and Door 3. |
| SW3 | Door 1 | Access Readers, Request Push Switches | Grants Door 1 access while maintaining lock inhibition on Door 2 and Door 3. |
| EMG | Universal (Doors 1, 2, 3) | Emergency Release Push Switches, Break-Glass Stations | Overrides microcontroller interlocking logic to release all doors during emergency evacuation. |
| Buzzer Output | System-Wide | Integrated Controller Buzzer Signaling | Generates immediate audible status alert indicators during interlocking sequence events. |
Locking System and Emergency Hardware Integration
The interlocking controller is compatible with standard electromagnetic locking hardware, including robust magnets installed across sliding or swing door frames. When an authorized input signal is detected at SW1, SW2, or SW3, the microcontroller energizes or de-energizes the respective electromagnetic lock while keeping the remaining two portals securely locked.
For life-safety integration, the dedicated EMG terminal connects directly to emergency push switches or break-glass call points. Actuation of an emergency device wired to the EMG terminal immediately bypasses the controller's door-locking sequence, disengaging all connected magnetic locks to facilitate unimpeded egress across all three managed portals.
Facility and Environmental Application Compatibility
Because the unit operates autonomously without the requirement for an event memory buffer, network database links, or host PC software overhead, it provides instantaneous sequencing ideal for specialized isolation perimeters. Compatible installation environments include:
- Pharmaceutical and Cleanroom Airlocks: Maintains differential air pressure and stops cross-contamination in cascading gowning rooms.
- Critical Industrial Facilities: Suitable for factories, manufacturing clean zones, and defense installations requiring physical airlock boundaries.
- Secure Infrastructure: Operates reliably within laboratories, medical clinics, hospitals, banks, and server room access vestibules.
