FR-D740-022-E8 Inverter 0.75kW 3 Phase 380-480V VFD Variable Frequency Drive Compact AC Motor Speed Controller

Product Overview

The FR-D740-022-E8 is a compact general-purpose inverter from the FREQROL D700 series, a three-phase 400 V class drive designed to be built into control panels. All routine interaction happens on the front face: the adjustment dial, the keypad, the indicator window and the terminal cover are reachable without dismantling the panel.

The unit in this listing carries the manufacturer's printed nameplate on its side and the manufacturer's printed panel and label on its original carton. The rating plate reads: FR-D740-022-E8, 3-phase 380-480 V 50/60 Hz input at 3.6 A, rated output current 2.2 A, output frequency range 0.2-400 Hz. The carton label repeats the model code together with the abbreviated code FRD740E8022, the serial number and the input rating, and carries an EAC mark and standard handling symbols.

Typical duty for this rating class is variable-speed control of fans, pumps, conveyors and small machines where the drive has to fit into a shallow, densely packed enclosure.

Key Features

Compact housing. The series description presents this range as the most compact type in the manufacturer's inverter line-up, which keeps panel space for other components.

Side-by-side installation. The series description states that units can be installed side by side, so several drives can share one enclosure row without extra clearance between them.

Finned aluminium heatsink. A die-cast aluminium heatsink with deep fins sits on the rear of the housing, and the plastic housing carries ventilation slots above and below it so air moves across the fins.

Front-face operation. The rotary dial, the keypad and the display all sit on the front, so frequency and parameter changes are made at the panel door rather than at a remote terminal.

Metal mounting bracket. An aluminium bracket with through fixing holes runs along the rear of the unit for vertical panel mounting.

Described as easy to maintain. The series description highlights straightforward maintenance along with simple operation as design priorities for this range.

Technical Specifications

Values in this table are taken from the rating plate of the unit shown in the photographs, from the manufacturer's printed carton label, and from the published series and rating-class description. Confirm them against the official instruction manual before designing a system around the drive.

Structure and Cooling Design

The unit is built as a two-part assembly: a dark grey plastic housing that carries the control panel on the front, and a die-cast aluminium heatsink with deep parallel fins on the rear. Ventilation slots moulded into the housing above and below the heatsink let air pass across the fins, so heat leaves the enclosure instead of building up around the electronics.

An aluminium bracket with through fixing holes runs along the rear of the unit and provides the mechanical fixing points for panel mounting. The front face carries a removable terminal cover below the display, and the printed rating plate is fixed to the side of the housing.

No internal assembly is shown in this listing: only the external structure, the heatsink, the bracket and the housing are depicted.

Control Panel and Operation

The front panel groups every routine control in one place:

• Rotary dial for setting the frequency and stepping through parameter values.

• RUN key to start the drive.

• STOP/RESET key to stop the drive or clear a trip.

• MODE key to move between setting, parameter and monitor modes.

• SET key to confirm a value.

• PU/EXT key to switch between panel (PU) and external operation.

• Display window with RUN, MON and PRM indicators plus PU, EXT and NET indicators.

The printed label on the front panel carries the safety instructions supplied with the unit, including:

• Read the manual and follow the safety instructions before use.

• Isolate the drive from the supply and wait ten minutes before removing the cover.

• Ensure a proper earth connection.

• Mount the inverter on a non-combustible surface.

• Risk of fire if the drive is mounted on a combustible object.

Installation and Mounting Notes

1. Mount the drive vertically on a non-combustible panel surface using the fixing holes in the rear bracket.

1. Keep the heatsink and the ventilation slots clear so air can pass across the fins; the housing is designed to allow side-by-side mounting when panel width is tight.

1. Wire the drive with the supply isolated. Follow the terminal arrangement given in the manufacturer's manual, and confirm that the supply is 3-phase 380-480 V at 50/60 Hz.

1. Provide a proper earth connection before energising the drive.

1. After switching off, wait at least ten minutes before removing the cover, as instructed on the unit's printed label.

1. Keep all electrical parts dry, and do not operate the drive with the cover removed.

Typical Applications

• Fans and pumps

• Conveyors and food processing machines

• Machine tools

• Packaging machines, textile machines and printing machines

• Environmental and daily-life related machines

• Amusement machines

Applied as speed control in these duties, the drive regulates motor speed from the panel dial or from external signals instead of running the motor at a fixed speed.

Packing and Unit Identification

The unit is supplied in the original manufacturer carton. The carton carries a printed brand panel reading "COMPACT SIZE INVERTER", the model panel, handling symbols and the product label.

The product label on the carton carries:

• Model code: FR-D740-022-E8

• Abbreviated code: FRD740E8022

• Serial number

• Input rating: 3-phase AC 380-480 V, 50/60 Hz

• Barcode and an EAC mark

The rating plate on the unit itself carries the same model code, the input and output ratings, the CE marking and the cULus listing mark, and a manufacturing date. The unit photographed for this listing shows a manufacturing date of 2023-01; dates on other units in stock may differ.

FAQ

What voltage does this model use? 3-phase 380-480 V, 50/60 Hz, with a rated input current of 3.6 A, as printed on the rating plate.

What motor size does the FR-D740-022 rating suit? The 0.75 kW rating class, with a rated output current of 2.2 A.

What output frequency range does it cover? 0.2-400 Hz.

How do I change the speed? Turn the rotary dial on the front panel, or use the keypad to enter the frequency and confirm with the SET key. The PU/EXT key switches control between the panel and an external signal source.

Can several drives be mounted next to each other? Yes. The series description states that side-by-side installation is supported to save panel space; keep the heatsink and ventilation slots clear for airflow.

Which marks appear on the unit? The rating plate shown in this listing carries a CE marking and a cULus listing mark; the carton carries an EAC mark. Tell us which documents you require and we will confirm what is available for the exact unit before you order.

Is the terminal cover removable? Yes. The cover sits on the front face below the display and is removed for wiring. Isolate the supply and wait at least ten minutes before opening it, as printed on the unit.

Notes on Data and Verification

• Ratings, model codes, marks and printed safety text quoted in this page are taken from the rating plate and carton label of the unit shown in the listing photographs, and from the published series and rating-class description.

• The 0.75 kW motor capacity class is quoted from published specifications for the FR-D740-022 rating; the value printed on the rating plate is the input and output current.

• Photographs in this listing show external structure only. No internal assembly, wiring layout or parameter default is depicted or claimed here.

• Confirm all electrical data against the official instruction manual before installation, and confirm stock date codes, packing and available documents with the supplier before ordering.