Complete FFU group control cabinet with blue touchscreen and fan network modules in three-quarter view

Cleanroom Control and Environmental Monitoring Systems

FFU Group Control System

A networked controller that supervises large banks of fan filter units, distributes speed setpoints and identifies individual FFU faults from one operator panel.

Individual FFU Addressing
Grouped Speed Commands
Live Motor Feedback
Fault Location by Unit

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Product Introduction

The FFU group control system connects individually addressed EC fan filter units through dedicated communication branches and industrial gateways. Operators can start, stop or change speed by room, zone or selected unit while receiving actual speed, current and fault status from each fan. Scheduled occupied and setback modes reduce unnecessary fan energy outside production periods. Branch segmentation keeps troubleshooting practical in large ceilings because a communication issue can be isolated without losing visibility of every cleanroom zone.

Key Features

Addressable communication maps each fan filter unit to its physical ceiling location.

Zone commands change multiple EC fan speed setpoints without editing every unit separately.

Returned speed, current and alarm states reveal stalled or disconnected FFUs quickly.

Segmented gateways support orderly expansion across multiple cleanroom ceiling grids.

Customer Product Concerns

A large FFU ceiling needs centralized control without making a single branch fault difficult to diagnose or service.

Technicians cannot identify which fan in a dense ceiling grid has failed.Addressed status feedback links each alarm to a room coordinate and FFU number.

Manual speed adjustment creates inconsistent airflow across adjacent zones.Group setpoints apply a coordinated command to every selected FFU branch.

Full-speed operation during idle hours wastes fan energy.Scheduled occupied and setback commands reduce speed when process demand is lower.

One communication fault can obscure a large number of ceiling units.Multiple isolated branches and gateways limit the affected section and preserve the remaining network.

Typical Applications

Semiconductor cleanroom ceilingsPharmaceutical filling suitesElectronics assembly cleanroomsModular cleanroom installations

Technical Parameters

Typical construction for an FFU group control cabinet serving networked EC fan filter units is listed below.

Core Material	Powder-coated steel cabinet with FR-4 control boards, isolated RS-485 interfaces and copper terminals
Panel Thickness	180-350 mm cabinet depth
Effective Width	500-1000 mm enclosure width
Maximum Length	Up to 1800 mm enclosure height
Steel Facing Thickness	1.2-1.8 mm powder-coated steel panels
Core Density	7800-8050 kg/m³ for steel enclosure components
Thermal Conductivity	45-60 W/(m·K) for steel structural parts
Surface Finish	Light-gray textured powder coat with blue HMI bezel and labeled branch indicators
Joint Type	DIN-rail modular cabinet with segregated power and multi-branch Modbus terminal sections
Customization	Available based on the intended application and operating environment.

Available Options

Modbus RTU or TCP gatewaysTouchscreen ceiling mapOccupied and setback schedulesRedundant communication branches

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