STJH pass-box interlock kit with separate stainless display and three-door hardware on white.

STJH-THREE-DOOR-CLEANROOM-INTERLOCK-SYSTEM-PASSBOX-32BIT

Three-Door Cleanroom Interlock System 32-Bit Pass-Box

Combine three-door pass-box sequencing with equipment outputs and an alphanumeric display.

Display and controller can occupy different mounting positions.
Equipment interlocking coordinates door access with connected UV and blower functions.
A UV-hour counter supports lamp-use tracking.

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Product Introduction

This system separates a wall-mounted control unit from a flush stainless display module. A 32-bit microcontroller coordinates three transfer doors and provides outputs for pass-box lighting, ultraviolet equipment and a blower. The display uses a two-line character screen with status LEDs. Static and dynamic configurations are available, with pressure monitoring reserved for the dynamic version. The system hardware is supplied for integration with a transfer chamber rather than as the chamber itself.

Key Features

Display and controller can occupy different mounting positions.
Equipment interlocking coordinates door access with connected UV and blower functions.
A UV-hour counter supports lamp-use tracking.

Technical Parameters

Door Capacity	3 doors
Processor	32-bit microcontroller
Display	16 x 2 alphanumeric with LEDs
Mains Input	110–230 VAC, 50 Hz, single phase
Lock Output	12 VDC, 500 mA per lock
Equipment Contacts	Potential-free changeover, 5 A at 230 VAC
Display Face	304 stainless steel
Display Mounting	Flush mounted
Communication Option	Modbus RTU
Customization	Static or dynamic equipment connections can suit the intended pass-box application.

Applications

Three-door material-transfer chambers.
Dynamic pass boxes requiring pressure-related signalling.

Solutions for Your Application

Separate controls make the transfer cycle difficult to follow.

The display presents door and connected-equipment states together.

Lamp operating time is otherwise unrecorded.

The integrated hour counter supports tracking of UV lamp use.

Available Options

Dynamic version with pressure input.
Modbus RTU connection.
External differential-pressure display.

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