Cleanroom Doors, Windows and Interlock Systems

Networked Multi-Door Cleanroom Interlock System

A scalable interlock architecture that connects multiple local door modules to coordinate airlocks, controlled corridors and transfer zones from one configurable supervisory system.

Distributed Door Modules
Scalable Interlock Zones
Central Status Supervision
Facility-System Interfaces

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Product Introduction

The networked multi-door system separates local door control from facility-level supervision. Door modules near each airlock collect position, request and lock signals, while a central controller coordinates interlock groups and communicates status to authorized operators. This architecture reduces long individual cable runs and allows zones to be expanded or reconfigured without replacing every field device. It is intended for facilities with several interconnected airlocks rather than a single two- or three-door vestibule.

Key Features

Distributed modules keep time-critical lock and sensor wiring local to each door group.

Configurable zones define which doors are mutually exclusive without hardwiring every relationship.

Central supervision displays door state, held-open alarms and controller communication faults.

Dry-contact or standard network interfaces exchange selected status with access control, fire alarm, BMS or SCADA systems.

Customer Product Concerns

Large interlock schemes must remain understandable and serviceable as door counts increase, while a network fault must not produce uncontrolled door behavior.

Home-running every sensor and lock to one cabinet creates excessive cable length and difficult fault tracing.Distributed local modules collect each zone's field wiring and send coordinated status over a defined network link.

Adding a new cleanroom changes interlock relationships across several existing doors.Configurable door groups can be revised without rebuilding the complete relay architecture.

Operators cannot identify which distant door is holding an entire route locked.Central status supervision identifies the active, open or faulted channel by door name and zone.

A communication failure could leave the release state ambiguous.Local modules use a defined fail-state and retain essential door logic when supervisory communication is unavailable.

Typical Applications

Large pharmaceutical cleanroom suitesMulti-room laboratory facilitiesHospital sterile departmentsSemiconductor controlled-access networks

Technical Parameters

Representative physical and interface ranges for a distributed multi-door interlock platform are listed below.

Core Material	Central supervisory controller, distributed door I/O modules, regulated supplies, relays and network interfaces
Panel Thickness	100–200 mm central cabinet depth; 60–120 mm local module depth
Effective Width	300–600 mm central cabinet width
Maximum Length	800 mm central cabinet height
Steel Facing Thickness	1.2–1.5 mm powder-coated steel cabinet; stainless local stations typically 1.2–2.0 mm
Core Density	Approximately 1800–1920 kg/m³ for the controller and distributed-I/O PCB laminates
Thermal Conductivity	Approximately 0.4–0.7 W/(m·K) for the PCB laminates used in the networked modules
Surface Finish	Powder-coated central cabinet, sealed local modules and brushed stainless operator plates
Joint Type	Networked distributed I/O with local lock/contact terminals, supervised communications and isolated auxiliary interfaces
Customization	Available based on the intended application and operating environment

Available Options

Four-door to facility-wide channel countsEthernet or fieldbus communicationTouchscreen or web-based status displayAccess-control, fire-alarm, BMS and SCADA integration

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