Three-quarter view of a compact FFU speed controller with rotary dial and six-way terminal block

Cleanroom équipement pièces de rechange

Contrôleur de vitesse FFU par

A compact panel-mounted controller that gives operators direct, stepless airflow adjustment for compatible EC-motor fan filter units.

Stepless Manual Adjustment
EC Fan Signal Control
Compact Panel Mounting
Serviceable Screw Terminals

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Introduction de produit

The FFU speed controller provides a local setpoint for a compatible electronically commutated fan motor. Turning the front potentiometer varies the low-voltage command used by the motor electronics, allowing commissioning or maintenance personnel to trim airflow without replacing the FFU drive. The molded enclosure protects the control components, while mounting ears and a removable screw terminal block simplify installation near the fan housing or inside a control compartment. Signal range, terminal assignment and minimum-speed behavior must be matched to the existing motor or FFU control card.

Key Features

Rotary potentiometer gives smooth local adjustment across the usable FFU airflow range.

Low-voltage signal architecture is suited to EC fans that accept an analog speed command.

Front status indication provides a quick visual check that the control circuit is energized.

Screw terminals and external mounting tabs support straightforward replacement and servicing.

Préoccupations du client produit

A replacement speed controller must produce the signal expected by the installed motor and fit the existing wiring and mounting arrangement.

The new controller uses a signal range that the existing EC motor cannot interpret correctly.The controller is selected to match the motor's specified analog command range and reference supply.

Airflow falls below the stable operating point at the lowest dial position.Minimum-speed behavior can be matched or preset to preserve the required lower airflow limit.

Different terminal assignments create wiring errors during field replacement.Terminal count, signal common, reference voltage and command output are verified against the original connection diagram.

The control cannot be secured near the FFU without modifying the housing.Mounting-tab geometry and enclosure orientation can be configured for the available service space.

Les applications typiques

Single FFU airflow commissioningCleanroom ceiling fan filter unitsLaminar-flow workstation fansLocal EC fan maintenance control

Paramètres techniques

Typical construction ranges for compact manual FFU speed controllers are shown below.

Matériaux de base	Flame-retardant PC/ABS enclosure with FR-4 control board and copper-alloy terminals
Panneau épaisseur	35-70 mm nominal enclosure depth
Largeur effective	70-135 mm nominal mounting width
Longueur maximale	Up to 160 mm overall length including mounting tabs
Acier face épaisseur	0.8-1.5 mm equivalent terminal-clamp and internal bracket thickness
Densité Core	1050-1250 kg/m³ for molded PC/ABS enclosure material
Conductivité thermique	0.18-0.25 W/(m·K) for molded enclosure material
surface finie	Fine-textured matte-black housing with white dial marks, green indicator and green terminal block
Type joint	Six-position screw terminal connection with bolted external mounting tabs
Customisation	Disponible en fonction de l'application prévue et de l'environnement d'exploitation.

Options disponibles

0-10 V or matched potentiometer interfaceMinimum-speed presetAlternative terminal assignmentCustom mounting-tab geometry

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